2 files changed, 75 insertions, 6 deletions
diff --git a/arch/openrisc/include/asm/pgalloc.h b/arch/openrisc/include/asm/pgalloc.h
index c6a73772a546..3372f4e6ab4b 100644
--- a/arch/openrisc/include/asm/pgalloc.h
+++ b/arch/openrisc/include/asm/pgalloc.h
@@ -41,15 +41,13 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
  */
 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
 {
-	pgd_t *ret = (pgd_t *)__get_free_page(GFP_KERNEL);
+	pgd_t *ret = __pgd_alloc(mm, 0);
 
-	if (ret) {
-		memset(ret, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
+	if (ret)
 		memcpy(ret + USER_PTRS_PER_PGD,
 		       swapper_pg_dir + USER_PTRS_PER_PGD,
 		       (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
 
-	}
 	return ret;
 }
 
@@ -68,7 +66,7 @@ extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
 
 #define __pte_free_tlb(tlb, pte, addr)				\
 do {								\
-	pagetable_pte_dtor(page_ptdesc(pte));			\
+	pagetable_dtor(page_ptdesc(pte));			\
 	tlb_remove_page_ptdesc((tlb), (page_ptdesc(pte)));	\
 } while (0)
 
diff --git a/arch/openrisc/include/asm/ptrace.h b/arch/openrisc/include/asm/ptrace.h
index 1da3e66292e2..e5a282b67075 100644
--- a/arch/openrisc/include/asm/ptrace.h
+++ b/arch/openrisc/include/asm/ptrace.h
@@ -17,6 +17,7 @@
 
 #include <asm/spr_defs.h>
 #include <uapi/asm/ptrace.h>
+#include <linux/compiler.h>
 
 /*
  * Make kernel PTrace/register structures opaque to userspace... userspace can
@@ -42,6 +43,36 @@ struct pt_regs {
 			/* Named registers */
 			long  sr;	/* Stored in place of r0 */
 			long  sp;	/* r1 */
+			long  gpr2;
+			long  gpr3;
+			long  gpr4;
+			long  gpr5;
+			long  gpr6;
+			long  gpr7;
+			long  gpr8;
+			long  gpr9;
+			long  gpr10;
+			long  gpr11;
+			long  gpr12;
+			long  gpr13;
+			long  gpr14;
+			long  gpr15;
+			long  gpr16;
+			long  gpr17;
+			long  gpr18;
+			long  gpr19;
+			long  gpr20;
+			long  gpr21;
+			long  gpr22;
+			long  gpr23;
+			long  gpr24;
+			long  gpr25;
+			long  gpr26;
+			long  gpr27;
+			long  gpr28;
+			long  gpr29;
+			long  gpr30;
+			long  gpr31;
 		};
 		struct {
 			/* Old style */
@@ -66,16 +97,56 @@ struct pt_regs {
 /* TODO: Rename this to REDZONE because that's what it is */
 #define STACK_FRAME_OVERHEAD  128  /* size of minimum stack frame */
 
-#define instruction_pointer(regs)	((regs)->pc)
+#define MAX_REG_OFFSET offsetof(struct pt_regs, orig_gpr11)
+
+/* Helpers for working with the instruction pointer */
+static inline unsigned long instruction_pointer(struct pt_regs *regs)
+{
+	return (unsigned long)regs->pc;
+}
+static inline void instruction_pointer_set(struct pt_regs *regs,
+					   unsigned long val)
+{
+	regs->pc = val;
+}
+
 #define user_mode(regs)			(((regs)->sr & SPR_SR_SM) == 0)
 #define user_stack_pointer(regs)	((unsigned long)(regs)->sp)
 #define profile_pc(regs)		instruction_pointer(regs)
 
+/* Valid only for Kernel mode traps. */
+static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
+{
+	return (unsigned long)regs->sp;
+}
+
 static inline long regs_return_value(struct pt_regs *regs)
 {
 	return regs->gpr[11];
 }
 
+extern int regs_query_register_offset(const char *name);
+extern unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs,
+					       unsigned int n);
+
+/**
+ * regs_get_register() - get register value from its offset
+ * @regs:	pt_regs from which register value is gotten
+ * @offset:	offset of the register.
+ *
+ * regs_get_register returns the value of a register whose offset from @regs.
+ * The @offset is the offset of the register in struct pt_regs.
+ * If @offset is bigger than MAX_REG_OFFSET, this returns 0.
+ */
+static inline unsigned long regs_get_register(struct pt_regs *regs,
+					      unsigned int offset)
+{
+	if (unlikely(offset > MAX_REG_OFFSET))
+		return 0;
+
+	return *(unsigned long *)((unsigned long)regs + offset);
+}
+
 #endif /* __ASSEMBLY__ */
 
 /*