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tcg: Introduce set_jmp_insn_offset

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Similar to the existing set_jmp_reset_offset.  Move any assert for
TCG_TARGET_HAS_direct_jump into the new function (which now cannot
be build-time).  Will be unused if TCG_TARGET_HAS_direct_jump is
constant 0, but we can't test for constant in the preprocessor,
so just mark it G_GNUC_UNUSED.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-11-26 15:18:44 -08:00
parent 7f83167c61
commit b52a2c03b7
7 changed files with 19 additions and 14 deletions
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7
tcg/ppc/tcg-target.c.inc
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@ -2630,20 +2630,19 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
switch (opc) {
case INDEX_op_goto_tb:
qemu_build_assert(TCG_TARGET_HAS_direct_jump);
/* Direct jump. */
if (TCG_TARGET_REG_BITS == 64) {
/* Ensure the next insns are 8 or 16-byte aligned. */
while ((uintptr_t)s->code_ptr & (have_isa_2_07 ? 15 : 7)) {
tcg_out32(s, NOP);
}
s->tb_jmp_insn_offset[args[0]] = tcg_current_code_size(s);
set_jmp_insn_offset(s, args[0]);
tcg_out32(s, ADDIS | TAI(TCG_REG_TB, TCG_REG_TB, 0));
tcg_out32(s, ADDI | TAI(TCG_REG_TB, TCG_REG_TB, 0));
} else {
s->tb_jmp_insn_offset[args[0]] = tcg_current_code_size(s);
set_jmp_insn_offset(s, args[0]);
tcg_out32(s, B);
s->tb_jmp_reset_offset[args[0]] = tcg_current_code_size(s);
set_jmp_reset_offset(s, args[0]);
break;
}
tcg_out32(s, MTSPR | RS(TCG_REG_TB) | CTR);