motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-07 17:53:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

tcg: Introduce tcg_out_movext

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

63
tcg/tcg.c
View file

@ -352,6 +352,69 @@ void tcg_raise_tb_overflow(TCGContext *s)
siglongjmp(s->jmp_trans, -2);
}
/**
* tcg_out_movext -- move and extend
* @s: tcg context
* @dst_type: integral type for destination
* @dst: destination register
* @src_type: integral type for source
* @src_ext: extension to apply to source
* @src: source register
*
* Move or extend @src into @dst, depending on @src_ext and the types.
*/
static void __attribute__((unused))
tcg_out_movext(TCGContext *s, TCGType dst_type, TCGReg dst,
TCGType src_type, MemOp src_ext, TCGReg src)
{
switch (src_ext) {
case MO_UB:
tcg_out_ext8u(s, dst, src);
break;
case MO_SB:
tcg_out_ext8s(s, dst_type, dst, src);
break;
case MO_UW:
tcg_out_ext16u(s, dst, src);
break;
case MO_SW:
tcg_out_ext16s(s, dst_type, dst, src);
break;
case MO_UL:
case MO_SL:
if (dst_type == TCG_TYPE_I32) {
if (src_type == TCG_TYPE_I32) {
tcg_out_mov(s, TCG_TYPE_I32, dst, src);
} else {
tcg_out_extrl_i64_i32(s, dst, src);
}
} else if (src_type == TCG_TYPE_I32) {
if (src_ext & MO_SIGN) {
tcg_out_exts_i32_i64(s, dst, src);
} else {
tcg_out_extu_i32_i64(s, dst, src);
}
} else {
if (src_ext & MO_SIGN) {
tcg_out_ext32s(s, dst, src);
} else {
tcg_out_ext32u(s, dst, src);
}
}
break;
case MO_UQ:
tcg_debug_assert(TCG_TARGET_REG_BITS == 64);
if (dst_type == TCG_TYPE_I32) {
tcg_out_extrl_i64_i32(s, dst, src);
} else {
tcg_out_mov(s, TCG_TYPE_I64, dst, src);
}
break;
default:
g_assert_not_reached();
}
}
#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