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MN10300: Add utrace/tracehooks support

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Add utrace/tracehooks support to MN10300.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Howells
2009-06-11 13:08:37 +01:00
committed by Linus Torvalds
parent fd4f683d04
commit 5d289964e1
7 changed files with 263 additions and 245 deletions
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arch/mn10300/Kconfig
+1
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@@ -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
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@@ -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
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@@ -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
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@@ -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
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@@ -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
arch/mn10300/kernel/ptrace.c
+238 -230
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File diff suppressed because it is too large Load Diff
arch/mn10300/kernel/signal.c
+9
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@@ -23,6 +23,7 @@
#include <linux/tty.h>
#include <linux/personality.h>
#include <linux/suspend.h>
#include <linux/tracehook.h>
#include <asm/cacheflush.h>
#include <asm/ucontext.h>
#include <asm/uaccess.h>
@@ -511,6 +512,9 @@ static void do_signal(struct pt_regs *regs)
* clear the TIF_RESTORE_SIGMASK flag */
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
tracehook_signal_handler(signr, &info, &ka, regs,
test_thread_flag(TIF_SINGLESTEP));
}
return;
@@ -561,4 +565,9 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags)
/* deal with pending signal delivery */
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
do_signal(regs);
if (thread_info_flags & _TIF_NOTIFY_RESUME) {
clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(__frame);
}
}