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UIQ3 bugfixes, SVP drc indirect jumps, stuff

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@572 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-08-24 09:33:12 +00:00
parent 02ba8788a0
commit f8af96349e
29 changed files with 193 additions and 157 deletions
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44
Pico/carthw/svp/gen_arm.c
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@ -178,27 +178,49 @@ static void emit_mov_const(int cond, int d, unsigned int val)
EOP_C_DOP_IMM(cond, need_or ? A_OP_ORR : A_OP_MOV, 0, need_or ? d : 0, d, 0, val&0xff);
}
static void check_offset_24(int val)
static int is_offset_24(int val)
{
if (val >= (int)0xff000000 && val <= 0x00ffffff) return;
printf("offset_24 overflow %08x\n", val);
exit(1);
if (val >= (int)0xff000000 && val <= 0x00ffffff) return 1;
return 0;
}
static void emit_call(int cond, void *target)
static int emit_xbranch(int cond, void *target, int is_call)
{
int val = (unsigned int *)target - tcache_ptr - 2;
check_offset_24(val);
int direct = is_offset_24(val);
u32 *start_ptr = tcache_ptr;
EOP_C_B(cond,1,val & 0xffffff); // bl target
if (direct)
{
EOP_C_B(cond,is_call,val & 0xffffff); // b, bl target
}
else
{
#ifdef __EPOC32__
// elprintf(EL_SVP, "emitting indirect jmp %08x->%08x", tcache_ptr, target);
if (is_call)
EOP_ADD_IMM(14,15,0,8); // add lr,pc,#8
EOP_C_AM2_IMM(cond,1,0,1,15,15,0); // ldrcc pc,[pc]
EOP_MOV_REG_SIMPLE(15,15); // mov pc, pc
EMIT((u32)target);
#else
// should never happen
elprintf(EL_STATUS|EL_SVP|EL_ANOMALY, "indirect jmp %08x->%08x", target, tcache_ptr);
exit(1);
#endif
}
return tcache_ptr - start_ptr;
}
static void emit_jump(int cond, void *target)
static int emit_call(int cond, void *target)
{
int val = (unsigned int *)target - tcache_ptr - 2;
check_offset_24(val);
return emit_xbranch(cond, target, 1);
}
EOP_C_B(cond,0,val & 0xffffff); // b target
static int emit_jump(int cond, void *target)
{
return emit_xbranch(cond, target, 0);
}
static void handle_caches(void)