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tcg: Introduce tcg_out_movext

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This is common code in most qemu_{ld,st} slow paths, extending the
input value for the store helper data argument or extending the
return value from the load helper.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-04-05 21:16:28 -07:00
parent b8b94ac675
commit b3dfd5fc18
9 changed files with 103 additions and 168 deletions
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8
tcg/aarch64/tcg-target.c.inc
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@ -1620,7 +1620,6 @@ static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
{
MemOpIdx oi = lb->oi;
MemOp opc = get_memop(oi);
MemOp size = opc & MO_SIZE;
if (!reloc_pc19(lb->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) {
return false;
@ -1631,12 +1630,9 @@ static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_X2, oi);
tcg_out_adr(s, TCG_REG_X3, lb->raddr);
tcg_out_call_int(s, qemu_ld_helpers[opc & MO_SIZE]);
if (opc & MO_SIGN) {
tcg_out_sxt(s, lb->type, size, lb->datalo_reg, TCG_REG_X0);
} else {
tcg_out_mov(s, size == MO_64, lb->datalo_reg, TCG_REG_X0);
}
tcg_out_movext(s, lb->type, lb->datalo_reg,
TCG_TYPE_REG, opc & MO_SSIZE, TCG_REG_X0);
tcg_out_goto(s, lb->raddr);
return true;
}