david.venhoff/QEMU-Nyx-fork
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tcg-sparc: Emit BPr insns for brcond_i64

Browse Source 
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson 2012-10-10 09:02:46 -07:00 committed by Blue Swirl
parent 345ce423dd
commit ab1339b9b4
1 changed files with 47 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
tcg/sparc/tcg-target.c
View File

@ -126,6 +126,7 @@ static const int tcg_target_call_oarg_regs[] = {
#define INSN_IMM11(x) ((1 << 13) | ((x) & 0x7ff)) #define INSN_IMM11(x) ((1 << 13) | ((x) & 0x7ff))
#define INSN_IMM13(x) ((1 << 13) | ((x) & 0x1fff)) #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_OFF19(x) (((x) >> 2) & 0x07ffff)
#define INSN_COND(x) ((x) << 25) #define INSN_COND(x) ((x) << 25)
@ -147,6 +148,13 @@ static const int tcg_target_call_oarg_regs[] = {
#define COND_VC 0xf #define COND_VC 0xf
#define BA (INSN_OP(0) | INSN_COND(COND_A) | INSN_OP2(0x2)) #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_ICC (1 << 18)
#define MOVCC_XCC (1 << 18 | 1 << 12) #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_PN 0
#define BPCC_A (1 << 29) #define BPCC_A (1 << 29)
#define BPR_PT BPCC_PT
#define ARITH_ADD (INSN_OP(2) | INSN_OP3(0x00)) #define ARITH_ADD (INSN_OP(2) | INSN_OP3(0x00))
#define ARITH_ADDCC (INSN_OP(2) | INSN_OP3(0x10)) #define ARITH_ADDCC (INSN_OP(2) | INSN_OP3(0x10))
#define ARITH_AND (INSN_OP(2) | INSN_OP3(0x01)) #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; *(uint32_t *)code_ptr = value;
break; 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: case R_SPARC_WDISP19:
value -= (long)code_ptr; value -= (long)code_ptr;
if (!check_fit_tl(value >> 2, 19)) { if (!check_fit_tl(value >> 2, 19)) {
@ -502,6 +522,15 @@ static const uint8_t tcg_cond_to_bcond[] = {
[TCG_COND_GTU] = COND_GU, [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) 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); 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, static void tcg_out_brcond_i64(TCGContext *s, TCGCond cond, TCGArg arg1,
TCGArg arg2, int const_arg2, int label) TCGArg arg2, int const_arg2, int 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_cmp(s, arg1, arg2, const_arg2);
tcg_out_bpcc(s, tcg_cond_to_bcond[cond], BPCC_XCC | BPCC_PT, label); tcg_out_bpcc(s, tcg_cond_to_bcond[cond], BPCC_XCC | BPCC_PT, label);
}
tcg_out_nop(s); tcg_out_nop(s);
} }