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tcg-ppc64: Add _noaddr functions for emitting forward branches

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... rather than open-coding this stuff through the file.

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-08-30 17:58:10 -07:00
parent fedee3e7fd
commit c7ca6a2b75
1 changed files with 16 additions and 10 deletions
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26
tcg/ppc64/tcg-target.c
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@ -204,6 +204,18 @@ static void reloc_pc14(void *pc, tcg_target_long target)
*(uint32_t *)pc = (*(uint32_t *)pc & ~0xfffc) | reloc_pc14_val(pc, target);
}
static inline void tcg_out_b_noaddr(TCGContext *s, int insn)
{
unsigned retrans = *(uint32_t *)s->code_ptr & 0x3fffffc;
tcg_out32(s, insn | retrans);
}
static inline void tcg_out_bc_noaddr(TCGContext *s, int insn)
{
unsigned retrans = *(uint32_t *)s->code_ptr & 0xfffc;
tcg_out32(s, insn | retrans);
}
static void patch_reloc(uint8_t *code_ptr, int type,
intptr_t value, intptr_t addend)
{
@ -1362,11 +1374,8 @@ static void tcg_out_bc(TCGContext *s, int bc, int label_index)
if (l->has_value) {
tcg_out32(s, bc | reloc_pc14_val(s->code_ptr, l->u.value));
} else {
uint16_t val = *(uint16_t *) &s->code_ptr[2];
/* Thanks to Andrzej Zaborowski */
tcg_out32(s, bc | (val & 0xfffc));
tcg_out_reloc(s, s->code_ptr - 4, R_PPC_REL14, label_index, 0);
tcg_out_reloc(s, s->code_ptr, R_PPC_REL14, label_index, 0);
tcg_out_bc_noaddr(s, bc);
}
}
@ -1466,11 +1475,8 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
if (l->has_value) {
tcg_out_b(s, 0, l->u.value);
} else {
uint32_t val = *(uint32_t *) s->code_ptr;
/* Thanks to Andrzej Zaborowski */
tcg_out32(s, B | (val & 0x3fffffc));
tcg_out_reloc(s, s->code_ptr - 4, R_PPC_REL24, args[0], 0);
tcg_out_reloc(s, s->code_ptr, R_PPC_REL24, args[0], 0);
tcg_out_b_noaddr(s, B);
}
}
break;