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sh2 drc, several bug fixes

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kub 2024-06-09 22:30:51 +00:00
parent a43c77c0e5
commit 31efd4546e
11 changed files with 51 additions and 40 deletions
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5
cpu/drc/emit_x86.c
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@ -1,7 +1,7 @@
/*
* Basic macros to emit x86 instructions and some utils
* Copyright (C) 2008,2009,2010 notaz
* Copyright (C) 2019 kub
* Copyright (C) 2019-2024 kub
*
* This work is licensed under the terms of MAME license.
* See COPYING file in the top-level directory.
@ -1365,7 +1365,8 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI, // x86-64,i386 common
/* overflow if top 17 bits of MACH aren't all 1 or 0 */ \
/* to check: add MACH >> 31 to MACH >> 15. this is 0 if no overflow */ \
emith_asr(rn, mh, 15); \
emith_addf_r_r_r_lsr(rn, rn, mh, 31); \
emith_lsr(rm, mh, 31); \
emith_addf_r_r(rn, rm); \
EMITH_SJMP_START(DCOND_EQ); /* sum != 0 -> -ovl */ \
emith_move_r_imm_c(DCOND_NE, ml, 0x00000000); \
emith_move_r_imm_c(DCOND_NE, mh, 0x00008000); \