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Fix primary reason why the SH simulation hasn't been working on 64 bit hosts.

Browse Source 
sim/sh/
	* interp.c (dmul): Split into dmul_s and dmul_u.  Use explicit integer
	width types and simplify implementation.
	* gencode.c (dmuls.l, dmulu.l): Use new functions dmul_s and dmul_u.
This commit is contained in:
Oleg Endo 2016-04-10 11:00:01 +09:00
parent ba442f0f41
commit 93e6fe04cc
3 changed files with 21 additions and 37 deletions
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8
sim/sh/ChangeLog
View File

@ -1,6 +1,12 @@
2016-04-10 Oleg Endo <olegendo@gcc.gnu.org>
* interp.c (dmul): Split into dmul_s and dmul_u. Use explicit integer
width types and simplify implementation.
* gencode.c (dmuls.l, dmulu.l): Use new functions dmul_s and dmul_u.
2016-04-09 Oleg Endo <olegendo@gcc.gnu.org>
* sh/interp.c (sim_memory_size): Default init to 30.
* interp.c (sim_memory_size): Default init to 30.
(parse_and_set_memory_size): Adjust upper bound to 31.
2016-01-10 Mike Frysinger <vapier@gentoo.org>

4
sim/sh/gencode.c
View File

@ -405,11 +405,11 @@ static op tab[] =
},
{ "", "nm", "dmuls.l <REG_M>,<REG_N>", "0011nnnnmmmm1101",
"dmul (1/*signed*/, R[n], R[m]);",
"dmul_s (R[n], R[m]);",
},
{ "", "nm", "dmulu.l <REG_M>,<REG_N>", "0011nnnnmmmm0101",
"dmul (0/*unsigned*/, R[n], R[m]);",
"dmul_u (R[n], R[m]);",
},
{ "n", "n", "dt <REG_N>", "0100nnnn00010000",

46
sim/sh/interp.c
View File

@ -558,7 +558,7 @@ rwat_fast (unsigned char *memory, int x, int maskw, int endianw)
static INLINE int
riat_fast (unsigned char *insn_ptr, int endianw)
{
unsigned short *p = (unsigned short *) ((size_t) insn_ptr ^ endianw);
unsigned short *p = (unsigned short *) ((uintptr_t) insn_ptr ^ endianw);
return *p;
}
@ -1185,41 +1185,19 @@ div1 (int *R, int iRn2, int iRn1/*, int T*/)
}
static void
dmul (int sign, unsigned int rm, unsigned int rn)
dmul_s (uint32_t rm, uint32_t rn)
{
unsigned long RnL, RnH;
unsigned long RmL, RmH;
unsigned long temp0, temp1, temp2, temp3;
unsigned long Res2, Res1, Res0;
int64_t res = (int64_t)(int32_t)rm * (int64_t)(int32_t)rn;
MACH = (uint32_t)((uint64_t)res >> 32);
MACL = (uint32_t)res;
}
RnL = rn & 0xffff;
RnH = (rn >> 16) & 0xffff;
RmL = rm & 0xffff;
RmH = (rm >> 16) & 0xffff;
temp0 = RmL * RnL;
temp1 = RmH * RnL;
temp2 = RmL * RnH;
temp3 = RmH * RnH;
Res2 = 0;
Res1 = temp1 + temp2;
if (Res1 < temp1)
Res2 += 0x00010000;
temp1 = (Res1 << 16) & 0xffff0000;
Res0 = temp0 + temp1;
if (Res0 < temp0)
Res2 += 1;
Res2 += ((Res1 >> 16) & 0xffff) + temp3;
if (sign)
{
if (rn & 0x80000000)
Res2 -= rm;
if (rm & 0x80000000)
Res2 -= rn;
}
MACH = Res2;
MACL = Res0;
static void
dmul_u (uint32_t rm, uint32_t rn)
{
uint64_t res = (uint64_t)(uint32_t)rm * (uint64_t)(uint32_t)rn;
MACH = (uint32_t)(res >> 32);
MACL = (uint32_t)res;
}
static void