diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index 92b61629fe3..9aed4776378 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -317,68 +317,6 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
 	return 0;
 }
 
-/*
- * Fill in the user structure for an ECOFF core dump.
- */
-void
-dump_thread(struct pt_regs * pt, struct user * dump)
-{
-	/* switch stack follows right below pt_regs: */
-	struct switch_stack * sw = ((struct switch_stack *) pt) - 1;
-
-	dump->magic = CMAGIC;
-	dump->start_code  = current->mm->start_code;
-	dump->start_data  = current->mm->start_data;
-	dump->start_stack = rdusp() & ~(PAGE_SIZE - 1);
-	dump->u_tsize = ((current->mm->end_code - dump->start_code)
-			 >> PAGE_SHIFT);
-	dump->u_dsize = ((current->mm->brk + PAGE_SIZE-1 - dump->start_data)
-			 >> PAGE_SHIFT);
-	dump->u_ssize = (current->mm->start_stack - dump->start_stack
-			 + PAGE_SIZE-1) >> PAGE_SHIFT;
-
-	/*
-	 * We store the registers in an order/format that is
-	 * compatible with DEC Unix/OSF/1 as this makes life easier
-	 * for gdb.
-	 */
-	dump->regs[EF_V0]  = pt->r0;
-	dump->regs[EF_T0]  = pt->r1;
-	dump->regs[EF_T1]  = pt->r2;
-	dump->regs[EF_T2]  = pt->r3;
-	dump->regs[EF_T3]  = pt->r4;
-	dump->regs[EF_T4]  = pt->r5;
-	dump->regs[EF_T5]  = pt->r6;
-	dump->regs[EF_T6]  = pt->r7;
-	dump->regs[EF_T7]  = pt->r8;
-	dump->regs[EF_S0]  = sw->r9;
-	dump->regs[EF_S1]  = sw->r10;
-	dump->regs[EF_S2]  = sw->r11;
-	dump->regs[EF_S3]  = sw->r12;
-	dump->regs[EF_S4]  = sw->r13;
-	dump->regs[EF_S5]  = sw->r14;
-	dump->regs[EF_S6]  = sw->r15;
-	dump->regs[EF_A3]  = pt->r19;
-	dump->regs[EF_A4]  = pt->r20;
-	dump->regs[EF_A5]  = pt->r21;
-	dump->regs[EF_T8]  = pt->r22;
-	dump->regs[EF_T9]  = pt->r23;
-	dump->regs[EF_T10] = pt->r24;
-	dump->regs[EF_T11] = pt->r25;
-	dump->regs[EF_RA]  = pt->r26;
-	dump->regs[EF_T12] = pt->r27;
-	dump->regs[EF_AT]  = pt->r28;
-	dump->regs[EF_SP]  = rdusp();
-	dump->regs[EF_PS]  = pt->ps;
-	dump->regs[EF_PC]  = pt->pc;
-	dump->regs[EF_GP]  = pt->gp;
-	dump->regs[EF_A0]  = pt->r16;
-	dump->regs[EF_A1]  = pt->r17;
-	dump->regs[EF_A2]  = pt->r18;
-	memcpy((char *)dump->regs + EF_SIZE, sw->fp, 32 * 8);
-}
-EXPORT_SYMBOL(dump_thread);
-
 /*
  * Fill in the user structure for a ELF core dump.
  */
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 4f1a03124a7..436380a5f4c 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -367,35 +367,6 @@ int dump_fpu (struct pt_regs *regs, struct user_fp *fp)
 }
 EXPORT_SYMBOL(dump_fpu);
 
