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Fixes overflow of RCL instructions

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@933
This commit is contained in:
Sjoerd van der Berg 2003-04-15 15:59:57 +00:00
parent 99fa64e36c
commit 1ba388b35c
1 changed files with 4 additions and 4 deletions
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8
src/cpu/instructions.h
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@ -297,7 +297,7 @@
(cf << (flags.var2.b-1)) | \
(flags.var1.b >> (9-flags.var2.b)); \
SETFLAGBIT(CF,((flags.var1.b >> (8-flags.var2.b)) & 1)); \
SETFLAGBIT(OF,((flags.result.b & 0x80) ^ (cf ? 0x80 : 0)) != 0); \
SETFLAGBIT(OF,(flags.var1.b ^ flags.result.b) & 0x80); \
save(op1,flags.result.b); \
}
@ -312,7 +312,7 @@
(cf << (flags.var2.b-1)) | \
(flags.var1.w >> (17-flags.var2.b)); \
SETFLAGBIT(CF,((flags.var1.w >> (16-flags.var2.b)) & 1)); \
SETFLAGBIT(OF,((flags.result.w & 0x8000) ^ (cf ? 0x8000 : 0)) != 0); \
SETFLAGBIT(OF,(flags.var1.w ^ flags.result.w) & 0x8000); \
save(op1,flags.result.w); \
}
@ -330,8 +330,8 @@
(cf << (flags.var2.b-1)) | \
(flags.var1.d >> (33-flags.var2.b)); \
} \
SETFLAGBIT(CF,((flags.var1.d >> (32-flags.var2.b)) & 1)); \
SETFLAGBIT(OF,((flags.result.d & 0x80000000) ^ (cf ? 0x80000000 : 0)) != 0); \
SETFLAGBIT(CF,((flags.var1.d >> (32-flags.var2.b)) & 1)); \
SETFLAGBIT(OF,(flags.var1.d ^ flags.result.d) & 0x80000000); \
save(op1,flags.result.d); \
}