diff options
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/tci/tcg-target.c | 12 | ||||
| -rw-r--r-- | tcg/tci/tcg-target.h | 8 |
2 files changed, 13 insertions, 7 deletions
diff --git a/tcg/tci/tcg-target.c b/tcg/tci/tcg-target.c index b096a84805..d1241b5692 100644 --- a/tcg/tci/tcg-target.c +++ b/tcg/tci/tcg-target.c @@ -40,11 +40,6 @@ /* Bitfield n...m (in 32 bit value). */ #define BITS(n, m) (((0xffffffffU << (31 - n)) >> (31 - n + m)) << m) -/* Used for function call generation. */ -#define TCG_REG_CALL_STACK TCG_REG_R4 -#define TCG_TARGET_STACK_ALIGN 16 -#define TCG_TARGET_CALL_STACK_OFFSET 0 - /* Macros used in tcg_target_op_defs. */ #define R "r" #define RI "ri" @@ -901,10 +896,15 @@ static void tcg_target_init(TCGContext *s) /* TODO: Which registers should be set here? */ tcg_regset_set32(tcg_target_call_clobber_regs, 0, BIT(TCG_TARGET_NB_REGS) - 1); + tcg_regset_clear(s->reserved_regs); tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK); tcg_add_target_add_op_defs(tcg_target_op_defs); - tcg_set_frame(s, TCG_AREG0, offsetof(CPUArchState, temp_buf), + + /* We use negative offsets from "sp" so that we can distinguish + stores that might pretend to be call arguments. */ + tcg_set_frame(s, TCG_REG_CALL_STACK, + -CPU_TEMP_BUF_NLONGS * sizeof(long), CPU_TEMP_BUF_NLONGS * sizeof(long)); } diff --git a/tcg/tci/tcg-target.h b/tcg/tci/tcg-target.h index 1f17576f54..0395bbb8e4 100644 --- a/tcg/tci/tcg-target.h +++ b/tcg/tci/tcg-target.h @@ -127,7 +127,6 @@ typedef enum { TCG_REG_R5, TCG_REG_R6, TCG_REG_R7, - TCG_AREG0 = TCG_REG_R7, #if TCG_TARGET_NB_REGS >= 16 TCG_REG_R8, TCG_REG_R9, @@ -160,6 +159,13 @@ typedef enum { TCG_CONST = UINT8_MAX } TCGReg; +#define TCG_AREG0 (TCG_TARGET_NB_REGS - 2) + +/* Used for function call generation. */ +#define TCG_REG_CALL_STACK (TCG_TARGET_NB_REGS - 1) +#define TCG_TARGET_CALL_STACK_OFFSET 0 +#define TCG_TARGET_STACK_ALIGN 16 + void tci_disas(uint8_t opc); tcg_target_ulong tcg_qemu_tb_exec(CPUArchState *env, uint8_t *tb_ptr); |