-/*
- * fill in the user structure for a core dump..
- */
-void dump_thread(struct pt_regs * regs, struct user * dump)
-{
-	struct task_struct *tsk = current;
-
-	dump->magic = CMAGIC;
-	dump->start_code = tsk->mm->start_code;
-	dump->start_stack = regs->ARM_sp & ~(PAGE_SIZE - 1);
-
-	dump->u_tsize = (tsk->mm->end_code - tsk->mm->start_code) >> PAGE_SHIFT;
-	dump->u_dsize = (tsk->mm->brk - tsk->mm->start_data + PAGE_SIZE - 1) >> PAGE_SHIFT;
-	dump->u_ssize = 0;
-
-	dump->u_debugreg[0] = tsk->thread.debug.bp[0].address;
-	dump->u_debugreg[1] = tsk->thread.debug.bp[1].address;
-	dump->u_debugreg[2] = tsk->thread.debug.bp[0].insn.arm;
-	dump->u_debugreg[3] = tsk->thread.debug.bp[1].insn.arm;
-	dump->u_debugreg[4] = tsk->thread.debug.nsaved;
-
-	if (dump->start_stack < 0x04000000)
-		dump->u_ssize = (0x04000000 - dump->start_stack) >> PAGE_SHIFT;
-
-	dump->regs = *regs;
-	dump->u_fpvalid = dump_fpu (regs, &dump->u_fp);
-}
-EXPORT_SYMBOL(dump_thread);
-
 /*
  * Shuffle the argument into the correct register before calling the
  * thread function.  r1 is the thread argument, r2 is the pointer to
diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c
index f85b928ffac..5f45567318d 100644
--- a/arch/m68k/kernel/process.c
+++ b/arch/m68k/kernel/process.c
@@ -315,53 +315,6 @@ int dump_fpu (struct pt_regs *regs, struct user_m68kfp_struct *fpu)
 }
 EXPORT_SYMBOL(dump_fpu);
 
-/*
- * fill in the user structure for a core dump..
- */
-void dump_thread(struct pt_regs * regs, struct user * dump)
-{
-	struct switch_stack *sw;
-
-/* changed the size calculations - should hopefully work better. lbt */
-	dump->magic = CMAGIC;
-	dump->start_code = 0;
-	dump->start_stack = rdusp() & ~(PAGE_SIZE - 1);
-	dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT;
-	dump->u_dsize = ((unsigned long) (current->mm->brk +
-					  (PAGE_SIZE-1))) >> PAGE_SHIFT;
-	dump->u_dsize -= dump->u_tsize;
-	dump->u_ssize = 0;
-
-	if (dump->start_stack < TASK_SIZE)
-		dump->u_ssize = ((unsigned long) (TASK_SIZE - dump->start_stack)) >> PAGE_SHIFT;
-
-	dump->u_ar0 = offsetof(struct user, regs);
-	sw = ((struct switch_stack *)regs) - 1;
-	dump->regs.d1 = regs->d1;
-	dump->regs.d2 = regs->d2;
-	dump->regs.d3 = regs->d3;
-	dump->regs.d4 = regs->d4;
-	dump->regs.d5 = regs->d5;
-	dump->regs.d6 = sw->d6;
-	dump->regs.d7 = sw->d7;
-	dump->regs.a0 = regs->a0;
-	dump->regs.a1 = regs->a1;
-	dump->regs.a2 = regs->a2;
-	dump->regs.a3 = sw->a3;
-	dump->regs.a4 = sw->a4;
-	dump->regs.a5 = sw->a5;
-	dump->regs.a6 = sw->a6;
-	dump->regs.d0 = regs->d0;
-	dump->regs.orig_d0 = regs->orig_d0;
-	dump->regs.stkadj = regs->stkadj;
-	dump->regs.sr = regs->sr;
-	dump->regs.pc = regs->pc;
-	dump->regs.fmtvec = (regs->format << 12) | regs->vector;
-	/* dump floating point stuff */
-	dump->u_fpvalid = dump_fpu (regs, &dump->m68kfp);
-}
-EXPORT_SYMBOL(dump_thread);
-
 /*
  * sys_execve() executes a new program.
  */
diff --git a/arch/sparc/kernel/process.c b/arch/sparc/kernel/process.c
index 77460e316a0..a248e81caa0 100644
--- a/arch/sparc/kernel/process.c
+++ b/arch/sparc/kernel/process.c
@@ -566,38 +566,6 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
 	return 0;
 }
 
