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Implement shld

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This commit is contained in:
Theodore Dubois 2018-06-03 08:41:10 -07:00
parent 7cacc23b50
commit 3f4fee556c
2 changed files with 18 additions and 8 deletions
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14
emu/gadgets-x86/bits.S
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@ -34,18 +34,17 @@
.gadget_array \type
.endr
.irp arg, imm,cl
.macro do_shiftd op, arg
.macro x name, reg
.gadget shrd_\arg\()32_\name
.gadget \op\()_\arg\()32_\name
.ifc \arg,imm
pushq %rcx
movb (%_ip), %cl
.endif
testb $(32 - 1), %cl
jz 1f
shrd %cl, %\reg, %tmpd
\op %cl, %\reg, %tmpd
setf_oc
setf_zsp %tmpd, l
1:
.ifc \arg,imm
popq %rcx
@ -56,7 +55,12 @@
.endm
.each_reg x
.purgem x
.gadget_array shrd_\arg
.gadget_array \op\()_\arg
.endm
.irp op, shrd,shld
.irp arg, imm,cl
do_shiftd \op, \arg
.endr
.endr
.macro do_bt arg

12
emu/gen.c
View File

@ -274,10 +274,16 @@ static inline bool gen_op(struct gen_state *state, gadget_t *gadgets, enum arg a
#define SHR(count, val,z) los(shr, count, val, z)
#define SAR(count, val,z) los(sar, count, val, z)
#define SHLD(count, extra, dst,z) UNDEFINED
#define SHRD(count, extra, dst,z) load(dst,z); \
#define SHLD(count, extra, dst,z) \
load(dst,z); \
if (arg_##count == arg_reg_c) op(shld_cl, extra,z); \
else { op(shld_imm, extra,z); GEN(imm); } \
store(dst,z)
#define SHRD(count, extra, dst,z) \
load(dst,z); \
if (arg_##count == arg_reg_c) op(shrd_cl, extra,z); \
else { op(shrd_imm, extra,z); GEN(imm); } store(dst,z)
else { op(shrd_imm, extra,z); GEN(imm); } \
store(dst,z)
#define BT(bit, val,z) lo(bt, bit, val, z)
#define BTC(bit, val,z) UNDEFINED