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[Qemu-devel] [PATCH 09/62] tcg-s390: Mark R0 & R15 reserved.
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 09/62] tcg-s390: Mark R0 & R15 reserved. |
Date: |
Thu, 27 May 2010 13:45:51 -0700 |
Don't merely exclude them from the register allocation order.
Signed-off-by: Richard Henderson <address@hidden>
---
tcg/s390/tcg-target.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/tcg/s390/tcg-target.c b/tcg/s390/tcg-target.c
index eb3ca38..6988937 100644
--- a/tcg/s390/tcg-target.c
+++ b/tcg/s390/tcg-target.c
@@ -124,8 +124,7 @@ static const int tcg_target_reg_alloc_order[] = {
TCG_REG_R12,
TCG_REG_R13,
TCG_REG_R14,
- /* XXX many insns can't be used with R0, so we better avoid it for now */
- /* TCG_REG_R0 */
+ TCG_REG_R0,
TCG_REG_R1,
TCG_REG_R2,
TCG_REG_R3,
@@ -1304,6 +1303,10 @@ void tcg_target_init(TCGContext *s)
tcg_regset_set_reg(s->reserved_regs, TCG_REG_R13);
/* another temporary */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_R12);
+ /* XXX many insns can't be used with R0, so we better avoid it for now */
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_R0);
+ /* The stack pointer. */
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_R15);
tcg_add_target_add_op_defs(s390_op_defs);
}
--
1.7.0.1
- [Qemu-devel] [PATCH 02/62] add lost chunks from the original patch, (continued)
- [Qemu-devel] [PATCH 02/62] add lost chunks from the original patch, Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 03/62] tcg-s390: Only validate CPUTLBEntry for system mode., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 04/62] tcg-s390: Fix tcg_prepare_qemu_ldst for user mode., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 01/62] S390 TCG target, Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 06/62] s390x: Avoid _llseek., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 05/62] tcg-s390: Move opcode defines to tcg-target.c., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 07/62] s390x: Don't use a linker script for user-only., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 08/62] tcg-s390: Avoid set-but-not-used werrors., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 09/62] tcg-s390: Mark R0 & R15 reserved.,
Richard Henderson <=
- [Qemu-devel] [PATCH 11/62] tcg-s390: Move tcg_out_mov up and use it throughout., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 12/62] tcg-s390: Eliminate the S constraint., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 10/62] tcg-s390: R6 is a function argument register, Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 14/62] tcg-s390: Define tcg_target_reg_names., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 13/62] tcg-s390: Add -m64 and -march to s390x compilation., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 16/62] tcg-s390: Compute is_write in cpu_signal_handler., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 19/62] tcg-s390: Fixup qemu_ld/st opcodes., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 18/62] tcg-s390: Use matching constraints., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 20/62] tcg-s390: Implement setcond., Richard Henderson, 2010/05/27
- [Qemu-devel] [PATCH 15/62] tcg-s390: Update disassembler from binutils head., Richard Henderson, 2010/05/27