linux/arch/m68k/include/asm/ptrace.h

#ifndef _M68K_PTRACE_H
#define _M68K_PTRACE_H

#include <uapi/asm/ptrace.h>

#ifndef __ASSEMBLY__

#ifndef PS_S
#define PS_S  (0x2000)
#define PS_M  (0x1000)
#endif

#define user_mode(regs) (!((regs)->sr & PS_S))
#define instruction_pointer(regs) ((regs)->pc)
#define profile_pc(regs) instruction_pointer(regs)
#define current_pt_regs() \
	(struct pt_regs *)((char *)current_thread_info() + THREAD_SIZE) - 1
#define current_user_stack_pointer() rdusp()

#define arch_has_single_step()	(1)

#ifdef CONFIG_MMU
#define arch_has_block_step()	(1)
#endif

#endif /* __ASSEMBLY__ */
#endif /* _M68K_PTRACE_H */
m68k: merge the non-MMU and MMU versions of ptrace.h It is trivial to merge the non-MMU and MMU versions of ptrace.h. Without a single file "make headers_install" is broken for m68k (since each of the sub-varients of ptrace.h are not installed). Signed-off-by: Greg Ungerer <gerg@uclinux.org> 2009-03-16 12:07:39 +00:00			`#ifndef _M68K_PTRACE_H`
			`#define _M68K_PTRACE_H`

UAPI: (Scripted) Disintegrate arch/m68k/include/asm Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com> 2012-10-09 08:47:06 +00:00			`#include <uapi/asm/ptrace.h>`
m68k: merge the non-MMU and MMU versions of ptrace.h It is trivial to merge the non-MMU and MMU versions of ptrace.h. Without a single file "make headers_install" is broken for m68k (since each of the sub-varients of ptrace.h are not installed). Signed-off-by: Greg Ungerer <gerg@uclinux.org> 2009-03-16 12:07:39 +00:00
			`#ifndef __ASSEMBLY__`

			`#ifndef PS_S`
			`#define PS_S (0x2000)`
			`#define PS_M (0x1000)`
			`#endif`

			`#define user_mode(regs) (!((regs)->sr & PS_S))`
			`#define instruction_pointer(regs) ((regs)->pc)`
			`#define profile_pc(regs) instruction_pointer(regs)`
m68k: switch to generic sys_execve()/kernel_execve() The tricky part here is that task_pt_regs() on m68k works only for process inside do_signal(). However, we need something much simpler - pt_regs of a process inside do_signal() may be at different offsets from the stack bottom, depending on the way we'd entered the kernel, but for a task inside sys_execve() it is at constant offset. Moreover, for a kernel thread about to become a userland process the same location is also fine - setting sp to that will leave the kernel stack pointer at the very bottom of the kernel stack when we finally switch to userland. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 2012-09-16 16:06:34 +00:00			`#define current_pt_regs() \`
			`(struct pt_regs )((char )current_thread_info() + THREAD_SIZE) - 1`
new helper: current_user_stack_pointer() Cross-architecture equivalent of rdusp(); default is user_stack_pointer(current_pt_regs()) - that works for almost all platforms that have usp saved in pt_regs. The only exception from that is ia64 - we want memory stack, not the backing store for register one. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 2012-11-18 17:50:10 +00:00			`#define current_user_stack_pointer() rdusp()`
m68k: use generic code for ptrace requests Remove all but PTRACE_{PEEK,POKE}USR and PTRACE_{GET,SET}{REGS,FPREGS} from arch_ptrace and let the rest be handled by generic code. Define PTRACE_SINGLEBLOCK to enable singleblock tracing. [Geert] Not yet applicable for m68knommu Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> 2009-05-10 19:14:52 +00:00
			`#define arch_has_single_step() (1)`

m68knommu: define arch_has_single_step() and friends Towards adding CONFIG_UTRACE support for non-mmu m68k add arch_has_single_step, and its support functions user_enable_single_step() and user_disable_single_step(). [Geert] m68k conflict resolution from linux-next Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> 2009-07-07 05:54:54 +00:00			`#ifdef CONFIG_MMU`
m68k: use generic code for ptrace requests Remove all but PTRACE_{PEEK,POKE}USR and PTRACE_{GET,SET}{REGS,FPREGS} from arch_ptrace and let the rest be handled by generic code. Define PTRACE_SINGLEBLOCK to enable singleblock tracing. [Geert] Not yet applicable for m68knommu Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> 2009-05-10 19:14:52 +00:00			`#define arch_has_block_step() (1)`
			`#endif`

m68k: merge the non-MMU and MMU versions of ptrace.h It is trivial to merge the non-MMU and MMU versions of ptrace.h. Without a single file "make headers_install" is broken for m68k (since each of the sub-varients of ptrace.h are not installed). Signed-off-by: Greg Ungerer <gerg@uclinux.org> 2009-03-16 12:07:39 +00:00			`#endif /* __ASSEMBLY__ */`
			`#endif /* _M68K_PTRACE_H */`