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authorSandipan Das <sandipan@linux.ibm.com>2019-02-22 12:23:32 +0530
committerMichael Ellerman <mpe@ellerman.id.au>2019-02-26 00:05:20 +1100
commit6324320de609766f79b85b681a53061885bc679d (patch)
treeab6108ff562de78a7227ede07ae4e2f2c11cc206 /arch/powerpc
parent6c180071509aacb5989993b435e71e70500b72dd (diff)
powerpc sstep: Add support for modsd, modud instructions
This adds emulation support for the following integer instructions: * Modulo Signed Doubleword (modsd) * Modulo Unsigned Doubleword (modud) Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/lib/sstep.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index 9c65fb1da298..3d33fb509ef4 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -1704,7 +1704,13 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
(int) regs->gpr[rb];
goto arith_done;
-
+#ifdef __powerpc64__
+ case 265: /* modud */
+ if (!cpu_has_feature(CPU_FTR_ARCH_300))
+ return -1;
+ op->val = regs->gpr[ra] % regs->gpr[rb];
+ goto compute_done;
+#endif
case 266: /* add */
op->val = regs->gpr[ra] + regs->gpr[rb];
goto arith_done;
@@ -1756,7 +1762,14 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
}
return -1;
-
+#ifdef __powerpc64__
+ case 777: /* modsd */
+ if (!cpu_has_feature(CPU_FTR_ARCH_300))
+ return -1;
+ op->val = (long int) regs->gpr[ra] %
+ (long int) regs->gpr[rb];
+ goto compute_done;
+#endif
case 779: /* modsw */
if (!cpu_has_feature(CPU_FTR_ARCH_300))
return -1;