Blackfin arch: remove dump_thread()

The only user is the a.out support.

It was therefore removed prior to the blackfin merge from all
architectures not supporting a.out.

Currently, Blackfin doesn't suppport a.out.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

arch/blackfin/kernel/bfin_ksyms.c

@@ -39,7 +39,6 @@
 EXPORT_SYMBOL(__ioremap);
 EXPORT_SYMBOL(strcmp);
 EXPORT_SYMBOL(strncmp);
-EXPORT_SYMBOL(dump_thread);
 
 EXPORT_SYMBOL(ip_fast_csum);
 

arch/blackfin/kernel/process.c

@@ -238,51 +238,6 @@ copy_thread(int nr, unsigned long clone_flags,
 	return 0;
 }
 
-/*
- * fill in the user structure for a core dump..
- */
-void dump_thread(struct pt_regs *regs, struct user *dump)
-{
-	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 = (struct user_regs_struct *)((int)&dump->regs - (int)dump);
-
-	dump->regs.r0 = regs->r0;
-	dump->regs.r1 = regs->r1;
-	dump->regs.r2 = regs->r2;
-	dump->regs.r3 = regs->r3;
-	dump->regs.r4 = regs->r4;
-	dump->regs.r5 = regs->r5;
-	dump->regs.r6 = regs->r6;
-	dump->regs.r7 = regs->r7;
-	dump->regs.p0 = regs->p0;
-	dump->regs.p1 = regs->p1;
-	dump->regs.p2 = regs->p2;
-	dump->regs.p3 = regs->p3;
-	dump->regs.p4 = regs->p4;
-	dump->regs.p5 = regs->p5;
-	dump->regs.orig_p0 = regs->orig_p0;
-	dump->regs.a0w = regs->a0w;
-	dump->regs.a1w = regs->a1w;
-	dump->regs.a0x = regs->a0x;
-	dump->regs.a1x = regs->a1x;
-	dump->regs.rets = regs->rets;
-	dump->regs.astat = regs->astat;
-	dump->regs.pc = regs->pc;
-}
-
 /*
  * sys_execve() executes a new program.
  */

include/asm-blackfin/bfin-global.h

@@ -50,7 +50,6 @@ extern unsigned long get_sclk(void);
 extern unsigned long sclk_to_usecs(unsigned long sclk);
 extern unsigned long usecs_to_sclk(unsigned long usecs);
 
-extern void dump_thread(struct pt_regs *regs, struct user *dump);
 extern void dump_bfin_regs(struct pt_regs *fp, void *retaddr);
 extern void dump_bfin_trace_buffer(void);