path: root/common/recipes-kernel/linux/linux-yocto-4.14.71/2858-drm-amdkfd-Rename-GFX8-trap-handler.patch

From 175eb77c7a217357a3f3aec7850fcfe8e7b8e44c Mon Sep 17 00:00:00 2001
From: Felix Kuehling <Felix.Kuehling@amd.com>
Date: Wed, 8 Nov 2017 17:31:36 -0500
Subject: [PATCH 2858/4131] drm/amdkfd: Rename GFX8 trap handler

Consistent naming convention with GFX9. Not naming the file .h also
fixes checkpatch errors.

Further reduced checkpatch warnings by trimming trailing whitespace
with a simple sed-script:
    sed -i -e 's/[ \t]\+$//' cwsr_trap_handler_gfx8.asm

Also fixed indentation in the assembly code for better readability
by converting TABs to spaces using TAB-width 4.

Change-Id: Ic0a755f0e91014a22d098f5cf56eb99717617b46
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
 .../gpu/drm/amd/amdkfd/cwsr_trap_handler_carrizo.h | 1384 --------------------
 .../gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx8.asm  | 1384 ++++++++++++++++++++
 drivers/gpu/drm/amd/amdkfd/kfd_device.c            |    8 +-
 3 files changed, 1389 insertions(+), 1387 deletions(-)
 delete mode 100644 drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_carrizo.h
 create mode 100644 drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx8.asm

diff --git a/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_carrizo.h b/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_carrizo.h
deleted file mode 100644
index d5d1331..0000000
--- a/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_carrizo.h
+++ /dev/null
@@ -1,1384 +0,0 @@
-/*
- * Copyright 2015 Advanced Micro Devices, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#if 0
-HW (VI) source code for CWSR trap handler
-#Version 18 + multiple trap handler
-
-// this performance-optimal version was originally from Seven Xu at SRDC
-
-// Revison #18   --...
-/* Rev History
-** #1. Branch from gc dv.   //gfxip/gfx8/main/src/test/suites/block/cs/sr/cs_trap_handler.sp3#1,#50, #51, #52-53(Skip, Already Fixed by PV), #54-56(merged),#57-58(mergerd, skiped-already fixed by PV)
-** #4. SR Memory Layout:
-**             1. VGPR-SGPR-HWREG-{LDS}
-**             2. tba_hi.bits.26 - reconfigured as the first wave in tg bits, for defer Save LDS for a threadgroup.. performance concern..
-** #5. Update: 1. Accurate g8sr_ts_save_d timestamp
-** #6. Update: 1. Fix s_barrier usage; 2. VGPR s/r using swizzle buffer?(NoNeed, already matched the swizzle pattern, more investigation)
-** #7. Update: 1. don't barrier if noLDS
-** #8. Branch: 1. Branch to ver#0, which is very similar to gc dv version
-**             2. Fix SQ issue by s_sleep 2
-** #9. Update: 1. Fix scc restore failed issue, restore wave_status at last
-**             2. optimize s_buffer save by burst 16sgprs...
-** #10. Update 1. Optimize restore sgpr by busrt 16 sgprs.
-** #11. Update 1. Add 2 more timestamp for debug version
-** #12. Update 1. Add VGPR SR using DWx4, some case improve and some case drop performance
-** #13. Integ  1. Always use MUBUF for PV trap shader...
-** #14. Update 1. s_buffer_store soft clause...
-** #15. Update 1. PERF - sclar write with glc:0/mtype0 to allow L2 combine. perf improvement a lot.
-** #16. Update 1. PRRF - UNROLL LDS_DMA got 2500cycle save in IP tree
-** #17. Update 1. FUNC - LDS_DMA has issues while ATC, replace with ds_read/buffer_store for save part[TODO restore part]
-**             2. PERF - Save LDS before save VGPR to cover LDS save long latency...
-** #18. Update 1. FUNC - Implicitly estore STATUS.VCCZ, which is not writable by s_setreg_b32
-**             2. FUNC - Handle non-CWSR traps
-*/
-
-var G8SR_WDMEM_HWREG_OFFSET = 0
-var G8SR_WDMEM_SGPR_OFFSET  = 128  // in bytes
-
-// Keep definition same as the app shader, These 2 time stamps are part of the app shader... Should before any Save and after restore.
-
-var G8SR_DEBUG_TIMESTAMP = 0
-var G8SR_DEBUG_TS_SAVE_D_OFFSET = 40*4  // ts_save_d timestamp offset relative to SGPR_SR_memory_offset
-var s_g8sr_ts_save_s    = s[34:35]   // save start
-var s_g8sr_ts_sq_save_msg  = s[36:37]   // The save shader send SAVEWAVE msg to spi
-var s_g8sr_ts_spi_wrexec   = s[38:39]   // the SPI write the sr address to SQ
-var s_g8sr_ts_save_d    = s[40:41]   // save end
-var s_g8sr_ts_restore_s = s[42:43]   // restore start
-var s_g8sr_ts_restore_d = s[44:45]   // restore end
-
-var G8SR_VGPR_SR_IN_DWX4 = 0
-var G8SR_SAVE_BUF_RSRC_WORD1_STRIDE_DWx4 = 0x00100000    // DWx4 stride is 4*4Bytes
-var G8SR_RESTORE_BUF_RSRC_WORD1_STRIDE_DWx4  = G8SR_SAVE_BUF_RSRC_WORD1_STRIDE_DWx4
-
-
-/*************************************************************************/
-/*					control on how to run the shader					 */
-/*************************************************************************/
-//any hack that needs to be made to run this code in EMU (either becasue various EMU code are not ready or no compute save & restore in EMU run)
-var EMU_RUN_HACK					=	0
-var EMU_RUN_HACK_RESTORE_NORMAL		=	0
-var EMU_RUN_HACK_SAVE_NORMAL_EXIT	=	0
-var	EMU_RUN_HACK_SAVE_SINGLE_WAVE	=	0
-var EMU_RUN_HACK_SAVE_FIRST_TIME	= 	0					//for interrupted restore in which the first save is through EMU_RUN_HACK
-var EMU_RUN_HACK_SAVE_FIRST_TIME_TBA_LO	= 	0					//for interrupted restore in which the first save is through EMU_RUN_HACK
-var EMU_RUN_HACK_SAVE_FIRST_TIME_TBA_HI	= 	0					//for interrupted restore in which the first save is through EMU_RUN_HACK
-var SAVE_LDS						= 	1
-var WG_BASE_ADDR_LO					=   0x9000a000
-var WG_BASE_ADDR_HI					=	0x0
-var WAVE_SPACE						=	0x5000				//memory size that each wave occupies in workgroup state mem
-var CTX_SAVE_CONTROL				=	0x0
-var CTX_RESTORE_CONTROL				=	CTX_SAVE_CONTROL
-var SIM_RUN_HACK					=	0					//any hack that needs to be made to run this code in SIM (either becasue various RTL code are not ready or no compute save & restore in RTL run)
-var	SGPR_SAVE_USE_SQC				=	1					//use SQC D$ to do the write
-var USE_MTBUF_INSTEAD_OF_MUBUF		=	0					//becasue TC EMU curently asserts on 0 of // overload DFMT field to carry 4 more bits of stride for MUBUF opcodes
-var SWIZZLE_EN						=	0					//whether we use swizzled buffer addressing
-
-/**************************************************************************/
-/*                     	variables							              */
-/**************************************************************************/
-var SQ_WAVE_STATUS_INST_ATC_SHIFT  = 23
-var SQ_WAVE_STATUS_INST_ATC_MASK   = 0x00800000
-var SQ_WAVE_STATUS_SPI_PRIO_MASK   = 0x00000006
-
-var SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT	= 12
-var SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE		= 9
-var SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT	= 8
-var SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE	= 6
-var SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SHIFT	= 24
-var SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SIZE	= 3						//FIXME	 sq.blk still has 4 bits at this time while SQ programming guide has 3 bits
-
-var	SQ_WAVE_TRAPSTS_SAVECTX_MASK	=	0x400
-var SQ_WAVE_TRAPSTS_EXCE_MASK       =   0x1FF          			// Exception mask					
-var	SQ_WAVE_TRAPSTS_SAVECTX_SHIFT	=	10					
-var	SQ_WAVE_TRAPSTS_MEM_VIOL_MASK	=	0x100					
-var	SQ_WAVE_TRAPSTS_MEM_VIOL_SHIFT	=	8		
-var	SQ_WAVE_TRAPSTS_PRE_SAVECTX_MASK 	=	0x3FF
-var	SQ_WAVE_TRAPSTS_PRE_SAVECTX_SHIFT 	=	0x0
-var	SQ_WAVE_TRAPSTS_PRE_SAVECTX_SIZE 	=	10
-var	SQ_WAVE_TRAPSTS_POST_SAVECTX_MASK 	=	0xFFFFF800	
-var	SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT 	=	11
-var	SQ_WAVE_TRAPSTS_POST_SAVECTX_SIZE 	=	21	
-
-var SQ_WAVE_IB_STS_RCNT_SHIFT			=	16					//FIXME
-var SQ_WAVE_IB_STS_RCNT_SIZE			=	4					//FIXME
-var SQ_WAVE_IB_STS_FIRST_REPLAY_SHIFT	=	15					//FIXME
-var SQ_WAVE_IB_STS_FIRST_REPLAY_SIZE	=	1					//FIXME
-var SQ_WAVE_IB_STS_RCNT_FIRST_REPLAY_MASK_NEG	= 0x00007FFF	//FIXME
- 
-var	SQ_BUF_RSRC_WORD1_ATC_SHIFT		=	24
-var	SQ_BUF_RSRC_WORD3_MTYPE_SHIFT	=	27
-
-
-/*      Save        */
-var	S_SAVE_BUF_RSRC_WORD1_STRIDE		=	0x00040000  		//stride is 4 bytes 
-var	S_SAVE_BUF_RSRC_WORD3_MISC			= 	0x00807FAC			//SQ_SEL_X/Y/Z/W, BUF_NUM_FORMAT_FLOAT, (0 for MUBUF stride[17:14] when ADD_TID_ENABLE and BUF_DATA_FORMAT_32 for MTBUF), ADD_TID_ENABLE			
-
-var	S_SAVE_SPI_INIT_ATC_MASK			=	0x08000000			//bit[27]: ATC bit
-var	S_SAVE_SPI_INIT_ATC_SHIFT			=	27
-var	S_SAVE_SPI_INIT_MTYPE_MASK			=	0x70000000			//bit[30:28]: Mtype
-var	S_SAVE_SPI_INIT_MTYPE_SHIFT			=	28
-var	S_SAVE_SPI_INIT_FIRST_WAVE_MASK		=	0x04000000			//bit[26]: FirstWaveInTG
-var	S_SAVE_SPI_INIT_FIRST_WAVE_SHIFT	=	26
-
-var S_SAVE_PC_HI_RCNT_SHIFT				=	28					//FIXME	 check with Brian to ensure all fields other than PC[47:0] can be used
-var S_SAVE_PC_HI_RCNT_MASK				=   0xF0000000			//FIXME
-var S_SAVE_PC_HI_FIRST_REPLAY_SHIFT		=	27					//FIXME
-var S_SAVE_PC_HI_FIRST_REPLAY_MASK		=	0x08000000			//FIXME
-
-var	s_save_spi_init_lo				=	exec_lo
-var s_save_spi_init_hi				=	exec_hi
-
-												//tba_lo and tba_hi need to be saved/restored
-var	s_save_pc_lo			=	ttmp0			//{TTMP1, TTMP0} = {3��h0,pc_rewind[3:0], HT[0],trapID[7:0], PC[47:0]}
-var	s_save_pc_hi			=	ttmp1			
-var s_save_exec_lo			=	ttmp2
-var s_save_exec_hi			= 	ttmp3			
-var	s_save_status			=	ttmp4			
-var	s_save_trapsts			=	ttmp5			//not really used until the end of the SAVE routine
-var s_save_xnack_mask_lo	=	ttmp6
-var s_save_xnack_mask_hi	=	ttmp7
-var	s_save_buf_rsrc0		=	ttmp8
-var	s_save_buf_rsrc1		=	ttmp9
-var	s_save_buf_rsrc2		=	ttmp10
-var	s_save_buf_rsrc3		=	ttmp11
-
-var s_save_mem_offset		= 	tma_lo				
-var s_save_alloc_size		=	s_save_trapsts			//conflict
-var s_save_tmp              =   s_save_buf_rsrc2       	//shared with s_save_buf_rsrc2  (conflict: should not use mem access with s_save_tmp at the same time)
-var s_save_m0				=	tma_hi					
-
-/*      Restore     */
-var	S_RESTORE_BUF_RSRC_WORD1_STRIDE			=	S_SAVE_BUF_RSRC_WORD1_STRIDE 
-var	S_RESTORE_BUF_RSRC_WORD3_MISC			= 	S_SAVE_BUF_RSRC_WORD3_MISC		 
-
-var	S_RESTORE_SPI_INIT_ATC_MASK			    =	0x08000000			//bit[27]: ATC bit
-var	S_RESTORE_SPI_INIT_ATC_SHIFT			=	27
-var	S_RESTORE_SPI_INIT_MTYPE_MASK			=	0x70000000			//bit[30:28]: Mtype
-var	S_RESTORE_SPI_INIT_MTYPE_SHIFT			=	28
-var	S_RESTORE_SPI_INIT_FIRST_WAVE_MASK		=	0x04000000			//bit[26]: FirstWaveInTG
-var	S_RESTORE_SPI_INIT_FIRST_WAVE_SHIFT	    =	26
-
-var S_RESTORE_PC_HI_RCNT_SHIFT				=	S_SAVE_PC_HI_RCNT_SHIFT
-var S_RESTORE_PC_HI_RCNT_MASK				=   S_SAVE_PC_HI_RCNT_MASK
-var S_RESTORE_PC_HI_FIRST_REPLAY_SHIFT		=	S_SAVE_PC_HI_FIRST_REPLAY_SHIFT
-var S_RESTORE_PC_HI_FIRST_REPLAY_MASK		=	S_SAVE_PC_HI_FIRST_REPLAY_MASK
-
-var s_restore_spi_init_lo                   =   exec_lo
-var s_restore_spi_init_hi                   =   exec_hi
-
-var s_restore_mem_offset		= 	ttmp2
-var s_restore_alloc_size		=	ttmp3
-var s_restore_tmp           	=   ttmp6				//tba_lo/hi need to be restored
-var s_restore_mem_offset_save	= 	s_restore_tmp 		//no conflict
-
-var s_restore_m0			=	s_restore_alloc_size	//no conflict			
-
-var s_restore_mode			=  	ttmp7
-
-var	s_restore_pc_lo		    =	ttmp0			
-var	s_restore_pc_hi		    =	ttmp1
-var s_restore_exec_lo		=	tma_lo					//no conflict
-var s_restore_exec_hi		= 	tma_hi					//no conflict
-var	s_restore_status	    =	ttmp4			
-var	s_restore_trapsts	    =	ttmp5
-var s_restore_xnack_mask_lo	=	xnack_mask_lo
-var s_restore_xnack_mask_hi	=	xnack_mask_hi
-var	s_restore_buf_rsrc0		=	ttmp8
-var	s_restore_buf_rsrc1		=	ttmp9
-var	s_restore_buf_rsrc2		=	ttmp10
-var	s_restore_buf_rsrc3		=	ttmp11
-
-/**************************************************************************/
-/*                     	trap handler entry points			              */
-/**************************************************************************/
-/* Shader Main*/
-
-shader main
-  asic(VI)
-  type(CS)
-
-
-    if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_RESTORE_NORMAL)) 					//hack to use trap_id for determining save/restore
-		//FIXME VCCZ un-init assertion s_getreg_b32  	s_save_status, hwreg(HW_REG_STATUS)			//save STATUS since we will change SCC
-		s_and_b32 s_save_tmp, s_save_pc_hi, 0xffff0000 				//change SCC
-    	s_cmp_eq_u32 s_save_tmp, 0x007e0000  						//Save: trap_id = 0x7e. Restore: trap_id = 0x7f.  
-    	s_cbranch_scc0 L_JUMP_TO_RESTORE							//do not need to recover STATUS here  since we are going to RESTORE
-		//FIXME  s_setreg_b32 	hwreg(HW_REG_STATUS), 	s_save_status		//need to recover STATUS since we are going to SAVE	
-		s_branch L_SKIP_RESTORE 									//NOT restore, SAVE actually
-	else	
-		s_branch L_SKIP_RESTORE 									//NOT restore. might be a regular trap or save
-    end
-
-L_JUMP_TO_RESTORE:
-    s_branch L_RESTORE												//restore
-
-L_SKIP_RESTORE:
-	
-	s_getreg_b32  	s_save_status, hwreg(HW_REG_STATUS)								//save STATUS since we will change SCC
-	s_andn2_b32		s_save_status, s_save_status, SQ_WAVE_STATUS_SPI_PRIO_MASK      //check whether this is for save
-	s_getreg_b32  	s_save_trapsts, hwreg(HW_REG_TRAPSTS)    		 				
-	s_and_b32		s_save_trapsts, s_save_trapsts, SQ_WAVE_TRAPSTS_SAVECTX_MASK	//check whether this is for save  
-	s_cbranch_scc1	L_SAVE		     	  						//this is the operation for save
-
-    // *********    Handle non-CWSR traps       *******************
-if (!EMU_RUN_HACK)
-    /* read tba and tma for next level trap handler, ttmp4 is used as s_save_status */
-	s_load_dwordx4  [ttmp8,ttmp9,ttmp10, ttmp11], [tma_lo,tma_hi], 0 
-	s_waitcnt lgkmcnt(0)
-	s_or_b32        ttmp7, ttmp8, ttmp9
-	s_cbranch_scc0  L_NO_NEXT_TRAP //next level trap handler not been set
-	s_setreg_b32    hwreg(HW_REG_STATUS), s_save_status //restore HW status(SCC)
-	s_setpc_b64     [ttmp8,ttmp9] //jump to next level trap handler 
-
-L_NO_NEXT_TRAP:
-	s_getreg_b32    s_save_trapsts, hwreg(HW_REG_TRAPSTS)
-	s_and_b32       s_save_trapsts, s_save_trapsts, SQ_WAVE_TRAPSTS_EXCE_MASK // Check whether it is an exception
-	s_cbranch_scc1  L_EXCP_CASE   // Exception, jump back to the shader program directly.
-	s_add_u32       ttmp0, ttmp0, 4   // S_TRAP case, add 4 to ttmp0
-	s_addc_u32	ttmp1, ttmp1, 0
-L_EXCP_CASE:
-	s_and_b32	ttmp1, ttmp1, 0xFFFF
-	s_setreg_b32    hwreg(HW_REG_STATUS), s_save_status //restore HW status(SCC)   
-	s_rfe_b64    	[ttmp0, ttmp1]
-end
-    // *********        End handling of non-CWSR traps   *******************
-
-/**************************************************************************/
-/*                     	save routine						              */
-/**************************************************************************/
-
-L_SAVE:	
-
-if G8SR_DEBUG_TIMESTAMP
-        s_memrealtime	s_g8sr_ts_save_s
-        s_waitcnt lgkmcnt(0)         //FIXME, will cause xnack??
