arch/tile: Change struct sigcontext to be more useful

[linux-flexiantxendom0-3.2.10.git] / arch / tile / include / asm / sigcontext.h

diff --git a/arch/tile/include/asm/sigcontext.h b/arch/tile/include/asm/sigcontext.h
index 7cd7672..5e2d033 100644 (file)
--- a/arch/tile/include/asm/sigcontext.h
+++ b/arch/tile/include/asm/sigcontext.h
@@ -15,13 +15,21 @@
 #ifndef _ASM_TILE_SIGCONTEXT_H
 #define _ASM_TILE_SIGCONTEXT_H
 
-/* NOTE: we can't include <linux/ptrace.h> due to #include dependencies. */
-#include <asm/ptrace.h>
-
-/* Must track <sys/ucontext.h> */
+#include <arch/abi.h>
 
+/*
+ * struct sigcontext has the same shape as struct pt_regs,
+ * but is simplified since we know the fault is from userspace.
+ */
 struct sigcontext {
-       struct pt_regs regs;
+       uint_reg_t gregs[53];   /* General-purpose registers.  */
+       uint_reg_t tp;          /* Aliases gregs[TREG_TP].  */
+       uint_reg_t sp;          /* Aliases gregs[TREG_SP].  */
+       uint_reg_t lr;          /* Aliases gregs[TREG_LR].  */
+       uint_reg_t pc;          /* Program counter.  */
+       uint_reg_t ics;         /* In Interrupt Critical Section?  */
+       uint_reg_t faultnum;    /* Fault number.  */
+       uint_reg_t pad[5];
 };
 
 #endif /* _ASM_TILE_SIGCONTEXT_H */