|
 |
5544c1 |
From 2cbc27913eb9eb7cdc4a41fc6efafccf3db7ebe6 Mon Sep 17 00:00:00 2001
|
|
|
5544c1 |
From: Richard Henderson <rth@twiddle.net>
|
|
|
5544c1 |
Date: Fri, 21 Sep 2012 11:00:23 -0700
|
|
|
5544c1 |
Subject: [PATCH] tcg-sparc: Preserve branch destinations during retranslation
|
|
|
5544c1 |
|
|
|
5544c1 |
Signed-off-by: Richard Henderson <rth@twiddle.net>
|
|
|
5544c1 |
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
|
|
|
5544c1 |
---
|
|
|
5544c1 |
tcg/sparc/tcg-target.c | 19 +++++++++++--------
|
|
|
5544c1 |
1 file changed, 11 insertions(+), 8 deletions(-)
|
|
|
5544c1 |
|
|
|
5544c1 |
diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c
|
|
|
5544c1 |
index 1db0c9d..876da4f 100644
|
|
|
5544c1 |
--- a/tcg/sparc/tcg-target.c
|
|
|
5544c1 |
+++ b/tcg/sparc/tcg-target.c
|
|
|
5544c1 |
@@ -488,30 +488,33 @@ static inline void tcg_out_nop(TCGContext *s)
|
|
|
5544c1 |
static void tcg_out_branch_i32(TCGContext *s, int opc, int label_index)
|
|
|
5544c1 |
{
|
|
|
5544c1 |
TCGLabel *l = &s->labels[label_index];
|
|
|
5544c1 |
+ uint32_t off22;
|
|
|
5544c1 |
|
|
|
5544c1 |
if (l->has_value) {
|
|
|
5544c1 |
- tcg_out32(s, (INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x2)
|
|
|
5544c1 |
- | INSN_OFF22(l->u.value - (unsigned long)s->code_ptr)));
|
|
|
5544c1 |
+ off22 = INSN_OFF22(l->u.value - (unsigned long)s->code_ptr);
|
|
|
5544c1 |
} else {
|
|
|
5544c1 |
+ /* Make sure to preserve destinations during retranslation. */
|
|
|
5544c1 |
+ off22 = *(uint32_t *)s->code_ptr & INSN_OFF22(-1);
|
|
|
5544c1 |
tcg_out_reloc(s, s->code_ptr, R_SPARC_WDISP22, label_index, 0);
|
|
|
5544c1 |
- tcg_out32(s, (INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x2) | 0));
|
|
|
5544c1 |
}
|
|
|
5544c1 |
+ tcg_out32(s, INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x2) | off22);
|
|
|
5544c1 |
}
|
|
|
5544c1 |
|
|
|
5544c1 |
#if TCG_TARGET_REG_BITS == 64
|
|
|
5544c1 |
static void tcg_out_branch_i64(TCGContext *s, int opc, int label_index)
|
|
|
5544c1 |
{
|
|
|
5544c1 |
TCGLabel *l = &s->labels[label_index];
|
|
|
5544c1 |
+ uint32_t off19;
|
|
|
5544c1 |
|
|
|
5544c1 |
if (l->has_value) {
|
|
|
5544c1 |
- tcg_out32(s, (INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x1) |
|
|
|
5544c1 |
- (0x5 << 19) |
|
|
|
5544c1 |
- INSN_OFF19(l->u.value - (unsigned long)s->code_ptr)));
|
|
|
5544c1 |
+ off19 = INSN_OFF19(l->u.value - (unsigned long)s->code_ptr);
|
|
|
5544c1 |
} else {
|
|
|
5544c1 |
+ /* Make sure to preserve destinations during retranslation. */
|
|
|
5544c1 |
+ off19 = *(uint32_t *)s->code_ptr & INSN_OFF19(-1);
|
|
|
5544c1 |
tcg_out_reloc(s, s->code_ptr, R_SPARC_WDISP19, label_index, 0);
|
|
|
5544c1 |
- tcg_out32(s, (INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x1) |
|
|
|
5544c1 |
- (0x5 << 19) | 0));
|
|
|
5544c1 |
}
|
|
|
5544c1 |
+ tcg_out32(s, (INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x1) |
|
|
|
5544c1 |
+ (0x5 << 19) | off19));
|
|
|
5544c1 |
}
|
|
|
5544c1 |
#endif
|
|
|
5544c1 |
|
|
|
5544c1 |
--
|
|
|
5544c1 |
1.7.12.1
|
|
|
5544c1 |
|