-end
-
-	//check whether there is mem_viol
-	s_getreg_b32  	s_save_trapsts, hwreg(HW_REG_TRAPSTS)    		 				
-	s_and_b32	s_save_trapsts, s_save_trapsts, SQ_WAVE_TRAPSTS_MEM_VIOL_MASK			
-	s_cbranch_scc0	L_NO_PC_REWIND
-    
-	//if so, need rewind PC assuming GDS operation gets NACKed
-	s_mov_b32       s_save_tmp, 0															//clear mem_viol bit
-	s_setreg_b32	hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_MEM_VIOL_SHIFT, 1), s_save_tmp	//clear mem_viol bit 
-	s_and_b32 		s_save_pc_hi, s_save_pc_hi, 0x0000ffff    //pc[47:32]
-	s_sub_u32 		s_save_pc_lo, s_save_pc_lo, 8             //pc[31:0]-8
-	s_subb_u32 		s_save_pc_hi, s_save_pc_hi, 0x0			  // -scc
-
-L_NO_PC_REWIND:
-    s_mov_b32       s_save_tmp, 0															//clear saveCtx bit
-	s_setreg_b32	hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_SAVECTX_SHIFT, 1), s_save_tmp		//clear saveCtx bit   
-
-	s_mov_b32		s_save_xnack_mask_lo,	xnack_mask_lo									//save XNACK_MASK  
-	s_mov_b32		s_save_xnack_mask_hi,	xnack_mask_hi    //save XNACK must before any memory operation
-	s_getreg_b32	s_save_tmp, hwreg(HW_REG_IB_STS, SQ_WAVE_IB_STS_RCNT_SHIFT, SQ_WAVE_IB_STS_RCNT_SIZE)					//save RCNT
-	s_lshl_b32		s_save_tmp, s_save_tmp, S_SAVE_PC_HI_RCNT_SHIFT
-	s_or_b32		s_save_pc_hi, s_save_pc_hi, s_save_tmp
-	s_getreg_b32	s_save_tmp, hwreg(HW_REG_IB_STS, SQ_WAVE_IB_STS_FIRST_REPLAY_SHIFT, SQ_WAVE_IB_STS_FIRST_REPLAY_SIZE)	//save FIRST_REPLAY
-	s_lshl_b32		s_save_tmp, s_save_tmp, S_SAVE_PC_HI_FIRST_REPLAY_SHIFT
-	s_or_b32		s_save_pc_hi, s_save_pc_hi, s_save_tmp
-	s_getreg_b32	s_save_tmp, hwreg(HW_REG_IB_STS)										//clear RCNT and FIRST_REPLAY in IB_STS
-	s_and_b32		s_save_tmp, s_save_tmp, SQ_WAVE_IB_STS_RCNT_FIRST_REPLAY_MASK_NEG
-
-	s_setreg_b32	hwreg(HW_REG_IB_STS), s_save_tmp
-    
-	/*		inform SPI the readiness and wait for SPI's go signal */
-	s_mov_b32		s_save_exec_lo,	exec_lo													//save EXEC and use EXEC for the go signal from SPI
-	s_mov_b32		s_save_exec_hi,	exec_hi
-	s_mov_b64		exec, 	0x0																//clear EXEC to get ready to receive
-
-if G8SR_DEBUG_TIMESTAMP
-        s_memrealtime  s_g8sr_ts_sq_save_msg
-        s_waitcnt lgkmcnt(0)
-end
-
-	if (EMU_RUN_HACK)
-	
-	else
-		s_sendmsg	sendmsg(MSG_SAVEWAVE)  //send SPI a message and wait for SPI's write to EXEC  
-	end
-
-  L_SLEEP:		
-	s_sleep 0x2                // sleep 1 (64clk) is not enough for 8 waves per SIMD, which will cause SQ hang, since the 7,8th wave could not get arbit to exec inst, while other waves are stuck into the sleep-loop and waiting for wrexec!=0
-	
-	if (EMU_RUN_HACK)
-																							
-	else
-		s_cbranch_execz	L_SLEEP                                                         
-	end
-
-if G8SR_DEBUG_TIMESTAMP
-        s_memrealtime  s_g8sr_ts_spi_wrexec
-        s_waitcnt lgkmcnt(0)
-end
-
-	/*      setup Resource Contants    */
-	if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_SAVE_SINGLE_WAVE))	
-		//calculate wd_addr using absolute thread id 
-		v_readlane_b32 s_save_tmp, v9, 0
-		s_lshr_b32 s_save_tmp, s_save_tmp, 6
-		s_mul_i32 s_save_tmp, s_save_tmp, WAVE_SPACE
-		s_add_i32 s_save_spi_init_lo, s_save_tmp, WG_BASE_ADDR_LO
-		s_mov_b32 s_save_spi_init_hi, WG_BASE_ADDR_HI
-		s_and_b32 s_save_spi_init_hi, s_save_spi_init_hi, CTX_SAVE_CONTROL		
-	else
-	end
-	if ((EMU_RUN_HACK) && (EMU_RUN_HACK_SAVE_SINGLE_WAVE))
-		s_add_i32 s_save_spi_init_lo, s_save_tmp, WG_BASE_ADDR_LO
-		s_mov_b32 s_save_spi_init_hi, WG_BASE_ADDR_HI
-		s_and_b32 s_save_spi_init_hi, s_save_spi_init_hi, CTX_SAVE_CONTROL		
-	else
-	end
-	
-	
-	s_mov_b32		s_save_buf_rsrc0, 	s_save_spi_init_lo														//base_addr_lo
-	s_and_b32		s_save_buf_rsrc1, 	s_save_spi_init_hi, 0x0000FFFF											//base_addr_hi
-	s_or_b32		s_save_buf_rsrc1, 	s_save_buf_rsrc1,  S_SAVE_BUF_RSRC_WORD1_STRIDE
-    s_mov_b32       s_save_buf_rsrc2,   0                                               						//NUM_RECORDS initial value = 0 (in bytes) although not neccessarily inited
-	s_mov_b32		s_save_buf_rsrc3, 	S_SAVE_BUF_RSRC_WORD3_MISC
-	s_and_b32		s_save_tmp,         s_save_spi_init_hi, S_SAVE_SPI_INIT_ATC_MASK		
-	s_lshr_b32		s_save_tmp,  		s_save_tmp, (S_SAVE_SPI_INIT_ATC_SHIFT-SQ_BUF_RSRC_WORD1_ATC_SHIFT)			//get ATC bit into position
-	s_or_b32		s_save_buf_rsrc3, 	s_save_buf_rsrc3,  s_save_tmp											//or ATC
-	s_and_b32		s_save_tmp,         s_save_spi_init_hi, S_SAVE_SPI_INIT_MTYPE_MASK		
-	s_lshr_b32		s_save_tmp,  		s_save_tmp, (S_SAVE_SPI_INIT_MTYPE_SHIFT-SQ_BUF_RSRC_WORD3_MTYPE_SHIFT)		//get MTYPE bits into position
-	s_or_b32		s_save_buf_rsrc3, 	s_save_buf_rsrc3,  s_save_tmp											//or MTYPE	
-	
-	//FIXME  right now s_save_m0/s_save_mem_offset use tma_lo/tma_hi  (might need to save them before using them?)
-	s_mov_b32		s_save_m0,			m0																	//save M0
-	
-	/* 		global mem offset			*/
-	s_mov_b32		s_save_mem_offset, 	0x0																		//mem offset initial value = 0
-
-
-
-
-	/* 		save HW registers	*/
-	//////////////////////////////
-
-  L_SAVE_HWREG:
-        // HWREG SR memory offset : size(VGPR)+size(SGPR)
-       get_vgpr_size_bytes(s_save_mem_offset)
-       get_sgpr_size_bytes(s_save_tmp)
-       s_add_u32 s_save_mem_offset, s_save_mem_offset, s_save_tmp
-
-
-    s_mov_b32		s_save_buf_rsrc2, 0x4								//NUM_RECORDS	in bytes
-	if (SWIZZLE_EN)
-		s_add_u32		s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0						//FIXME need to use swizzle to enable bounds checking?
-	else
-		s_mov_b32		s_save_buf_rsrc2,  0x1000000								//NUM_RECORDS in bytes
-	end
-
-	
-	write_hwreg_to_mem(s_save_m0, s_save_buf_rsrc0, s_save_mem_offset)					//M0
-
-	if ((EMU_RUN_HACK) && (EMU_RUN_HACK_SAVE_FIRST_TIME))      
-		s_add_u32 s_save_pc_lo, s_save_pc_lo, 4             //pc[31:0]+4
-		s_addc_u32 s_save_pc_hi, s_save_pc_hi, 0x0			//carry bit over
-		s_mov_b32	tba_lo, EMU_RUN_HACK_SAVE_FIRST_TIME_TBA_LO
-	    s_mov_b32	tba_hi, EMU_RUN_HACK_SAVE_FIRST_TIME_TBA_HI	
-	end
-
-	write_hwreg_to_mem(s_save_pc_lo, s_save_buf_rsrc0, s_save_mem_offset)					//PC
-	write_hwreg_to_mem(s_save_pc_hi, s_save_buf_rsrc0, s_save_mem_offset)
-	write_hwreg_to_mem(s_save_exec_lo, s_save_buf_rsrc0, s_save_mem_offset)				//EXEC
-	write_hwreg_to_mem(s_save_exec_hi, s_save_buf_rsrc0, s_save_mem_offset)
-	write_hwreg_to_mem(s_save_status, s_save_buf_rsrc0, s_save_mem_offset)				//STATUS 
-	
-	//s_save_trapsts conflicts with s_save_alloc_size
-	s_getreg_b32    s_save_trapsts, hwreg(HW_REG_TRAPSTS)
-	write_hwreg_to_mem(s_save_trapsts, s_save_buf_rsrc0, s_save_mem_offset)				//TRAPSTS
-	
-	write_hwreg_to_mem(s_save_xnack_mask_lo, s_save_buf_rsrc0, s_save_mem_offset)			//XNACK_MASK_LO
-	write_hwreg_to_mem(s_save_xnack_mask_hi, s_save_buf_rsrc0, s_save_mem_offset)			//XNACK_MASK_HI
-	
-	//use s_save_tmp would introduce conflict here between s_save_tmp and s_save_buf_rsrc2
-	s_getreg_b32 	s_save_m0, hwreg(HW_REG_MODE)                                                   //MODE
-	write_hwreg_to_mem(s_save_m0, s_save_buf_rsrc0, s_save_mem_offset)
-	write_hwreg_to_mem(tba_lo, s_save_buf_rsrc0, s_save_mem_offset)						//TBA_LO
-	write_hwreg_to_mem(tba_hi, s_save_buf_rsrc0, s_save_mem_offset)						//TBA_HI
-
-
-
-	/*      the first wave in the threadgroup    */
-        // save fist_wave bits in tba_hi unused bit.26
-	s_and_b32		s_save_tmp, s_save_spi_init_hi, S_SAVE_SPI_INIT_FIRST_WAVE_MASK     // extract fisrt wave bit
-    //s_or_b32        tba_hi, s_save_tmp, tba_hi                                        // save first wave bit to tba_hi.bits[26]
-    s_mov_b32        s_save_exec_hi, 0x0                                
-    s_or_b32         s_save_exec_hi, s_save_tmp, s_save_exec_hi                          // save first wave bit to s_save_exec_hi.bits[26]
-
-
-	/*      	save SGPRs	    */
-        // Save SGPR before LDS save, then the s0 to s4 can be used during LDS save...
-	//////////////////////////////
-
-    // SGPR SR memory offset : size(VGPR)	
-    get_vgpr_size_bytes(s_save_mem_offset)
-    // TODO, change RSRC word to rearrange memory layout for SGPRS
-
-	s_getreg_b32 	s_save_alloc_size, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SIZE) 				//spgr_size
-	s_add_u32 		s_save_alloc_size, s_save_alloc_size, 1
-	s_lshl_b32 		s_save_alloc_size, s_save_alloc_size, 4 						//Number of SGPRs = (sgpr_size + 1) * 16   (non-zero value) 
-	
-	if (SGPR_SAVE_USE_SQC)
-		s_lshl_b32		s_save_buf_rsrc2,	s_save_alloc_size, 2					//NUM_RECORDS in bytes 
-	else
-		s_lshl_b32		s_save_buf_rsrc2,	s_save_alloc_size, 8					//NUM_RECORDS in bytes (64 threads)
-	end
-	
-	if (SWIZZLE_EN)
-		s_add_u32		s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0						//FIXME need to use swizzle to enable bounds checking?
-	else
-		s_mov_b32		s_save_buf_rsrc2,  0x1000000								//NUM_RECORDS in bytes
-	end
-
-
-	// backup s_save_buf_rsrc0,1 to s_save_pc_lo/hi, since write_16sgpr_to_mem function will change the rsrc0
-    //s_mov_b64 s_save_pc_lo, s_save_buf_rsrc0
-    s_mov_b64 s_save_xnack_mask_lo, s_save_buf_rsrc0
-    s_add_u32 s_save_buf_rsrc0, s_save_buf_rsrc0, s_save_mem_offset
-    s_addc_u32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0
-
-	s_mov_b32 		m0, 0x0 						//SGPR initial index value =0		
-  L_SAVE_SGPR_LOOP: 					
-    // SGPR is allocated in 16 SGPR granularity					
-	s_movrels_b64 	s0, s0     //s0 = s[0+m0], s1 = s[1+m0]
-    s_movrels_b64   s2, s2     //s2 = s[2+m0], s3 = s[3+m0]
-	s_movrels_b64 	s4, s4     //s4 = s[4+m0], s5 = s[5+m0]
-    s_movrels_b64   s6, s6     //s6 = s[6+m0], s7 = s[7+m0]
-	s_movrels_b64 	s8, s8     //s8 = s[8+m0], s9 = s[9+m0]
-    s_movrels_b64   s10, s10   //s10 = s[10+m0], s11 = s[11+m0]
-	s_movrels_b64 	s12, s12   //s12 = s[12+m0], s13 = s[13+m0]
-    s_movrels_b64   s14, s14   //s14 = s[14+m0], s15 = s[15+m0]
-
-	write_16sgpr_to_mem(s0, s_save_buf_rsrc0, s_save_mem_offset) //PV: the best performance should be using s_buffer_store_dwordx4
-	s_add_u32		m0, m0, 16														//next sgpr index
-	s_cmp_lt_u32 	m0, s_save_alloc_size 											//scc = (m0 < s_save_alloc_size) ? 1 : 0
-	s_cbranch_scc1 	L_SAVE_SGPR_LOOP									//SGPR save is complete?
-    // restore s_save_buf_rsrc0,1
-    //s_mov_b64 s_save_buf_rsrc0, s_save_pc_lo
-    s_mov_b64 s_save_buf_rsrc0, s_save_xnack_mask_lo
-
-
-
-
-	/*      	save first 4 VGPR, then LDS save could use   */
-        // each wave will alloc 4 vgprs at least...
-	/////////////////////////////////////////////////////////////////////////////////////
-
-    s_mov_b32       s_save_mem_offset, 0
- 	s_mov_b32		exec_lo, 0xFFFFFFFF 											//need every thread from now on
-	s_mov_b32		exec_hi, 0xFFFFFFFF
-	
-	if (SWIZZLE_EN)
-		s_add_u32		s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0						//FIXME need to use swizzle to enable bounds checking?
-	else
-		s_mov_b32		s_save_buf_rsrc2,  0x1000000								//NUM_RECORDS in bytes
-	end
-
-
-	// VGPR Allocated in 4-GPR granularity
-
-if G8SR_VGPR_SR_IN_DWX4
-        // the const stride for DWx4 is 4*4 bytes
-        s_and_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0x0000FFFF   // reset const stride to 0
-        s_or_b32  s_save_buf_rsrc1, s_save_buf_rsrc1, G8SR_SAVE_BUF_RSRC_WORD1_STRIDE_DWx4  // const stride to 4*4 bytes
-        
-        buffer_store_dwordx4 v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1
-
-        s_and_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0x0000FFFF   // reset const stride to 0
-        s_or_b32  s_save_buf_rsrc1, s_save_buf_rsrc1, S_SAVE_BUF_RSRC_WORD1_STRIDE  // reset const stride to 4 bytes
-else
-		buffer_store_dword v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1
-		buffer_store_dword v1, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256
-		buffer_store_dword v2, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256*2
-		buffer_store_dword v3, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256*3
-end
-
-
-
-	/*      	save LDS	    */
-	//////////////////////////////
-	
-  L_SAVE_LDS:
-
-        // Change EXEC to all threads...	
-	s_mov_b32		exec_lo, 0xFFFFFFFF   //need every thread from now on   
-	s_mov_b32		exec_hi, 0xFFFFFFFF
-	
-	s_getreg_b32 	s_save_alloc_size, hwreg(HW_REG_LDS_ALLOC,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE) 			//lds_size
-	s_and_b32		s_save_alloc_size, s_save_alloc_size, 0xFFFFFFFF				//lds_size is zero?
-	s_cbranch_scc0	L_SAVE_LDS_DONE                                                                            //no lds used? jump to L_SAVE_DONE
-
-	s_barrier               //LDS is used? wait for other waves in the same TG 
-	//s_and_b32		s_save_tmp, tba_hi, S_SAVE_SPI_INIT_FIRST_WAVE_MASK                //exec is still used here     
-    s_and_b32		s_save_tmp, s_save_exec_hi, S_SAVE_SPI_INIT_FIRST_WAVE_MASK                //exec is still used here
-	s_cbranch_scc0	L_SAVE_LDS_DONE
-
-        // first wave do LDS save;
-        
-	s_lshl_b32 		s_save_alloc_size, s_save_alloc_size, 6 						//LDS size in dwords = lds_size * 64dw
-	s_lshl_b32 		s_save_alloc_size, s_save_alloc_size, 2 						//LDS size in bytes
-	s_mov_b32		s_save_buf_rsrc2,  s_save_alloc_size  							//NUM_RECORDS in bytes
-
-    // LDS at offset: size(VGPR)+SIZE(SGPR)+SIZE(HWREG)
-    // 
-    get_vgpr_size_bytes(s_save_mem_offset)
-    get_sgpr_size_bytes(s_save_tmp)
-    s_add_u32  s_save_mem_offset, s_save_mem_offset, s_save_tmp
-    s_add_u32 s_save_mem_offset, s_save_mem_offset, get_hwreg_size_bytes()
-
-
-	if (SWIZZLE_EN)
-		s_add_u32		s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0	      //FIXME need to use swizzle to enable bounds checking?
-	else
-		s_mov_b32		s_save_buf_rsrc2,  0x1000000                  //NUM_RECORDS in bytes
-	end
-
-	s_mov_b32 		m0, 0x0                                               //lds_offset initial value = 0
-
-
-var LDS_DMA_ENABLE = 0
-var UNROLL = 0
-if UNROLL==0 && LDS_DMA_ENABLE==1
-        s_mov_b32  s3, 256*2
-        s_nop 0
-        s_nop 0
-        s_nop 0
-  L_SAVE_LDS_LOOP:
-        //TODO: looks the 2 buffer_store/load clause for s/r will hurt performance.???
-	if (SAVE_LDS)     //SPI always alloc LDS space in 128DW granularity
-            buffer_store_lds_dword s_save_buf_rsrc0, s_save_mem_offset lds:1            // first 64DW
-            buffer_store_lds_dword s_save_buf_rsrc0, s_save_mem_offset lds:1 offset:256 // second 64DW
-	end
-
-	s_add_u32		m0, m0, s3											//every buffer_store_lds does 256 bytes
-	s_add_u32		s_save_mem_offset, s_save_mem_offset, s3							//mem offset increased by 256 bytes
-	s_cmp_lt_u32	m0, s_save_alloc_size												//scc=(m0 < s_save_alloc_size) ? 1 : 0
-	s_cbranch_scc1  L_SAVE_LDS_LOOP														//LDS save is complete?
-
-elsif LDS_DMA_ENABLE==1 && UNROLL==1 // UNROOL  , has ichace miss
-      // store from higest LDS address to lowest
-      s_mov_b32  s3, 256*2
-      s_sub_u32  m0, s_save_alloc_size, s3
-      s_add_u32 s_save_mem_offset, s_save_mem_offset, m0
-      s_lshr_b32 s_save_alloc_size, s_save_alloc_size, 9   // how many 128 trunks...
-      s_sub_u32 s_save_alloc_size, 128, s_save_alloc_size   // store from higheset addr to lowest
-      s_mul_i32 s_save_alloc_size, s_save_alloc_size, 6*4   // PC offset increment,  each LDS save block cost 6*4 Bytes instruction
-      s_add_u32 s_save_alloc_size, s_save_alloc_size, 3*4   //2is the below 2 inst...//s_addc and s_setpc
-      s_nop 0
-      s_nop 0
-      s_nop 0   //pad 3 dw to let LDS_DMA align with 64Bytes
-      s_getpc_b64 s[0:1]                              // reuse s[0:1], since s[0:1] already saved
-      s_add_u32   s0, s0,s_save_alloc_size
-      s_addc_u32  s1, s1, 0
-      s_setpc_b64 s[0:1]
-      
-
-       for var i =0; i< 128; i++    
-            // be careful to make here a 64Byte aligned address, which could improve performance...
-            buffer_store_lds_dword s_save_buf_rsrc0, s_save_mem_offset lds:1 offset:0           // first 64DW
-            buffer_store_lds_dword s_save_buf_rsrc0, s_save_mem_offset lds:1 offset:256           // second 64DW
-
-	    if i!=127
-		s_sub_u32  m0, m0, s3      // use a sgpr to shrink 2DW-inst to 1DW inst to improve performance , i.e.  pack more LDS_DMA inst to one Cacheline
-	    	s_sub_u32  s_save_mem_offset, s_save_mem_offset,  s3
-            end
-       end
-
-else   // BUFFER_STORE
-      v_mbcnt_lo_u32_b32 v2, 0xffffffff, 0x0
-      v_mbcnt_hi_u32_b32 v3, 0xffffffff, v2     // tid
-      v_mul_i32_i24 v2, v3, 8   // tid*8
-      v_mov_b32 v3, 256*2
-      s_mov_b32 m0, 0x10000
-      s_mov_b32 s0, s_save_buf_rsrc3
-      s_and_b32 s_save_buf_rsrc3, s_save_buf_rsrc3, 0xFF7FFFFF    // disable add_tid 
-      s_or_b32 s_save_buf_rsrc3, s_save_buf_rsrc3, 0x58000   //DFMT
-
-L_SAVE_LDS_LOOP_VECTOR:
-      ds_read_b64 v[0:1], v2    //x =LDS[a], byte address
-      s_waitcnt lgkmcnt(0)
-      buffer_store_dwordx2  v[0:1], v2, s_save_buf_rsrc0, s_save_mem_offset offen:1  glc:1  slc:1
-//      s_waitcnt vmcnt(0)
-      v_add_u32 v2, vcc[0:1], v2, v3
-      v_cmp_lt_u32 vcc[0:1], v2, s_save_alloc_size
-      s_cbranch_vccnz L_SAVE_LDS_LOOP_VECTOR
-
-      // restore rsrc3
-      s_mov_b32 s_save_buf_rsrc3, s0
-      
-end
-
-L_SAVE_LDS_DONE:	
-
-
-	/*      	save VGPRs  - set the Rest VGPRs	    */
-	//////////////////////////////////////////////////////////////////////////////////////
-  L_SAVE_VGPR:
-    // VGPR SR memory offset: 0
-    // TODO rearrange the RSRC words to use swizzle for VGPR save...
