1 files changed, 62 insertions, 0 deletions

diff --git a/arch/um/include/sysdep-ppc/sigcontext.h b/arch/um/include/sysdep-ppc/sigcontext.h
new file mode 100644
index 000000000000..f20d965de9c7
--- /dev/null
+++ b/arch/um/include/sysdep-ppc/sigcontext.h
@@ -0,0 +1,62 @@
+/* 
+ * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __SYS_SIGCONTEXT_PPC_H
+#define __SYS_SIGCONTEXT_PPC_H
+
+#define DSISR_WRITE 0x02000000
+
+#define SC_FAULT_ADDR(sc) ({ \
+                struct sigcontext *_sc = (sc); \
+                long retval = -1; \
+                switch (_sc->regs->trap) { \
+                case 0x300: \
+                        /* data exception */ \
+                        retval = _sc->regs->dar; \
+                        break; \
+                case 0x400: \
+                        /* instruction exception */ \
+                        retval = _sc->regs->nip; \
+                        break; \
+                default: \
+                        panic("SC_FAULT_ADDR: unhandled trap type\n"); \
+                } \
+                retval; \
+        })
+
+#define SC_FAULT_WRITE(sc) ({ \
+                struct sigcontext *_sc = (sc); \
+                long retval = -1; \
+                switch (_sc->regs->trap) { \
+                case 0x300: \
+                        /* data exception */ \
+                        retval = !!(_sc->regs->dsisr & DSISR_WRITE); \
+                        break; \
+                case 0x400: \
+                        /* instruction exception: not a write */ \
+                        retval = 0; \
+                        break; \
+                default: \
+                        panic("SC_FAULT_ADDR: unhandled trap type\n"); \
+                } \
+                retval; \
+        })
+
+#define SC_IP(sc) ((sc)->regs->nip)
+#define SC_SP(sc) ((sc)->regs->gpr[1])
+#define SEGV_IS_FIXABLE(sc) (1)
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */