diff options
Diffstat (limited to 'tcg/sparc/tcg-target.c')
| -rw-r--r-- | tcg/sparc/tcg-target.c | 49 |
1 files changed, 47 insertions, 2 deletions
diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c index ab47c98378..3b18fceb6f 100644 --- a/tcg/sparc/tcg-target.c +++ b/tcg/sparc/tcg-target.c @@ -126,6 +126,7 @@ static const int tcg_target_call_oarg_regs[] = { #define INSN_IMM11(x) ((1 << 13) | ((x) & 0x7ff)) #define INSN_IMM13(x) ((1 << 13) | ((x) & 0x1fff)) +#define INSN_OFF16(x) ((((x) >> 2) & 0x3fff) | ((((x) >> 16) & 3) << 20)) #define INSN_OFF19(x) (((x) >> 2) & 0x07ffff) #define INSN_COND(x) ((x) << 25) @@ -147,6 +148,13 @@ static const int tcg_target_call_oarg_regs[] = { #define COND_VC 0xf #define BA (INSN_OP(0) | INSN_COND(COND_A) | INSN_OP2(0x2)) +#define RCOND_Z 1 +#define RCOND_LEZ 2 +#define RCOND_LZ 3 +#define RCOND_NZ 5 +#define RCOND_GZ 6 +#define RCOND_GEZ 7 + #define MOVCC_ICC (1 << 18) #define MOVCC_XCC (1 << 18 | 1 << 12) @@ -156,6 +164,8 @@ static const int tcg_target_call_oarg_regs[] = { #define BPCC_PN 0 #define BPCC_A (1 << 29) +#define BPR_PT BPCC_PT + #define ARITH_ADD (INSN_OP(2) | INSN_OP3(0x00)) #define ARITH_ADDCC (INSN_OP(2) | INSN_OP3(0x10)) #define ARITH_AND (INSN_OP(2) | INSN_OP3(0x01)) @@ -251,6 +261,16 @@ static void patch_reloc(uint8_t *code_ptr, int type, } *(uint32_t *)code_ptr = value; break; + case R_SPARC_WDISP16: + value -= (long)code_ptr; + if (!check_fit_tl(value >> 2, 16)) { + tcg_abort(); + } + insn = *(uint32_t *)code_ptr; + insn &= ~INSN_OFF16(-1); + insn |= INSN_OFF16(value); + *(uint32_t *)code_ptr = insn; + break; case R_SPARC_WDISP19: value -= (long)code_ptr; if (!check_fit_tl(value >> 2, 19)) { @@ -502,6 +522,15 @@ static const uint8_t tcg_cond_to_bcond[] = { [TCG_COND_GTU] = COND_GU, }; +static const uint8_t tcg_cond_to_rcond[] = { + [TCG_COND_EQ] = RCOND_Z, + [TCG_COND_NE] = RCOND_NZ, + [TCG_COND_LT] = RCOND_LZ, + [TCG_COND_GT] = RCOND_GZ, + [TCG_COND_LE] = RCOND_LEZ, + [TCG_COND_GE] = RCOND_GEZ +}; + static void tcg_out_bpcc0(TCGContext *s, int scond, int flags, int off19) { tcg_out32(s, INSN_OP(0) | INSN_OP2(1) | INSN_COND(scond) | flags | off19); @@ -555,8 +584,24 @@ static void tcg_out_movcond_i32(TCGContext *s, TCGCond cond, TCGArg ret, static void tcg_out_brcond_i64(TCGContext *s, TCGCond cond, TCGArg arg1, TCGArg arg2, int const_arg2, int label) { - tcg_out_cmp(s, arg1, arg2, const_arg2); - tcg_out_bpcc(s, tcg_cond_to_bcond[cond], BPCC_XCC | BPCC_PT, label); + /* For 64-bit signed comparisons vs zero, we can avoid the compare. */ + if (arg2 == 0 && !is_unsigned_cond(cond)) { + TCGLabel *l = &s->labels[label]; + int off16; + + if (l->has_value) { + off16 = INSN_OFF16(l->u.value - (unsigned long)s->code_ptr); + } else { + /* Make sure to preserve destinations during retranslation. */ + off16 = *(uint32_t *)s->code_ptr & INSN_OFF16(-1); + tcg_out_reloc(s, s->code_ptr, R_SPARC_WDISP16, label, 0); + } + tcg_out32(s, INSN_OP(0) | INSN_OP2(3) | BPR_PT | INSN_RS1(arg1) + | INSN_COND(tcg_cond_to_rcond[cond]) | off16); + } else { + tcg_out_cmp(s, arg1, arg2, const_arg2); + tcg_out_bpcc(s, tcg_cond_to_bcond[cond], BPCC_XCC | BPCC_PT, label); + } tcg_out_nop(s); } |