-/*
- * fill in the user structure for a core dump..
- */
-void dump_thread(struct pt_regs * regs, struct user * dump)
-{
-	unsigned long first_stack_page;
-
-	dump->magic = SUNOS_CORE_MAGIC;
-	dump->len = sizeof(struct user);
-	dump->regs.psr = regs->psr;
-	dump->regs.pc = regs->pc;
-	dump->regs.npc = regs->npc;
-	dump->regs.y = regs->y;
-	/* fuck me plenty */
-	memcpy(&dump->regs.regs[0], &regs->u_regs[1], (sizeof(unsigned long) * 15));
-	dump->uexec = current->thread.core_exec;
-	dump->u_tsize = (((unsigned long) current->mm->end_code) -
-		((unsigned long) current->mm->start_code)) & ~(PAGE_SIZE - 1);
-	dump->u_dsize = ((unsigned long) (current->mm->brk + (PAGE_SIZE-1)));
-	dump->u_dsize -= dump->u_tsize;
-	dump->u_dsize &= ~(PAGE_SIZE - 1);
-	first_stack_page = (regs->u_regs[UREG_FP] & ~(PAGE_SIZE - 1));
-	dump->u_ssize = (TASK_SIZE - first_stack_page) & ~(PAGE_SIZE - 1);
-	memcpy(&dump->fpu.fpstatus.fregs.regs[0], &current->thread.float_regs[0], (sizeof(unsigned long) * 32));
-	dump->fpu.fpstatus.fsr = current->thread.fsr;
-	dump->fpu.fpstatus.flags = dump->fpu.fpstatus.extra = 0;
-	dump->fpu.fpstatus.fpq_count = current->thread.fpqdepth;
-	memcpy(&dump->fpu.fpstatus.fpq[0], &current->thread.fpqueue[0],
-	       ((sizeof(unsigned long) * 2) * 16));
-	dump->sigcode = 0;
-}
-
 /*
  * fill in the fpu structure for a core dump.
  */
diff --git a/arch/sparc/kernel/sparc_ksyms.c b/arch/sparc/kernel/sparc_ksyms.c
index ef647acc479..62f6221db74 100644
--- a/arch/sparc/kernel/sparc_ksyms.c
+++ b/arch/sparc/kernel/sparc_ksyms.c
@@ -214,8 +214,6 @@ EXPORT_SYMBOL(kunmap_atomic);
 EXPORT_SYMBOL(svr4_setcontext);
 EXPORT_SYMBOL(svr4_getcontext);
 
-EXPORT_SYMBOL(dump_thread);
-
 /* prom symbols */
 EXPORT_SYMBOL(idprom);
 EXPORT_SYMBOL(prom_root_node);
diff --git a/arch/sparc64/kernel/binfmt_aout32.c b/arch/sparc64/kernel/binfmt_aout32.c
index 92c1b36a2e1..9877f2d7672 100644
--- a/arch/sparc64/kernel/binfmt_aout32.c
+++ b/arch/sparc64/kernel/binfmt_aout32.c
@@ -32,6 +32,7 @@
 #include <asm/uaccess.h>
 #include <asm/pgalloc.h>
 #include <asm/mmu_context.h>
+#include <asm/a.out-core.h>
 
 static int load_aout32_binary(struct linux_binprm *, struct pt_regs * regs);
 static int load_aout32_library(struct file*);
@@ -101,7 +102,7 @@ static int aout32_core_dump(long signr, struct pt_regs *regs, struct file *file,
 	current->flags |= PF_DUMPCORE;
        	strncpy(dump.u_comm, current->comm, sizeof(dump.u_comm));
 	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/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c
index ca7cdfd55f7..6e21785bb36 100644
--- a/arch/sparc64/kernel/process.c
+++ b/arch/sparc64/kernel/process.c
@@ -725,17 +725,6 @@ pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
 	return retval;
 }
 
-/*
- * fill in the user structure for a core dump..
- */
-void dump_thread(struct pt_regs * regs, struct user * dump)
-{
-	/* Only should be used for SunOS and ancient a.out
-	 * SparcLinux binaries...  Not worth implementing.
-	 */
-	memset(dump, 0, sizeof(struct user));
-}
-
 typedef struct {
 	union {
 		unsigned int	pr_regs[32];
diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index 5311ee93ede..19ce9dbf46c 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -60,7 +60,6 @@ EXPORT_SYMBOL(os_accept_connection);
 EXPORT_SYMBOL(os_rcv_fd);
 EXPORT_SYMBOL(run_helper);
 EXPORT_SYMBOL(start_thread);
-EXPORT_SYMBOL(dump_thread);
 
