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Workaround dyngen problems with m68k conditional branch ops. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2968 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2007-06-09 20:50:01 +00:00
parent 0cf5c6771b
commit 06d92f40a1
2 changed files with 40 additions and 14 deletions
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25
target-m68k/op-hacks.h
View File

@ -103,3 +103,28 @@ static inline void gen_op_goto_tb(int dummy, int n, long tb)
gen_op_goto_tb1(TBPARAM(tb)); gen_op_goto_tb1(TBPARAM(tb));
} }
} }
static inline void gen_op_jmp_z32(int val, int label)
{
gen_op_set_T0_z32(val);
gen_op_jmp_T0(label);
}
static inline void gen_op_jmp_nz32(int val, int label)
{
gen_op_set_T0_nz32(val);
gen_op_jmp_T0(label);
}
static inline void gen_op_jmp_s32(int val, int label)
{
gen_op_set_T0_s32(val);
gen_op_jmp_T0(label);
}
static inline void gen_op_jmp_ns32(int val, int label)
{
gen_op_set_T0_ns32(val);
gen_op_jmp_T0(label);
}

29
target-m68k/op.c
View File

@ -487,37 +487,38 @@ OP(jmp)
GOTO_LABEL_PARAM(1); GOTO_LABEL_PARAM(1);
} }
/* These ops involve a function call, which probably requires a stack frame OP(set_T0_z32)
and breaks things on some hosts. */
OP(jmp_z32)
{ {
uint32_t arg = get_op(PARAM1); uint32_t arg = get_op(PARAM1);
if (arg == 0) T0 = (arg == 0);
GOTO_LABEL_PARAM(2);
FORCE_RET(); FORCE_RET();
} }
OP(jmp_nz32) OP(set_T0_nz32)
{ {
uint32_t arg = get_op(PARAM1); uint32_t arg = get_op(PARAM1);
if (arg != 0) T0 = (arg != 0);
GOTO_LABEL_PARAM(2);
FORCE_RET(); FORCE_RET();
} }
OP(jmp_s32) OP(set_T0_s32)
{ {
int32_t arg = get_op(PARAM1); int32_t arg = get_op(PARAM1);
if (arg < 0) T0 = (arg > 0);
GOTO_LABEL_PARAM(2);
FORCE_RET(); FORCE_RET();
} }
OP(jmp_ns32) OP(set_T0_ns32)
{ {
int32_t arg = get_op(PARAM1); int32_t arg = get_op(PARAM1);
if (arg >= 0) T0 = (arg >= 0);
GOTO_LABEL_PARAM(2); FORCE_RET();
}
OP(jmp_T0)
{
if (T0)
GOTO_LABEL_PARAM(1);
FORCE_RET(); FORCE_RET();
} }