diff options
Diffstat (limited to 'arch')
27 files changed, 301 insertions, 165 deletions
diff --git a/arch/cris/Makefile b/arch/cris/Makefile index 838cd2ae03ae..c6f5f5a2ffdf 100644 --- a/arch/cris/Makefile +++ b/arch/cris/Makefile @@ -10,6 +10,8 @@ # License. See the file "COPYING" in the main directory of this archive # for more details. +KBUILD_DEFCONFIG := etrax-100lx_v2_defconfig + arch-y := v10 arch-$(CONFIG_ETRAX_ARCH_V10) := v10 arch-$(CONFIG_ETRAX_ARCH_V32) := v32 diff --git a/arch/cris/arch-v10/boot/compressed/Makefile b/arch/cris/arch-v10/boot/compressed/Makefile index 08d943ce4be7..6fe0ffaf3be6 100644 --- a/arch/cris/arch-v10/boot/compressed/Makefile +++ b/arch/cris/arch-v10/boot/compressed/Makefile @@ -4,7 +4,7 @@ asflags-y += $(LINUXINCLUDE) ccflags-y += -O2 $(LINUXINCLUDE) -ldflags-y += -T $(srctree)/$(obj)/decompress.ld +ldflags-y += -T $(srctree)/$(src)/decompress.lds OBJECTS = $(obj)/head.o $(obj)/misc.o OBJCOPYFLAGS = -O binary --remove-section=.bss diff --git a/arch/cris/arch-v10/boot/compressed/decompress.ld b/arch/cris/arch-v10/boot/compressed/decompress.lds index e80f4594d543..e80f4594d543 100644 --- a/arch/cris/arch-v10/boot/compressed/decompress.ld +++ b/arch/cris/arch-v10/boot/compressed/decompress.lds diff --git a/arch/cris/arch-v10/boot/rescue/Makefile b/arch/cris/arch-v10/boot/rescue/Makefile index 07688da92708..82ab59b968e5 100644 --- a/arch/cris/arch-v10/boot/rescue/Makefile +++ b/arch/cris/arch-v10/boot/rescue/Makefile @@ -4,7 +4,7 @@ ccflags-y += -O2 $(LINUXINCLUDE) asflags-y += $(LINUXINCLUDE) -ldflags-y += -T $(srctree)/$(obj)/rescue.ld +ldflags-y += -T $(srctree)/$(src)/rescue.lds OBJCOPYFLAGS = -O binary --remove-section=.bss obj-$(CONFIG_ETRAX_AXISFLASHMAP) = head.o OBJECT := $(obj)/head.o diff --git a/arch/cris/arch-v10/boot/rescue/rescue.ld b/arch/cris/arch-v10/boot/rescue/rescue.lds index 0b52a9490db6..0b52a9490db6 100644 --- a/arch/cris/arch-v10/boot/rescue/rescue.ld +++ b/arch/cris/arch-v10/boot/rescue/rescue.lds diff --git a/arch/cris/arch-v32/boot/compressed/Makefile b/arch/cris/arch-v32/boot/compressed/Makefile index d6335f26083b..5a1b31c99eaa 100644 --- a/arch/cris/arch-v32/boot/compressed/Makefile +++ b/arch/cris/arch-v32/boot/compressed/Makefile @@ -4,7 +4,7 @@ asflags-y += -I $(srctree)/include/asm/mach/ -I $(srctree)/include/asm/arch ccflags-y += -O2 -I $(srctree)/include/asm/mach/ -I $(srctree)/include/asm/arch -ldflags-y += -T $(srctree)/$(obj)/decompress.ld +ldflags-y += -T $(srctree)/$(src)/decompress.lds OBJECTS = $(obj)/head.o $(obj)/misc.o OBJCOPYFLAGS = -O binary --remove-section=.bss diff --git a/arch/cris/arch-v32/boot/compressed/decompress.ld b/arch/cris/arch-v32/boot/compressed/decompress.lds index 3c837feca3ac..3c837feca3ac 100644 --- a/arch/cris/arch-v32/boot/compressed/decompress.ld +++ b/arch/cris/arch-v32/boot/compressed/decompress.lds diff --git a/arch/cris/arch-v32/boot/rescue/Makefile b/arch/cris/arch-v32/boot/rescue/Makefile index 44ae0ad61f90..566aac663a38 100644 --- a/arch/cris/arch-v32/boot/rescue/Makefile +++ b/arch/cris/arch-v32/boot/rescue/Makefile @@ -7,7 +7,7 @@ ccflags-y += -O2 -I $(srctree)/include/asm/arch/mach/ \ -I $(srctree)/include/asm/arch