 #ifdef CONFIG_SMP
 
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index c07961bedb7..fc50d2f959d 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -258,10 +258,6 @@ void cpu_idle(void)
 	default_idle();
 }
 
-void dump_thread(struct pt_regs *regs, struct user *u)
-{
-}
-
 int __cant_sleep(void) {
 	return in_atomic() || irqs_disabled() || in_interrupt();
 	/* Is in_interrupt() really needed? */
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index dabdbeff1f7..78858068e24 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -539,55 +539,6 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
 	return err;
 }
 
-/*
- * fill in the user structure for a core dump..
- */
-void dump_thread(struct pt_regs * regs, struct user * dump)
-{
-	u16 gs;
-
-/* changed the size calculations - should hopefully work better. lbt */
-	dump->magic = CMAGIC;
-	dump->start_code = 0;
-	dump->start_stack = regs->sp & ~(PAGE_SIZE - 1);
-	dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT;
-	dump->u_dsize = ((unsigned long) (current->mm->brk + (PAGE_SIZE-1))) >> PAGE_SHIFT;
-	dump->u_dsize -= dump->u_tsize;
-	dump->u_ssize = 0;
-	dump->u_debugreg[0] = current->thread.debugreg0;
-	dump->u_debugreg[1] = current->thread.debugreg1;
-	dump->u_debugreg[2] = current->thread.debugreg2;
-	dump->u_debugreg[3] = current->thread.debugreg3;
-	dump->u_debugreg[4] = 0;
-	dump->u_debugreg[5] = 0;
-	dump->u_debugreg[6] = current->thread.debugreg6;
-	dump->u_debugreg[7] = current->thread.debugreg7;
-
-	if (dump->start_stack < TASK_SIZE)
-		dump->u_ssize = ((unsigned long) (TASK_SIZE - dump->start_stack)) >> PAGE_SHIFT;
-
-	dump->regs.bx = regs->bx;
-	dump->regs.cx = regs->cx;
-	dump->regs.dx = regs->dx;
-	dump->regs.si = regs->si;
-	dump->regs.di = regs->di;
-	dump->regs.bp = regs->bp;
-	dump->regs.ax = regs->ax;
-	dump->regs.ds = (u16)regs->ds;
-	dump->regs.es = (u16)regs->es;
-	dump->regs.fs = (u16)regs->fs;
-	savesegment(gs,gs);
-	dump->regs.orig_ax = regs->orig_ax;
-	dump->regs.ip = regs->ip;
-	dump->regs.cs = (u16)regs->cs;
-	dump->regs.flags = regs->flags;
-	dump->regs.sp = regs->sp;
-	dump->regs.ss = (u16)regs->ss;
-
-	dump->u_fpvalid = dump_fpu (regs, &dump->i387);
-}
-EXPORT_SYMBOL(dump_thread);
-
 #ifdef CONFIG_SECCOMP
 static void hard_disable_TSC(void)
 {
diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt
index 7c3d5f923da..b5c3b6114ad 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 7f65e71bf85..a1bb2244cac 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 111771d38e6..a93b1170551 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 927a7c5ef4a..9f9c27224d7 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;
diff --git a/include/asm-alpha/a.out-core.h b/include/asm-alpha/a.out-core.h
new file mode 100644
index 00000000000..9e33e92e524
--- /dev/null
+++ b/include/asm-alpha/a.out-core.h
@@ -0,0 +1,80 @@
+/* a.out coredump register dumper
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_A_OUT_CORE_H
+#define _ASM_A_OUT_CORE_H
+
+#ifdef __KERNEL__
+
+#include <linux/user.h>
+
+/*
+ * Fill in the user structure for an ECOFF core dump.
+ */
+static inline void aout_dump_thread(struct pt_regs *pt, struct user *dump)
+{
+	/* switch stack follows right below pt_regs: */
+	struct switch_stack * sw = ((struct switch_stack *) pt) - 1;
+
+	dump->magic = CMAGIC;
+	dump->start_code  = current->mm->start_code;
+	dump->start_data  = current->mm->start_data;
+	dump->start_stack = rdusp() & ~(PAGE_SIZE - 1);
+	dump->u_tsize = ((current->mm->end_code - dump->start_code)
+			 >> PAGE_SHIFT);
+	dump->u_dsize = ((current->mm->brk + PAGE_SIZE-1 - dump->start_data)
+			 >> PAGE_SHIFT);
