From ebc14537b3abd4a28360d25e42e3dbe1c9b2cb14 Mon Sep 17 00:00:00 2001 Message-Id: In-Reply-To: References: From: Blue Swirl Date: Sat, 14 May 2011 13:14:45 +0000 Subject: [PATCH 06/11] TCG/x86: use stack for TCG temps Use stack instead of temp_buf array in CPUState for TCG temps. Signed-off-by: Blue Swirl --- tcg/i386/tcg-target.c | 19 ++++++++++--------- 1 files changed, 10 insertions(+), 9 deletions(-) diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c index 01747f3..0e168ea 100644 --- a/tcg/i386/tcg-target.c +++ b/tcg/i386/tcg-target.c @@ -1918,19 +1918,22 @@ 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_set_frame(s, TCG_REG_ESP, 0, 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); /* jmp *tb. */ @@ -1979,6 +1982,4 @@ static void tcg_target_init(TCGContext *s) tcg_regset_set_reg(s->reserved_regs, TCG_REG_ESP); 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)); } -- 1.7.2.5