4 files changed, 31 insertions, 11 deletions

diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt
index 7c3d5f923da1..b5c3b6114add 100644
--- a/fs/Kconfig.binfmt
+++ b/fs/Kconfig.binfmt
@@ -61,7 +61,8 @@ config BINFMT_SHARED_FLAT
 
 config BINFMT_AOUT
         tristate "Kernel support for a.out and ECOFF binaries"
-        depends on X86_32 || ALPHA || ARM || M68K || SPARC32
+        depends on ARCH_SUPPORTS_AOUT && \
+                (X86_32 || ALPHA || ARM || M68K || SPARC32)
         ---help---
           A.out (Assembler.OUTput) is a set of formats for libraries and
           executables used in the earliest versions of UNIX.  Linux used
diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
index 7f65e71bf859..a1bb2244cac7 100644
--- a/fs/binfmt_aout.c
+++ b/fs/binfmt_aout.c
@@ -28,6 +28,7 @@
 #include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/cacheflush.h>
+#include <asm/a.out-core.h>
 
 static int load_aout_binary(struct linux_binprm *, struct pt_regs * regs);
 static int load_aout_library(struct file*);
@@ -118,7 +119,7 @@ static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, u
         dump.u_ar0 = offsetof(struct user, regs);
 #endif
         dump.signal = signr;
-        dump_thread(regs, &dump);
+        aout_dump_thread(regs, &dump);
 
 /* If the size of the dump file exceeds the rlimit, then see what would happen
    if we wrote the stack, but not the data area.  */
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 111771d38e6e..a93b1170551b 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -513,6 +513,7 @@ out:
         return error;
 }
 
+#ifdef CONFIG_ARCH_SUPPORTS_AOUT
 static unsigned long load_aout_interp(struct exec *interp_ex,
                 struct file *interpreter)
 {
@@ -558,6 +559,14 @@ static unsigned long load_aout_interp(struct exec *interp_ex,
 out:
         return elf_entry;
 }
+#else
+/* dummy extern - the function should never be called if !CONFIG_AOUT_BINFMT */
+static inline unsigned long load_aout_interp(struct exec *interp_ex,
+                                             struct file *interpreter)
+{
+        return -ELIBACC;
+}
+#endif
 
 /*
  * These are the functions used to load ELF style executables and shared
@@ -565,9 +574,15 @@ out:
  */
 
 #define INTERPRETER_NONE 0
-#define INTERPRETER_AOUT 1
 #define INTERPRETER_ELF 2
 
+#ifdef CONFIG_ARCH_SUPPORTS_AOUT
+#define INTERPRETER_AOUT 1
+#define IS_AOUT_INTERP(x) ((x) == INTERPRETER_AOUT)
+#else
+#define IS_AOUT_INTERP(x) (0)
+#endif
+
 #ifndef STACK_RND_MASK
 #define STACK_RND_MASK (0x7ff >> (PAGE_SHIFT - 12))     /* 8MB of VA */
 #endif
@@ -775,6 +790,7 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
         /* Some simple consistency checks for the interpreter */
         if (elf_interpreter) {
                 static int warn;
+#ifdef CONFIG_ARCH_SUPPORTS_AOUT
                 interpreter_type = INTERPRETER_ELF | INTERPRETER_AOUT;
 
                 /* Now figure out which format our binary is */
@@ -782,11 +798,13 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
                     (N_MAGIC(loc->interp_ex) != ZMAGIC) &&
                     (N_MAGIC(loc->interp_ex) != QMAGIC))
                         interpreter_type = INTERPRETER_ELF;
-
+#else
+                interpreter_type = INTERPRETER_ELF;
+#endif
                 if (memcmp(loc->interp_elf_ex.e_ident, ELFMAG, SELFMAG) != 0)
                         interpreter_type &= ~INTERPRETER_ELF;
 
-                if (interpreter_type == INTERPRETER_AOUT && warn < 10) {
+                if (IS_AOUT_INTERP(interpreter_type) && warn < 10) {
                         printk(KERN_WARNING "a.out ELF interpreter %s is "
                                 "deprecated and will not be supported "
                                 "after Linux 2.6.25\n", elf_interpreter);
@@ -815,7 +833,7 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
 
         /* OK, we are done with that, now set up the arg stuff,
            and then start this sucker up */
-        if ((!bprm->sh_bang) && (interpreter_type == INTERPRETER_AOUT)) {
+        if (IS_AOUT_INTERP(interpreter_type) && !bprm->sh_bang) {
                 char *passed_p = passed_fileno;
                 sprintf(passed_fileno, "%d", elf_exec_fileno);
 
@@ -1004,7 +1022,7 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
         }
 
         if (elf_interpreter) {
-                if (interpreter_type == INTERPRETER_AOUT) {
+                if (IS_AOUT_INTERP(interpreter_type)) {
                         elf_entry = load_aout_interp(&loc->interp_ex,
                                                      interpreter);
                 } else {
@@ -1045,7 +1063,7 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
 
         kfree(elf_phdata);
 
-        if (interpreter_type != INTERPRETER_AOUT)
+        if (!IS_AOUT_INTERP(interpreter_type))
                 sys_close(elf_exec_fileno);
 
         set_binfmt(&elf_format);
@@ -1061,14 +1079,14 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
         compute_creds(bprm);
         current->flags &= ~PF_FORKNOEXEC;
         retval = create_elf_tables(bprm, &loc->elf_ex,
-                          (interpreter_type == INTERPRETER_AOUT),
+                          IS_AOUT_INTERP(interpreter_type),
                           load_addr, interp_load_addr);
         if (retval < 0) {
                 send_sig(SIGKILL, current, 0);
                 goto out;
         }
         /* N.B. passed_fileno might not be initialized? */
-        if (interpreter_type == INTERPRETER_AOUT)
+        if (IS_AOUT_INTERP(interpreter_type))
                 current->mm->arg_start += strlen(passed_fileno) + 1;
         current->mm->end_code = end_code;
         current->mm->start_code = start_code;
diff --git a/fs/exec.c b/fs/exec.c
index 927a7c5ef4af..9f9c27224d7c 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1166,7 +1166,7 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs)
 {
         int try,retval;
         struct linux_binfmt *fmt;
-#ifdef __alpha__
+#if defined(__alpha__) && defined(CONFIG_ARCH_SUPPORTS_AOUT)
         /* handle /sbin/loader.. */
         {
             struct exec * eh = (struct exec *) bprm->buf;