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| author | PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com> | 2019-02-22 07:53:31 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-25 14:05:19 +0100 |
| commit | 6c180071509aacb5989993b435e71e70500b72dd (patch) | |
| tree | a845e22118adaedb266fb9e8c3a6267f16a64057 /arch/powerpc/lib | |
| parent | powerpc sstep: Add support for extswsli instruction (diff) | |
| download | linux-6c180071509aacb5989993b435e71e70500b72dd.tar.xz linux-6c180071509aacb5989993b435e71e70500b72dd.zip | |
powerpc sstep: Add support for modsw, moduw instructions
This adds emulation support for the following integer instructions:
* Modulo Signed Word (modsw)
* Modulo Unsigned Word (moduw)
Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/lib')
| -rw-r--r-- | arch/powerpc/lib/sstep.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c index 742298bdf30b..9c65fb1da298 100644 --- a/arch/powerpc/lib/sstep.c +++ b/arch/powerpc/lib/sstep.c @@ -1708,6 +1708,13 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs, case 266: /* add */ op->val = regs->gpr[ra] + regs->gpr[rb]; goto arith_done; + + case 267: /* moduw */ + if (!cpu_has_feature(CPU_FTR_ARCH_300)) + return -1; + op->val = (unsigned int) regs->gpr[ra] % + (unsigned int) regs->gpr[rb]; + goto compute_done; #ifdef __powerpc64__ case 457: /* divdu */ op->val = regs->gpr[ra] / regs->gpr[rb]; @@ -1750,6 +1757,13 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs, return -1; + case 779: /* modsw */ + if (!cpu_has_feature(CPU_FTR_ARCH_300)) + return -1; + op->val = (int) regs->gpr[ra] % + (int) regs->gpr[rb]; + goto compute_done; + /* * Logical instructions |