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Commit 6324320d authored by Sandipan Das's avatar Sandipan Das Committed by Michael Ellerman
Browse files

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: default avatarSandipan Das <sandipan@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 6c180071

arch/powerpc/lib/sstep.c

+15 −2
Original line number Diff line number Diff line
@@ -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;