-  
-    s_mov_b32       s_save_mem_offset, (0+256*4)                                    // for the rest VGPRs
- 	s_mov_b32		exec_lo, 0xFFFFFFFF 											//need every thread from now on
-	s_mov_b32		exec_hi, 0xFFFFFFFF
-	
-	s_getreg_b32 	s_save_alloc_size, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE) 					//vpgr_size
-	s_add_u32 		s_save_alloc_size, s_save_alloc_size, 1
-	s_lshl_b32 		s_save_alloc_size, s_save_alloc_size, 2 						//Number of VGPRs = (vgpr_size + 1) * 4    (non-zero value)   //FIXME for GFX, zero is possible 
-	s_lshl_b32		s_save_buf_rsrc2,  s_save_alloc_size, 8							//NUM_RECORDS in bytes (64 threads*4)
-	if (SWIZZLE_EN)
-		s_add_u32		s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0						//FIXME need to use swizzle to enable bounds checking?
-	else
-		s_mov_b32		s_save_buf_rsrc2,  0x1000000								//NUM_RECORDS in bytes
-	end
-
-
-	// VGPR Allocated in 4-GPR granularity
-
-if G8SR_VGPR_SR_IN_DWX4
-        // the const stride for DWx4 is 4*4 bytes
-        s_and_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0x0000FFFF   // reset const stride to 0
-        s_or_b32  s_save_buf_rsrc1, s_save_buf_rsrc1, G8SR_SAVE_BUF_RSRC_WORD1_STRIDE_DWx4  // const stride to 4*4 bytes
-        
-        s_mov_b32         m0, 4     // skip first 4 VGPRs
-        s_cmp_lt_u32      m0, s_save_alloc_size
-        s_cbranch_scc0    L_SAVE_VGPR_LOOP_END      // no more vgprs
-
-        s_set_gpr_idx_on  m0, 0x1   // This will change M0
-        s_add_u32         s_save_alloc_size, s_save_alloc_size, 0x1000  // because above inst change m0
-L_SAVE_VGPR_LOOP:
-        v_mov_b32         v0, v0   // v0 = v[0+m0]
-        v_mov_b32         v1, v1
-        v_mov_b32         v2, v2
-        v_mov_b32         v3, v3
-
-
-        buffer_store_dwordx4 v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1
-        s_add_u32         m0, m0, 4
-        s_add_u32         s_save_mem_offset, s_save_mem_offset, 256*4
-        s_cmp_lt_u32      m0, s_save_alloc_size
-	s_cbranch_scc1 	L_SAVE_VGPR_LOOP												//VGPR save is complete?
-	s_set_gpr_idx_off
-L_SAVE_VGPR_LOOP_END:
-
-        s_and_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0x0000FFFF   // reset const stride to 0
-        s_or_b32  s_save_buf_rsrc1, s_save_buf_rsrc1, S_SAVE_BUF_RSRC_WORD1_STRIDE  // reset const stride to 4 bytes
-else
-    // VGPR store using dw burst	
-    s_mov_b32 		  m0, 0x4   //VGPR initial index value =0
-    s_cmp_lt_u32      m0, s_save_alloc_size
-    s_cbranch_scc0    L_SAVE_VGPR_END
-
-
-    s_set_gpr_idx_on    m0, 0x1 //M0[7:0] = M0[7:0] and M0[15:12] = 0x1
-    s_add_u32		s_save_alloc_size, s_save_alloc_size, 0x1000					//add 0x1000 since we compare m0 against it later	
-
-  L_SAVE_VGPR_LOOP: 										
-	v_mov_b32 		v0, v0				//v0 = v[0+m0]	
-	v_mov_b32 		v1, v1				//v0 = v[0+m0]	
-	v_mov_b32 		v2, v2				//v0 = v[0+m0]	
-	v_mov_b32 		v3, v3				//v0 = v[0+m0]	
-	    
-    if(USE_MTBUF_INSTEAD_OF_MUBUF)       
-		tbuffer_store_format_x v0, v0, s_save_buf_rsrc0, s_save_mem_offset format:BUF_NUM_FORMAT_FLOAT format: BUF_DATA_FORMAT_32 slc:1 glc:1
-    else
-		buffer_store_dword v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1
-		buffer_store_dword v1, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256
-		buffer_store_dword v2, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256*2
-		buffer_store_dword v3, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256*3
-	end
-
-    s_add_u32		m0, m0, 4														//next vgpr index
-	s_add_u32		s_save_mem_offset, s_save_mem_offset, 256*4						//every buffer_store_dword does 256 bytes
-	s_cmp_lt_u32 	m0,	s_save_alloc_size 											//scc = (m0 < s_save_alloc_size) ? 1 : 0
-	s_cbranch_scc1 	L_SAVE_VGPR_LOOP												//VGPR save is complete?
-	s_set_gpr_idx_off
-end
-	
-L_SAVE_VGPR_END:
-
-
-
-
-
-	
-	/*     S_PGM_END_SAVED  */    							//FIXME  graphics ONLY
-	if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_SAVE_NORMAL_EXIT))	
-		s_and_b32 s_save_pc_hi, s_save_pc_hi, 0x0000ffff    //pc[47:32]
-		s_add_u32 s_save_pc_lo, s_save_pc_lo, 4             //pc[31:0]+4
-		s_addc_u32 s_save_pc_hi, s_save_pc_hi, 0x0			//carry bit over
-		s_rfe_b64 s_save_pc_lo                              //Return to the main shader program
-	else
-	end
-
-// Save Done timestamp 
-if G8SR_DEBUG_TIMESTAMP
-        s_memrealtime	s_g8sr_ts_save_d
-        // SGPR SR memory offset : size(VGPR)	
-        get_vgpr_size_bytes(s_save_mem_offset)
-        s_add_u32 s_save_mem_offset, s_save_mem_offset, G8SR_DEBUG_TS_SAVE_D_OFFSET
-        s_waitcnt lgkmcnt(0)         //FIXME, will cause xnack??
-        // Need reset rsrc2??
-        s_mov_b32 m0, s_save_mem_offset
-        s_mov_b32 s_save_buf_rsrc2,  0x1000000                                  //NUM_RECORDS in bytes
-        s_buffer_store_dwordx2 s_g8sr_ts_save_d, s_save_buf_rsrc0, m0		glc:1	
-end
-
-	
-    s_branch	L_END_PGM
-	
-
-				
-/**************************************************************************/
-/*                     	restore routine						              */
-/**************************************************************************/
-
-L_RESTORE:
-    /*      Setup Resource Contants    */
-    if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_RESTORE_NORMAL))
-		//calculate wd_addr using absolute thread id
-		v_readlane_b32 s_restore_tmp, v9, 0
-		s_lshr_b32 s_restore_tmp, s_restore_tmp, 6
-		s_mul_i32 s_restore_tmp, s_restore_tmp, WAVE_SPACE
-		s_add_i32 s_restore_spi_init_lo, s_restore_tmp, WG_BASE_ADDR_LO
-		s_mov_b32 s_restore_spi_init_hi, WG_BASE_ADDR_HI
-		s_and_b32 s_restore_spi_init_hi, s_restore_spi_init_hi, CTX_RESTORE_CONTROL	
-	else
-	end
-
-if G8SR_DEBUG_TIMESTAMP
-        s_memrealtime	s_g8sr_ts_restore_s
-        s_waitcnt lgkmcnt(0)         //FIXME, will cause xnack??
-        // tma_lo/hi are sgpr 110, 111, which will not used for 112 SGPR allocated case...
-        s_mov_b32 s_restore_pc_lo, s_g8sr_ts_restore_s[0]
-        s_mov_b32 s_restore_pc_hi, s_g8sr_ts_restore_s[1]   //backup ts to ttmp0/1, sicne exec will be finally restored..
-end
-
-
-	
-    s_mov_b32		s_restore_buf_rsrc0, 	s_restore_spi_init_lo															//base_addr_lo
-	s_and_b32		s_restore_buf_rsrc1, 	s_restore_spi_init_hi, 0x0000FFFF												//base_addr_hi
-	s_or_b32		s_restore_buf_rsrc1, 	s_restore_buf_rsrc1,  S_RESTORE_BUF_RSRC_WORD1_STRIDE
-    s_mov_b32       s_restore_buf_rsrc2,   	0                                               								//NUM_RECORDS initial value = 0 (in bytes)
-	s_mov_b32		s_restore_buf_rsrc3, 	S_RESTORE_BUF_RSRC_WORD3_MISC
-	s_and_b32		s_restore_tmp,         	s_restore_spi_init_hi, S_RESTORE_SPI_INIT_ATC_MASK		
-	s_lshr_b32		s_restore_tmp,  		s_restore_tmp, (S_RESTORE_SPI_INIT_ATC_SHIFT-SQ_BUF_RSRC_WORD1_ATC_SHIFT)		//get ATC bit into position
-	s_or_b32		s_restore_buf_rsrc3, 	s_restore_buf_rsrc3,  s_restore_tmp												//or ATC
-	s_and_b32		s_restore_tmp,         	s_restore_spi_init_hi, S_RESTORE_SPI_INIT_MTYPE_MASK		
-	s_lshr_b32		s_restore_tmp,  		s_restore_tmp, (S_RESTORE_SPI_INIT_MTYPE_SHIFT-SQ_BUF_RSRC_WORD3_MTYPE_SHIFT)	//get MTYPE bits into position
-	s_or_b32		s_restore_buf_rsrc3, 	s_restore_buf_rsrc3,  s_restore_tmp												//or MTYPE
-	
-	/* 		global mem offset			*/
-//	s_mov_b32		s_restore_mem_offset, 0x0								//mem offset initial value = 0
-	
-	/*      the first wave in the threadgroup    */
-	s_and_b32		s_restore_tmp, s_restore_spi_init_hi, S_RESTORE_SPI_INIT_FIRST_WAVE_MASK			
-	s_cbranch_scc0	L_RESTORE_VGPR
-
-    /*      	restore LDS	    */
-	//////////////////////////////
-  L_RESTORE_LDS:
-
-	s_mov_b32		exec_lo, 0xFFFFFFFF 													//need every thread from now on   //be consistent with SAVE although can be moved ahead
-	s_mov_b32		exec_hi, 0xFFFFFFFF
-	
-	s_getreg_b32 	s_restore_alloc_size, hwreg(HW_REG_LDS_ALLOC,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE) 				//lds_size
-	s_and_b32		s_restore_alloc_size, s_restore_alloc_size, 0xFFFFFFFF					//lds_size is zero?
-	s_cbranch_scc0	L_RESTORE_VGPR															//no lds used? jump to L_RESTORE_VGPR
-	s_lshl_b32 		s_restore_alloc_size, s_restore_alloc_size, 6 							//LDS size in dwords = lds_size * 64dw
-	s_lshl_b32 		s_restore_alloc_size, s_restore_alloc_size, 2 							//LDS size in bytes
-	s_mov_b32		s_restore_buf_rsrc2,	s_restore_alloc_size							//NUM_RECORDS in bytes
-
-    // LDS at offset: size(VGPR)+SIZE(SGPR)+SIZE(HWREG)
-    // 
-    get_vgpr_size_bytes(s_restore_mem_offset)
-    get_sgpr_size_bytes(s_restore_tmp)
-    s_add_u32  s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp
-    s_add_u32  s_restore_mem_offset, s_restore_mem_offset, get_hwreg_size_bytes()            //FIXME, Check if offset overflow???
-
-
-	if (SWIZZLE_EN)
-		s_add_u32		s_restore_buf_rsrc2, s_restore_buf_rsrc2, 0x0						//FIXME need to use swizzle to enable bounds checking?
-	else
-		s_mov_b32		s_restore_buf_rsrc2,  0x1000000										//NUM_RECORDS in bytes
-	end
-	s_mov_b32 		m0, 0x0 																//lds_offset initial value = 0
-
-  L_RESTORE_LDS_LOOP:									
-	if (SAVE_LDS)
-	    buffer_load_dword	v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset lds:1                    // first 64DW
-	    buffer_load_dword	v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset lds:1 offset:256         // second 64DW
-	end
-    s_add_u32		m0, m0, 256*2					                            // 128 DW
-	s_add_u32		s_restore_mem_offset, s_restore_mem_offset, 256*2           //mem offset increased by 128DW
-	s_cmp_lt_u32	m0, s_restore_alloc_size                                    //scc=(m0 < s_restore_alloc_size) ? 1 : 0
-	s_cbranch_scc1  L_RESTORE_LDS_LOOP														//LDS restore is complete?
-
-    
-    /*      	restore VGPRs	    */
-	//////////////////////////////
-  L_RESTORE_VGPR:
-        // VGPR SR memory offset : 0	
-	s_mov_b32		s_restore_mem_offset, 0x0
- 	s_mov_b32		exec_lo, 0xFFFFFFFF 													//need every thread from now on   //be consistent with SAVE although can be moved ahead
-	s_mov_b32		exec_hi, 0xFFFFFFFF
-	
-	s_getreg_b32 	s_restore_alloc_size, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE) 	//vpgr_size
-	s_add_u32 		s_restore_alloc_size, s_restore_alloc_size, 1
-	s_lshl_b32 		s_restore_alloc_size, s_restore_alloc_size, 2 							//Number of VGPRs = (vgpr_size + 1) * 4    (non-zero value)
-    s_lshl_b32		s_restore_buf_rsrc2,  s_restore_alloc_size, 8						    //NUM_RECORDS in bytes (64 threads*4)
-	if (SWIZZLE_EN)
-		s_add_u32		s_restore_buf_rsrc2, s_restore_buf_rsrc2, 0x0						//FIXME need to use swizzle to enable bounds checking?
-	else
-		s_mov_b32		s_restore_buf_rsrc2,  0x1000000										//NUM_RECORDS in bytes
-	end
-
-if G8SR_VGPR_SR_IN_DWX4
-     get_vgpr_size_bytes(s_restore_mem_offset)
-     s_sub_u32         s_restore_mem_offset, s_restore_mem_offset, 256*4
-
-     // the const stride for DWx4 is 4*4 bytes
-     s_and_b32 s_restore_buf_rsrc1, s_restore_buf_rsrc1, 0x0000FFFF   // reset const stride to 0
-     s_or_b32  s_restore_buf_rsrc1, s_restore_buf_rsrc1, G8SR_RESTORE_BUF_RSRC_WORD1_STRIDE_DWx4  // const stride to 4*4 bytes
-
-     s_mov_b32         m0, s_restore_alloc_size
-     s_set_gpr_idx_on  m0, 0x8    // Note.. This will change m0
-
-L_RESTORE_VGPR_LOOP:
-     buffer_load_dwordx4 v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1
-     s_waitcnt vmcnt(0)
-     s_sub_u32         m0, m0, 4
-     v_mov_b32         v0, v0   // v[0+m0] = v0
-     v_mov_b32         v1, v1
-     v_mov_b32         v2, v2
-     v_mov_b32         v3, v3
-     s_sub_u32         s_restore_mem_offset, s_restore_mem_offset, 256*4
-     s_cmp_eq_u32      m0, 0x8000
-     s_cbranch_scc0    L_RESTORE_VGPR_LOOP
-     s_set_gpr_idx_off
-
-     s_and_b32 s_restore_buf_rsrc1, s_restore_buf_rsrc1, 0x0000FFFF   // reset const stride to 0
-     s_or_b32  s_restore_buf_rsrc1, s_restore_buf_rsrc1, S_RESTORE_BUF_RSRC_WORD1_STRIDE  // const stride to 4*4 bytes
-
-else
-	// VGPR load using dw burst
-	s_mov_b32		s_restore_mem_offset_save, s_restore_mem_offset		// restore start with v1, v0 will be the last
-	s_add_u32		s_restore_mem_offset, s_restore_mem_offset, 256*4
-    s_mov_b32 		m0, 4 			     				//VGPR initial index value = 1
-	s_set_gpr_idx_on  m0, 0x8						//M0[7:0] = M0[7:0] and M0[15:12] = 0x8
-    s_add_u32		s_restore_alloc_size, s_restore_alloc_size, 0x8000						//add 0x8000 since we compare m0 against it later	
-
-  L_RESTORE_VGPR_LOOP: 										
-    if(USE_MTBUF_INSTEAD_OF_MUBUF)       
-		tbuffer_load_format_x v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset format:BUF_NUM_FORMAT_FLOAT format: BUF_DATA_FORMAT_32 slc:1 glc:1
-    else
-		buffer_load_dword v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset	slc:1 glc:1	
-		buffer_load_dword v1, v0, s_restore_buf_rsrc0, s_restore_mem_offset	slc:1 glc:1	offset:256
-		buffer_load_dword v2, v0, s_restore_buf_rsrc0, s_restore_mem_offset	slc:1 glc:1	offset:256*2
-		buffer_load_dword v3, v0, s_restore_buf_rsrc0, s_restore_mem_offset	slc:1 glc:1	offset:256*3
-	end
-	s_waitcnt		vmcnt(0)																//ensure data ready
-	v_mov_b32		v0, v0																	//v[0+m0] = v0
-    v_mov_b32       v1, v1
-    v_mov_b32       v2, v2
-    v_mov_b32       v3, v3
-    s_add_u32		m0, m0, 4																//next vgpr index
-	s_add_u32		s_restore_mem_offset, s_restore_mem_offset, 256*4							//every buffer_load_dword does 256 bytes
-	s_cmp_lt_u32 	m0,	s_restore_alloc_size 												//scc = (m0 < s_restore_alloc_size) ? 1 : 0
-	s_cbranch_scc1 	L_RESTORE_VGPR_LOOP														//VGPR restore (except v0) is complete?
-	s_set_gpr_idx_off
-																							/* VGPR restore on v0 */
-    if(USE_MTBUF_INSTEAD_OF_MUBUF)       
-		tbuffer_load_format_x v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save format:BUF_NUM_FORMAT_FLOAT format: BUF_DATA_FORMAT_32 slc:1 glc:1
-    else
-		buffer_load_dword v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save	slc:1 glc:1	
-		buffer_load_dword v1, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save	slc:1 glc:1	offset:256
-		buffer_load_dword v2, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save	slc:1 glc:1	offset:256*2
-		buffer_load_dword v3, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save	slc:1 glc:1	offset:256*3
-	end
-
-end
-	
-    /*      	restore SGPRs	    */
-	//////////////////////////////
-
-    // SGPR SR memory offset : size(VGPR)	
-    get_vgpr_size_bytes(s_restore_mem_offset)
-    get_sgpr_size_bytes(s_restore_tmp)
-    s_add_u32 s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp
-    s_sub_u32 s_restore_mem_offset, s_restore_mem_offset, 16*4     // restore SGPR from S[n] to S[0], by 16 sgprs group
-    // TODO, change RSRC word to rearrange memory layout for SGPRS
-
-	s_getreg_b32 	s_restore_alloc_size, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SIZE) 				//spgr_size
-	s_add_u32 		s_restore_alloc_size, s_restore_alloc_size, 1
-	s_lshl_b32 		s_restore_alloc_size, s_restore_alloc_size, 4 							//Number of SGPRs = (sgpr_size + 1) * 16   (non-zero value)
-
-	if (SGPR_SAVE_USE_SQC)
-		s_lshl_b32		s_restore_buf_rsrc2,	s_restore_alloc_size, 2						//NUM_RECORDS in bytes 
-	else
-		s_lshl_b32		s_restore_buf_rsrc2,	s_restore_alloc_size, 8						//NUM_RECORDS in bytes (64 threads)
-	end
-	if (SWIZZLE_EN)
-		s_add_u32		s_restore_buf_rsrc2, s_restore_buf_rsrc2, 0x0						//FIXME need to use swizzle to enable bounds checking?
-	else
-		s_mov_b32		s_restore_buf_rsrc2,  0x1000000										//NUM_RECORDS in bytes
-	end
-
-    /* If 112 SGPRs ar allocated, 4 sgprs are not used TBA(108,109),TMA(110,111),
-       However, we are safe to restore these 4 SGPRs anyway, since TBA,TMA will later be restored by HWREG
-    */
-    s_mov_b32 m0, s_restore_alloc_size
-
- L_RESTORE_SGPR_LOOP: 
-	read_16sgpr_from_mem(s0, s_restore_buf_rsrc0, s_restore_mem_offset)  //PV: further performance improvement can be made
-	s_waitcnt		lgkmcnt(0)																//ensure data ready
-
-    s_sub_u32 m0, m0, 16    // Restore from S[n] to S[0]
-
-	s_movreld_b64 	s0, s0 		//s[0+m0] = s0
-    s_movreld_b64 	s2, s2
-    s_movreld_b64 	s4, s4
-    s_movreld_b64 	s6, s6
-    s_movreld_b64 	s8, s8
-    s_movreld_b64 	s10, s10
-    s_movreld_b64 	s12, s12
-    s_movreld_b64 	s14, s14
-
-	s_cmp_eq_u32 	m0, 0				//scc = (m0 < s_restore_alloc_size) ? 1 : 0
-	s_cbranch_scc0 	L_RESTORE_SGPR_LOOP             //SGPR restore (except s0) is complete?
-	
-    /* 		restore HW registers	*/
-	//////////////////////////////
-  L_RESTORE_HWREG:
-
-
-if G8SR_DEBUG_TIMESTAMP
-      s_mov_b32 s_g8sr_ts_restore_s[0], s_restore_pc_lo
-      s_mov_b32 s_g8sr_ts_restore_s[1], s_restore_pc_hi
-end
-
-    // HWREG SR memory offset : size(VGPR)+size(SGPR)
-    get_vgpr_size_bytes(s_restore_mem_offset)
-    get_sgpr_size_bytes(s_restore_tmp)
-    s_add_u32 s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp
-
-
-    s_mov_b32		s_restore_buf_rsrc2, 0x4												//NUM_RECORDS	in bytes
-	if (SWIZZLE_EN)
-		s_add_u32		s_restore_buf_rsrc2, s_restore_buf_rsrc2, 0x0						//FIXME need to use swizzle to enable bounds checking?
-	else
-		s_mov_b32		s_restore_buf_rsrc2,  0x1000000										//NUM_RECORDS in bytes
-	end
-
-	read_hwreg_from_mem(s_restore_m0, s_restore_buf_rsrc0, s_restore_mem_offset)					//M0
-	read_hwreg_from_mem(s_restore_pc_lo, s_restore_buf_rsrc0, s_restore_mem_offset)				//PC
-	read_hwreg_from_mem(s_restore_pc_hi, s_restore_buf_rsrc0, s_restore_mem_offset)
-	read_hwreg_from_mem(s_restore_exec_lo, s_restore_buf_rsrc0, s_restore_mem_offset)				//EXEC
-	read_hwreg_from_mem(s_restore_exec_hi, s_restore_buf_rsrc0, s_restore_mem_offset)
-	read_hwreg_from_mem(s_restore_status, s_restore_buf_rsrc0, s_restore_mem_offset)				//STATUS
-	read_hwreg_from_mem(s_restore_trapsts, s_restore_buf_rsrc0, s_restore_mem_offset)				//TRAPSTS
-    read_hwreg_from_mem(xnack_mask_lo, s_restore_buf_rsrc0, s_restore_mem_offset)					//XNACK_MASK_LO
-	read_hwreg_from_mem(xnack_mask_hi, s_restore_buf_rsrc0, s_restore_mem_offset)					//XNACK_MASK_HI
-	read_hwreg_from_mem(s_restore_mode, s_restore_buf_rsrc0, s_restore_mem_offset)				//MODE
-	read_hwreg_from_mem(tba_lo, s_restore_buf_rsrc0, s_restore_mem_offset)						//TBA_LO
-	read_hwreg_from_mem(tba_hi, s_restore_buf_rsrc0, s_restore_mem_offset)						//TBA_HI
-	
-	s_waitcnt		lgkmcnt(0)																						//from now on, it is safe to restore STATUS and IB_STS
-
-	s_and_b32 s_restore_pc_hi, s_restore_pc_hi, 0x0000ffff    	//pc[47:32]        //Do it here in order not to affect STATUS
-
-	//for normal save & restore, the saved PC points to the next inst to execute, no adjustment needs to be made, otherwise:
-	if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_RESTORE_NORMAL))
-		s_add_u32 s_restore_pc_lo, s_restore_pc_lo, 8            //pc[31:0]+8	  //two back-to-back s_trap are used (first for save and second for restore)
-		s_addc_u32	s_restore_pc_hi, s_restore_pc_hi, 0x0		 //carry bit over
-	end	
-	if ((EMU_RUN_HACK) && (EMU_RUN_HACK_RESTORE_NORMAL))	      
-		s_add_u32 s_restore_pc_lo, s_restore_pc_lo, 4            //pc[31:0]+4     // save is hack through s_trap but restore is normal
-		s_addc_u32	s_restore_pc_hi, s_restore_pc_hi, 0x0		 //carry bit over
-	end
-	
-	s_mov_b32 		m0, 		s_restore_m0
-	s_mov_b32 		exec_lo, 	s_restore_exec_lo
-	s_mov_b32 		exec_hi, 	s_restore_exec_hi
-	
-	s_and_b32		s_restore_m0, SQ_WAVE_TRAPSTS_PRE_SAVECTX_MASK, s_restore_trapsts
-	s_setreg_b32	hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_PRE_SAVECTX_SHIFT, SQ_WAVE_TRAPSTS_PRE_SAVECTX_SIZE), s_restore_m0
-	s_and_b32		s_restore_m0, SQ_WAVE_TRAPSTS_POST_SAVECTX_MASK, s_restore_trapsts
-	s_lshr_b32		s_restore_m0, s_restore_m0, SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT
-	s_setreg_b32	hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT, SQ_WAVE_TRAPSTS_POST_SAVECTX_SIZE), s_restore_m0
-	//s_setreg_b32 	hwreg(HW_REG_TRAPSTS), 	s_restore_trapsts      //don't overwrite SAVECTX bit as it may be set through external SAVECTX during restore
-	s_setreg_b32 	hwreg(HW_REG_MODE), 	s_restore_mode
-	//reuse s_restore_m0 as a temp register
-	s_and_b32		s_restore_m0, s_restore_pc_hi, S_SAVE_PC_HI_RCNT_MASK
-	s_lshr_b32		s_restore_m0, s_restore_m0, S_SAVE_PC_HI_RCNT_SHIFT
-	s_lshl_b32		s_restore_m0, s_restore_m0, SQ_WAVE_IB_STS_RCNT_SHIFT
-	s_mov_b32		s_restore_tmp, 0x0																				//IB_STS is zero
-	s_or_b32		s_restore_tmp, s_restore_tmp, s_restore_m0
-	s_and_b32		s_restore_m0, s_restore_pc_hi, S_SAVE_PC_HI_FIRST_REPLAY_MASK
-	s_lshr_b32		s_restore_m0, s_restore_m0, S_SAVE_PC_HI_FIRST_REPLAY_SHIFT
-	s_lshl_b32		s_restore_m0, s_restore_m0, SQ_WAVE_IB_STS_FIRST_REPLAY_SHIFT
-	s_or_b32		s_restore_tmp, s_restore_tmp, s_restore_m0
-    s_and_b32       s_restore_m0, s_restore_status, SQ_WAVE_STATUS_INST_ATC_MASK 
-    s_lshr_b32		s_restore_m0, s_restore_m0, SQ_WAVE_STATUS_INST_ATC_SHIFT    
-    s_setreg_b32 	hwreg(HW_REG_IB_STS), 	s_restore_tmp
-
-	s_and_b64    exec, exec, exec  // Restore STATUS.EXECZ, not writable by s_setreg_b32
-	s_and_b64    vcc, vcc, vcc  // Restore STATUS.VCCZ, not writable by s_setreg_b32
-	s_setreg_b32 	hwreg(HW_REG_STATUS), 	s_restore_status     // SCC is included, which is changed by previous salu
-	
-	s_barrier													//barrier to ensure the readiness of LDS before access attemps from any other wave in the same TG //FIXME not performance-optimal at this time
-
-if G8SR_DEBUG_TIMESTAMP
-	s_memrealtime s_g8sr_ts_restore_d
-	s_waitcnt lgkmcnt(0)
-end	
-	
-//	s_rfe_b64 s_restore_pc_lo                              		//Return to the main shader program and resume execution
-    s_rfe_restore_b64  s_restore_pc_lo, s_restore_m0            // s_restore_m0[0] is used to set STATUS.inst_atc 
-
-
-/**************************************************************************/
-/*                     	the END								              */
-/**************************************************************************/	
-L_END_PGM:	
-	s_endpgm
-	
-end	
-
-
-/**************************************************************************/
-/*                     	the helper functions							  */
-/**************************************************************************/
-
-//Only for save hwreg to mem
-function write_hwreg_to_mem(s, s_rsrc, s_mem_offset)
-		s_mov_b32 exec_lo, m0					//assuming exec_lo is not needed anymore from this point on
-		s_mov_b32 m0, s_mem_offset
-		s_buffer_store_dword s, s_rsrc, m0		glc:1
-		s_add_u32		s_mem_offset, s_mem_offset, 4
-		s_mov_b32	m0, exec_lo
-end
-
-
-// HWREG are saved before SGPRs, so all HWREG could be use.
-function write_16sgpr_to_mem(s, s_rsrc, s_mem_offset)
-
-		s_buffer_store_dwordx4 s[0], s_rsrc, 0  glc:1
-		s_buffer_store_dwordx4 s[4], s_rsrc, 16  glc:1
-		s_buffer_store_dwordx4 s[8], s_rsrc, 32  glc:1
-		s_buffer_store_dwordx4 s[12], s_rsrc, 48 glc:1
-        s_add_u32       s_rsrc[0], s_rsrc[0], 4*16
-        s_addc_u32 		s_rsrc[1], s_rsrc[1], 0x0			  // +scc
-end
-
-
-function read_hwreg_from_mem(s, s_rsrc, s_mem_offset)
-	s_buffer_load_dword s, s_rsrc, s_mem_offset		glc:1
-	s_add_u32		s_mem_offset, s_mem_offset, 4
-end
-
-function read_16sgpr_from_mem(s, s_rsrc, s_mem_offset)
-	s_buffer_load_dwordx16 s, s_rsrc, s_mem_offset		glc:1
-	s_sub_u32		s_mem_offset, s_mem_offset, 4*16
-end
-
-
-
-function get_lds_size_bytes(s_lds_size_byte)
-    // SQ LDS granularity is 64DW, while PGM_RSRC2.lds_size is in granularity 128DW	 
-    s_getreg_b32   s_lds_size_byte, hwreg(HW_REG_LDS_ALLOC, SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT, SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE) 			// lds_size
-    s_lshl_b32     s_lds_size_byte, s_lds_size_byte, 8 						//LDS size in dwords = lds_size * 64 *4Bytes    // granularity 64DW
-end
-
-function get_vgpr_size_bytes(s_vgpr_size_byte)
-    s_getreg_b32   s_vgpr_size_byte, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE)  //vpgr_size
-    s_add_u32      s_vgpr_size_byte, s_vgpr_size_byte, 1
-    s_lshl_b32     s_vgpr_size_byte, s_vgpr_size_byte, (2+8) //Number of VGPRs = (vgpr_size + 1) * 4 * 64 * 4   (non-zero value)   //FIXME for GFX, zero is possible 
-end
-
-function get_sgpr_size_bytes(s_sgpr_size_byte)
-    s_getreg_b32   s_sgpr_size_byte, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SIZE)  //spgr_size
-    s_add_u32      s_sgpr_size_byte, s_sgpr_size_byte, 1
-    s_lshl_b32     s_sgpr_size_byte, s_sgpr_size_byte, 6 //Number of SGPRs = (sgpr_size + 1) * 16 *4   (non-zero value) 
-end
-
-function get_hwreg_size_bytes
-    return 128 //HWREG size 128 bytes
-end
-
-
-#endif
-
-static const uint32_t cwsr_trap_carrizo_hex[] = {
-	0xbf820001, 0xbf820123,
-	0xb8f4f802, 0x89748674,
-	0xb8f5f803, 0x8675ff75,
-	0x00000400, 0xbf850011,
-	0xc00a1e37, 0x00000000,
-	0xbf8c007f, 0x87777978,
-	0xbf840002, 0xb974f802,
-	0xbe801d78, 0xb8f5f803,
-	0x8675ff75, 0x000001ff,
-	0xbf850002, 0x80708470,
-	0x82718071, 0x8671ff71,
-	0x0000ffff, 0xb974f802,
-	0xbe801f70, 0xb8f5f803,
-	0x8675ff75, 0x00000100,
-	0xbf840006, 0xbefa0080,
-	0xb97a0203, 0x8671ff71,
-	0x0000ffff, 0x80f08870,
-	0x82f18071, 0xbefa0080,
-	0xb97a0283, 0xbef60068,
-	0xbef70069, 0xb8fa1c07,
-	0x8e7a9c7a, 0x87717a71,
-	0xb8fa03c7, 0x8e7a9b7a,
-	0x87717a71, 0xb8faf807,
-	0x867aff7a, 0x00007fff,
-	0xb97af807, 0xbef2007e,
-	0xbef3007f, 0xbefe0180,
-	0xbf900004, 0xbf8e0002,
-	0xbf88fffe, 0xbef8007e,
-	0x8679ff7f, 0x0000ffff,
-	0x8779ff79, 0x00040000,
-	0xbefa0080, 0xbefb00ff,
-	0x00807fac, 0x867aff7f,
-	0x08000000, 0x8f7a837a,
-	0x877b7a7b, 0x867aff7f,
-	0x70000000, 0x8f7a817a,
-	0x877b7a7b, 0xbeef007c,
-	0xbeee0080, 0xb8ee2a05,
-	0x806e816e, 0x8e6e8a6e,
-	0xb8fa1605, 0x807a817a,
-	0x8e7a867a, 0x806e7a6e,
-	0xbefa0084, 0xbefa00ff,
-	0x01000000, 0xbefe007c,
-	0xbefc006e, 0xc0611bfc,
-	0x0000007c, 0x806e846e,
-	0xbefc007e, 0xbefe007c,
-	0xbefc006e, 0xc0611c3c,
-	0x0000007c, 0x806e846e,
-	0xbefc007e, 0xbefe007c,
-	0xbefc006e, 0xc0611c7c,
-	0x0000007c, 0x806e846e,
-	0xbefc007e, 0xbefe007c,
-	0xbefc006e, 0xc0611cbc,
-	0x0000007c, 0x806e846e,
-	0xbefc007e, 0xbefe007c,
-	0xbefc006e, 0xc0611cfc,
-	0x0000007c, 0x806e846e,
-	0xbefc007e, 0xbefe007c,
-	0xbefc006e, 0xc0611d3c,
-	0x0000007c, 0x806e846e,
-	0xbefc007e, 0xb8f5f803,
-	0xbefe007c, 0xbefc006e,
-	0xc0611d7c, 0x0000007c,
-	0x806e846e, 0xbefc007e,
-	0xbefe007c, 0xbefc006e,
-	0xc0611dbc, 0x0000007c,
-	0x806e846e, 0xbefc007e,
-	0xbefe007c, 0xbefc006e,
-	0xc0611dfc, 0x0000007c,
-	0x806e846e, 0xbefc007e,
-	0xb8eff801, 0xbefe007c,
-	0xbefc006e, 0xc0611bfc,
-	0x0000007c, 0x806e846e,
-	0xbefc007e, 0xbefe007c,
-	0xbefc006e, 0xc0611b3c,
-	0x0000007c, 0x806e846e,
-	0xbefc007e, 0xbefe007c,
-	0xbefc006e, 0xc0611b7c,
-	0x0000007c, 0x806e846e,
-	0xbefc007e, 0x867aff7f,
-	0x04000000, 0xbef30080,
-	0x8773737a, 0xb8ee2a05,
-	0x806e816e, 0x8e6e8a6e,
-	0xb8f51605, 0x80758175,
-	0x8e758475, 0x8e7a8275,
-	0xbefa00ff, 0x01000000,
-	0xbef60178, 0x80786e78,
-	0x82798079, 0xbefc0080,
-	0xbe802b00, 0xbe822b02,
-	0xbe842b04, 0xbe862b06,
-	0xbe882b08, 0xbe8a2b0a,
-	0xbe8c2b0c, 0xbe8e2b0e,
-	0xc06b003c, 0x00000000,
-	0xc06b013c, 0x00000010,
-	0xc06b023c, 0x00000020,
-	0xc06b033c, 0x00000030,
-	0x8078c078, 0x82798079,
-	0x807c907c, 0xbf0a757c,
-	0xbf85ffeb, 0xbef80176,
-	0xbeee0080, 0xbefe00c1,
-	0xbeff00c1, 0xbefa00ff,
-	0x01000000, 0xe0724000,
-	0x6e1e0000, 0xe0724100,
-	0x6e1e0100, 0xe0724200,
-	0x6e1e0200, 0xe0724300,
-	0x6e1e0300, 0xbefe00c1,
-	0xbeff00c1, 0xb8f54306,
-	0x8675c175, 0xbf84002c,
-	0xbf8a0000, 0x867aff73,
-	0x04000000, 0xbf840028,
-	0x8e758675, 0x8e758275,
-	0xbefa0075, 0xb8ee2a05,
-	0x806e816e, 0x8e6e8a6e,
-	0xb8fa1605, 0x807a817a,
-	0x8e7a867a, 0x806e7a6e,
-	0x806eff6e, 0x00000080,
-	0xbefa00ff, 0x01000000,
-	0xbefc0080, 0xd28c0002,
-	0x000100c1, 0xd28d0003,
-	0x000204c1, 0xd1060002,
-	0x00011103, 0x7e0602ff,
-	0x00000200, 0xbefc00ff,
-	0x00010000, 0xbe80007b,
-	0x867bff7b, 0xff7fffff,
-	0x877bff7b, 0x00058000,
-	0xd8ec0000, 0x00000002,
-	0xbf8c007f, 0xe0765000,
-	0x6e1e0002, 0x32040702,
-	0xd0c9006a, 0x0000eb02,
-	0xbf87fff7, 0xbefb0000,
-	0xbeee00ff, 0x00000400,
-	0xbefe00c1, 0xbeff00c1,
-	0xb8f52a05, 0x80758175,
-	0x8e758275, 0x8e7a8875,
-	0xbefa00ff, 0x01000000,
-	0xbefc0084, 0xbf0a757c,
-	0xbf840015, 0xbf11017c,
-	0x8075ff75, 0x00001000,
-	0x7e000300, 0x7e020301,
-	0x7e040302, 0x7e060303,
-	0xe0724000, 0x6e1e0000,
-	0xe0724100, 0x6e1e0100,
-	0xe0724200, 0x6e1e0200,
-	0xe0724300, 0x6e1e0300,
-	0x807c847c, 0x806eff6e,
-	0x00000400, 0xbf0a757c,
-	0xbf85ffef, 0xbf9c0000,
-	0xbf8200ca, 0xbef8007e,
-	0x8679ff7f, 0x0000ffff,
-	0x8779ff79, 0x00040000,
-	0xbefa0080, 0xbefb00ff,
-	0x00807fac, 0x8676ff7f,
-	0x08000000, 0x8f768376,
-	0x877b767b, 0x8676ff7f,
-	0x70000000, 0x8f768176,
-	0x877b767b, 0x8676ff7f,
-	0x04000000, 0xbf84001e,
-	0xbefe00c1, 0xbeff00c1,
-	0xb8f34306, 0x8673c173,
-	0xbf840019, 0x8e738673,
-	0x8e738273, 0xbefa0073,
-	0xb8f22a05, 0x80728172,
-	0x8e728a72, 0xb8f61605,
-	0x80768176, 0x8e768676,
-	0x80727672, 0x8072ff72,
-	0x00000080, 0xbefa00ff,
-	0x01000000, 0xbefc0080,
-	0xe0510000, 0x721e0000,
-	0xe0510100, 0x721e0000,
-	0x807cff7c, 0x00000200,
-	0x8072ff72, 0x00000200,
-	0xbf0a737c, 0xbf85fff6,
-	0xbef20080, 0xbefe00c1,
-	0xbeff00c1, 0xb8f32a05,
-	0x80738173, 0x8e738273,
-	0x8e7a8873, 0xbefa00ff,
-	0x01000000, 0xbef60072,
-	0x8072ff72, 0x00000400,
-	0xbefc0084, 0xbf11087c,
-	0x8073ff73, 0x00008000,
-	0xe0524000, 0x721e0000,
-	0xe0524100, 0x721e0100,
-	0xe0524200, 0x721e0200,
-	0xe0524300, 0x721e0300,
-	0xbf8c0f70, 0x7e000300,
-	0x7e020301, 0x7e040302,
-	0x7e060303, 0x807c847c,
-	0x8072ff72, 0x00000400,
-	0xbf0a737c, 0xbf85ffee,
-	0xbf9c0000, 0xe0524000,
-	0x761e0000, 0xe0524100,
-	0x761e0100, 0xe0524200,
-	0x761e0200, 0xe0524300,
-	0x761e0300, 0xb8f22a05,
-	0x80728172, 0x8e728a72,
-	0xb8f61605, 0x80768176,
-	0x8e768676, 0x80727672,
-	0x80f2c072, 0xb8f31605,
-	0x80738173, 0x8e738473,
-	0x8e7a8273, 0xbefa00ff,
-	0x01000000, 0xbefc0073,
-	0xc031003c, 0x00000072,
-	0x80f2c072, 0xbf8c007f,
-	0x80fc907c, 0xbe802d00,
-	0xbe822d02, 0xbe842d04,
-	0xbe862d06, 0xbe882d08,
-	0xbe8a2d0a, 0xbe8c2d0c,
-	0xbe8e2d0e, 0xbf06807c,
-	0xbf84fff1, 0xb8f22a05,
-	0x80728172, 0x8e728a72,
-	0xb8f61605, 0x80768176,
-	0x8e768676, 0x80727672,
-	0xbefa0084, 0xbefa00ff,
-	0x01000000, 0xc0211cfc,
-	0x00000072, 0x80728472,
-	0xc0211c3c, 0x00000072,
-	0x80728472, 0xc0211c7c,
-	0x00000072, 0x80728472,
-	0xc0211bbc, 0x00000072,
-	0x80728472, 0xc0211bfc,
-	0x00000072, 0x80728472,
-	0xc0211d3c, 0x00000072,
-	0x80728472, 0xc0211d7c,
-	0x00000072, 0x80728472,
-	0xc0211a3c, 0x00000072,
-	0x80728472, 0xc0211a7c,
-	0x00000072, 0x80728472,
-	0xc0211dfc, 0x00000072,
-	0x80728472, 0xc0211b3c,
-	0x00000072, 0x80728472,
-	0xc0211b7c, 0x00000072,
-	0x80728472, 0xbf8c007f,
-	0x8671ff71, 0x0000ffff,
-	0xbefc0073, 0xbefe006e,
-	0xbeff006f, 0x867375ff,
-	0x000003ff, 0xb9734803,
-	0x867375ff, 0xfffff800,
-	0x8f738b73, 0xb973a2c3,
-	0xb977f801, 0x8673ff71,
-	0xf0000000, 0x8f739c73,
-	0x8e739073, 0xbef60080,
-	0x87767376, 0x8673ff71,
-	0x08000000, 0x8f739b73,
-	0x8e738f73, 0x87767376,
-	0x8673ff74, 0x00800000,
-	0x8f739773, 0xb976f807,
-	0x86fe7e7e, 0x86ea6a6a,
-	0xb974f802, 0xbf8a0000,
-	0x95807370, 0xbf810000,
-};
-
diff --git a/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx8.asm b/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx8.asm
new file mode 100644
index 0000000..751cc2e
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx8.asm
@@ -0,0 +1,1384 @@
+/*
+ * Copyright 2015-2017 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#if 0
+HW (VI) source code for CWSR trap handler
+#Version 18 + multiple trap handler
+
+// this performance-optimal version was originally from Seven Xu at SRDC
+
+// Revison #18   --...
+/* Rev History
+** #1. Branch from gc dv.   //gfxip/gfx8/main/src/test/suites/block/cs/sr/cs_trap_handler.sp3#1,#50, #51, #52-53(Skip, Already Fixed by PV), #54-56(merged),#57-58(mergerd, skiped-already fixed by PV)
+** #4. SR Memory Layout:
+**             1. VGPR-SGPR-HWREG-{LDS}
+**             2. tba_hi.bits.26 - reconfigured as the first wave in tg bits, for defer Save LDS for a threadgroup.. performance concern..
+** #5. Update: 1. Accurate g8sr_ts_save_d timestamp
+** #6. Update: 1. Fix s_barrier usage; 2. VGPR s/r using swizzle buffer?(NoNeed, already matched the swizzle pattern, more investigation)
+** #7. Update: 1. don't barrier if noLDS
+** #8. Branch: 1. Branch to ver#0, which is very similar to gc dv version
+**             2. Fix SQ issue by s_sleep 2
+** #9. Update: 1. Fix scc restore failed issue, restore wave_status at last
+**             2. optimize s_buffer save by burst 16sgprs...
+** #10. Update 1. Optimize restore sgpr by busrt 16 sgprs.
+** #11. Update 1. Add 2 more timestamp for debug version
+** #12. Update 1. Add VGPR SR using DWx4, some case improve and some case drop performance
+** #13. Integ  1. Always use MUBUF for PV trap shader...
+** #14. Update 1. s_buffer_store soft clause...
+** #15. Update 1. PERF - sclar write with glc:0/mtype0 to allow L2 combine. perf improvement a lot.
+** #16. Update 1. PRRF - UNROLL LDS_DMA got 2500cycle save in IP tree
+** #17. Update 1. FUNC - LDS_DMA has issues while ATC, replace with ds_read/buffer_store for save part[TODO restore part]
+**             2. PERF - Save LDS before save VGPR to cover LDS save long latency...
+** #18. Update 1. FUNC - Implicitly estore STATUS.VCCZ, which is not writable by s_setreg_b32
+**             2. FUNC - Handle non-CWSR traps
+*/
+
+var G8SR_WDMEM_HWREG_OFFSET = 0
+var G8SR_WDMEM_SGPR_OFFSET  = 128  // in bytes
+
+// Keep definition same as the app shader, These 2 time stamps are part of the app shader... Should before any Save and after restore.
+
+var G8SR_DEBUG_TIMESTAMP = 0
+var G8SR_DEBUG_TS_SAVE_D_OFFSET = 40*4  // ts_save_d timestamp offset relative to SGPR_SR_memory_offset
+var s_g8sr_ts_save_s    = s[34:35]   // save start
+var s_g8sr_ts_sq_save_msg  = s[36:37]   // The save shader send SAVEWAVE msg to spi
+var s_g8sr_ts_spi_wrexec   = s[38:39]   // the SPI write the sr address to SQ
+var s_g8sr_ts_save_d    = s[40:41]   // save end
+var s_g8sr_ts_restore_s = s[42:43]   // restore start
+var s_g8sr_ts_restore_d = s[44:45]   // restore end
+
+var G8SR_VGPR_SR_IN_DWX4 = 0
+var G8SR_SAVE_BUF_RSRC_WORD1_STRIDE_DWx4 = 0x00100000    // DWx4 stride is 4*4Bytes
+var G8SR_RESTORE_BUF_RSRC_WORD1_STRIDE_DWx4  = G8SR_SAVE_BUF_RSRC_WORD1_STRIDE_DWx4
+
+
+/*************************************************************************/
+/*                  control on how to run the shader                     */
+/*************************************************************************/
+//any hack that needs to be made to run this code in EMU (either becasue various EMU code are not ready or no compute save & restore in EMU run)
+var EMU_RUN_HACK                    =   0
+var EMU_RUN_HACK_RESTORE_NORMAL     =   0
+var EMU_RUN_HACK_SAVE_NORMAL_EXIT   =   0
+var EMU_RUN_HACK_SAVE_SINGLE_WAVE   =   0
+var EMU_RUN_HACK_SAVE_FIRST_TIME    =   0                   //for interrupted restore in which the first save is through EMU_RUN_HACK
+var EMU_RUN_HACK_SAVE_FIRST_TIME_TBA_LO =   0                   //for interrupted restore in which the first save is through EMU_RUN_HACK
+var EMU_RUN_HACK_SAVE_FIRST_TIME_TBA_HI =   0                   //for interrupted restore in which the first save is through EMU_RUN_HACK
+var SAVE_LDS                        =   1
+var WG_BASE_ADDR_LO                 =   0x9000a000
+var WG_BASE_ADDR_HI                 =   0x0
+var WAVE_SPACE                      =   0x5000              //memory size that each wave occupies in workgroup state mem
+var CTX_SAVE_CONTROL                =   0x0
+var CTX_RESTORE_CONTROL             =   CTX_SAVE_CONTROL
+var SIM_RUN_HACK                    =   0                   //any hack that needs to be made to run this code in SIM (either becasue various RTL code are not ready or no compute save & restore in RTL run)
+var SGPR_SAVE_USE_SQC               =   1                   //use SQC D$ to do the write
+var USE_MTBUF_INSTEAD_OF_MUBUF      =   0                   //becasue TC EMU curently asserts on 0 of // overload DFMT field to carry 4 more bits of stride for MUBUF opcodes
+var SWIZZLE_EN                      =   0                   //whether we use swizzled buffer addressing
+
+/**************************************************************************/
+/*                      variables                                         */
+/**************************************************************************/
+var SQ_WAVE_STATUS_INST_ATC_SHIFT  = 23
+var SQ_WAVE_STATUS_INST_ATC_MASK   = 0x00800000
+var SQ_WAVE_STATUS_SPI_PRIO_MASK   = 0x00000006
+
+var SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT    = 12
+var SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE     = 9
+var SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT   = 8
+var SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE    = 6
+var SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SHIFT   = 24
+var SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SIZE    = 3                     //FIXME  sq.blk still has 4 bits at this time while SQ programming guide has 3 bits
+
+var SQ_WAVE_TRAPSTS_SAVECTX_MASK    =   0x400
+var SQ_WAVE_TRAPSTS_EXCE_MASK       =   0x1FF                   // Exception mask
+var SQ_WAVE_TRAPSTS_SAVECTX_SHIFT   =   10
+var SQ_WAVE_TRAPSTS_MEM_VIOL_MASK   =   0x100
+var SQ_WAVE_TRAPSTS_MEM_VIOL_SHIFT  =   8
+var SQ_WAVE_TRAPSTS_PRE_SAVECTX_MASK    =   0x3FF
+var SQ_WAVE_TRAPSTS_PRE_SAVECTX_SHIFT   =   0x0
+var SQ_WAVE_TRAPSTS_PRE_SAVECTX_SIZE    =   10
+var SQ_WAVE_TRAPSTS_POST_SAVECTX_MASK   =   0xFFFFF800
+var SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT  =   11
+var SQ_WAVE_TRAPSTS_POST_SAVECTX_SIZE   =   21
+
+var SQ_WAVE_IB_STS_RCNT_SHIFT           =   16                  //FIXME
+var SQ_WAVE_IB_STS_RCNT_SIZE            =   4                   //FIXME
+var SQ_WAVE_IB_STS_FIRST_REPLAY_SHIFT   =   15                  //FIXME
+var SQ_WAVE_IB_STS_FIRST_REPLAY_SIZE    =   1                   //FIXME
+var SQ_WAVE_IB_STS_RCNT_FIRST_REPLAY_MASK_NEG   = 0x00007FFF    //FIXME
+
+var SQ_BUF_RSRC_WORD1_ATC_SHIFT     =   24
+var SQ_BUF_RSRC_WORD3_MTYPE_SHIFT   =   27
+
+
+/*      Save        */
+var S_SAVE_BUF_RSRC_WORD1_STRIDE        =   0x00040000          //stride is 4 bytes
+var S_SAVE_BUF_RSRC_WORD3_MISC          =   0x00807FAC          //SQ_SEL_X/Y/Z/W, BUF_NUM_FORMAT_FLOAT, (0 for MUBUF stride[17:14] when ADD_TID_ENABLE and BUF_DATA_FORMAT_32 for MTBUF), ADD_TID_ENABLE
+
+var S_SAVE_SPI_INIT_ATC_MASK            =   0x08000000          //bit[27]: ATC bit
+var S_SAVE_SPI_INIT_ATC_SHIFT           =   27
+var S_SAVE_SPI_INIT_MTYPE_MASK          =   0x70000000          //bit[30:28]: Mtype
+var S_SAVE_SPI_INIT_MTYPE_SHIFT         =   28
+var S_SAVE_SPI_INIT_FIRST_WAVE_MASK     =   0x04000000          //bit[26]: FirstWaveInTG
+var S_SAVE_SPI_INIT_FIRST_WAVE_SHIFT    =   26
+
+var S_SAVE_PC_HI_RCNT_SHIFT             =   28                  //FIXME  check with Brian to ensure all fields other than PC[47:0] can be used
+var S_SAVE_PC_HI_RCNT_MASK              =   0xF0000000          //FIXME
+var S_SAVE_PC_HI_FIRST_REPLAY_SHIFT     =   27                  //FIXME
+var S_SAVE_PC_HI_FIRST_REPLAY_MASK      =   0x08000000          //FIXME
+
+var s_save_spi_init_lo              =   exec_lo
+var s_save_spi_init_hi              =   exec_hi
+
+                                                //tba_lo and tba_hi need to be saved/restored
+var s_save_pc_lo            =   ttmp0           //{TTMP1, TTMP0} = {3��h0,pc_rewind[3:0], HT[0],trapID[7:0], PC[47:0]}
+var s_save_pc_hi            =   ttmp1
+var s_save_exec_lo          =   ttmp2
+var s_save_exec_hi          =   ttmp3
+var s_save_status           =   ttmp4
+var s_save_trapsts          =   ttmp5           //not really used until the end of the SAVE routine
+var s_save_xnack_mask_lo    =   ttmp6
+var s_save_xnack_mask_hi    =   ttmp7
+var s_save_buf_rsrc0        =   ttmp8
+var s_save_buf_rsrc1        =   ttmp9
+var s_save_buf_rsrc2        =   ttmp10
+var s_save_buf_rsrc3        =   ttmp11
+
+var s_save_mem_offset       =   tma_lo
+var s_save_alloc_size       =   s_save_trapsts          //conflict
+var s_save_tmp              =   s_save_buf_rsrc2        //shared with s_save_buf_rsrc2  (conflict: should not use mem access with s_save_tmp at the same time)
+var s_save_m0               =   tma_hi
+
+/*      Restore     */
+var S_RESTORE_BUF_RSRC_WORD1_STRIDE         =   S_SAVE_BUF_RSRC_WORD1_STRIDE
+var S_RESTORE_BUF_RSRC_WORD3_MISC           =   S_SAVE_BUF_RSRC_WORD3_MISC
+
+var S_RESTORE_SPI_INIT_ATC_MASK             =   0x08000000          //bit[27]: ATC bit
+var S_RESTORE_SPI_INIT_ATC_SHIFT            =   27
+var S_RESTORE_SPI_INIT_MTYPE_MASK           =   0x70000000          //bit[30:28]: Mtype
+var S_RESTORE_SPI_INIT_MTYPE_SHIFT          =   28
+var S_RESTORE_SPI_INIT_FIRST_WAVE_MASK      =   0x04000000          //bit[26]: FirstWaveInTG
+var S_RESTORE_SPI_INIT_FIRST_WAVE_SHIFT     =   26
+
+var S_RESTORE_PC_HI_RCNT_SHIFT              =   S_SAVE_PC_HI_RCNT_SHIFT
+var S_RESTORE_PC_HI_RCNT_MASK               =   S_SAVE_PC_HI_RCNT_MASK
+var S_RESTORE_PC_HI_FIRST_REPLAY_SHIFT      =   S_SAVE_PC_HI_FIRST_REPLAY_SHIFT
+var S_RESTORE_PC_HI_FIRST_REPLAY_MASK       =   S_SAVE_PC_HI_FIRST_REPLAY_MASK
+
+var s_restore_spi_init_lo                   =   exec_lo
+var s_restore_spi_init_hi                   =   exec_hi
+
+var s_restore_mem_offset        =   ttmp2
+var s_restore_alloc_size        =   ttmp3
+var s_restore_tmp               =   ttmp6               //tba_lo/hi need to be restored
+var s_restore_mem_offset_save   =   s_restore_tmp       //no conflict
+
+var s_restore_m0            =   s_restore_alloc_size    //no conflict
+
+var s_restore_mode          =   ttmp7
+
+var s_restore_pc_lo         =   ttmp0
+var s_restore_pc_hi         =   ttmp1
+var s_restore_exec_lo       =   tma_lo                  //no conflict
+var s_restore_exec_hi       =   tma_hi                  //no conflict
+var s_restore_status        =   ttmp4
+var s_restore_trapsts       =   ttmp5
+var s_restore_xnack_mask_lo =   xnack_mask_lo
+var s_restore_xnack_mask_hi =   xnack_mask_hi
+var s_restore_buf_rsrc0     =   ttmp8
+var s_restore_buf_rsrc1     =   ttmp9
+var s_restore_buf_rsrc2     =   ttmp10
+var s_restore_buf_rsrc3     =   ttmp11
+
+/**************************************************************************/
+/*                      trap handler entry points                         */
+/**************************************************************************/
+/* Shader Main*/
+
+shader main
+  asic(VI)
+  type(CS)
+
+
+    if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_RESTORE_NORMAL))                   //hack to use trap_id for determining save/restore
+        //FIXME VCCZ un-init assertion s_getreg_b32     s_save_status, hwreg(HW_REG_STATUS)         //save STATUS since we will change SCC
+        s_and_b32 s_save_tmp, s_save_pc_hi, 0xffff0000              //change SCC
+        s_cmp_eq_u32 s_save_tmp, 0x007e0000                         //Save: trap_id = 0x7e. Restore: trap_id = 0x7f.
+        s_cbranch_scc0 L_JUMP_TO_RESTORE                            //do not need to recover STATUS here  since we are going to RESTORE
+        //FIXME  s_setreg_b32   hwreg(HW_REG_STATUS),   s_save_status       //need to recover STATUS since we are going to SAVE
+        s_branch L_SKIP_RESTORE                                     //NOT restore, SAVE actually
+    else
+        s_branch L_SKIP_RESTORE                                     //NOT restore. might be a regular trap or save
+    end
+
+L_JUMP_TO_RESTORE:
+    s_branch L_RESTORE                                              //restore
+
+L_SKIP_RESTORE:
+
+    s_getreg_b32    s_save_status, hwreg(HW_REG_STATUS)                             //save STATUS since we will change SCC
+    s_andn2_b32     s_save_status, s_save_status, SQ_WAVE_STATUS_SPI_PRIO_MASK      //check whether this is for save
+    s_getreg_b32    s_save_trapsts, hwreg(HW_REG_TRAPSTS)
+    s_and_b32       s_save_trapsts, s_save_trapsts, SQ_WAVE_TRAPSTS_SAVECTX_MASK    //check whether this is for save
+    s_cbranch_scc1  L_SAVE                                      //this is the operation for save
+
+    // *********    Handle non-CWSR traps       *******************
+if (!EMU_RUN_HACK)
+    /* read tba and tma for next level trap handler, ttmp4 is used as s_save_status */
+    s_load_dwordx4  [ttmp8,ttmp9,ttmp10, ttmp11], [tma_lo,tma_hi], 0
+    s_waitcnt lgkmcnt(0)
+    s_or_b32        ttmp7, ttmp8, ttmp9
+    s_cbranch_scc0  L_NO_NEXT_TRAP //next level trap handler not been set
+    s_setreg_b32    hwreg(HW_REG_STATUS), s_save_status //restore HW status(SCC)
+    s_setpc_b64     [ttmp8,ttmp9] //jump to next level trap handler
+
+L_NO_NEXT_TRAP:
+    s_getreg_b32    s_save_trapsts, hwreg(HW_REG_TRAPSTS)
+    s_and_b32       s_save_trapsts, s_save_trapsts, SQ_WAVE_TRAPSTS_EXCE_MASK // Check whether it is an exception
+    s_cbranch_scc1  L_EXCP_CASE   // Exception, jump back to the shader program directly.
+    s_add_u32       ttmp0, ttmp0, 4   // S_TRAP case, add 4 to ttmp0
+    s_addc_u32  ttmp1, ttmp1, 0
+L_EXCP_CASE:
+    s_and_b32   ttmp1, ttmp1, 0xFFFF
+    s_setreg_b32    hwreg(HW_REG_STATUS), s_save_status //restore HW status(SCC)
+    s_rfe_b64       [ttmp0, ttmp1]
+end
+    // *********        End handling of non-CWSR traps   *******************
+
+/**************************************************************************/
+/*                      save routine                                      */
+/**************************************************************************/
+
+L_SAVE:
+
+if G8SR_DEBUG_TIMESTAMP
+        s_memrealtime   s_g8sr_ts_save_s
+        s_waitcnt lgkmcnt(0)         //FIXME, will cause xnack??
+end
+
+    //check whether there is mem_viol
+    s_getreg_b32    s_save_trapsts, hwreg(HW_REG_TRAPSTS)
+    s_and_b32   s_save_trapsts, s_save_trapsts, SQ_WAVE_TRAPSTS_MEM_VIOL_MASK
+    s_cbranch_scc0  L_NO_PC_REWIND
+
+    //if so, need rewind PC assuming GDS operation gets NACKed
+    s_mov_b32       s_save_tmp, 0                                                           //clear mem_viol bit
+    s_setreg_b32    hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_MEM_VIOL_SHIFT, 1), s_save_tmp    //clear mem_viol bit
+    s_and_b32       s_save_pc_hi, s_save_pc_hi, 0x0000ffff    //pc[47:32]
+    s_sub_u32       s_save_pc_lo, s_save_pc_lo, 8             //pc[31:0]-8
+    s_subb_u32      s_save_pc_hi, s_save_pc_hi, 0x0           // -scc
+
+L_NO_PC_REWIND:
+    s_mov_b32       s_save_tmp, 0                                                           //clear saveCtx bit
+    s_setreg_b32    hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_SAVECTX_SHIFT, 1), s_save_tmp     //clear saveCtx bit
+
+    s_mov_b32       s_save_xnack_mask_lo,   xnack_mask_lo                                   //save XNACK_MASK
+    s_mov_b32       s_save_xnack_mask_hi,   xnack_mask_hi    //save XNACK must before any memory operation
+    s_getreg_b32    s_save_tmp, hwreg(HW_REG_IB_STS, SQ_WAVE_IB_STS_RCNT_SHIFT, SQ_WAVE_IB_STS_RCNT_SIZE)                   //save RCNT
+    s_lshl_b32      s_save_tmp, s_save_tmp, S_SAVE_PC_HI_RCNT_SHIFT
+    s_or_b32        s_save_pc_hi, s_save_pc_hi, s_save_tmp
+    s_getreg_b32    s_save_tmp, hwreg(HW_REG_IB_STS, SQ_WAVE_IB_STS_FIRST_REPLAY_SHIFT, SQ_WAVE_IB_STS_FIRST_REPLAY_SIZE)   //save FIRST_REPLAY
+    s_lshl_b32      s_save_tmp, s_save_tmp, S_SAVE_PC_HI_FIRST_REPLAY_SHIFT
+    s_or_b32        s_save_pc_hi, s_save_pc_hi, s_save_tmp
+    s_getreg_b32    s_save_tmp, hwreg(HW_REG_IB_STS)                                        //clear RCNT and FIRST_REPLAY in IB_STS
+    s_and_b32       s_save_tmp, s_save_tmp, SQ_WAVE_IB_STS_RCNT_FIRST_REPLAY_MASK_NEG
+
+    s_setreg_b32    hwreg(HW_REG_IB_STS), s_save_tmp
+
+    /*      inform SPI the readiness and wait for SPI's go signal */
+    s_mov_b32       s_save_exec_lo, exec_lo                                                 //save EXEC and use EXEC for the go signal from SPI
+    s_mov_b32       s_save_exec_hi, exec_hi
+    s_mov_b64       exec,   0x0                                                             //clear EXEC to get ready to receive
+
+if G8SR_DEBUG_TIMESTAMP
+        s_memrealtime  s_g8sr_ts_sq_save_msg
+        s_waitcnt lgkmcnt(0)
+end
+
+    if (EMU_RUN_HACK)
+
+    else
+        s_sendmsg   sendmsg(MSG_SAVEWAVE)  //send SPI a message and wait for SPI's write to EXEC
+    end
+
+  L_SLEEP:
+    s_sleep 0x2                // sleep 1 (64clk) is not enough for 8 waves per SIMD, which will cause SQ hang, since the 7,8th wave could not get arbit to exec inst, while other waves are stuck into the sleep-loop and waiting for wrexec!=0
+
+    if (EMU_RUN_HACK)
+
+    else
+        s_cbranch_execz L_SLEEP
+    end
+
+if G8SR_DEBUG_TIMESTAMP
+        s_memrealtime  s_g8sr_ts_spi_wrexec
+        s_waitcnt lgkmcnt(0)
+end
+
+    /*      setup Resource Contants    */
+    if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_SAVE_SINGLE_WAVE))
+        //calculate wd_addr using absolute thread id
+        v_readlane_b32 s_save_tmp, v9, 0
+        s_lshr_b32 s_save_tmp, s_save_tmp, 6
+        s_mul_i32 s_save_tmp, s_save_tmp, WAVE_SPACE
+        s_add_i32 s_save_spi_init_lo, s_save_tmp, WG_BASE_ADDR_LO
+        s_mov_b32 s_save_spi_init_hi, WG_BASE_ADDR_HI
+        s_and_b32 s_save_spi_init_hi, s_save_spi_init_hi, CTX_SAVE_CONTROL
+    else
+    end
+    if ((EMU_RUN_HACK) && (EMU_RUN_HACK_SAVE_SINGLE_WAVE))
+        s_add_i32 s_save_spi_init_lo, s_save_tmp, WG_BASE_ADDR_LO
+        s_mov_b32 s_save_spi_init_hi, WG_BASE_ADDR_HI
+        s_and_b32 s_save_spi_init_hi, s_save_spi_init_hi, CTX_SAVE_CONTROL
+    else
+    end
+
+
+    s_mov_b32       s_save_buf_rsrc0,   s_save_spi_init_lo                                                      //base_addr_lo
+    s_and_b32       s_save_buf_rsrc1,   s_save_spi_init_hi, 0x0000FFFF                                          //base_addr_hi
+    s_or_b32        s_save_buf_rsrc1,   s_save_buf_rsrc1,  S_SAVE_BUF_RSRC_WORD1_STRIDE
+    s_mov_b32       s_save_buf_rsrc2,   0                                                                       //NUM_RECORDS initial value = 0 (in bytes) although not neccessarily inited
+    s_mov_b32       s_save_buf_rsrc3,   S_SAVE_BUF_RSRC_WORD3_MISC
+    s_and_b32       s_save_tmp,         s_save_spi_init_hi, S_SAVE_SPI_INIT_ATC_MASK
+    s_lshr_b32      s_save_tmp,         s_save_tmp, (S_SAVE_SPI_INIT_ATC_SHIFT-SQ_BUF_RSRC_WORD1_ATC_SHIFT)         //get ATC bit into position
+    s_or_b32        s_save_buf_rsrc3,   s_save_buf_rsrc3,  s_save_tmp                                           //or ATC
+    s_and_b32       s_save_tmp,         s_save_spi_init_hi, S_SAVE_SPI_INIT_MTYPE_MASK
+    s_lshr_b32      s_save_tmp,         s_save_tmp, (S_SAVE_SPI_INIT_MTYPE_SHIFT-SQ_BUF_RSRC_WORD3_MTYPE_SHIFT)     //get MTYPE bits into position
+    s_or_b32        s_save_buf_rsrc3,   s_save_buf_rsrc3,  s_save_tmp                                           //or MTYPE
+
+    //FIXME  right now s_save_m0/s_save_mem_offset use tma_lo/tma_hi  (might need to save them before using them?)
+    s_mov_b32       s_save_m0,          m0                                                                  //save M0
+
+    /*      global mem offset           */
+    s_mov_b32       s_save_mem_offset,  0x0                                                                     //mem offset initial value = 0
+
+
+
+
+    /*      save HW registers   */
+    //////////////////////////////
+
+  L_SAVE_HWREG:
+        // HWREG SR memory offset : size(VGPR)+size(SGPR)
+       get_vgpr_size_bytes(s_save_mem_offset)
+       get_sgpr_size_bytes(s_save_tmp)
+       s_add_u32 s_save_mem_offset, s_save_mem_offset, s_save_tmp
+
+
+    s_mov_b32       s_save_buf_rsrc2, 0x4                               //NUM_RECORDS   in bytes
+    if (SWIZZLE_EN)
+        s_add_u32       s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0                     //FIXME need to use swizzle to enable bounds checking?
+    else
+        s_mov_b32       s_save_buf_rsrc2,  0x1000000                                //NUM_RECORDS in bytes
+    end
+
+
+    write_hwreg_to_mem(s_save_m0, s_save_buf_rsrc0, s_save_mem_offset)                  //M0
+
+    if ((EMU_RUN_HACK) && (EMU_RUN_HACK_SAVE_FIRST_TIME))
+        s_add_u32 s_save_pc_lo, s_save_pc_lo, 4             //pc[31:0]+4
+        s_addc_u32 s_save_pc_hi, s_save_pc_hi, 0x0          //carry bit over
+        s_mov_b32   tba_lo, EMU_RUN_HACK_SAVE_FIRST_TIME_TBA_LO
+        s_mov_b32   tba_hi, EMU_RUN_HACK_SAVE_FIRST_TIME_TBA_HI
+    end
+
+    write_hwreg_to_mem(s_save_pc_lo, s_save_buf_rsrc0, s_save_mem_offset)                   //PC
+    write_hwreg_to_mem(s_save_pc_hi, s_save_buf_rsrc0, s_save_mem_offset)
+    write_hwreg_to_mem(s_save_exec_lo, s_save_buf_rsrc0, s_save_mem_offset)             //EXEC
+    write_hwreg_to_mem(s_save_exec_hi, s_save_buf_rsrc0, s_save_mem_offset)
+    write_hwreg_to_mem(s_save_status, s_save_buf_rsrc0, s_save_mem_offset)              //STATUS
+
+    //s_save_trapsts conflicts with s_save_alloc_size
+    s_getreg_b32    s_save_trapsts, hwreg(HW_REG_TRAPSTS)
+    write_hwreg_to_mem(s_save_trapsts, s_save_buf_rsrc0, s_save_mem_offset)             //TRAPSTS
+
+    write_hwreg_to_mem(s_save_xnack_mask_lo, s_save_buf_rsrc0, s_save_mem_offset)           //XNACK_MASK_LO
+    write_hwreg_to_mem(s_save_xnack_mask_hi, s_save_buf_rsrc0, s_save_mem_offset)           //XNACK_MASK_HI
+
+    //use s_save_tmp would introduce conflict here between s_save_tmp and s_save_buf_rsrc2
+    s_getreg_b32    s_save_m0, hwreg(HW_REG_MODE)                                                   //MODE
+    write_hwreg_to_mem(s_save_m0, s_save_buf_rsrc0, s_save_mem_offset)
+    write_hwreg_to_mem(tba_lo, s_save_buf_rsrc0, s_save_mem_offset)                     //TBA_LO
+    write_hwreg_to_mem(tba_hi, s_save_buf_rsrc0, s_save_mem_offset)                     //TBA_HI
+
+
+
+    /*      the first wave in the threadgroup    */
+        // save fist_wave bits in tba_hi unused bit.26
+    s_and_b32       s_save_tmp, s_save_spi_init_hi, S_SAVE_SPI_INIT_FIRST_WAVE_MASK     // extract fisrt wave bit
+    //s_or_b32        tba_hi, s_save_tmp, tba_hi                                        // save first wave bit to tba_hi.bits[26]
+    s_mov_b32        s_save_exec_hi, 0x0
+    s_or_b32         s_save_exec_hi, s_save_tmp, s_save_exec_hi                          // save first wave bit to s_save_exec_hi.bits[26]
+
+
+    /*          save SGPRs      */
+        // Save SGPR before LDS save, then the s0 to s4 can be used during LDS save...
+    //////////////////////////////
+
+    // SGPR SR memory offset : size(VGPR)
+    get_vgpr_size_bytes(s_save_mem_offset)
+    // TODO, change RSRC word to rearrange memory layout for SGPRS
+
+    s_getreg_b32    s_save_alloc_size, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SIZE)               //spgr_size
+    s_add_u32       s_save_alloc_size, s_save_alloc_size, 1
+    s_lshl_b32      s_save_alloc_size, s_save_alloc_size, 4                         //Number of SGPRs = (sgpr_size + 1) * 16   (non-zero value)
+
+    if (SGPR_SAVE_USE_SQC)
+        s_lshl_b32      s_save_buf_rsrc2,   s_save_alloc_size, 2                    //NUM_RECORDS in bytes
+    else
+        s_lshl_b32      s_save_buf_rsrc2,   s_save_alloc_size, 8                    //NUM_RECORDS in bytes (64 threads)
+    end
+
+    if (SWIZZLE_EN)
+        s_add_u32       s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0                     //FIXME need to use swizzle to enable bounds checking?
+    else
+        s_mov_b32       s_save_buf_rsrc2,  0x1000000                                //NUM_RECORDS in bytes
+    end
+
+
+    // backup s_save_buf_rsrc0,1 to s_save_pc_lo/hi, since write_16sgpr_to_mem function will change the rsrc0
+    //s_mov_b64 s_save_pc_lo, s_save_buf_rsrc0
+    s_mov_b64 s_save_xnack_mask_lo, s_save_buf_rsrc0
+    s_add_u32 s_save_buf_rsrc0, s_save_buf_rsrc0, s_save_mem_offset
+    s_addc_u32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0
+
+    s_mov_b32       m0, 0x0                         //SGPR initial index value =0
+  L_SAVE_SGPR_LOOP:
+    // SGPR is allocated in 16 SGPR granularity
+    s_movrels_b64   s0, s0     //s0 = s[0+m0], s1 = s[1+m0]
+    s_movrels_b64   s2, s2     //s2 = s[2+m0], s3 = s[3+m0]
+    s_movrels_b64   s4, s4     //s4 = s[4+m0], s5 = s[5+m0]
+    s_movrels_b64   s6, s6     //s6 = s[6+m0], s7 = s[7+m0]
+    s_movrels_b64   s8, s8     //s8 = s[8+m0], s9 = s[9+m0]
+    s_movrels_b64   s10, s10   //s10 = s[10+m0], s11 = s[11+m0]
+    s_movrels_b64   s12, s12   //s12 = s[12+m0], s13 = s[13+m0]
+    s_movrels_b64   s14, s14   //s14 = s[14+m0], s15 = s[15+m0]
+
+    write_16sgpr_to_mem(s0, s_save_buf_rsrc0, s_save_mem_offset) //PV: the best performance should be using s_buffer_store_dwordx4
+    s_add_u32       m0, m0, 16                                                      //next sgpr index
+    s_cmp_lt_u32    m0, s_save_alloc_size                                           //scc = (m0 < s_save_alloc_size) ? 1 : 0
+    s_cbranch_scc1  L_SAVE_SGPR_LOOP                                    //SGPR save is complete?
+    // restore s_save_buf_rsrc0,1
+    //s_mov_b64 s_save_buf_rsrc0, s_save_pc_lo
+    s_mov_b64 s_save_buf_rsrc0, s_save_xnack_mask_lo
+
+
+
+
+    /*          save first 4 VGPR, then LDS save could use   */
+        // each wave will alloc 4 vgprs at least...
+    /////////////////////////////////////////////////////////////////////////////////////
+
+    s_mov_b32       s_save_mem_offset, 0
+    s_mov_b32       exec_lo, 0xFFFFFFFF                                             //need every thread from now on
+    s_mov_b32       exec_hi, 0xFFFFFFFF
+
+    if (SWIZZLE_EN)
+        s_add_u32       s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0                     //FIXME need to use swizzle to enable bounds checking?
+    else
+        s_mov_b32       s_save_buf_rsrc2,  0x1000000                                //NUM_RECORDS in bytes
+    end
+
+
+    // VGPR Allocated in 4-GPR granularity
+
+if G8SR_VGPR_SR_IN_DWX4
+        // the const stride for DWx4 is 4*4 bytes
+        s_and_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0x0000FFFF   // reset const stride to 0
+        s_or_b32  s_save_buf_rsrc1, s_save_buf_rsrc1, G8SR_SAVE_BUF_RSRC_WORD1_STRIDE_DWx4  // const stride to 4*4 bytes
+
+        buffer_store_dwordx4 v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1
+
+        s_and_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0x0000FFFF   // reset const stride to 0
+        s_or_b32  s_save_buf_rsrc1, s_save_buf_rsrc1, S_SAVE_BUF_RSRC_WORD1_STRIDE  // reset const stride to 4 bytes
+else
+        buffer_store_dword v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1
+        buffer_store_dword v1, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256
+        buffer_store_dword v2, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256*2
+        buffer_store_dword v3, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256*3
+end
+
+
+
+    /*          save LDS        */
+    //////////////////////////////
+
+  L_SAVE_LDS:
+
+        // Change EXEC to all threads...
+    s_mov_b32       exec_lo, 0xFFFFFFFF   //need every thread from now on
+    s_mov_b32       exec_hi, 0xFFFFFFFF
+
+    s_getreg_b32    s_save_alloc_size, hwreg(HW_REG_LDS_ALLOC,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE)             //lds_size
+    s_and_b32       s_save_alloc_size, s_save_alloc_size, 0xFFFFFFFF                //lds_size is zero?
+    s_cbranch_scc0  L_SAVE_LDS_DONE                                                                            //no lds used? jump to L_SAVE_DONE
+
+    s_barrier               //LDS is used? wait for other waves in the same TG
+    //s_and_b32     s_save_tmp, tba_hi, S_SAVE_SPI_INIT_FIRST_WAVE_MASK                //exec is still used here
+    s_and_b32       s_save_tmp, s_save_exec_hi, S_SAVE_SPI_INIT_FIRST_WAVE_MASK                //exec is still used here
+    s_cbranch_scc0  L_SAVE_LDS_DONE
+
+        // first wave do LDS save;
+
+    s_lshl_b32      s_save_alloc_size, s_save_alloc_size, 6                         //LDS size in dwords = lds_size * 64dw
+    s_lshl_b32      s_save_alloc_size, s_save_alloc_size, 2                         //LDS size in bytes
+    s_mov_b32       s_save_buf_rsrc2,  s_save_alloc_size                            //NUM_RECORDS in bytes
+
+    // LDS at offset: size(VGPR)+SIZE(SGPR)+SIZE(HWREG)
+    //
+    get_vgpr_size_bytes(s_save_mem_offset)
+    get_sgpr_size_bytes(s_save_tmp)
+    s_add_u32  s_save_mem_offset, s_save_mem_offset, s_save_tmp
+    s_add_u32 s_save_mem_offset, s_save_mem_offset, get_hwreg_size_bytes()
+
+
+    if (SWIZZLE_EN)
+        s_add_u32       s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0       //FIXME need to use swizzle to enable bounds checking?
+    else
+        s_mov_b32       s_save_buf_rsrc2,  0x1000000                  //NUM_RECORDS in bytes
+    end
+
+    s_mov_b32       m0, 0x0                                               //lds_offset initial value = 0
+
+
+var LDS_DMA_ENABLE = 0
+var UNROLL = 0
+if UNROLL==0 && LDS_DMA_ENABLE==1
+        s_mov_b32  s3, 256*2
+        s_nop 0
+        s_nop 0
+        s_nop 0
+  L_SAVE_LDS_LOOP:
+        //TODO: looks the 2 buffer_store/load clause for s/r will hurt performance.???
+    if (SAVE_LDS)     //SPI always alloc LDS space in 128DW granularity
+            buffer_store_lds_dword s_save_buf_rsrc0, s_save_mem_offset lds:1            // first 64DW
+            buffer_store_lds_dword s_save_buf_rsrc0, s_save_mem_offset lds:1 offset:256 // second 64DW
+    end
+
+    s_add_u32       m0, m0, s3                                          //every buffer_store_lds does 256 bytes
+    s_add_u32       s_save_mem_offset, s_save_mem_offset, s3                            //mem offset increased by 256 bytes
+    s_cmp_lt_u32    m0, s_save_alloc_size                                               //scc=(m0 < s_save_alloc_size) ? 1 : 0
+    s_cbranch_scc1  L_SAVE_LDS_LOOP                                                     //LDS save is complete?
+
+elsif LDS_DMA_ENABLE==1 && UNROLL==1 // UNROOL  , has ichace miss
+      // store from higest LDS address to lowest
+      s_mov_b32  s3, 256*2
+      s_sub_u32  m0, s_save_alloc_size, s3
+      s_add_u32 s_save_mem_offset, s_save_mem_offset, m0
+      s_lshr_b32 s_save_alloc_size, s_save_alloc_size, 9   // how many 128 trunks...
+      s_sub_u32 s_save_alloc_size, 128, s_save_alloc_size   // store from higheset addr to lowest
+      s_mul_i32 s_save_alloc_size, s_save_alloc_size, 6*4   // PC offset increment,  each LDS save block cost 6*4 Bytes instruction
+      s_add_u32 s_save_alloc_size, s_save_alloc_size, 3*4   //2is the below 2 inst...//s_addc and s_setpc
+      s_nop 0
+      s_nop 0
+      s_nop 0   //pad 3 dw to let LDS_DMA align with 64Bytes
+      s_getpc_b64 s[0:1]                              // reuse s[0:1], since s[0:1] already saved
+      s_add_u32   s0, s0,s_save_alloc_size
+      s_addc_u32  s1, s1, 0
+      s_setpc_b64 s[0:1]
+
+
+       for var i =0; i< 128; i++
+            // be careful to make here a 64Byte aligned address, which could improve performance...
+            buffer_store_lds_dword s_save_buf_rsrc0, s_save_mem_offset lds:1 offset:0           // first 64DW
+            buffer_store_lds_dword s_save_buf_rsrc0, s_save_mem_offset lds:1 offset:256           // second 64DW
+
+        if i!=127
+        s_sub_u32  m0, m0, s3      // use a sgpr to shrink 2DW-inst to 1DW inst to improve performance , i.e.  pack more LDS_DMA inst to one Cacheline
+            s_sub_u32  s_save_mem_offset, s_save_mem_offset,  s3
+            end
+       end
+
+else   // BUFFER_STORE
+      v_mbcnt_lo_u32_b32 v2, 0xffffffff, 0x0
+      v_mbcnt_hi_u32_b32 v3, 0xffffffff, v2     // tid
+      v_mul_i32_i24 v2, v3, 8   // tid*8
+      v_mov_b32 v3, 256*2
+      s_mov_b32 m0, 0x10000
+      s_mov_b32 s0, s_save_buf_rsrc3
+      s_and_b32 s_save_buf_rsrc3, s_save_buf_rsrc3, 0xFF7FFFFF    // disable add_tid
+      s_or_b32 s_save_buf_rsrc3, s_save_buf_rsrc3, 0x58000   //DFMT
+
+L_SAVE_LDS_LOOP_VECTOR:
+      ds_read_b64 v[0:1], v2    //x =LDS[a], byte address
+      s_waitcnt lgkmcnt(0)
+      buffer_store_dwordx2  v[0:1], v2, s_save_buf_rsrc0, s_save_mem_offset offen:1  glc:1  slc:1
+//      s_waitcnt vmcnt(0)
+      v_add_u32 v2, vcc[0:1], v2, v3
+      v_cmp_lt_u32 vcc[0:1], v2, s_save_alloc_size
+      s_cbranch_vccnz L_SAVE_LDS_LOOP_VECTOR
+
+      // restore rsrc3
+      s_mov_b32 s_save_buf_rsrc3, s0
+
+end
+
+L_SAVE_LDS_DONE:
+
+
+    /*          save VGPRs  - set the Rest VGPRs        */
+    //////////////////////////////////////////////////////////////////////////////////////
+  L_SAVE_VGPR:
+    // VGPR SR memory offset: 0
+    // TODO rearrange the RSRC words to use swizzle for VGPR save...
+
+    s_mov_b32       s_save_mem_offset, (0+256*4)                                    // for the rest VGPRs
+    s_mov_b32       exec_lo, 0xFFFFFFFF                                             //need every thread from now on
+    s_mov_b32       exec_hi, 0xFFFFFFFF
+
+    s_getreg_b32    s_save_alloc_size, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE)                   //vpgr_size
+    s_add_u32       s_save_alloc_size, s_save_alloc_size, 1
+    s_lshl_b32      s_save_alloc_size, s_save_alloc_size, 2                         //Number of VGPRs = (vgpr_size + 1) * 4    (non-zero value)   //FIXME for GFX, zero is possible
+    s_lshl_b32      s_save_buf_rsrc2,  s_save_alloc_size, 8                         //NUM_RECORDS in bytes (64 threads*4)
+    if (SWIZZLE_EN)
+        s_add_u32       s_save_buf_rsrc2, s_save_buf_rsrc2, 0x0                     //FIXME need to use swizzle to enable bounds checking?
+    else
+        s_mov_b32       s_save_buf_rsrc2,  0x1000000                                //NUM_RECORDS in bytes
+    end
+
+
+    // VGPR Allocated in 4-GPR granularity
+
+if G8SR_VGPR_SR_IN_DWX4
+        // the const stride for DWx4 is 4*4 bytes
+        s_and_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0x0000FFFF   // reset const stride to 0
+        s_or_b32  s_save_buf_rsrc1, s_save_buf_rsrc1, G8SR_SAVE_BUF_RSRC_WORD1_STRIDE_DWx4  // const stride to 4*4 bytes
+
+        s_mov_b32         m0, 4     // skip first 4 VGPRs
+        s_cmp_lt_u32      m0, s_save_alloc_size
+        s_cbranch_scc0    L_SAVE_VGPR_LOOP_END      // no more vgprs
+
+        s_set_gpr_idx_on  m0, 0x1   // This will change M0
+        s_add_u32         s_save_alloc_size, s_save_alloc_size, 0x1000  // because above inst change m0
+L_SAVE_VGPR_LOOP:
+        v_mov_b32         v0, v0   // v0 = v[0+m0]
+        v_mov_b32         v1, v1
+        v_mov_b32         v2, v2
+        v_mov_b32         v3, v3
+
+
+        buffer_store_dwordx4 v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1
+        s_add_u32         m0, m0, 4
+        s_add_u32         s_save_mem_offset, s_save_mem_offset, 256*4
+        s_cmp_lt_u32      m0, s_save_alloc_size
+    s_cbranch_scc1  L_SAVE_VGPR_LOOP                                                //VGPR save is complete?
