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Diffstat (limited to 'arch/parisc/hpux/wrappers.S')
| -rw-r--r-- | arch/parisc/hpux/wrappers.S | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/arch/parisc/hpux/wrappers.S b/arch/parisc/hpux/wrappers.S deleted file mode 100644 index 58c53c879c02..000000000000 --- a/arch/parisc/hpux/wrappers.S +++ /dev/null @@ -1,250 +0,0 @@ -/* - * Linux/PARISC Project (http://www.parisc-linux.org/) - * - * HP-UX System Call Wrapper routines and System Call Return Path - * - * Copyright (C) 2000 Hewlett-Packard (John Marvin) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#ifdef CONFIG_64BIT -#warning PA64 support needs more work...did first cut -#endif - -#include <asm/asm-offsets.h> -#include <asm/assembly.h> -#include <asm/signal.h> -#include <linux/linkage.h> - - .level LEVEL - .text - - /* These should probably go in a header file somewhere. - * They are duplicated in kernel/wrappers.S - * Possibly we should consider consolidating these - * register save/restore macros. - */ - .macro reg_save regs -#ifdef CONFIG_64BIT -#warning NEEDS WORK for 64-bit -#endif - STREG %r3, PT_GR3(\regs) - STREG %r4, PT_GR4(\regs) - STREG %r5, PT_GR5(\regs) - STREG %r6, PT_GR6(\regs) - STREG %r7, PT_GR7(\regs) - STREG %r8, PT_GR8(\regs) - STREG %r9, PT_GR9(\regs) - STREG %r10,PT_GR10(\regs) - STREG %r11,PT_GR11(\regs) - STREG %r12,PT_GR12(\regs) - STREG %r13,PT_GR13(\regs) - STREG %r14,PT_GR14(\regs) - STREG %r15,PT_GR15(\regs) - STREG %r16,PT_GR16(\regs) - STREG %r17,PT_GR17(\regs) - STREG %r18,PT_GR18(\regs) - .endm - - .macro reg_restore regs - LDREG PT_GR3(\regs), %r3 - LDREG PT_GR4(\regs), %r4 - LDREG PT_GR5(\regs), %r5 - LDREG PT_GR6(\regs), %r6 - LDREG PT_GR7(\regs), %r7 - LDREG PT_GR8(\regs), %r8 - LDREG PT_GR9(\regs), %r9 - LDREG PT_GR10(\regs),%r10 - LDREG PT_GR11(\regs),%r11 - LDREG PT_GR12(\regs),%r12 - LDREG PT_GR13(\regs),%r13 - LDREG PT_GR14(\regs),%r14 - LDREG PT_GR15(\regs),%r15 - LDREG PT_GR16(\regs),%r16 - LDREG PT_GR17(\regs),%r17 - LDREG PT_GR18(\regs),%r18 - .endm - - - .import sys_fork - -ENTRY(hpux_fork_wrapper) - ldo TASK_REGS-TASK_SZ_ALGN-64(%r30),%r1 ;! get pt regs - ;! pointer in task - reg_save %r1 - - STREG %r2,-20(%r30) - ldo 64(%r30),%r30 - STREG %r2,PT_GR19(%r1) ;! save for child - STREG %r30,PT_GR21(%r1) ;! save for child - - LDREG PT_GR30(%r1),%r25 - mtctl %r25,%cr29 - copy %r1,%r24 - bl sys_clone,%r2 - ldi SIGCHLD,%r26 - - LDREG -84(%r30),%r2 -fork_return: - ldo -64(%r30),%r30 - ldo TASK_REGS-TASK_SZ_ALGN-64(%r30),%r1 ;! get pt regs - - reg_restore %r1 - - /* - * HP-UX wants pid (child gets parent pid, parent gets child pid) - * in r28 and a flag in r29 (r29 == 1 for child, 0 for parent). - * Linux fork returns 0 for child, pid for parent. Since HP-UX - * libc stub throws away parent pid and returns 0 for child, - * we'll just return 0 for parent pid now. Only applications - * that jump directly to the gateway page (not supported) will - * know the difference. We can fix this later if necessary. - */ - - ldo -1024(%r0),%r1 - comb,>>=,n %r28,%r1,fork_exit /* just let the syscall exit handle it */ - or,= %r28,%r0,%r0 - or,tr %r0,%r0,%r29 /* r28 <> 0, we are parent, set r29 to 0 */ - ldo 1(%r0),%r29 /* r28 == 0, we are child, set r29 to 1 */ - -fork_exit: - bv %r0(%r2) - nop -ENDPROC(hpux_fork_wrapper) - - /* Set the return value for the child */ - -ENTRY(hpux_child_return) -#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT) - bl,n schedule_tail, %r2 -#endif - - LDREG TASK_PT_GR19-TASK_SZ_ALGN-128(%r30),%r2 - b fork_return - copy %r0,%r28 -ENDPROC(hpux_child_return) - - .import hpux_execve - -ENTRY(hpux_execv_wrapper) - copy %r0,%r24 /* NULL environment */ - -ENTRY(hpux_execve_wrapper) - - ldo TASK_REGS-TASK_SZ_ALGN-64(%r30),%r1 ;! get pt regs - - /* - * Do we need to save/restore r3-r18 here? - * I don't think so. why would new thread need old - * threads registers? - */ - - /* Store arg0, arg1 and arg2 so that hpux_execve will find them */ - - STREG %r26,PT_GR26(%r1) - STREG %r25,PT_GR25(%r1) - STREG %r24,PT_GR24(%r1) - - STREG %r2,-20(%r30) - ldo 64(%r30),%r30 - bl hpux_execve,%r2 - copy %r1,%arg0 - - ldo -64(%r30),%r30 - LDREG -20(%r30),%r2 - - /* If exec succeeded we need to load the args */ - - ldo -1024(%r0),%r1 - comb,>>= %r28,%r1,exec_error - copy %r2,%r19 - ldo -TASK_SZ_ALGN-64(%r30),%r1 ;! get task ptr - LDREG TASK_PT_GR26(%r1),%r26 - LDREG TASK_PT_GR25(%r1),%r25 - LDREG TASK_PT_GR24(%r1),%r24 - LDREG TASK_PT_GR23(%r1),%r23 - copy %r0,%r2 /* Flag to syscall_exit not to clear args */ - -exec_error: - bv %r0(%r19) - nop -ENDPROC(hpux_execv_wrapper) - - .import hpux_pipe - - /* HP-UX expects pipefd's returned in r28 & r29 */ - -ENTRY(hpux_pipe_wrapper) - STREG %r2,-20(%r30) - ldo 64(%r30),%r30 - bl hpux_pipe,%r2 - ldo -56(%r30),%r26 /* pass local array to hpux_pipe */ - - - ldo -1024(%r0),%r1 - comb,>>= %r28,%r1,pipe_exit /* let syscall exit handle it */ - LDREG -84(%r30),%r2 - - /* if success, load fd's from stack array */ - - LDREG -56(%r30),%r28 - LDREG -52(%r30),%r29 - -pipe_exit: - bv %r0(%r2) - ldo -64(%r30),%r30 -ENDPROC(hpux_pipe_wrapper) - - .import syscall_exit - -ENTRY(hpux_syscall_exit) - /* - * - * HP-UX call return conventions: - * - * if error: - * r22 = 1 - * r28 = errno value - * r29 = secondary return value - * else - * r22 = 0 - * r28 = return value - * r29 = secondary return value - * - * For now, we'll just check to see if r28 is < (unsigned long)-1024 - * (to handle addresses > 2 Gb) and if so set r22 to zero. If not, - * we'll complement r28 and set r22 to 1. Wrappers will be - * needed for syscalls that care about the secondary return value. - * The wrapper may also need a way of avoiding the following code, - * but we'll deal with that when it becomes necessary. - */ - - ldo -1024(%r0),%r1 - comb,<< %r28,%r1,no_error - copy %r0,%r22 - subi 0,%r28,%r28 - ldo 1(%r0),%r22 - -no_error: - b,n syscall_exit -ENDPROC(hpux_syscall_exit) - - .import hpux_unimplemented - -ENTRY(hpux_unimplemented_wrapper) - b hpux_unimplemented - STREG %r22,-64(%r30) /* overwrite arg8 with syscall number */ -ENDPROC(hpux_unimplemented_wrapper) |