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From 0462b5fb1e91183c16e204e1a6cf436ef0d8d0f8 Mon Sep 17 00:00:00 2001
From: eager <eager@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sun, 23 Feb 2014 18:44:27 +0000
Subject: [PATCH] 2014-02-23 David Holsgrove <david.holsgrove@xilinx.com>
* /config/microblaze/microblaze.c: Add microblaze_asm_output_mi_thunk
and define TARGET_ASM_OUTPUT_MI_THUNK and
TARGET_ASM_CAN_OUTPUT_MI_THUNK.
Upstream-Status: Backport
---
gcc/config/microblaze/microblaze.c | 73 ++++++++++++++++++++++++++++++++++++++
2 files changed, 79 insertions(+)
diff --git a/gcc/config/microblaze/microblaze.c b/gcc/config/microblaze/microblaze.c
index 985d26a..ba8109b 100644
--- a/gcc/config/microblaze/microblaze.c
+++ b/gcc/config/microblaze/microblaze.c
@@ -3087,6 +3087,73 @@ expand_pic_symbol_ref (enum machine_mode mode ATTRIBUTE_UNUSED, rtx op)
return result;
}
+static void
+microblaze_asm_output_mi_thunk (FILE *file, tree thunk_fndecl ATTRIBUTE_UNUSED,
+ HOST_WIDE_INT delta, HOST_WIDE_INT vcall_offset,
+ tree function)
+{
+ rtx this_rtx, insn, funexp;
+
+ reload_completed = 1;
+ epilogue_completed = 1;
+
+ /* Mark the end of the (empty) prologue. */
+ emit_note (NOTE_INSN_PROLOGUE_END);
+
+ /* Find the "this" pointer. If the function returns a structure,
+ the structure return pointer is in MB_ABI_FIRST_ARG_REGNUM. */
+ if (aggregate_value_p (TREE_TYPE (TREE_TYPE (function)), function))
+ this_rtx = gen_rtx_REG (Pmode, (MB_ABI_FIRST_ARG_REGNUM + 1));
+ else
+ this_rtx = gen_rtx_REG (Pmode, MB_ABI_FIRST_ARG_REGNUM);
+
+ /* Apply the constant offset, if required. */
+ if (delta)
+ emit_insn (gen_addsi3 (this_rtx, this_rtx, GEN_INT (delta)));
+
+ /* Apply the offset from the vtable, if required. */
+ if (vcall_offset)
+ {
+ rtx vcall_offset_rtx = GEN_INT (vcall_offset);
+ rtx temp1 = gen_rtx_REG (Pmode, MB_ABI_TEMP1_REGNUM);
+
+ emit_move_insn (temp1, gen_rtx_MEM (Pmode, this_rtx));
+
+ rtx loc = gen_rtx_PLUS (Pmode, temp1, vcall_offset_rtx);
+ emit_move_insn (temp1, gen_rtx_MEM (Pmode, loc));
+
+ emit_insn (gen_addsi3 (this_rtx, this_rtx, temp1));
+ }
+
+ /* Generate a tail call to the target function. */
+ if (!TREE_USED (function))
+ {
+ assemble_external (function);
+ TREE_USED (function) = 1;
+ }
+
+ funexp = XEXP (DECL_RTL (function), 0);
+ rtx temp2 = gen_rtx_REG (Pmode, MB_ABI_TEMP2_REGNUM);
+
+ if (flag_pic)
+ emit_move_insn (temp2, expand_pic_symbol_ref (Pmode, funexp));
+ else
+ emit_move_insn (temp2, funexp);
+
+ emit_insn (gen_indirect_jump (temp2));
+
+ /* Run just enough of rest_of_compilation. This sequence was
+ "borrowed" from rs6000.c. */
+ insn = get_insns ();
+ shorten_branches (insn);
+ final_start_function (insn, file, 1);
+ final (insn, file, 1);
+ final_end_function ();
+
+ reload_completed = 0;
+ epilogue_completed = 0;
+}
+
bool
microblaze_expand_move (enum machine_mode mode, rtx operands[])
{
@@ -3504,6 +3571,12 @@ microblaze_legitimate_constant_p (enum machine_mode mode ATTRIBUTE_UNUSED, rtx x
#undef TARGET_SECONDARY_RELOAD
#define TARGET_SECONDARY_RELOAD microblaze_secondary_reload
+#undef TARGET_ASM_OUTPUT_MI_THUNK
+#define TARGET_ASM_OUTPUT_MI_THUNK microblaze_asm_output_mi_thunk
+
+#undef TARGET_ASM_CAN_OUTPUT_MI_THUNK
+#define TARGET_ASM_CAN_OUTPUT_MI_THUNK hook_bool_const_tree_hwi_hwi_const_tree_true
+
#undef TARGET_SCHED_ADJUST_COST
#define TARGET_SCHED_ADJUST_COST microblaze_adjust_cost
--
1.9.0
|
