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Diffstat (limited to 'opcodes/s390-opc.c')
-rw-r--r--opcodes/s390-opc.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/opcodes/s390-opc.c b/opcodes/s390-opc.c
index aa2e5a3..57b7f53 100644
--- a/opcodes/s390-opc.c
+++ b/opcodes/s390-opc.c
@@ -133,7 +133,10 @@ const struct s390_operand s390_operands[] =
#define U32_16 41 /* 32 bit unsigned value starting at 16 */
{ 32, 16, 0 },
#define M_16 42 /* 4 bit optional mask starting at 16 */
- { 4, 16, S390_OPERAND_OPTIONAL }
+ { 4, 16, S390_OPERAND_OPTIONAL },
+#define RO_28 43 /* optional GPR starting at position 28 */
+ { 4, 28, (S390_OPERAND_GPR | S390_OPERAND_OPTIONAL) }
+
};
@@ -202,6 +205,9 @@ const struct s390_operand s390_operands[] =
#define INSTR_RRE_RA 4, { R_24,A_28,0,0,0,0 } /* e.g. ear */
#define INSTR_RRE_RF 4, { R_24,F_28,0,0,0,0 } /* e.g. cefbr */
#define INSTR_RRE_RR 4, { R_24,R_28,0,0,0,0 } /* e.g. lura */
+/* Actually efpc and sfpc do not take an optional operand.
+ This is just a workaround for existing code e.g. glibc. */
+#define INSTR_RRE_RR_OPT 4, { R_24,RO_28,0,0,0,0 } /* efpc, sfpc */
#define INSTR_RRF_F0FF 4, { F_16,F_24,F_28,0,0,0 } /* e.g. madbr */
#define INSTR_RRF_FUFF 4, { F_24,F_16,F_28,U4_20,0,0 } /* e.g. didbr */
#define INSTR_RRF_RURR 4, { R_24,R_28,R_16,U4_20,0,0 } /* e.g. .insn */
@@ -275,6 +281,7 @@ const struct s390_operand s390_operands[] =
#define MASK_RRE_RA { 0xff, 0xff, 0xff, 0x00, 0x00, 0x00 }
#define MASK_RRE_RF { 0xff, 0xff, 0xff, 0x00, 0x00, 0x00 }
#define MASK_RRE_RR { 0xff, 0xff, 0xff, 0x00, 0x00, 0x00 }
+#define MASK_RRE_RR_OPT { 0xff, 0xff, 0xff, 0x00, 0x00, 0x00 }
#define MASK_RRF_F0FF { 0xff, 0xff, 0x0f, 0x00, 0x00, 0x00 }
#define MASK_RRF_FUFF { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }
#define MASK_RRF_RURR { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }