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tcg: Split out tcg_raise_tb_overflow

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Allow other places in tcg to restart with a smaller tb.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-01-31 23:29:26 -10:00
parent dc09f047ed
commit db6b7d0c69
1 changed files with 7 additions and 2 deletions
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9
tcg/tcg.c
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@ -346,6 +346,12 @@ static void set_jmp_reset_offset(TCGContext *s, int which)
s->tb_jmp_reset_offset[which] = tcg_current_code_size(s);
}
/* Signal overflow, starting over with fewer guest insns. */
static void QEMU_NORETURN tcg_raise_tb_overflow(TCGContext *s)
{
siglongjmp(s->jmp_trans, -2);
}
#define C_PFX1(P, A) P##A
#define C_PFX2(P, A, B) P##A##_##B
#define C_PFX3(P, A, B, C) P##A##_##B##_##C
@ -1310,8 +1316,7 @@ static TCGTemp *tcg_temp_alloc(TCGContext *s)
int n = s->nb_temps++;
if (n >= TCG_MAX_TEMPS) {
/* Signal overflow, starting over with fewer guest insns. */
siglongjmp(s->jmp_trans, -2);
tcg_raise_tb_overflow(s);
}
return memset(&s->temps[n], 0, sizeof(TCGTemp));
}