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author | malc <malc@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-06-09 23:44:44 +0000 |
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committer | malc <malc@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-06-09 23:44:44 +0000 |
commit | 77b73de67632ed04acad4d816741ba27427cadac (patch) | |
tree | 857cfa71fc13442e2e7aa5759593c653e7c0287f /tcg/ppc | |
parent | 877d8ad78bfeade699af313e1f7793743dc48a08 (diff) | |
download | hqemu-77b73de67632ed04acad4d816741ba27427cadac.zip hqemu-77b73de67632ed04acad4d816741ba27427cadac.tar.gz |
Use rem/div[u]_i32 drop div[u]2_i32
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4722 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'tcg/ppc')
-rw-r--r-- | tcg/ppc/tcg-target.c | 138 | ||||
-rw-r--r-- | tcg/ppc/tcg-target.h | 1 |
2 files changed, 26 insertions, 113 deletions
diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c index 9b5c6d6..0fd8e4b 100644 --- a/tcg/ppc/tcg-target.c +++ b/tcg/ppc/tcg-target.c @@ -23,8 +23,6 @@ */ static uint8_t *tb_ret_addr; -static uint8_t *udiv_addr; -static uint8_t *div_addr; #define FAST_PATH #if TARGET_PHYS_ADDR_BITS <= 32 @@ -137,22 +135,6 @@ static const int tcg_target_callee_save_regs[] = { TCG_REG_R31 }; -static const int div_save_regs[] = { - TCG_REG_R4, - TCG_REG_R5, - TCG_REG_R7, - TCG_REG_R8, - TCG_REG_R9, - TCG_REG_R10, - TCG_REG_R11, - TCG_REG_R12, - TCG_REG_R13, /* should r13 be saved? */ - TCG_REG_R24, - TCG_REG_R25, - TCG_REG_R26, - TCG_REG_R27, -}; - static uint32_t reloc_pc24_val (void *pc, tcg_target_long target) { tcg_target_long disp; @@ -817,22 +799,6 @@ static void tcg_out_qemu_st (TCGContext *s, const TCGArg *args, int opc) #endif } -static uint64_t ppc_udiv_helper (uint64_t a, uint32_t b) -{ - uint64_t rem, quo; - quo = a / b; - rem = a % b; - return (rem << 32) | (uint32_t) quo; -} - -static uint64_t ppc_div_helper (int64_t a, int32_t b) -{ - int64_t rem, quo; - quo = a / b; - rem = a % b; - return (rem << 32) | (uint32_t) quo; -} - void tcg_target_qemu_prologue (TCGContext *s) { int i, j, frame_size; @@ -871,49 +837,6 @@ void tcg_target_qemu_prologue (TCGContext *s) tcg_out32 (s, MTSPR | RS (0) | LR); tcg_out32 (s, ADDI | RT (1) | RA (1) | frame_size); tcg_out32 (s, BCLR | BO_ALWAYS); - - /* div trampolines */ - for (j = 0; j < 2; ++j) { - tcg_target_long target; - - frame_size = 8 + ARRAY_SIZE (div_save_regs) * 4; - frame_size = (frame_size + 15) & ~15; - - if (j == 0) { - target = (tcg_target_long) ppc_udiv_helper; - udiv_addr = s->code_ptr; - } - else { - target = (tcg_target_long) ppc_div_helper; - div_addr = s->code_ptr; - } - - tcg_out32 (s, MFSPR | RT (0) | LR); - tcg_out32 (s, STWU | RS (1) | RA (1) | (-frame_size & 0xffff)); - for (i = 0; i < ARRAY_SIZE (div_save_regs); ++i) - tcg_out32 (s, (STW - | RS (div_save_regs[i]) - | RA (1) - | (i * 4 + 8) - ) - ); - tcg_out32 (s, STW | RS (0) | RA (1) | (frame_size - 4)); - tcg_out_mov (s, 4, 6); - tcg_out_b (s, LK, target); - tcg_out_mov (s, 6, 4); - - for (i = 0; i < ARRAY_SIZE (div_save_regs); ++i) - tcg_out32 (s, (LWZ - | RT (div_save_regs[i]) - | RA (1) - | (i * 4 + 8) - ) - ); - tcg_out32 (s, LWZ | RT (0) | RA (1) | (frame_size - 