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[Qemu-devel] [PATCH 07/11] TCG/Sparc64: use stack for TCG temps
From: |
Blue Swirl |
Subject: |
[Qemu-devel] [PATCH 07/11] TCG/Sparc64: use stack for TCG temps |
Date: |
Sat, 14 May 2011 22:40:47 +0300 |
Use stack instead of temp_buf array in CPUState for TCG temps.
On Sparc64, stack pointer is not aligned but there is a fixed bias of 2047,
so don't try to enforce alignment.
Signed-off-by: Blue Swirl <address@hidden>
---
tcg/sparc/tcg-target.c | 7 ++++---
tcg/tcg.c | 2 ++
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c
index 3dd3696..1a3969a 100644
--- a/tcg/sparc/tcg-target.c
+++ b/tcg/sparc/tcg-target.c
@@ -693,8 +693,11 @@ static void tcg_out_setcond2_i32(TCGContext *s,
TCGCond cond, TCGArg ret,
/* Generate global QEMU prologue and epilogue code */
static void tcg_target_qemu_prologue(TCGContext *s)
{
+ tcg_set_frame(s, TCG_REG_I6, TCG_TARGET_CALL_STACK_OFFSET,
+ CPU_TEMP_BUF_NLONGS * (int)sizeof(long));
tcg_out32(s, SAVE | INSN_RD(TCG_REG_O6) | INSN_RS1(TCG_REG_O6) |
- INSN_IMM13(-TCG_TARGET_STACK_MINFRAME));
+ INSN_IMM13(-(TCG_TARGET_STACK_MINFRAME +
+ CPU_TEMP_BUF_NLONGS * (int)sizeof(long))));
tcg_out32(s, JMPL | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_I0) |
INSN_RS2(TCG_REG_G0));
tcg_out_nop(s);
@@ -1566,6 +1569,4 @@ static void tcg_target_init(TCGContext *s)
tcg_regset_set_reg(s->reserved_regs, TCG_REG_O6);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_O7);
tcg_add_target_add_op_defs(sparc_op_defs);
- tcg_set_frame(s, TCG_AREG0, offsetof(CPUState, temp_buf),
- CPU_TEMP_BUF_NLONGS * sizeof(long));
}
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 75972c3..82316ab 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -1434,9 +1434,11 @@ static void temp_allocate_frame(TCGContext *s, int temp)
{
TCGTemp *ts;
ts = &s->temps[temp];
+#ifndef __sparc_v9__ /* Sparc64 stack is accessed with offset of 2047 */
s->current_frame_offset = (s->current_frame_offset +
(tcg_target_long)sizeof(tcg_target_long) - 1) &
~(sizeof(tcg_target_long) - 1);
+#endif
if (s->current_frame_offset + (tcg_target_long)sizeof(tcg_target_long) >
s->frame_end) {
tcg_abort();
--
1.6.2.4
0007-TCG-Sparc64-use-stack-for-TCG-temps.patch
Description: Text Data
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