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tcg: Restart TB generation after out-of-line ldst overflow

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This is part c of relocation overflow handling.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2019-04-21 14:51:00 -07:00
parent 1768987b73
commit aeee05f53a
9 changed files with 75 additions and 44 deletions
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16
tcg/arm/tcg-target.inc.c
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@ -1372,15 +1372,16 @@ static void add_qemu_ldst_label(TCGContext *s, bool is_ld, TCGMemOpIdx oi,
label->label_ptr[0] = label_ptr;
}
static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
{
TCGReg argreg, datalo, datahi;
TCGMemOpIdx oi = lb->oi;
TCGMemOp opc = get_memop(oi);
void *func;
bool ok = reloc_pc24(lb->label_ptr[0], s->code_ptr);
tcg_debug_assert(ok);
if (!reloc_pc24(lb->label_ptr[0], s->code_ptr)) {
return false;
}
argreg = tcg_out_arg_reg32(s, TCG_REG_R0, TCG_AREG0);
if (TARGET_LONG_BITS == 64) {
@ -1432,16 +1433,18 @@ static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
}
tcg_out_goto(s, COND_AL, lb->raddr);
return true;
}
static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
{
TCGReg argreg, datalo, datahi;
TCGMemOpIdx oi = lb->oi;
TCGMemOp opc = get_memop(oi);
bool ok = reloc_pc24(lb->label_ptr[0], s->code_ptr);
tcg_debug_assert(ok);
if (!reloc_pc24(lb->label_ptr[0], s->code_ptr)) {
return false;
}
argreg = TCG_REG_R0;
argreg = tcg_out_arg_reg32(s, argreg, TCG_AREG0);
@ -1474,6 +1477,7 @@ static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
/* Tail-call to the helper, which will return to the fast path. */
tcg_out_goto(s, COND_AL, qemu_st_helpers[opc & (MO_BSWAP | MO_SIZE)]);
return true;
}
#endif /* SOFTMMU */