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| author | Richard Henderson <rth@twiddle.net> | 2012-09-21 11:00:23 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2012-09-21 22:02:21 +0200 |
| commit | f4bf0b912e780978a37979f7a9fad40f99aa2241 (patch) | |
| tree | b199860e5dc89c3c7de53b13d8764db5f8109a50 | |
| parent | 5bbd2cae8e087b4329e17c3f44439096e4c3ec6a (diff) | |
| download | qemu-f4bf0b912e780978a37979f7a9fad40f99aa2241.zip qemu-f4bf0b912e780978a37979f7a9fad40f99aa2241.tar.gz qemu-f4bf0b912e780978a37979f7a9fad40f99aa2241.tar.bz2 | |
tcg-sparc: Preserve branch destinations during retranslation
Signed-off-by: Richard Henderson <rth@twiddle.net>
| -rw-r--r-- | tcg/sparc/tcg-target.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c index 1db0c9d..876da4f 100644 --- a/tcg/sparc/tcg-target.c +++ b/tcg/sparc/tcg-target.c @@ -488,30 +488,33 @@ static inline void tcg_out_nop(TCGContext *s) static void tcg_out_branch_i32(TCGContext *s, int opc, int label_index) { TCGLabel *l = &s->labels[label_index]; + uint32_t off22; if (l->has_value) { - tcg_out32(s, (INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x2) - | INSN_OFF22(l->u.value - (unsigned long)s->code_ptr))); + off22 = INSN_OFF22(l->u.value - (unsigned long)s->code_ptr); } else { + /* Make sure to preserve destinations during retranslation. */ + off22 = *(uint32_t *)s->code_ptr & INSN_OFF22(-1); tcg_out_reloc(s, s->code_ptr, R_SPARC_WDISP22, label_index, 0); - tcg_out32(s, (INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x2) | 0)); } + tcg_out32(s, INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x2) | off22); } #if TCG_TARGET_REG_BITS == 64 static void tcg_out_branch_i64(TCGContext *s, int opc, int label_index) { TCGLabel *l = &s->labels[label_index]; + uint32_t off19; if (l->has_value) { - tcg_out32(s, (INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x1) | - (0x5 << 19) | - INSN_OFF19(l->u.value - (unsigned long)s->code_ptr))); + off19 = INSN_OFF19(l->u.value - (unsigned long)s->code_ptr); } else { + /* Make sure to preserve destinations during retranslation. */ + off19 = *(uint32_t *)s->code_ptr & INSN_OFF19(-1); tcg_out_reloc(s, s->code_ptr, R_SPARC_WDISP19, label_index, 0); - tcg_out32(s, (INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x1) | - (0x5 << 19) | 0)); } + tcg_out32(s, (INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x1) | + (0x5 << 19) | off19)); } #endif |