asflags-y += -I $(srctree)/include/asm/arch/mach/ -I $(srctree)/include/asm/arch LD = gcc-cris -mlinux -march=v32 -nostdlib -ldflags-y += -T $(srctree)/$(obj)/rescue.ld +ldflags-y += -T $(srctree)/$(src)/rescue.lds LDPOSTFLAGS = -lgcc OBJCOPYFLAGS = -O binary --remove-section=.bss obj-$(CONFIG_ETRAX_AXISFLASHMAP) = head.o diff --git a/arch/cris/arch-v32/boot/rescue/rescue.ld b/arch/cris/arch-v32/boot/rescue/rescue.lds index 8ac646bc1a2b..8ac646bc1a2b 100644 --- a/arch/cris/arch-v32/boot/rescue/rescue.ld +++ b/arch/cris/arch-v32/boot/rescue/rescue.lds diff --git a/arch/cris/artpec_3_defconfig b/arch/cris/configs/artpec_3_defconfig index 41fe67409aab..41fe67409aab 100644 --- a/arch/cris/artpec_3_defconfig +++ b/arch/cris/configs/artpec_3_defconfig diff --git a/arch/cris/arch-v10/defconfig b/arch/cris/configs/etrax-100lx_defconfig index 572f11926399..572f11926399 100644 --- a/arch/cris/arch-v10/defconfig +++ b/arch/cris/configs/etrax-100lx_defconfig diff --git a/arch/cris/defconfig b/arch/cris/configs/etrax-100lx_v2_defconfig index 59f36a58f842..59f36a58f842 100644 --- a/arch/cris/defconfig +++ b/arch/cris/configs/etrax-100lx_v2_defconfig diff --git a/arch/cris/etraxfs_defconfig b/arch/cris/configs/etraxfs_defconfig index 73c646a37255..73c646a37255 100644 --- a/arch/cris/etraxfs_defconfig +++ b/arch/cris/configs/etraxfs_defconfig diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 9318dee22537..239ad6b1c74f 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -21,6 +21,7 @@ config IA64 select HAVE_KRETPROBES select HAVE_DMA_ATTRS select HAVE_KVM + select HAVE_ARCH_TRACEHOOK default y help The Itanium Processor Family is Intel's 64-bit successor to diff --git a/arch/ia64/ia32/ia32_entry.S b/arch/ia64/ia32/ia32_entry.S index 53505bb04771..a8cf19958850 100644 --- a/arch/ia64/ia32/ia32_entry.S +++ b/arch/ia64/ia32/ia32_entry.S @@ -108,6 +108,11 @@ GLOBAL_ENTRY(ia32_trace_syscall) ;; st8 [r2]=r3 // initialize return code to -ENOSYS br.call.sptk.few rp=syscall_trace_enter // give parent a chance to catch syscall args + cmp.lt p6,p0=r8,r0 // check tracehook + adds r2=IA64_PT_REGS_R8_OFFSET+16,sp // r2 = &pt_regs.r8 + ;; +(p6) st8.spill [r2]=r8 // store return value in slot for r8 +(p6) br.spnt.few .ret4 .ret2: // Need to reload arguments (they may be changed by the tracing process) adds r2=IA64_PT_REGS_R1_OFFSET+16,sp // r2 = &pt_regs.r1 adds r3=IA64_PT_REGS_R13_OFFSET+16,sp // r3 = &pt_regs.r13 @@ -199,10 +204,10 @@ ia32_syscall_table: data8 sys_setuid /* 16-bit version */ data8 sys_getuid /* 16-bit version */ data8 compat_sys_stime /* 25 */ - data8 sys32_ptrace + data8 compat_sys_ptrace data8 sys32_alarm data8 sys_ni_syscall - data8 sys32_pause + data8 sys_pause data8 compat_sys_utime /* 30 */ data8 sys_ni_syscall /* old stty syscall holder */ data8 sys_ni_syscall /* old gtty syscall holder */ @@ -215,7 +220,7 @@ ia32_syscall_table: data8 sys_mkdir data8 sys_rmdir /* 40 */ data8 sys_dup - data8 sys32_pipe + data8 sys_pipe data8 compat_sys_times data8 sys_ni_syscall /* old prof syscall holder */ data8 sys32_brk /* 45 */ diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c index f4430bb4bbdc..5e92ae00bdbb 100644 --- a/arch/ia64/ia32/sys_ia32.c +++ b/arch/ia64/ia32/sys_ia32.c @@ -1098,21 +1098,6 @@ sys32_mremap (unsigned int addr, unsigned int old_len, unsigned int new_len, return ret; } -asmlinkage long -sys32_pipe (int __user *fd) -{ - int retval; - int fds[2]; - - retval = do_pipe_flags(fds, 0); - if (retval) - goto out; - if (copy_to_user(fd, fds, sizeof(fds))) - retval = -EFAULT; - out: - return retval; -} - asmlinkage unsigned long sys32_alarm (unsigned int seconds) { @@ -1209,25 +1194,6 @@ sys32_waitpid (int pid, unsigned int *stat_addr, int options) return compat_sys_wait4(pid, stat_addr, options, NULL); } -static unsigned int -ia32_peek (struct task_struct *child, unsigned long addr, unsigned int *val) -{ - size_t copied; - unsigned int ret; - - copied = access_process_vm(child, addr, val, sizeof(*val), 0); - return (copied != sizeof(ret)) ? -EIO : 0; -} - -static unsigned int -ia32_poke (struct task_struct *child, unsigned long addr, unsigned int val) -{ - - if (access_process_vm(child, addr, &val, sizeof(val), 1) != sizeof(val)) - return -EIO; - return 0; -} - /* * The order in which registers are stored in the ptrace regs structure */ @@ -1525,49 +1491,15 @@ restore_ia32_fpxstate (struct task_struct *tsk, struct ia32_user_fxsr_struct __u return 0; } -asmlinkage long -sys32_ptrace (int request, pid_t pid, unsigned int addr, unsigned int data) +long compat_arch_ptrace(struct task_struct *child, compat_long_t request, + compat_ulong_t caddr, compat_ulong_t cdata) { - struct task_struct *child; - unsigned int value, tmp; + unsigned long addr = caddr; + unsigned long data = cdata; + unsigned int tmp; long i, ret; - lock_kernel(); - if (request == PTRACE_TRACEME) { - ret = ptrace_traceme(); - goto out; - } - - child = ptrace_get_task_struct(pid); - if (IS_ERR(child)) { - ret = PTR_ERR(child); - goto out; - } - - if (request == PTRACE_ATTACH) { - ret = sys_ptrace(request, pid, addr, data); - goto out_tsk; - } - - ret = ptrace_check_attach(child, request == PTRACE_KILL); - if (ret < 0) - goto out_tsk; - switch (request) { - case PTRACE_PEEKTEXT: - case PTRACE_PEEKDATA: /* read word at location addr */ - ret = ia32_peek(child, addr, &value); - if (ret == 0) - ret = put_user(value, (unsigned int __user *) compat_ptr(data)); - else - ret = -EIO; - goto out_tsk; - - case PTRACE_POKETEXT: - case PTRACE_POKEDATA: /* write the word at location addr */ - ret = ia32_poke(child, addr, data); - goto out_tsk; - case PTRACE_PEEKUSR: /* read word at addr in USER area */ ret = -EIO; if ((addr & 3) || addr > 17*sizeof(int)) @@ -1632,27 +1564,9 @@ sys32_ptrace (int request, pid_t pid, unsigned int addr, unsigned int data) compat_ptr(data)); break; - case PTRACE_GETEVENTMSG: - ret = put_user(child->ptrace_message, (unsigned int __user *) compat_ptr(data)); - break; - - case PTRACE_SYSCALL: /* continue, stop after next syscall */ - case PTRACE_CONT: /* restart after signal. */ - case PTRACE_KILL: - case PTRACE_SINGLESTEP: /* execute chile for one instruction */ - case PTRACE_DETACH: /* detach a process */ - ret = sys_ptrace(request, pid, addr, data); - break; - default: - ret = ptrace_request(child, request, addr, data); - break; - + return