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tcg-sparc: Implement setcond, setcond2.

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Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson 2010-02-15 21:22:59 -08:00 committed by Blue Swirl
parent 1c086220a6
commit dbfe80e1ea
1 changed files with 127 additions and 0 deletions
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127
tcg/sparc/tcg-target.c
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@ -194,6 +194,7 @@ static inline int tcg_target_const_match(tcg_target_long val,
#define INSN_RS2(x) (x)
#define INSN_ASI(x) ((x) << 5)
#define INSN_IMM11(x) ((1 << 13) | ((x) & 0x7ff))
#define INSN_IMM13(x) ((1 << 13) | ((x) & 0x1fff))
#define INSN_OFF19(x) (((x) >> 2) & 0x07ffff)
#define INSN_OFF22(x) (((x) >> 2) & 0x3fffff)
@ -217,6 +218,9 @@ static inline int tcg_target_const_match(tcg_target_long val,
#define COND_VC 0xf
#define BA (INSN_OP(0) | INSN_COND(COND_A, 0) | INSN_OP2(0x2))
#define MOVCC_ICC (1 << 18)
#define MOVCC_XCC (1 << 18 | 1 << 12)
#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))
@ -233,6 +237,7 @@ static inline int tcg_target_const_match(tcg_target_long val,
#define ARITH_MULX (INSN_OP(2) | INSN_OP3(0x09))
#define ARITH_UDIVX (INSN_OP(2) | INSN_OP3(0x0d))
#define ARITH_SDIVX (INSN_OP(2) | INSN_OP3(0x2d))
#define ARITH_MOVCC (INSN_OP(2) | INSN_OP3(0x2c))
#define SHIFT_SLL (INSN_OP(2) | INSN_OP3(0x25))
#define SHIFT_SRL (INSN_OP(2) | INSN_OP3(0x26))
@ -580,6 +585,109 @@ static void tcg_out_brcond2_i32(TCGContext *s, int cond,
}
#endif
static void tcg_out_setcond_i32(TCGContext *s, int cond, TCGArg ret,
TCGArg c1, TCGArg c2, int c2const)
{
TCGArg t;
/* For 32-bit comparisons, we can play games with ADDX/SUBX. */
switch (cond) {
case TCG_COND_EQ:
case TCG_COND_NE:
if (c2 != 0) {
tcg_out_arithc(s, ret, c1, c2, c2const, ARITH_XOR);
}
c1 = TCG_REG_G0, c2 = ret, c2const = 0;
cond = (cond == TCG_COND_EQ ? TCG_COND_LEU : TCG_COND_LTU);
break;
case TCG_COND_GTU:
case TCG_COND_GEU:
if (c2const && c2 != 0) {
tcg_out_movi_imm13(s, TCG_REG_I5, c2);
c2 = TCG_REG_I5;
}
t = c1, c1 = c2, c2 = t, c2const = 0;
cond = tcg_swap_cond(cond);
break;
case TCG_COND_LTU:
case TCG_COND_LEU:
break;
default:
tcg_out_cmp(s, c1, c2, c2const);
#if defined(__sparc_v9__) || defined(__sparc_v8plus__)
tcg_out_movi_imm13(s, ret, 0);
tcg_out32 (s, ARITH_MOVCC | INSN_RD(ret)
| INSN_RS1(tcg_cond_to_bcond[cond])
| MOVCC_ICC | INSN_IMM11(1));
#else
t = gen_new_label();
tcg_out_branch_i32(s, INSN_COND(tcg_cond_to_bcond[cond], 1), t);
tcg_out_movi_imm13(s, ret, 1);
tcg_out_movi_imm13(s, ret, 0);
tcg_out_label(s, t, (tcg_target_long)s->code_ptr);
#endif
return;
}
tcg_out_cmp(s, c1, c2, c2const);
if (cond == TCG_COND_LTU) {
tcg_out_arithi(s, ret, TCG_REG_G0, 0, ARITH_ADDX);
} else {
tcg_out_arithi(s, ret, TCG_REG_G0, -1, ARITH_SUBX);
}
}
#if TCG_TARGET_REG_BITS == 64
static void tcg_out_setcond_i64(TCGContext *s, int cond, TCGArg ret,
TCGArg c1, TCGArg c2, int c2const)
{
