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tcg: Introduce get_jmp_target_addr

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Similar to the existing set_jmp_reset_offset.  Include the
rw->rx address space conversion done by arm and s390x, and
forgotten by mips and riscv.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-11-26 17:42:11 -08:00
parent b52a2c03b7
commit becc452a36
5 changed files with 13 additions and 4 deletions
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9
tcg/tcg.c
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@ -323,6 +323,15 @@ static void G_GNUC_UNUSED set_jmp_insn_offset(TCGContext *s, int which)
s->tb_jmp_insn_offset[which] = tcg_current_code_size(s);
}
static uintptr_t G_GNUC_UNUSED get_jmp_target_addr(TCGContext *s, int which)
{
/*
* Return the read-execute version of the pointer, for the benefit
* of any pc-relative addressing mode.
*/
return (uintptr_t)tcg_splitwx_to_rx(&s->tb_jmp_target_addr[which]);
}
/* Signal overflow, starting over with fewer guest insns. */
static G_NORETURN
void tcg_raise_tb_overflow(TCGContext *s)