+	dump->u_ssize = (current->mm->start_stack - dump->start_stack
+			 + PAGE_SIZE-1) >> PAGE_SHIFT;
+
+	/*
+	 * We store the registers in an order/format that is
+	 * compatible with DEC Unix/OSF/1 as this makes life easier
+	 * for gdb.
+	 */
+	dump->regs[EF_V0]  = pt->r0;
+	dump->regs[EF_T0]  = pt->r1;
+	dump->regs[EF_T1]  = pt->r2;
+	dump->regs[EF_T2]  = pt->r3;
+	dump->regs[EF_T3]  = pt->r4;
+	dump->regs[EF_T4]  = pt->r5;
+	dump->regs[EF_T5]  = pt->r6;
+	dump->regs[EF_T6]  = pt->r7;
+	dump->regs[EF_T7]  = pt->r8;
+	dump->regs[EF_S0]  = sw->r9;
+	dump->regs[EF_S1]  = sw->r10;
+	dump->regs[EF_S2]  = sw->r11;
+	dump->regs[EF_S3]  = sw->r12;
+	dump->regs[EF_S4]  = sw->r13;
+	dump->regs[EF_S5]  = sw->r14;
+	dump->regs[EF_S6]  = sw->r15;
+	dump->regs[EF_A3]  = pt->r19;
+	dump->regs[EF_A4]  = pt->r20;
+	dump->regs[EF_A5]  = pt->r21;
+	dump->regs[EF_T8]  = pt->r22;
+	dump->regs[EF_T9]  = pt->r23;
+	dump->regs[EF_T10] = pt->r24;
+	dump->regs[EF_T11] = pt->r25;
+	dump->regs[EF_RA]  = pt->r26;
+	dump->regs[EF_T12] = pt->r27;
+	dump->regs[EF_AT]  = pt->r28;
+	dump->regs[EF_SP]  = rdusp();
+	dump->regs[EF_PS]  = pt->ps;
+	dump->regs[EF_PC]  = pt->pc;
+	dump->regs[EF_GP]  = pt->gp;
+	dump->regs[EF_A0]  = pt->r16;
+	dump->regs[EF_A1]  = pt->r17;
+	dump->regs[EF_A2]  = pt->r18;
+	memcpy((char *)dump->regs + EF_SIZE, sw->fp, 32 * 8);
+}
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_A_OUT_CORE_H */
diff --git a/include/asm-arm/a.out-core.h b/include/asm-arm/a.out-core.h
new file mode 100644
index 00000000000..93d04acaa31
--- /dev/null
+++ b/include/asm-arm/a.out-core.h
@@ -0,0 +1,49 @@
+/* a.out coredump register dumper
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_A_OUT_CORE_H
+#define _ASM_A_OUT_CORE_H
+
+#ifdef __KERNEL__
+
+#include <linux/user.h>
+#include <linux/elfcore.h>
+
+/*
+ * fill in the user structure for an a.out core dump
+ */
+static inline void aout_dump_thread(struct pt_regs *regs, struct user *dump)
+{
+	struct task_struct *tsk = current;
+
+	dump->magic = CMAGIC;
+	dump->start_code = tsk->mm->start_code;
+	dump->start_stack = regs->ARM_sp & ~(PAGE_SIZE - 1);
+
+	dump->u_tsize = (tsk->mm->end_code - tsk->mm->start_code) >> PAGE_SHIFT;
+	dump->u_dsize = (tsk->mm->brk - tsk->mm->start_data + PAGE_SIZE - 1) >> PAGE_SHIFT;
+	dump->u_ssize = 0;
+
+	dump->u_debugreg[0] = tsk->thread.debug.bp[0].address;
+	dump->u_debugreg[1] = tsk->thread.debug.bp[1].address;
+	dump->u_debugreg[2] = tsk->thread.debug.bp[0].insn.arm;
+	dump->u_debugreg[3] = tsk->thread.debug.bp[1].insn.arm;
+	dump->u_debugreg[4] = tsk->thread.debug.nsaved;
+
+	if (dump->start_stack < 0x04000000)
+		dump->u_ssize = (0x04000000 - dump->start_stack) >> PAGE_SHIFT;
+
+	dump->regs = *regs;
+	dump->u_fpvalid = dump_fpu (regs, &dump->u_fp);
+}
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_A_OUT_CORE_H */
diff --git a/include/asm-frv/a.out.h b/include/asm-frv/a.out.h
deleted file mode 100644
index dd3b7e5754c..00000000000
--- a/include/asm-frv/a.out.h
+++ /dev/null
@@ -1,5 +0,0 @@
-/*
- * FRV doesn't do AOUT format. This header file should be removed as
- * soon as fs/exec.c and fs/proc/kcore.c and the archs that require
- * them to include linux/a.out.h are fixed.
- */
diff --git a/include/asm-generic/Kbuild.asm b/include/asm-generic/Kbuild.asm
index 57ba6063595..fd9dcfd91c3 100644
--- a/include/asm-generic/Kbuild.asm
+++ b/include/asm-generic/Kbuild.asm
@@ -1,4 +1,6 @@
+ifeq ($(wildcard include/asm-$(SRCARCH)/a.out.h),include/asm-$(SRCARCH)/a.out.h)
 unifdef-y += a.out.h
+endif
 unifdef-y += auxvec.h
 unifdef-y += byteorder.h
 unifdef-y += errno.h
diff --git a/include/asm-m68k/a.out-core.h b/include/asm-m68k/a.out-core.h
