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-rw-r--r--sim/sh/interp.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/sim/sh/interp.c b/sim/sh/interp.c
index 887b7a6..91899f4 100644
--- a/sim/sh/interp.c
+++ b/sim/sh/interp.c
@@ -169,6 +169,7 @@ static char **prog_argv;
#if 1
static int maskw = 0;
+static int maskl = 0;
#endif
static SIM_OPEN_KIND sim_kind;
@@ -651,6 +652,7 @@ rbat_fast (memory, x, maskb)
#define RUWAT(x) (RWAT(x) & 0xffff)
#define RSWAT(x) ((short)(RWAT(x)))
+#define RSLAT(x) ((long)(RLAT(x)))
#define RSBAT(x) (SEXT(RBAT(x)))
#define RDAT(x, n) (do_rdat (memory, (x), (n), (maskl)))
@@ -1348,6 +1350,56 @@ macw (regs, memory, n, m, endianw)
MACL = sum;
}
+static void
+macl (regs, memory, n, m)
+ int *regs;
+ unsigned char *memory;
+ int m, n;
+{
+ long tempm, tempn;
+ long prod, macl, mach, sum;
+ long long ans,ansl,ansh,t;
+ unsigned long long high,low,combine;
+ union mac64
+ {
+ long m[2]; /* mach and macl*/
+ long long m64; /* 64 bit MAC */
+ }mac64;
+
+ tempm = RSLAT(regs[m]);
+ regs[m] += 4;
+
+ tempn = RSLAT(regs[n]);
+ regs[n] += 4;
+
+ mach = MACH;
+ macl = MACL;
+
+ mac64.m[0] = macl;
+ mac64.m[1] = mach;
+
+ ans = (long long)tempm * (long long)tempn; /* Multiply 32bit * 32bit */
+
+ mac64.m64 += ans; /* Accumulate 64bit + 64 bit */
+
+ macl = mac64.m[0];
+ mach = mac64.m[1];
+
+ if (S) /* Store only 48 bits of the result */
+ {
+ if (mach < 0) /* Result is negative */
+ {
+ mach = mach & 0x0000ffff; /* Mask higher 16 bits */
+ mach |= 0xffff8000; /* Sign extend higher 16 bits */
+ }
+ else
+ mach = mach & 0x00007fff; /* Postive Result */
+ }
+
+ MACL = macl;
+ MACH = mach;
+}
+
static struct loop_bounds
get_loop_bounds (rs, re, memory, mem_end, maskw, endianw)
int rs, re;