Commit 5d289964 authored by David Howells's avatar David Howells Committed by Linus Torvalds
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MN10300: Add utrace/tracehooks support 



Add utrace/tracehooks support to MN10300.

Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent fd4f683d

arch/mn10300/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ mainmenu "Linux Kernel Configuration" 
config MN10300

	def_bool y

	select HAVE_OPROFILE

	select HAVE_ARCH_TRACEHOOK



config AM33

	def_bool y

arch/mn10300/include/asm/elf.h

+2 −1
Original line number Diff line number Diff line
@@ -34,7 +34,7 @@ 
 */

typedef unsigned long elf_greg_t;



#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))

#define ELF_NGREG ((sizeof(struct pt_regs) / sizeof(elf_greg_t)) - 1)

typedef elf_greg_t elf_gregset_t[ELF_NGREG];



#define ELF_NFPREG 32
@@ -76,6 +76,7 @@ do { \ 
} while (0)



#define USE_ELF_CORE_DUMP

#define CORE_DUMP_USE_REGSET

#define ELF_EXEC_PAGESIZE	4096



/*

arch/mn10300/include/asm/processor.h

+1 −7
Original line number Diff line number Diff line
@@ -143,13 +143,7 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk); 


unsigned long get_wchan(struct task_struct *p);



#define task_pt_regs(task)						\

({									\

       struct pt_regs *__regs__;					\

       __regs__ = (struct pt_regs *) (KSTK_TOP(task_stack_page(task)) - 8); \

       __regs__ - 1;							\

})



#define task_pt_regs(task) ((task)->thread.uregs)

#define KSTK_EIP(task) (task_pt_regs(task)->pc)

#define KSTK_ESP(task) (task_pt_regs(task)->sp)

arch/mn10300/include/asm/ptrace.h

+8 −0
Original line number Diff line number Diff line
@@ -91,9 +91,17 @@ extern struct pt_regs *__frame; /* current frame pointer */ 
#if defined(__KERNEL__)



#if !defined(__ASSEMBLY__)

struct task_struct;



#define user_mode(regs)			(((regs)->epsw & EPSW_nSL) == EPSW_nSL)

#define instruction_pointer(regs)	((regs)->pc)

#define user_stack_pointer(regs)	((regs)->sp)

extern void show_regs(struct pt_regs *);



#define arch_has_single_step()	(1)

extern void user_enable_single_step(struct task_struct *);

extern void user_disable_single_step(struct task_struct *);



#endif  /*  !__ASSEMBLY  */



#define profile_pc(regs) ((regs)->pc)

arch/mn10300/kernel/entry.S

+5 −8
Original line number Diff line number Diff line
@@ -76,7 +76,7 @@ ENTRY(system_call) 
	cmp	nr_syscalls,d0

	bcc	syscall_badsys

	btst	_TIF_SYSCALL_TRACE,(TI_flags,a2)

	bne	syscall_trace_entry

	bne	syscall_entry_trace

syscall_call:

	add	d0,d0,a1

	add	a1,a1
@@ -104,11 +104,10 @@ restore_all: 
syscall_exit_work:

	btst	_TIF_SYSCALL_TRACE,d2

	beq	work_pending

	__sti				# could let do_syscall_trace() call

	__sti				# could let syscall_trace_exit() call

					# schedule() instead

	mov	fp,d0

	mov	1,d1

	call	do_syscall_trace[],0	# do_syscall_trace(regs,entryexit)

	call	syscall_trace_exit[],0	# do_syscall_trace(regs)

	jmp	resume_userspace



	ALIGN
@@ -138,13 +137,11 @@ work_notifysig: 
	jmp	resume_userspace



	# perform syscall entry tracing

syscall_trace_entry:

syscall_entry_trace:

	mov	-ENOSYS,d0

	mov	d0,(REG_D0,fp)

	mov	fp,d0

	clr	d1

	call	do_syscall_trace[],0

	mov	(REG_ORIG_D0,fp),d0

	call	syscall_trace_entry[],0	# returns the syscall number to actually use

	mov	(REG_D1,fp),d1

	cmp	nr_syscalls,d0

	bcs	syscall_call