[PATCH] powerpc: Merge elf.h

ppc/ppc64: Merge elf.h into include/asm-powerpc

Merge elf.h into a single include file for 32 and 64-bit ppc platforms. This
patch has been tested on 32-bit and built on 64-bit platforms.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Becky Bruce <Becky.Bruce@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 62 insertions, 186 deletions

diff --git a/include/asm-ppc64/elf.h b/include/asm-powerpc/elf.h
index e27c2942953c..36b9d5cec50c 100644
--- a/include/asm-ppc64/elf.h
+++ b/include/asm-powerpc/elf.h
@@ -1,5 +1,5 @@
-#ifndef __PPC64_ELF_H
-#define __PPC64_ELF_H
+#ifndef _ASM_POWERPC_ELF_H
+#define _ASM_POWERPC_ELF_H
 
 #include <asm/types.h>
 #include <asm/ptrace.h>
@@ -76,7 +76,7 @@
 #define R_PPC_GOT_DTPREL16_HI   93 /* half16*   (sym+add)@got@dtprel@h */
 #define R_PPC_GOT_DTPREL16_HA   94 /* half16*   (sym+add)@got@dtprel@ha */
 
-/* Keep this the last entry.  */
+/* keep this the last entry. */
 #define R_PPC_NUM               95
 
 /*
@@ -91,8 +91,6 @@
 
 #define ELF_NGREG       48      /* includes nip, msr, lr, etc. */
 #define ELF_NFPREG      33      /* includes fpscr */
-#define ELF_NVRREG32    33      /* includes vscr & vrsave stuffed together */
-#define ELF_NVRREG      34      /* includes vscr & vrsave in split vectors */
 
 typedef unsigned long elf_greg_t64;
 typedef elf_greg_t64 elf_gregset_t64[ELF_NGREG];
@@ -101,8 +99,21 @@ typedef unsigned int elf_greg_t32;
 typedef elf_greg_t32 elf_gregset_t32[ELF_NGREG];
 
 /*
- * These are used to set parameters in the core dumps.
+ * ELF_ARCH, CLASS, and DATA are used to set parameters in the core dumps.
  */
+#ifdef __powerpc64__
+# define ELF_NVRREG32   33      /* includes vscr & vrsave stuffed together */
+# define ELF_NVRREG     34      /* includes vscr & vrsave in split vectors */
+# define ELF_GREG_TYPE  elf_greg_t64
+#else
+# define ELF_NEVRREG    34      /* includes acc (as 2) */
+# define ELF_NVRREG     33      /* includes vscr */
+# define ELF_GREG_TYPE  elf_greg_t32
+# define ELF_ARCH       EM_PPC
+# define ELF_CLASS      ELFCLASS32
+# define ELF_DATA       ELFDATA2MSB
+#endif /* __powerpc64__ */
+
 #ifndef ELF_ARCH
 # define ELF_ARCH       EM_PPC64
 # define ELF_CLASS      ELFCLASS64
@@ -115,8 +126,9 @@ typedef elf_greg_t32 elf_gregset_t32[ELF_NGREG];
   typedef elf_greg_t32 elf_greg_t;
   typedef elf_gregset_t32 elf_gregset_t;
 # define elf_addr_t u32
-#endif
+#endif /* ELF_ARCH */
 
+/* Floating point registers */
 typedef double elf_fpreg_t;
 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
 
@@ -126,7 +138,9 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
  * The entry with index 32 contains the vscr as the last word (offset 12) 
  * within the quadword.  This allows the vscr to be stored as either a 
  * quadword (since it must be copied via a vector register to/from storage) 
- * or as a word.  The entry with index 33 contains the vrsave as the first 
+ * or as a word.  
+ *
+ * 64-bit kernel notes: The entry at index 33 contains the vrsave as the first  
  * word (offset 0) within the quadword.
  *
  * This definition of the VMX state is compatible with the current PPC32 
@@ -139,7 +153,9 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
  */
 typedef __vector128 elf_vrreg_t;
 typedef elf_vrreg_t elf_vrregset_t[ELF_NVRREG];
+#ifdef __powerpc64__
 typedef elf_vrreg_t elf_vrregset_t32[ELF_NVRREG32];
+#endif
 