tcg_out_cmp(s, c1, c2, c2const);
tcg_out_movi_imm13(s, ret, 0);
tcg_out32 (s, ARITH_MOVCC | INSN_RD(ret)
| INSN_RS1(tcg_cond_to_bcond[cond])
| MOVCC_XCC | INSN_IMM11(1));
}
#else
static void tcg_out_setcond2_i32(TCGContext *s, int cond, TCGArg ret,
TCGArg al, TCGArg ah,
TCGArg bl, int blconst,
TCGArg bh, int bhconst)
{
int lab;
switch (cond) {
case TCG_COND_EQ:
tcg_out_setcond_i32(s, TCG_COND_EQ, TCG_REG_I5, al, bl, blconst);
tcg_out_setcond_i32(s, TCG_COND_EQ, ret, ah, bh, bhconst);
tcg_out_arith(s, ret, ret, TCG_REG_I5, ARITH_AND);
break;
case TCG_COND_NE:
tcg_out_setcond_i32(s, TCG_COND_NE, TCG_REG_I5, al, al, blconst);
tcg_out_setcond_i32(s, TCG_COND_NE, ret, ah, bh, bhconst);
tcg_out_arith(s, ret, ret, TCG_REG_I5, ARITH_OR);
break;
default:
lab = gen_new_label();
tcg_out_cmp(s, ah, bh, bhconst);
tcg_out_branch_i32(s, INSN_COND(tcg_cond_to_bcond[cond], 1), lab);
tcg_out_movi_imm13(s, ret, 1);
tcg_out_branch_i32(s, INSN_COND(COND_NE, 1), lab);
tcg_out_movi_imm13(s, ret, 0);
tcg_out_setcond_i32(s, tcg_unsigned_cond(cond), ret, al, bl, blconst);
tcg_out_label(s, lab, (tcg_target_long)s->code_ptr);
break;
}
}
#endif
/* Generate global QEMU prologue and epilogue code */
void tcg_target_qemu_prologue(TCGContext *s)
{
@ -1146,12 +1254,22 @@ static inline void tcg_out_op(TCGContext *s, int opc, const TCGArg *args,
tcg_out_brcond_i32(s, args[2], args[0], args[1], const_args[1],
args[3]);
break;
case INDEX_op_setcond_i32:
tcg_out_setcond_i32(s, args[3], args[0], args[1],
args[2], const_args[2]);
break;
#if TCG_TARGET_REG_BITS == 32
case INDEX_op_brcond2_i32:
tcg_out_brcond2_i32(s, args[4], args[0], args[1],
args[2], const_args[2],
args[3], const_args[3], args[5]);
break;
case INDEX_op_setcond2_i32:
tcg_out_setcond2_i32(s, args[5], args[0], args[1], args[2],
args[3], const_args[3],
args[4], const_args[4]);
break;
case INDEX_op_add2_i32:
tcg_out_arithc(s, args[0], args[2], args[4], const_args[4],
ARITH_ADDCC);
@ -1257,6 +1375,11 @@ static inline void tcg_out_op(TCGContext *s, int opc, const TCGArg *args,
tcg_out_brcond_i64(s, args[2], args[0], args[1], const_args[1],
args[3]);
break;
case INDEX_op_setcond_i64:
tcg_out_setcond_i64(s, args[3], args[0], args[1],
args[2], const_args[2]);
break;
case INDEX_op_qemu_ld64:
tcg_out_qemu_ld(s, args, 3);
break;
@ -1309,8 +1432,11 @@ static const TCGTargetOpDef sparc_op_defs[] = {
{ INDEX_op_sar_i32, { "r", "r", "rJ" } },
{ INDEX_op_brcond_i32, { "r", "rJ" } },
{ INDEX_op_setcond_i32, { "r", "r", "rJ" } },
#if TCG_TARGET_REG_BITS == 32
{ INDEX_op_brcond2_i32, { "r", "r", "rJ", "rJ" } },
{ INDEX_op_setcond2_i32, { "r", "r", "r", "rJ", "rJ" } },
{ INDEX_op_add2_i32, { "r", "r", "r", "r", "rJ", "rJ" } },
{ INDEX_op_sub2_i32, { "r", "r", "r", "r", "rJ", "rJ" } },
{ INDEX_op_mulu2_i32, { "r", "r", "r", "rJ" } },
@ -1362,6 +1488,7 @@ static const TCGTargetOpDef sparc_op_defs[] = {
{ INDEX_op_ext32u_i64, { "r", "ri" } },
{ INDEX_op_brcond_i64, { "r", "rJ" } },
{ INDEX_op_setcond_i64, { "r", "r", "rJ" } },
#endif
{ -1 },
};