From e4a7d5e88c361040a64a0f298d666a273dc6db85 Mon Sep 17 00:00:00 2001 From: Aurelien Jarno Date: Fri, 9 Apr 2010 20:52:48 +0200 Subject: tcg/arm: explicitely list clobbered/reserved regs Instead of writing very compact code, declare all registers that are clobbered or reserved one by one. This makes the code easier to read. Also declare all the 16 registers to TCG, and mark pc as reserved. Signed-off-by: Aurelien Jarno --- tcg/arm/tcg-target.c | 13 +++++++++---- tcg/arm/tcg-target.h | 3 ++- 2 files changed, 11 insertions(+), 5 deletions(-) (limited to 'tcg') diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c index e86ed9aeea..35f6c473b1 100644 --- a/tcg/arm/tcg-target.c +++ b/tcg/arm/tcg-target.c @@ -39,6 +39,7 @@ static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { "%r12", "%r13", "%r14", + "%pc", }; #endif @@ -1580,15 +1581,19 @@ void tcg_target_init(TCGContext *s) tcg_abort(); #endif - tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, - ((2 << TCG_REG_R14) - 1) & ~(1 << TCG_REG_R8)); + tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffff); tcg_regset_set32(tcg_target_call_clobber_regs, 0, - ((2 << TCG_REG_R3) - 1) | - (1 << TCG_REG_R12) | (1 << TCG_REG_R14)); + (1 << TCG_REG_R0) | + (1 << TCG_REG_R1) | + (1 << TCG_REG_R2) | + (1 << TCG_REG_R3) | + (1 << TCG_REG_R12) | + (1 << TCG_REG_R14)); tcg_regset_clear(s->reserved_regs); tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK); tcg_regset_set_reg(s->reserved_regs, TCG_REG_R8); + tcg_regset_set_reg(s->reserved_regs, TCG_REG_PC); tcg_add_target_add_op_defs(arm_op_defs); } diff --git a/tcg/arm/tcg-target.h b/tcg/arm/tcg-target.h index 6d58de81b0..a0027b5781 100644 --- a/tcg/arm/tcg-target.h +++ b/tcg/arm/tcg-target.h @@ -44,9 +44,10 @@ enum { TCG_REG_R12, TCG_REG_R13, TCG_REG_R14, + TCG_REG_PC, }; -#define TCG_TARGET_NB_REGS 15 +#define TCG_TARGET_NB_REGS 16 #define TCG_CT_CONST_ARM 0x100 -- cgit v1.2.3