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| author | Blue Swirl <blauwirbel@gmail.com> | 2011-05-14 13:14:45 +0000 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2011-06-26 18:25:51 +0000 |
| commit | ac0275dcfea6ec21705b30fe83c21686871e9d70 (patch) | |
| tree | f8d2ed588f9ec7e41690229eaa9e743cef52aae9 /tcg/i386 | |
| parent | e83c80f7180fc70570c2592ee5af5835e2a6942b (diff) | |
| download | qemu-ac0275dcfea6ec21705b30fe83c21686871e9d70.tar.gz | |
TCG/x86: use stack for TCG temps
Use stack instead of temp_buf array in CPUState for TCG
temps.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'tcg/i386')
| -rw-r--r-- | tcg/i386/tcg-target.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c index 4c29cedff1..7529677fe2 100644 --- a/tcg/i386/tcg-target.c +++ b/tcg/i386/tcg-target.c @@ -1918,20 +1918,24 @@ static void tcg_target_qemu_prologue(TCGContext *s) /* TB prologue */ - /* Save all callee saved registers. */ - for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) { - tcg_out_push(s, tcg_target_callee_save_regs[i]); - } - - /* Reserve some stack space. */ + /* Reserve some stack space, also for TCG temps. */ push_size = 1 + ARRAY_SIZE(tcg_target_callee_save_regs); push_size *= TCG_TARGET_REG_BITS / 8; - frame_size = push_size + TCG_STATIC_CALL_ARGS_SIZE; + frame_size = push_size + TCG_STATIC_CALL_ARGS_SIZE + + CPU_TEMP_BUF_NLONGS * sizeof(long); frame_size = (frame_size + TCG_TARGET_STACK_ALIGN - 1) & ~(TCG_TARGET_STACK_ALIGN - 1); stack_addend = frame_size - push_size; - tcg_out_addi(s, TCG_REG_CALL_STACK, -stack_addend); + tcg_set_frame(s, TCG_REG_CALL_STACK, TCG_STATIC_CALL_ARGS_SIZE, + CPU_TEMP_BUF_NLONGS * sizeof(long)); + + /* Save all callee saved registers. */ + for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) { + tcg_out_push(s, tcg_target_callee_save_regs[i]); + } + + tcg_out_addi(s, TCG_REG_ESP, -stack_addend); tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]); @@ -1981,6 +1985,4 @@ static void tcg_target_init(TCGContext *s) tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK); tcg_add_target_add_op_defs(x86_op_defs); - tcg_set_frame(s, TCG_AREG0, offsetof(CPUState, temp_buf), - CPU_TEMP_BUF_NLONGS * sizeof(long)); } |