new file mode 100644
index 00000000000..f6bfc1d63ff
--- /dev/null
+++ b/include/asm-m68k/a.out-core.h
@@ -0,0 +1,67 @@
+/* a.out coredump register dumper
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_A_OUT_CORE_H
+#define _ASM_A_OUT_CORE_H
+
+#ifdef __KERNEL__
+
+#include <linux/user.h>
+#include <linux/elfcore.h>
+
+/*
+ * fill in the user structure for an a.out core dump
+ */
+static inline void aout_dump_thread(struct pt_regs *regs, struct user *dump)
+{
+	struct switch_stack *sw;
+
+/* changed the size calculations - should hopefully work better. lbt */
+	dump->magic = CMAGIC;
+	dump->start_code = 0;
+	dump->start_stack = rdusp() & ~(PAGE_SIZE - 1);
+	dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT;
+	dump->u_dsize = ((unsigned long) (current->mm->brk +
+					  (PAGE_SIZE-1))) >> PAGE_SHIFT;
+	dump->u_dsize -= dump->u_tsize;
+	dump->u_ssize = 0;
+
+	if (dump->start_stack < TASK_SIZE)
+		dump->u_ssize = ((unsigned long) (TASK_SIZE - dump->start_stack)) >> PAGE_SHIFT;
+
+	dump->u_ar0 = offsetof(struct user, regs);
+	sw = ((struct switch_stack *)regs) - 1;
+	dump->regs.d1 = regs->d1;
+	dump->regs.d2 = regs->d2;
+	dump->regs.d3 = regs->d3;
+	dump->regs.d4 = regs->d4;
+	dump->regs.d5 = regs->d5;
+	dump->regs.d6 = sw->d6;
+	dump->regs.d7 = sw->d7;
+	dump->regs.a0 = regs->a0;
+	dump->regs.a1 = regs->a1;
+	dump->regs.a2 = regs->a2;
+	dump->regs.a3 = sw->a3;
+	dump->regs.a4 = sw->a4;
+	dump->regs.a5 = sw->a5;
+	dump->regs.a6 = sw->a6;
+	dump->regs.d0 = regs->d0;
+	dump->regs.orig_d0 = regs->orig_d0;
+	dump->regs.stkadj = regs->stkadj;
+	dump->regs.sr = regs->sr;
+	dump->regs.pc = regs->pc;
+	dump->regs.fmtvec = (regs->format << 12) | regs->vector;
+	/* dump floating point stuff */
+	dump->u_fpvalid = dump_fpu (regs, &dump->m68kfp);
+}
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_A_OUT_CORE_H */
diff --git a/include/asm-sparc/a.out-core.h b/include/asm-sparc/a.out-core.h
new file mode 100644
index 00000000000..e8fd338ed0b
--- /dev/null
+++ b/include/asm-sparc/a.out-core.h
@@ -0,0 +1,52 @@
+/* a.out coredump register dumper
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_A_OUT_CORE_H
+#define _ASM_A_OUT_CORE_H
+
+#ifdef __KERNEL__
+
+#include <linux/user.h>
+
+/*
+ * fill in the user structure for an a.out core dump
+ */
+static inline void aout_dump_thread(struct pt_regs *regs, struct user *dump)
+{
+	unsigned long first_stack_page;
+
+	dump->magic = SUNOS_CORE_MAGIC;
+	dump->len = sizeof(struct user);
+	dump->regs.psr = regs->psr;
+	dump->regs.pc = regs->pc;
+	dump->regs.npc = regs->npc;
+	dump->regs.y = regs->y;
+	/* fuck me plenty */
+	memcpy(&dump->regs.regs[0], &regs->u_regs[1], (sizeof(unsigned long) * 15));
+	dump->uexec = current->thread.core_exec;
+	dump->u_tsize = (((unsigned long) current->mm->end_code) -
+		((unsigned long) current->mm->start_code)) & ~(PAGE_SIZE - 1);
+	dump->u_dsize = ((unsigned long) (current->mm->brk + (PAGE_SIZE-1)));
+	dump->u_dsize -= dump->u_tsize;
+	dump->u_dsize &= ~(PAGE_SIZE - 1);
+	first_stack_page = (regs->u_regs[UREG_FP] & ~(PAGE_SIZE - 1));
+	dump->u_ssize = (TASK_SIZE - first_stack_page) & ~(PAGE_SIZE - 1);
+	memcpy(&dump->fpu.fpstatus.fregs.regs[0], &current->thread.float_regs[0], (sizeof(unsigned long) * 32));
+	dump->fpu.fpstatus.fsr = current->thread.fsr;
+	dump->fpu.fpstatus.flags = dump->fpu.fpstatus.extra = 0;
+	dump->fpu.fpstatus.fpq_count = current->thread.fpqdepth;
+	memcpy(&dump->fpu.fpstatus.fpq[0], &current->thread.fpqueue[0],
+	       ((sizeof(unsigned long) * 2) * 16));
+	dump->sigcode = 0;
+}
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_A_OUT_CORE_H */
