[S390] addressing mode limits and psw address wrapping
An instruction with an address right below the adress limit for the
current addressing mode will wrap. The instruction restart logic in
the protection fault handler and the signal code need to follow the
wrapping rules to find the correct instruction address.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index 93c907b..2904cc6 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -236,6 +236,8 @@
#define PSW_MASK_ASC 0x0000C000UL
#define PSW_MASK_CC 0x00003000UL
#define PSW_MASK_PM 0x00000F00UL
+#define PSW_MASK_EA 0x00000000UL
+#define PSW_MASK_BA 0x00000000UL
#define PSW_ADDR_AMODE 0x80000000UL
#define PSW_ADDR_INSN 0x7FFFFFFFUL
@@ -261,6 +263,8 @@
#define PSW_MASK_ASC 0x0000C00000000000UL
#define PSW_MASK_CC 0x0000300000000000UL
#define PSW_MASK_PM 0x00000F0000000000UL
+#define PSW_MASK_EA 0x0000000100000000UL
+#define PSW_MASK_BA 0x0000000080000000UL
#define PSW_ADDR_AMODE 0x0000000000000000UL
#define PSW_ADDR_INSN 0xFFFFFFFFFFFFFFFFUL