+    s_set_gpr_idx_off
+L_SAVE_VGPR_LOOP_END:
+
+        s_and_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0x0000FFFF   // reset const stride to 0
+        s_or_b32  s_save_buf_rsrc1, s_save_buf_rsrc1, S_SAVE_BUF_RSRC_WORD1_STRIDE  // reset const stride to 4 bytes
+else
+    // VGPR store using dw burst
+    s_mov_b32         m0, 0x4   //VGPR initial index value =0
+    s_cmp_lt_u32      m0, s_save_alloc_size
+    s_cbranch_scc0    L_SAVE_VGPR_END
+
+
+    s_set_gpr_idx_on    m0, 0x1 //M0[7:0] = M0[7:0] and M0[15:12] = 0x1
+    s_add_u32       s_save_alloc_size, s_save_alloc_size, 0x1000                    //add 0x1000 since we compare m0 against it later
+
+  L_SAVE_VGPR_LOOP:
+    v_mov_b32       v0, v0              //v0 = v[0+m0]
+    v_mov_b32       v1, v1              //v0 = v[0+m0]
+    v_mov_b32       v2, v2              //v0 = v[0+m0]
+    v_mov_b32       v3, v3              //v0 = v[0+m0]
+
+    if(USE_MTBUF_INSTEAD_OF_MUBUF)
+        tbuffer_store_format_x v0, v0, s_save_buf_rsrc0, s_save_mem_offset format:BUF_NUM_FORMAT_FLOAT format: BUF_DATA_FORMAT_32 slc:1 glc:1
+    else
+        buffer_store_dword v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1
+        buffer_store_dword v1, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256
+        buffer_store_dword v2, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256*2
+        buffer_store_dword v3, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256*3
+    end
+
+    s_add_u32       m0, m0, 4                                                       //next vgpr index
+    s_add_u32       s_save_mem_offset, s_save_mem_offset, 256*4                     //every buffer_store_dword does 256 bytes
+    s_cmp_lt_u32    m0, s_save_alloc_size                                           //scc = (m0 < s_save_alloc_size) ? 1 : 0
+    s_cbranch_scc1  L_SAVE_VGPR_LOOP                                                //VGPR save is complete?
+    s_set_gpr_idx_off
+end
+
+L_SAVE_VGPR_END:
+
+
+
+
+
+
+    /*     S_PGM_END_SAVED  */                              //FIXME  graphics ONLY
+    if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_SAVE_NORMAL_EXIT))
+        s_and_b32 s_save_pc_hi, s_save_pc_hi, 0x0000ffff    //pc[47:32]
+        s_add_u32 s_save_pc_lo, s_save_pc_lo, 4             //pc[31:0]+4
+        s_addc_u32 s_save_pc_hi, s_save_pc_hi, 0x0          //carry bit over
+        s_rfe_b64 s_save_pc_lo                              //Return to the main shader program
+    else
+    end
+
+// Save Done timestamp
+if G8SR_DEBUG_TIMESTAMP
+        s_memrealtime   s_g8sr_ts_save_d
+        // SGPR SR memory offset : size(VGPR)
+        get_vgpr_size_bytes(s_save_mem_offset)
+        s_add_u32 s_save_mem_offset, s_save_mem_offset, G8SR_DEBUG_TS_SAVE_D_OFFSET
+        s_waitcnt lgkmcnt(0)         //FIXME, will cause xnack??
+        // Need reset rsrc2??
+        s_mov_b32 m0, s_save_mem_offset
+        s_mov_b32 s_save_buf_rsrc2,  0x1000000                                  //NUM_RECORDS in bytes
+        s_buffer_store_dwordx2 s_g8sr_ts_save_d, s_save_buf_rsrc0, m0       glc:1
+end
+
+
+    s_branch    L_END_PGM
+
+
+
+/**************************************************************************/
+/*                      restore routine                                   */
+/**************************************************************************/
+
+L_RESTORE:
+    /*      Setup Resource Contants    */
+    if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_RESTORE_NORMAL))
+        //calculate wd_addr using absolute thread id
+        v_readlane_b32 s_restore_tmp, v9, 0
+        s_lshr_b32 s_restore_tmp, s_restore_tmp, 6
+        s_mul_i32 s_restore_tmp, s_restore_tmp, WAVE_SPACE
+        s_add_i32 s_restore_spi_init_lo, s_restore_tmp, WG_BASE_ADDR_LO
+        s_mov_b32 s_restore_spi_init_hi, WG_BASE_ADDR_HI
+        s_and_b32 s_restore_spi_init_hi, s_restore_spi_init_hi, CTX_RESTORE_CONTROL
+    else
+    end
+
+if G8SR_DEBUG_TIMESTAMP
+        s_memrealtime   s_g8sr_ts_restore_s
+        s_waitcnt lgkmcnt(0)         //FIXME, will cause xnack??
+        // tma_lo/hi are sgpr 110, 111, which will not used for 112 SGPR allocated case...
+        s_mov_b32 s_restore_pc_lo, s_g8sr_ts_restore_s[0]
+        s_mov_b32 s_restore_pc_hi, s_g8sr_ts_restore_s[1]   //backup ts to ttmp0/1, sicne exec will be finally restored..
+end
+
+
+
+    s_mov_b32       s_restore_buf_rsrc0,    s_restore_spi_init_lo                                                           //base_addr_lo
+    s_and_b32       s_restore_buf_rsrc1,    s_restore_spi_init_hi, 0x0000FFFF                                               //base_addr_hi
+    s_or_b32        s_restore_buf_rsrc1,    s_restore_buf_rsrc1,  S_RESTORE_BUF_RSRC_WORD1_STRIDE
+    s_mov_b32       s_restore_buf_rsrc2,    0                                                                               //NUM_RECORDS initial value = 0 (in bytes)
+    s_mov_b32       s_restore_buf_rsrc3,    S_RESTORE_BUF_RSRC_WORD3_MISC
+    s_and_b32       s_restore_tmp,          s_restore_spi_init_hi, S_RESTORE_SPI_INIT_ATC_MASK
+    s_lshr_b32      s_restore_tmp,          s_restore_tmp, (S_RESTORE_SPI_INIT_ATC_SHIFT-SQ_BUF_RSRC_WORD1_ATC_SHIFT)       //get ATC bit into position
+    s_or_b32        s_restore_buf_rsrc3,    s_restore_buf_rsrc3,  s_restore_tmp                                             //or ATC
+    s_and_b32       s_restore_tmp,          s_restore_spi_init_hi, S_RESTORE_SPI_INIT_MTYPE_MASK
+    s_lshr_b32      s_restore_tmp,          s_restore_tmp, (S_RESTORE_SPI_INIT_MTYPE_SHIFT-SQ_BUF_RSRC_WORD3_MTYPE_SHIFT)   //get MTYPE bits into position
+    s_or_b32        s_restore_buf_rsrc3,    s_restore_buf_rsrc3,  s_restore_tmp                                             //or MTYPE
+
+    /*      global mem offset           */
+//  s_mov_b32       s_restore_mem_offset, 0x0                               //mem offset initial value = 0
+
+    /*      the first wave in the threadgroup    */
+    s_and_b32       s_restore_tmp, s_restore_spi_init_hi, S_RESTORE_SPI_INIT_FIRST_WAVE_MASK
+    s_cbranch_scc0  L_RESTORE_VGPR
+
+    /*          restore LDS     */
+    //////////////////////////////
+  L_RESTORE_LDS:
+
+    s_mov_b32       exec_lo, 0xFFFFFFFF                                                     //need every thread from now on   //be consistent with SAVE although can be moved ahead
+    s_mov_b32       exec_hi, 0xFFFFFFFF
+
+    s_getreg_b32    s_restore_alloc_size, hwreg(HW_REG_LDS_ALLOC,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT,SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE)              //lds_size
+    s_and_b32       s_restore_alloc_size, s_restore_alloc_size, 0xFFFFFFFF                  //lds_size is zero?
+    s_cbranch_scc0  L_RESTORE_VGPR                                                          //no lds used? jump to L_RESTORE_VGPR
+    s_lshl_b32      s_restore_alloc_size, s_restore_alloc_size, 6                           //LDS size in dwords = lds_size * 64dw
+    s_lshl_b32      s_restore_alloc_size, s_restore_alloc_size, 2                           //LDS size in bytes
+    s_mov_b32       s_restore_buf_rsrc2,    s_restore_alloc_size                            //NUM_RECORDS in bytes
+
+    // LDS at offset: size(VGPR)+SIZE(SGPR)+SIZE(HWREG)
+    //
+    get_vgpr_size_bytes(s_restore_mem_offset)
+    get_sgpr_size_bytes(s_restore_tmp)
+    s_add_u32  s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp
+    s_add_u32  s_restore_mem_offset, s_restore_mem_offset, get_hwreg_size_bytes()            //FIXME, Check if offset overflow???
+
+
+    if (SWIZZLE_EN)
+        s_add_u32       s_restore_buf_rsrc2, s_restore_buf_rsrc2, 0x0                       //FIXME need to use swizzle to enable bounds checking?
+    else
+        s_mov_b32       s_restore_buf_rsrc2,  0x1000000                                     //NUM_RECORDS in bytes
+    end
+    s_mov_b32       m0, 0x0                                                                 //lds_offset initial value = 0
+
+  L_RESTORE_LDS_LOOP:
+    if (SAVE_LDS)
+        buffer_load_dword   v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset lds:1                    // first 64DW
+        buffer_load_dword   v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset lds:1 offset:256         // second 64DW
+    end
+    s_add_u32       m0, m0, 256*2                                               // 128 DW
+    s_add_u32       s_restore_mem_offset, s_restore_mem_offset, 256*2           //mem offset increased by 128DW
+    s_cmp_lt_u32    m0, s_restore_alloc_size                                    //scc=(m0 < s_restore_alloc_size) ? 1 : 0
+    s_cbranch_scc1  L_RESTORE_LDS_LOOP                                                      //LDS restore is complete?
+
+
+    /*          restore VGPRs       */
+    //////////////////////////////
+  L_RESTORE_VGPR:
+        // VGPR SR memory offset : 0
+    s_mov_b32       s_restore_mem_offset, 0x0
+    s_mov_b32       exec_lo, 0xFFFFFFFF                                                     //need every thread from now on   //be consistent with SAVE although can be moved ahead
+    s_mov_b32       exec_hi, 0xFFFFFFFF
+
+    s_getreg_b32    s_restore_alloc_size, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE)    //vpgr_size
+    s_add_u32       s_restore_alloc_size, s_restore_alloc_size, 1
+    s_lshl_b32      s_restore_alloc_size, s_restore_alloc_size, 2                           //Number of VGPRs = (vgpr_size + 1) * 4    (non-zero value)
+    s_lshl_b32      s_restore_buf_rsrc2,  s_restore_alloc_size, 8                           //NUM_RECORDS in bytes (64 threads*4)
+    if (SWIZZLE_EN)
+        s_add_u32       s_restore_buf_rsrc2, s_restore_buf_rsrc2, 0x0                       //FIXME need to use swizzle to enable bounds checking?
+    else
+        s_mov_b32       s_restore_buf_rsrc2,  0x1000000                                     //NUM_RECORDS in bytes
+    end
+
+if G8SR_VGPR_SR_IN_DWX4
+     get_vgpr_size_bytes(s_restore_mem_offset)
+     s_sub_u32         s_restore_mem_offset, s_restore_mem_offset, 256*4
+
+     // the const stride for DWx4 is 4*4 bytes
+     s_and_b32 s_restore_buf_rsrc1, s_restore_buf_rsrc1, 0x0000FFFF   // reset const stride to 0
+     s_or_b32  s_restore_buf_rsrc1, s_restore_buf_rsrc1, G8SR_RESTORE_BUF_RSRC_WORD1_STRIDE_DWx4  // const stride to 4*4 bytes
+
+     s_mov_b32         m0, s_restore_alloc_size
+     s_set_gpr_idx_on  m0, 0x8    // Note.. This will change m0
+
+L_RESTORE_VGPR_LOOP:
+     buffer_load_dwordx4 v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1
+     s_waitcnt vmcnt(0)
+     s_sub_u32         m0, m0, 4
+     v_mov_b32         v0, v0   // v[0+m0] = v0
+     v_mov_b32         v1, v1
+     v_mov_b32         v2, v2
+     v_mov_b32         v3, v3
+     s_sub_u32         s_restore_mem_offset, s_restore_mem_offset, 256*4
+     s_cmp_eq_u32      m0, 0x8000
+     s_cbranch_scc0    L_RESTORE_VGPR_LOOP
+     s_set_gpr_idx_off
+
+     s_and_b32 s_restore_buf_rsrc1, s_restore_buf_rsrc1, 0x0000FFFF   // reset const stride to 0
+     s_or_b32  s_restore_buf_rsrc1, s_restore_buf_rsrc1, S_RESTORE_BUF_RSRC_WORD1_STRIDE  // const stride to 4*4 bytes
+
+else
+    // VGPR load using dw burst
+    s_mov_b32       s_restore_mem_offset_save, s_restore_mem_offset     // restore start with v1, v0 will be the last
+    s_add_u32       s_restore_mem_offset, s_restore_mem_offset, 256*4
+    s_mov_b32       m0, 4                               //VGPR initial index value = 1
+    s_set_gpr_idx_on  m0, 0x8                       //M0[7:0] = M0[7:0] and M0[15:12] = 0x8
+    s_add_u32       s_restore_alloc_size, s_restore_alloc_size, 0x8000                      //add 0x8000 since we compare m0 against it later
+
+  L_RESTORE_VGPR_LOOP:
+    if(USE_MTBUF_INSTEAD_OF_MUBUF)
+        tbuffer_load_format_x v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset format:BUF_NUM_FORMAT_FLOAT format: BUF_DATA_FORMAT_32 slc:1 glc:1
+    else
+        buffer_load_dword v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1
+        buffer_load_dword v1, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1 offset:256
+        buffer_load_dword v2, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1 offset:256*2
+        buffer_load_dword v3, v0, s_restore_buf_rsrc0, s_restore_mem_offset slc:1 glc:1 offset:256*3
+    end
+    s_waitcnt       vmcnt(0)                                                                //ensure data ready
+    v_mov_b32       v0, v0                                                                  //v[0+m0] = v0
+    v_mov_b32       v1, v1
+    v_mov_b32       v2, v2
+    v_mov_b32       v3, v3
+    s_add_u32       m0, m0, 4                                                               //next vgpr index
+    s_add_u32       s_restore_mem_offset, s_restore_mem_offset, 256*4                           //every buffer_load_dword does 256 bytes
+    s_cmp_lt_u32    m0, s_restore_alloc_size                                                //scc = (m0 < s_restore_alloc_size) ? 1 : 0
+    s_cbranch_scc1  L_RESTORE_VGPR_LOOP                                                     //VGPR restore (except v0) is complete?
+    s_set_gpr_idx_off
+                                                                                            /* VGPR restore on v0 */
+    if(USE_MTBUF_INSTEAD_OF_MUBUF)
+        tbuffer_load_format_x v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save format:BUF_NUM_FORMAT_FLOAT format: BUF_DATA_FORMAT_32 slc:1 glc:1
+    else
+        buffer_load_dword v0, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save    slc:1 glc:1
+        buffer_load_dword v1, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save    slc:1 glc:1 offset:256
+        buffer_load_dword v2, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save    slc:1 glc:1 offset:256*2
+        buffer_load_dword v3, v0, s_restore_buf_rsrc0, s_restore_mem_offset_save    slc:1 glc:1 offset:256*3
+    end
+
+end
+
+    /*          restore SGPRs       */
+    //////////////////////////////
+
+    // SGPR SR memory offset : size(VGPR)
+    get_vgpr_size_bytes(s_restore_mem_offset)
+    get_sgpr_size_bytes(s_restore_tmp)
+    s_add_u32 s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp
+    s_sub_u32 s_restore_mem_offset, s_restore_mem_offset, 16*4     // restore SGPR from S[n] to S[0], by 16 sgprs group
+    // TODO, change RSRC word to rearrange memory layout for SGPRS
+
+    s_getreg_b32    s_restore_alloc_size, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SIZE)                //spgr_size
+    s_add_u32       s_restore_alloc_size, s_restore_alloc_size, 1
+    s_lshl_b32      s_restore_alloc_size, s_restore_alloc_size, 4                           //Number of SGPRs = (sgpr_size + 1) * 16   (non-zero value)
+
+    if (SGPR_SAVE_USE_SQC)
+        s_lshl_b32      s_restore_buf_rsrc2,    s_restore_alloc_size, 2                     //NUM_RECORDS in bytes
+    else
+        s_lshl_b32      s_restore_buf_rsrc2,    s_restore_alloc_size, 8                     //NUM_RECORDS in bytes (64 threads)
+    end
+    if (SWIZZLE_EN)
+        s_add_u32       s_restore_buf_rsrc2, s_restore_buf_rsrc2, 0x0                       //FIXME need to use swizzle to enable bounds checking?
+    else
+        s_mov_b32       s_restore_buf_rsrc2,  0x1000000                                     //NUM_RECORDS in bytes
+    end
+
+    /* If 112 SGPRs ar allocated, 4 sgprs are not used TBA(108,109),TMA(110,111),
+       However, we are safe to restore these 4 SGPRs anyway, since TBA,TMA will later be restored by HWREG
+    */
+    s_mov_b32 m0, s_restore_alloc_size
+
+ L_RESTORE_SGPR_LOOP:
+    read_16sgpr_from_mem(s0, s_restore_buf_rsrc0, s_restore_mem_offset)  //PV: further performance improvement can be made
+    s_waitcnt       lgkmcnt(0)                                                              //ensure data ready
+
+    s_sub_u32 m0, m0, 16    // Restore from S[n] to S[0]
+
+    s_movreld_b64   s0, s0      //s[0+m0] = s0
+    s_movreld_b64   s2, s2
+    s_movreld_b64   s4, s4
+    s_movreld_b64   s6, s6
+    s_movreld_b64   s8, s8
+    s_movreld_b64   s10, s10
+    s_movreld_b64   s12, s12
+    s_movreld_b64   s14, s14
+
+    s_cmp_eq_u32    m0, 0               //scc = (m0 < s_restore_alloc_size) ? 1 : 0
+    s_cbranch_scc0  L_RESTORE_SGPR_LOOP             //SGPR restore (except s0) is complete?
+
+    /*      restore HW registers    */
+    //////////////////////////////
+  L_RESTORE_HWREG:
+
+
+if G8SR_DEBUG_TIMESTAMP
+      s_mov_b32 s_g8sr_ts_restore_s[0], s_restore_pc_lo
+      s_mov_b32 s_g8sr_ts_restore_s[1], s_restore_pc_hi
+end
+
+    // HWREG SR memory offset : size(VGPR)+size(SGPR)
+    get_vgpr_size_bytes(s_restore_mem_offset)
+    get_sgpr_size_bytes(s_restore_tmp)
+    s_add_u32 s_restore_mem_offset, s_restore_mem_offset, s_restore_tmp
+
+
+    s_mov_b32       s_restore_buf_rsrc2, 0x4                                                //NUM_RECORDS   in bytes
+    if (SWIZZLE_EN)
+        s_add_u32       s_restore_buf_rsrc2, s_restore_buf_rsrc2, 0x0                       //FIXME need to use swizzle to enable bounds checking?
+    else
+        s_mov_b32       s_restore_buf_rsrc2,  0x1000000                                     //NUM_RECORDS in bytes
+    end
+
+    read_hwreg_from_mem(s_restore_m0, s_restore_buf_rsrc0, s_restore_mem_offset)                    //M0
+    read_hwreg_from_mem(s_restore_pc_lo, s_restore_buf_rsrc0, s_restore_mem_offset)             //PC
+    read_hwreg_from_mem(s_restore_pc_hi, s_restore_buf_rsrc0, s_restore_mem_offset)
+    read_hwreg_from_mem(s_restore_exec_lo, s_restore_buf_rsrc0, s_restore_mem_offset)               //EXEC
+    read_hwreg_from_mem(s_restore_exec_hi, s_restore_buf_rsrc0, s_restore_mem_offset)
+    read_hwreg_from_mem(s_restore_status, s_restore_buf_rsrc0, s_restore_mem_offset)                //STATUS
+    read_hwreg_from_mem(s_restore_trapsts, s_restore_buf_rsrc0, s_restore_mem_offset)               //TRAPSTS
+    read_hwreg_from_mem(xnack_mask_lo, s_restore_buf_rsrc0, s_restore_mem_offset)                   //XNACK_MASK_LO
+    read_hwreg_from_mem(xnack_mask_hi, s_restore_buf_rsrc0, s_restore_mem_offset)                   //XNACK_MASK_HI
+    read_hwreg_from_mem(s_restore_mode, s_restore_buf_rsrc0, s_restore_mem_offset)              //MODE
+    read_hwreg_from_mem(tba_lo, s_restore_buf_rsrc0, s_restore_mem_offset)                      //TBA_LO
+    read_hwreg_from_mem(tba_hi, s_restore_buf_rsrc0, s_restore_mem_offset)                      //TBA_HI
+
+    s_waitcnt       lgkmcnt(0)                                                                                      //from now on, it is safe to restore STATUS and IB_STS
+
+    s_and_b32 s_restore_pc_hi, s_restore_pc_hi, 0x0000ffff      //pc[47:32]        //Do it here in order not to affect STATUS
+
+    //for normal save & restore, the saved PC points to the next inst to execute, no adjustment needs to be made, otherwise:
+    if ((EMU_RUN_HACK) && (!EMU_RUN_HACK_RESTORE_NORMAL))
+        s_add_u32 s_restore_pc_lo, s_restore_pc_lo, 8            //pc[31:0]+8     //two back-to-back s_trap are used (first for save and second for restore)
+        s_addc_u32  s_restore_pc_hi, s_restore_pc_hi, 0x0        //carry bit over
+    end
+    if ((EMU_RUN_HACK) && (EMU_RUN_HACK_RESTORE_NORMAL))
+        s_add_u32 s_restore_pc_lo, s_restore_pc_lo, 4            //pc[31:0]+4     // save is hack through s_trap but restore is normal
+        s_addc_u32  s_restore_pc_hi, s_restore_pc_hi, 0x0        //carry bit over
+    end
+
+    s_mov_b32       m0,         s_restore_m0
+    s_mov_b32       exec_lo,    s_restore_exec_lo
+    s_mov_b32       exec_hi,    s_restore_exec_hi
+
+    s_and_b32       s_restore_m0, SQ_WAVE_TRAPSTS_PRE_SAVECTX_MASK, s_restore_trapsts
+    s_setreg_b32    hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_PRE_SAVECTX_SHIFT, SQ_WAVE_TRAPSTS_PRE_SAVECTX_SIZE), s_restore_m0
+    s_and_b32       s_restore_m0, SQ_WAVE_TRAPSTS_POST_SAVECTX_MASK, s_restore_trapsts
+    s_lshr_b32      s_restore_m0, s_restore_m0, SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT
+    s_setreg_b32    hwreg(HW_REG_TRAPSTS, SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT, SQ_WAVE_TRAPSTS_POST_SAVECTX_SIZE), s_restore_m0
+    //s_setreg_b32  hwreg(HW_REG_TRAPSTS),  s_restore_trapsts      //don't overwrite SAVECTX bit as it may be set through external SAVECTX during restore
+    s_setreg_b32    hwreg(HW_REG_MODE),     s_restore_mode
+    //reuse s_restore_m0 as a temp register
+    s_and_b32       s_restore_m0, s_restore_pc_hi, S_SAVE_PC_HI_RCNT_MASK
+    s_lshr_b32      s_restore_m0, s_restore_m0, S_SAVE_PC_HI_RCNT_SHIFT
+    s_lshl_b32      s_restore_m0, s_restore_m0, SQ_WAVE_IB_STS_RCNT_SHIFT
+    s_mov_b32       s_restore_tmp, 0x0                                                                              //IB_STS is zero
+    s_or_b32        s_restore_tmp, s_restore_tmp, s_restore_m0
+    s_and_b32       s_restore_m0, s_restore_pc_hi, S_SAVE_PC_HI_FIRST_REPLAY_MASK
+    s_lshr_b32      s_restore_m0, s_restore_m0, S_SAVE_PC_HI_FIRST_REPLAY_SHIFT
+    s_lshl_b32      s_restore_m0, s_restore_m0, SQ_WAVE_IB_STS_FIRST_REPLAY_SHIFT
+    s_or_b32        s_restore_tmp, s_restore_tmp, s_restore_m0
+    s_and_b32       s_restore_m0, s_restore_status, SQ_WAVE_STATUS_INST_ATC_MASK
+    s_lshr_b32      s_restore_m0, s_restore_m0, SQ_WAVE_STATUS_INST_ATC_SHIFT
+    s_setreg_b32    hwreg(HW_REG_IB_STS),   s_restore_tmp
+
+    s_and_b64    exec, exec, exec  // Restore STATUS.EXECZ, not writable by s_setreg_b32
+    s_and_b64    vcc, vcc, vcc  // Restore STATUS.VCCZ, not writable by s_setreg_b32
+    s_setreg_b32    hwreg(HW_REG_STATUS),   s_restore_status     // SCC is included, which is changed by previous salu
+
+    s_barrier                                                   //barrier to ensure the readiness of LDS before access attemps from any other wave in the same TG //FIXME not performance-optimal at this time
+
+if G8SR_DEBUG_TIMESTAMP
+    s_memrealtime s_g8sr_ts_restore_d
+    s_waitcnt lgkmcnt(0)
+end
+
+//  s_rfe_b64 s_restore_pc_lo                                   //Return to the main shader program and resume execution
+    s_rfe_restore_b64  s_restore_pc_lo, s_restore_m0            // s_restore_m0[0] is used to set STATUS.inst_atc
+
+
+/**************************************************************************/
+/*                      the END                                           */
+/**************************************************************************/
+L_END_PGM:
+    s_endpgm
+
+end
+
+
+/**************************************************************************/
+/*                      the helper functions                              */
+/**************************************************************************/
+
+//Only for save hwreg to mem
+function write_hwreg_to_mem(s, s_rsrc, s_mem_offset)
+        s_mov_b32 exec_lo, m0                   //assuming exec_lo is not needed anymore from this point on
+        s_mov_b32 m0, s_mem_offset
+        s_buffer_store_dword s, s_rsrc, m0      glc:1
+        s_add_u32       s_mem_offset, s_mem_offset, 4
+        s_mov_b32   m0, exec_lo
+end
+
+
+// HWREG are saved before SGPRs, so all HWREG could be use.
+function write_16sgpr_to_mem(s, s_rsrc, s_mem_offset)
+
+        s_buffer_store_dwordx4 s[0], s_rsrc, 0  glc:1
+        s_buffer_store_dwordx4 s[4], s_rsrc, 16  glc:1
+        s_buffer_store_dwordx4 s[8], s_rsrc, 32  glc:1
+        s_buffer_store_dwordx4 s[12], s_rsrc, 48 glc:1
+        s_add_u32       s_rsrc[0], s_rsrc[0], 4*16
+        s_addc_u32      s_rsrc[1], s_rsrc[1], 0x0             // +scc
+end
+
+
+function read_hwreg_from_mem(s, s_rsrc, s_mem_offset)
+    s_buffer_load_dword s, s_rsrc, s_mem_offset     glc:1
+    s_add_u32       s_mem_offset, s_mem_offset, 4
+end
+
+function read_16sgpr_from_mem(s, s_rsrc, s_mem_offset)
+    s_buffer_load_dwordx16 s, s_rsrc, s_mem_offset      glc:1
+    s_sub_u32       s_mem_offset, s_mem_offset, 4*16
+end
+
+
+
+function get_lds_size_bytes(s_lds_size_byte)
+    // SQ LDS granularity is 64DW, while PGM_RSRC2.lds_size is in granularity 128DW
+    s_getreg_b32   s_lds_size_byte, hwreg(HW_REG_LDS_ALLOC, SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT, SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE)          // lds_size
+    s_lshl_b32     s_lds_size_byte, s_lds_size_byte, 8                      //LDS size in dwords = lds_size * 64 *4Bytes    // granularity 64DW
+end
+
+function get_vgpr_size_bytes(s_vgpr_size_byte)
+    s_getreg_b32   s_vgpr_size_byte, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_VGPR_SIZE_SIZE)  //vpgr_size
+    s_add_u32      s_vgpr_size_byte, s_vgpr_size_byte, 1
+    s_lshl_b32     s_vgpr_size_byte, s_vgpr_size_byte, (2+8) //Number of VGPRs = (vgpr_size + 1) * 4 * 64 * 4   (non-zero value)   //FIXME for GFX, zero is possible
+end
+
+function get_sgpr_size_bytes(s_sgpr_size_byte)
+    s_getreg_b32   s_sgpr_size_byte, hwreg(HW_REG_GPR_ALLOC,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SHIFT,SQ_WAVE_GPR_ALLOC_SGPR_SIZE_SIZE)  //spgr_size
+    s_add_u32      s_sgpr_size_byte, s_sgpr_size_byte, 1
+    s_lshl_b32     s_sgpr_size_byte, s_sgpr_size_byte, 6 //Number of SGPRs = (sgpr_size + 1) * 16 *4   (non-zero value)
+end
+
+function get_hwreg_size_bytes
+    return 128 //HWREG size 128 bytes
+end
+
+
+#endif
+
+static const uint32_t cwsr_trap_gfx8_hex[] = {
+	0xbf820001, 0xbf820123,
+	0xb8f4f802, 0x89748674,
+	0xb8f5f803, 0x8675ff75,
+	0x00000400, 0xbf850011,
+	0xc00a1e37, 0x00000000,
+	0xbf8c007f, 0x87777978,
+	0xbf840002, 0xb974f802,
+	0xbe801d78, 0xb8f5f803,
+	0x8675ff75, 0x000001ff,
+	0xbf850002, 0x80708470,
+	0x82718071, 0x8671ff71,
+	0x0000ffff, 0xb974f802,
+	0xbe801f70, 0xb8f5f803,
+	0x8675ff75, 0x00000100,
+	0xbf840006, 0xbefa0080,
+	0xb97a0203, 0x8671ff71,
+	0x0000ffff, 0x80f08870,
+	0x82f18071, 0xbefa0080,
+	0xb97a0283, 0xbef60068,
+	0xbef70069, 0xb8fa1c07,
+	0x8e7a9c7a, 0x87717a71,
+	0xb8fa03c7, 0x8e7a9b7a,
+	0x87717a71, 0xb8faf807,
+	0x867aff7a, 0x00007fff,
+	0xb97af807, 0xbef2007e,
+	0xbef3007f, 0xbefe0180,
+	0xbf900004, 0xbf8e0002,
+	0xbf88fffe, 0xbef8007e,
+	0x8679ff7f, 0x0000ffff,
+	0x8779ff79, 0x00040000,
+	0xbefa0080, 0xbefb00ff,
+	0x00807fac, 0x867aff7f,
+	0x08000000, 0x8f7a837a,
+	0x877b7a7b, 0x867aff7f,
+	0x70000000, 0x8f7a817a,
+	0x877b7a7b, 0xbeef007c,
+	0xbeee0080, 0xb8ee2a05,
+	0x806e816e, 0x8e6e8a6e,
+	0xb8fa1605, 0x807a817a,
+	0x8e7a867a, 0x806e7a6e,
+	0xbefa0084, 0xbefa00ff,
+	0x01000000, 0xbefe007c,
+	0xbefc006e, 0xc0611bfc,
+	0x0000007c, 0x806e846e,
+	0xbefc007e, 0xbefe007c,
+	0xbefc006e, 0xc0611c3c,
+	0x0000007c, 0x806e846e,
+	0xbefc007e, 0xbefe007c,
+	0xbefc006e, 0xc0611c7c,
+	0x0000007c, 0x806e846e,
+	0xbefc007e, 0xbefe007c,
+	0xbefc006e, 0xc0611cbc,
+	0x0000007c, 0x806e846e,
+	0xbefc007e, 0xbefe007c,
+	0xbefc006e, 0xc0611cfc,
+	0x0000007c, 0x806e846e,
+	0xbefc007e, 0xbefe007c,
+	0xbefc006e, 0xc0611d3c,
+	0x0000007c, 0x806e846e,
+	0xbefc007e, 0xb8f5f803,
+	0xbefe007c, 0xbefc006e,
+	0xc0611d7c, 0x0000007c,
+	0x806e846e, 0xbefc007e,
+	0xbefe007c, 0xbefc006e,
+	0xc0611dbc, 0x0000007c,
+	0x806e846e, 0xbefc007e,
+	0xbefe007c, 0xbefc006e,
+	0xc0611dfc, 0x0000007c,
+	0x806e846e, 0xbefc007e,
+	0xb8eff801, 0xbefe007c,
+	0xbefc006e, 0xc0611bfc,
+	0x0000007c, 0x806e846e,
+	0xbefc007e, 0xbefe007c,
+	0xbefc006e, 0xc0611b3c,
+	0x0000007c, 0x806e846e,
+	0xbefc007e, 0xbefe007c,
+	0xbefc006e, 0xc0611b7c,
+	0x0000007c, 0x806e846e,
+	0xbefc007e, 0x867aff7f,
+	0x04000000, 0xbef30080,
+	0x8773737a, 0xb8ee2a05,
+	0x806e816e, 0x8e6e8a6e,
+	0xb8f51605, 0x80758175,
+	0x8e758475, 0x8e7a8275,
+	0xbefa00ff, 0x01000000,
+	0xbef60178, 0x80786e78,
+	0x82798079, 0xbefc0080,
+	0xbe802b00, 0xbe822b02,
+	0xbe842b04, 0xbe862b06,
+	0xbe882b08, 0xbe8a2b0a,
+	0xbe8c2b0c, 0xbe8e2b0e,
+	0xc06b003c, 0x00000000,
+	0xc06b013c, 0x00000010,
+	0xc06b023c, 0x00000020,
+	0xc06b033c, 0x00000030,
+	0x8078c078, 0x82798079,
+	0x807c907c, 0xbf0a757c,
+	0xbf85ffeb, 0xbef80176,
+	0xbeee0080, 0xbefe00c1,
+	0xbeff00c1, 0xbefa00ff,
+	0x01000000, 0xe0724000,
+	0x6e1e0000, 0xe0724100,
+	0x6e1e0100, 0xe0724200,
+	0x6e1e0200, 0xe0724300,
+	0x6e1e0300, 0xbefe00c1,
+	0xbeff00c1, 0xb8f54306,
+	0x8675c175, 0xbf84002c,
+	0xbf8a0000, 0x867aff73,
+	0x04000000, 0xbf840028,
+	0x8e758675, 0x8e758275,
+	0xbefa0075, 0xb8ee2a05,
+	0x806e816e, 0x8e6e8a6e,
+	0xb8fa1605, 0x807a817a,
+	0x8e7a867a, 0x806e7a6e,
+	0x806eff6e, 0x00000080,
+	0xbefa00ff, 0x01000000,
+	0xbefc0080, 0xd28c0002,
+	0x000100c1, 0xd28d0003,
+	0x000204c1, 0xd1060002,
+	0x00011103, 0x7e0602ff,
+	0x00000200, 0xbefc00ff,
+	0x00010000, 0xbe80007b,
+	0x867bff7b, 0xff7fffff,
+	0x877bff7b, 0x00058000,
+	0xd8ec0000, 0x00000002,
+	0xbf8c007f, 0xe0765000,
+	0x6e1e0002, 0x32040702,
+	0xd0c9006a, 0x0000eb02,
+	0xbf87fff7, 0xbefb0000,
+	0xbeee00ff, 0x00000400,
+	0xbefe00c1, 0xbeff00c1,
+	0xb8f52a05, 0x80758175,
+	0x8e758275, 0x8e7a8875,
+	0xbefa00ff, 0x01000000,
+	0xbefc0084, 0xbf0a757c,
+	0xbf840015, 0xbf11017c,
+	0x8075ff75, 0x00001000,
+	0x7e000300, 0x7e020301,
+	0x7e040302, 0x7e060303,
+	0xe0724000, 0x6e1e0000,
+	0xe0724100, 0x6e1e0100,
+	0xe0724200, 0x6e1e0200,
+	0xe0724300, 0x6e1e0300,
+	0x807c847c, 0x806eff6e,
+	0x00000400, 0xbf0a757c,
+	0xbf85ffef, 0xbf9c0000,
+	0xbf8200ca, 0xbef8007e,
+	0x8679ff7f, 0x0000ffff,
+	0x8779ff79, 0x00040000,
+	0xbefa0080, 0xbefb00ff,
+	0x00807fac, 0x8676ff7f,
+	0x08000000, 0x8f768376,
+	0x877b767b, 0x8676ff7f,
+	0x70000000, 0x8f768176,
+	0x877b767b, 0x8676ff7f,
+	0x04000000, 0xbf84001e,
+	0xbefe00c1, 0xbeff00c1,
+	0xb8f34306, 0x8673c173,
+	0xbf840019, 0x8e738673,
+	0x8e738273, 0xbefa0073,
+	0xb8f22a05, 0x80728172,
+	0x8e728a72, 0xb8f61605,
+	0x80768176, 0x8e768676,
+	0x80727672, 0x8072ff72,
+	0x00000080, 0xbefa00ff,
+	0x01000000, 0xbefc0080,
+	0xe0510000, 0x721e0000,
+	0xe0510100, 0x721e0000,
+	0x807cff7c, 0x00000200,
+	0x8072ff72, 0x00000200,
+	0xbf0a737c, 0xbf85fff6,
+	0xbef20080, 0xbefe00c1,
+	0xbeff00c1, 0xb8f32a05,
+	0x80738173, 0x8e738273,
+	0x8e7a8873, 0xbefa00ff,
+	0x01000000, 0xbef60072,
+	0x8072ff72, 0x00000400,
+	0xbefc0084, 0xbf11087c,
+	0x8073ff73, 0x00008000,
+	0xe0524000, 0x721e0000,
+	0xe0524100, 0x721e0100,
+	0xe0524200, 0x721e0200,
+	0xe0524300, 0x721e0300,
+	0xbf8c0f70, 0x7e000300,
+	0x7e020301, 0x7e040302,
+	0x7e060303, 0x807c847c,
+	0x8072ff72, 0x00000400,
+	0xbf0a737c, 0xbf85ffee,
+	0xbf9c0000, 0xe0524000,
+	0x761e0000, 0xe0524100,
+	0x761e0100, 0xe0524200,
+	0x761e0200, 0xe0524300,
+	0x761e0300, 0xb8f22a05,
+	0x80728172, 0x8e728a72,
+	0xb8f61605, 0x80768176,
+	0x8e768676, 0x80727672,
+	0x80f2c072, 0xb8f31605,
+	0x80738173, 0x8e738473,
+	0x8e7a8273, 0xbefa00ff,
+	0x01000000, 0xbefc0073,
+	0xc031003c, 0x00000072,
+	0x80f2c072, 0xbf8c007f,
+	0x80fc907c, 0xbe802d00,
+	0xbe822d02, 0xbe842d04,
+	0xbe862d06, 0xbe882d08,
+	0xbe8a2d0a, 0xbe8c2d0c,
+	0xbe8e2d0e, 0xbf06807c,
+	0xbf84fff1, 0xb8f22a05,
+	0x80728172, 0x8e728a72,
+	0xb8f61605, 0x80768176,
+	0x8e768676, 0x80727672,
+	0xbefa0084, 0xbefa00ff,
+	0x01000000, 0xc0211cfc,
+	0x00000072, 0x80728472,
+	0xc0211c3c, 0x00000072,
+	0x80728472, 0xc0211c7c,
+	0x00000072, 0x80728472,
+	0xc0211bbc, 0x00000072,
+	0x80728472, 0xc0211bfc,
+	0x00000072, 0x80728472,
+	0xc0211d3c, 0x00000072,
+	0x80728472, 0xc0211d7c,
+	0x00000072, 0x80728472,
+	0xc0211a3c, 0x00000072,
+	0x80728472, 0xc0211a7c,
+	0x00000072, 0x80728472,
+	0xc0211dfc, 0x00000072,
+	0x80728472, 0xc0211b3c,
+	0x00000072, 0x80728472,
+	0xc0211b7c, 0x00000072,
+	0x80728472, 0xbf8c007f,
+	0x8671ff71, 0x0000ffff,
+	0xbefc0073, 0xbefe006e,
+	0xbeff006f, 0x867375ff,
+	0x000003ff, 0xb9734803,
+	0x867375ff, 0xfffff800,
+	0x8f738b73, 0xb973a2c3,
+	0xb977f801, 0x8673ff71,
+	0xf0000000, 0x8f739c73,
+	0x8e739073, 0xbef60080,
+	0x87767376, 0x8673ff71,
+	0x08000000, 0x8f739b73,
+	0x8e738f73, 0x87767376,
+	0x8673ff74, 0x00800000,
+	0x8f739773, 0xb976f807,
+	0x86fe7e7e, 0x86ea6a6a,
+	0xb974f802, 0xbf8a0000,
+	0x95807370, 0xbf810000,
+};
+
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index 68ac326..4645328 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -29,7 +29,7 @@
 #include "kfd_priv.h"
 #include "kfd_device_queue_manager.h"
 #include "kfd_pm4_headers_vi.h"
-#include "cwsr_trap_handler_carrizo.h"
+#include "cwsr_trap_handler_gfx8.asm"
 #include "cwsr_trap_handler_gfx9.asm"
 
 #define MQD_SIZE_ALIGNED 768
@@ -486,9 +486,11 @@ static int kfd_cwsr_init(struct kfd_dev *kfd)
 		unsigned int size;
 
 		if (kfd->device_info->asic_family < CHIP_VEGA10) {
-			cwsr_hex = cwsr_trap_carrizo_hex;
-			size = sizeof(cwsr_trap_carrizo_hex);
+			BUILD_BUG_ON(sizeof(cwsr_trap_gfx8_hex) > PAGE_SIZE);
+			cwsr_hex = cwsr_trap_gfx8_hex;
+			size = sizeof(cwsr_trap_gfx8_hex);
 		} else {
+			BUILD_BUG_ON(sizeof(cwsr_trap_gfx9_hex) > PAGE_SIZE);
 			cwsr_hex = cwsr_trap_gfx9_hex;
 			size = sizeof(cwsr_trap_gfx9_hex);
 		}
-- 
2.7.4