diff --git a/include/asm-sparc64/a.out-core.h b/include/asm-sparc64/a.out-core.h
new file mode 100644
index 00000000000..3499b3c425c
--- /dev/null
+++ b/include/asm-sparc64/a.out-core.h
@@ -0,0 +1,31 @@
+/* a.out coredump register dumper
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_A_OUT_CORE_H
+#define _ASM_A_OUT_CORE_H
+
+#ifdef __KERNEL__
+
+#include <linux/user.h>
+
+/*
+ * fill in the user structure for an a.out core dump
+ */
+static inline void aout_dump_thread(struct pt_regs *regs, struct user *dump)
+{
+	/* Only should be used for SunOS and ancient a.out
+	 * SparcLinux binaries...  Not worth implementing.
+	 */
+	memset(dump, 0, sizeof(struct user));
+}
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_A_OUT_CORE_H */
diff --git a/include/asm-um/a.out-core.h b/include/asm-um/a.out-core.h
new file mode 100644
index 00000000000..995643b1830
--- /dev/null
+++ b/include/asm-um/a.out-core.h
@@ -0,0 +1,27 @@
+/* a.out coredump register dumper
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef __UM_A_OUT_CORE_H
+#define __UM_A_OUT_CORE_H
+
+#ifdef __KERNEL__
+
+#include <linux/user.h>
+
+/*
+ * fill in the user structure for an a.out core dump
+ */
+static inline void aout_dump_thread(struct pt_regs *regs, struct user *u)
+{
+}
+
+#endif /* __KERNEL__ */
+#endif /* __UM_A_OUT_CORE_H */
diff --git a/include/asm-x86/a.out-core.h b/include/asm-x86/a.out-core.h
new file mode 100644
index 00000000000..d2b6e11d3e9
--- /dev/null
+++ b/include/asm-x86/a.out-core.h
@@ -0,0 +1,71 @@
+/* a.out coredump register dumper
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_A_OUT_CORE_H
+#define _ASM_A_OUT_CORE_H
+
+#ifdef __KERNEL__
+#ifdef CONFIG_X86_32
+
+#include <linux/user.h>
+#include <linux/elfcore.h>
+
+/*
+ * fill in the user structure for an a.out core dump
+ */
+static inline void aout_dump_thread(struct pt_regs *regs, struct user *dump)
+{
+	u16 gs;
+
+/* changed the size calculations - should hopefully work better. lbt */
+	dump->magic = CMAGIC;
+	dump->start_code = 0;
+	dump->start_stack = regs->sp & ~(PAGE_SIZE - 1);
+	dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT;
+	dump->u_dsize = ((unsigned long) (current->mm->brk + (PAGE_SIZE-1))) >> PAGE_SHIFT;
+	dump->u_dsize -= dump->u_tsize;
+	dump->u_ssize = 0;
+	dump->u_debugreg[0] = current->thread.debugreg0;
+	dump->u_debugreg[1] = current->thread.debugreg1;
+	dump->u_debugreg[2] = current->thread.debugreg2;
+	dump->u_debugreg[3] = current->thread.debugreg3;
+	dump->u_debugreg[4] = 0;
+	dump->u_debugreg[5] = 0;
+	dump->u_debugreg[6] = current->thread.debugreg6;
+	dump->u_debugreg[7] = current->thread.debugreg7;
+
+	if (dump->start_stack < TASK_SIZE)
+		dump->u_ssize = ((unsigned long) (TASK_SIZE - dump->start_stack)) >> PAGE_SHIFT;
+
+	dump->regs.bx = regs->bx;
+	dump->regs.cx = regs->cx;
+	dump->regs.dx = regs->dx;
+	dump->regs.si = regs->si;
+	dump->regs.di = regs->di;
+	dump->regs.bp = regs->bp;
+	dump->regs.ax = regs->ax;
+	dump->regs.ds = (u16)regs->ds;
+	dump->regs.es = (u16)regs->es;
+	dump->regs.fs = (u16)regs->fs;
+	savesegment(gs,gs);
+	dump->regs.orig_ax = regs->orig_ax;
+	dump->regs.ip = regs->ip;
+	dump->regs.cs = (u16)regs->cs;
+	dump->regs.flags = regs->flags;
+	dump->regs.sp = regs->sp;
+	dump->regs.ss = (u16)regs->ss;
+
+	dump->u_fpvalid = dump_fpu (regs, &dump->i387);
+}
+
+#endif /* CONFIG_X86_32 */
+#endif /* __KERNEL__ */
+#endif /* _ASM_A_OUT_CORE_H */
diff --git a/include/linux/a.out.h b/include/linux/a.out.h
index 82cd918f2ab..208f4e8ed30 100644
--- a/include/linux/a.out.h
+++ b/include/linux/a.out.h
@@ -1,6 +1,8 @@
 #ifndef __A_OUT_GNU_H__
 #define __A_OUT_GNU_H__
 