 /*
  * This is used to ensure we don't load something for the wrong architecture.
@@ -159,26 +175,30 @@ typedef elf_vrreg_t elf_vrregset_t32[ELF_NVRREG32];
 #ifdef __KERNEL__
 
 /* Common routine for both 32-bit and 64-bit processes */
-static inline void ppc64_elf_core_copy_regs(elf_gregset_t elf_regs,
+static inline void ppc_elf_core_copy_regs(elf_gregset_t elf_regs,
                                             struct pt_regs *regs)
 {
         int i;
-        int gprs = sizeof(struct pt_regs)/sizeof(elf_greg_t64);
+        int gprs = sizeof(struct pt_regs)/sizeof(ELF_GREG_TYPE);
 
         if (gprs > ELF_NGREG)
                 gprs = ELF_NGREG;
 
         for (i=0; i < gprs; i++)
-                elf_regs[i] = (elf_greg_t)((elf_greg_t64 *)regs)[i];
+                elf_regs[i] = (elf_greg_t)((ELF_GREG_TYPE *)regs)[i];
+
+        memset((char *)(elf_regs) + sizeof(struct pt_regs), 0,          \
+               sizeof(elf_gregset_t) - sizeof(struct pt_regs));
+
 }
-#define ELF_CORE_COPY_REGS(gregs, regs) ppc64_elf_core_copy_regs(gregs, regs);
+#define ELF_CORE_COPY_REGS(gregs, regs) ppc_elf_core_copy_regs(gregs, regs);
 
 static inline int dump_task_regs(struct task_struct *tsk,
                                  elf_gregset_t *elf_regs)
 {
         struct pt_regs *regs = tsk->thread.regs;
         if (regs)
-                ppc64_elf_core_copy_regs(*elf_regs, regs);
+                ppc_elf_core_copy_regs(*elf_regs, regs);
 
         return 1;
 }
@@ -187,15 +207,21 @@ static inline int dump_task_regs(struct task_struct *tsk,
 extern int dump_task_fpu(struct task_struct *, elf_fpregset_t *); 
 #define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
 
-/* XXX Should we define the XFPREGS using altivec ??? */
-
-#endif
+#endif /* __KERNEL__ */
 
-/* This yields a mask that user programs can use to figure out what
+/* ELF_HWCAP yields a mask that user programs can use to figure out what
    instruction set this cpu supports.  This could be done in userspace,
    but it's not easy, and we've already done it here.  */
-
-#define ELF_HWCAP       (cur_cpu_spec->cpu_user_features)
+#ifdef __powerpc64__
+# define ELF_HWCAP      (cur_cpu_spec->cpu_user_features)
+# define ELF_PLAT_INIT(_r, load_addr)   do { \
+        memset(_r->gpr, 0, sizeof(_r->gpr)); \
+        _r->ctr = _r->link = _r->xer = _r->ccr = 0; \
+        _r->gpr[2] = load_addr; \
+} while (0)
+#else
+# define ELF_HWCAP      (cur_cpu_spec[0]->cpu_user_features)
+#endif /* __powerpc64__ */
 
 /* This yields a string that ld.so will use to load implementation
    specific libraries for optimization.  This is more specific in
@@ -206,14 +232,10 @@ extern int dump_task_fpu(struct task_struct *, elf_fpregset_t *);
 
 #define ELF_PLATFORM    (NULL)
 
-#define ELF_PLAT_INIT(_r, load_addr)    do { \
-        memset(_r->gpr, 0, sizeof(_r->gpr)); \
-        _r->ctr = _r->link = _r->xer = _r->ccr = 0; \
-        _r->gpr[2] = load_addr; \
-} while (0)
-
 #ifdef __KERNEL__
-#define SET_PERSONALITY(ex, ibcs2)                              \
+
+#ifdef __powerpc64__
+# define SET_PERSONALITY(ex, ibcs2)                             \
 do {                                                            \