4)); - tcg_out32 (s, MTSPR | RS (0) | LR); - tcg_out32 (s, ADDI | RT (1) | RA (1) | frame_size); - tcg_out32 (s, BCLR | BO_ALWAYS); - } } static void tcg_out_ld (TCGContext *s, TCGType type, int ret, int arg1, @@ -1095,34 +1018,6 @@ static void tcg_out_brcond2(TCGContext *s, tcg_out_label(s, label_next, (tcg_target_long)s->code_ptr); } -static void tcg_out_div2 (TCGContext *s, int uns) -{ - void *label1_ptr, *label2_ptr; - - if (uns) - tcg_out32 (s, CMPLI | BF (7) | RA (3)); - else { - tcg_out32 (s, SRAWI | RS (4) | RA (0) | 31); - tcg_out32 (s, CMPL | BF (7) | RA (3) | RB (4)); - } - - label1_ptr = s->code_ptr; - tcg_out32 (s, BC | BI (7, CR_EQ) | BO_COND_TRUE); - - tcg_out_b (s, LK, (tcg_target_long) (uns ? udiv_addr : div_addr)); - - label2_ptr = s->code_ptr; - tcg_out32 (s, B); - - reloc_pc14 (label1_ptr, (tcg_target_long) s->code_ptr); - - tcg_out32 (s, (uns ? DIVWU : DIVW) | TAB (6, 4, 5)); - tcg_out32 (s, MULLW | TAB (0, 6, 5)); - tcg_out32 (s, SUBF | TAB (3, 0, 4)); - - reloc_pc24 (label2_ptr, (tcg_target_long) s->code_ptr); -} - static void tcg_out_op(TCGContext *s, int opc, const TCGArg *args, const int *const_args) { @@ -1301,6 +1196,27 @@ static void tcg_out_op(TCGContext *s, int opc, const TCGArg *args, else tcg_out32 (s, MULLW | TAB (args[0], args[1], args[2])); break; + + case INDEX_op_div_i32: + tcg_out32 (s, DIVW | TAB (args[0], args[1], args[2])); + break; + + case INDEX_op_divu_i32: + tcg_out32 (s, DIVWU | TAB (args[0], args[1], args[2])); + break; + + case INDEX_op_rem_i32: + tcg_out32 (s, DIVW | TAB (0, args[1], args[2])); + tcg_out32 (s, MULLW | TAB (0, 0, args[2])); + tcg_out32 (s, SUBF | TAB (args[0], 0, args[1])); + break; + + case INDEX_op_remu_i32: + tcg_out32 (s, DIVWU | TAB (0, args[1], args[2])); + tcg_out32 (s, MULLW | TAB (0, 0, args[2])); + tcg_out32 (s, SUBF | TAB (args[0], 0, args[1])); + break; + case INDEX_op_mulu2_i32: if (args[0] == args[2] || args[0] == args[3]) { tcg_out32 (s, MULLW | TAB (0, args[2], args[3])); @@ -1312,12 +1228,6 @@ static void tcg_out_op(TCGContext *s, int opc, const TCGArg *args, tcg_out32 (s, MULHWU | TAB (args[1], args[2], args[3])); } break; - case INDEX_op_div2_i32: - tcg_out_div2 (s, 0); - break; - case INDEX_op_divu2_i32: - tcg_out_div2 (s, 1); - break; case INDEX_op_shl_i32: if (const_args[2]) { @@ -1458,9 +1368,11 @@ static const TCGTargetOpDef ppc_op_defs[] = { { INDEX_op_add_i32, { "r", "r", "ri" } }, { INDEX_op_mul_i32, { "r", "r", "ri" } }, + { INDEX_op_div_i32, { "r", "r", "r" } }, + { INDEX_op_divu_i32, { "r", "r", "r" } }, + { INDEX_op_rem_i32, { "r", "r", "r" } }, + { INDEX_op_remu_i32, { "r", "r", "r" } }, { INDEX_op_mulu2_i32, { "r", "r", "r", "r" } }, - { INDEX_op_div2_i32, { "D", "A", "B", "1", "C" } }, - { INDEX_op_divu2_i32, { "D", "A", "B", "1", "C" } }, { INDEX_op_sub_i32, { "r", "r", "ri" } }, { INDEX_op_and_i32, { "r", "r", "ri" } }, { INDEX_op_or_i32, { "r", "r", "ri" } }, diff --git a/tcg/ppc/tcg-target.h b/tcg/ppc/tcg-target.h index e7a1c2a..db1b121 100644 --- a/tcg/ppc/tcg-target.h +++ b/tcg/ppc/tcg-target.h @@ -70,6 +70,7 @@ enum { /* optional instructions */ #define TCG_TARGET_HAS_neg_i32 +#define TCG_TARGET_HAS_div_i32 #define TCG_AREG0 TCG_REG_R27 #define TCG_AREG1 TCG_REG_R24 |