+#ifdef CONFIG_ARCH_SUPPORTS_AOUT
+
 #define __GNU_EXEC_MACROS__
 
 #ifndef __STRUCT_EXEC_OVERRIDE__
@@ -9,6 +11,8 @@
 
 #endif /* __STRUCT_EXEC_OVERRIDE__ */
 
+#ifndef __ASSEMBLY__
+
 /* these go in the N_MACHTYPE field */
 enum machine_type {
 #if defined (M_OLDSUN2)
@@ -272,5 +276,11 @@ struct relocation_info
 };
 #endif /* no N_RELOCATION_INFO_DECLARED.  */
 
-
+#endif /*__ASSEMBLY__ */
+#else /* CONFIG_ARCH_SUPPORTS_AOUT */
+#ifndef __ASSEMBLY__
+struct exec {
+};
+#endif
+#endif /* CONFIG_ARCH_SUPPORTS_AOUT */
 #endif /* __A_OUT_GNU_H__ */
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 9e01f376840..568042290c0 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -172,8 +172,6 @@ extern int kernel_text_address(unsigned long addr);
 struct pid;
 extern struct pid *session_of_pgrp(struct pid *pgrp);
 
-extern void dump_thread(struct pt_regs *regs, struct user *dump);
-
 #ifdef CONFIG_PRINTK
 asmlinkage int vprintk(const char *fmt, va_list args)
 	__attribute__ ((format (printf, 1, 0)));