compat_ptrace_request(child, request, caddr, cdata); } - out_tsk: - put_task_struct(child); - out: - unlock_kernel(); return ret; } @@ -1704,14 +1618,6 @@ out: } asmlinkage int -sys32_pause (void) -{ - current->state = TASK_INTERRUPTIBLE; - schedule(); - return -ERESTARTNOHAND; -} - -asmlinkage int sys32_msync (unsigned int start, unsigned int len, int flags) { unsigned int addr; diff --git a/arch/ia64/include/asm/kregs.h b/arch/ia64/include/asm/kregs.h index aefcdfee7f23..39e65f6639f5 100644 --- a/arch/ia64/include/asm/kregs.h +++ b/arch/ia64/include/asm/kregs.h @@ -32,7 +32,7 @@ #define IA64_TR_CURRENT_STACK 1 /* dtr1: maps kernel's memory- & register-stacks */ #define IA64_TR_ALLOC_BASE 2 /* itr&dtr: Base of dynamic TR resource*/ -#define IA64_TR_ALLOC_MAX 32 /* Max number for dynamic use*/ +#define IA64_TR_ALLOC_MAX 64 /* Max number for dynamic use*/ /* Processor status register bits: */ #define IA64_PSR_BE_BIT 1 diff --git a/arch/ia64/include/asm/ptrace.h b/arch/ia64/include/asm/ptrace.h index 15f8dcfe6eee..6417c1ecb44e 100644 --- a/arch/ia64/include/asm/ptrace.h +++ b/arch/ia64/include/asm/ptrace.h @@ -240,6 +240,12 @@ struct switch_stack { */ # define instruction_pointer(regs) ((regs)->cr_iip + ia64_psr(regs)->ri) +static inline unsigned long user_stack_pointer(struct pt_regs *regs) +{ + /* FIXME: should this be bspstore + nr_dirty regs? */ + return regs->ar_bspstore; +} + #define regs_return_value(regs) ((regs)->r8) /* Conserve space in histogram by encoding slot bits in address @@ -319,6 +325,8 @@ struct switch_stack { #define arch_has_block_step() (1) extern void user_enable_block_step(struct task_struct *); +#define __ARCH_WANT_COMPAT_SYS_PTRACE + #endif /* !__KERNEL__ */ /* pt_all_user_regs is used for PTRACE_GETREGS PTRACE_SETREGS */ diff --git a/arch/ia64/include/asm/syscall.h b/arch/ia64/include/asm/syscall.h new file mode 100644 index 000000000000..2f758a42f94b --- /dev/null +++ b/arch/ia64/include/asm/syscall.h @@ -0,0 +1,163 @@ +/* + * Access to user system call parameters and results + * + * Copyright (C) 2008 Intel Corp. Shaohua Li <shaohua.li@intel.com> + * + * This copyrighted material is made available to anyone wishing to use, + * modify, copy, or redistribute it subject to the terms and conditions + * of the GNU General Public License v.2. + * + * See asm-generic/syscall.h for descriptions of what we must do here. + */ + +#ifndef _ASM_SYSCALL_H +#define _ASM_SYSCALL_H 1 + +#include <linux/sched.h> +#include <linux/err.h> + +static inline long syscall_get_nr(struct task_struct *task, + struct pt_regs *regs) +{ + if ((long)regs->cr_ifs < 0) /* Not a syscall */ + return -1; + +#ifdef CONFIG_IA32_SUPPORT + if (IS_IA32_PROCESS(regs)) + return regs->r1; +#endif + + return regs->r15; +} + +static inline void syscall_rollback(struct task_struct *task, + struct pt_regs *regs) +{ +#ifdef CONFIG_IA32_SUPPORT + if (IS_IA32_PROCESS(regs)) + regs->r8 = regs->r1; +#endif + + /* do nothing */ +} + +static inline long syscall_get_error(struct task_struct *task, + struct pt_regs *regs) +{ +#ifdef CONFIG_IA32_SUPPORT + if (IS_IA32_PROCESS(regs)) + return regs->r8; +#endif + + return regs->r10 == -1 ? regs->r8:0; +} + +static inline long syscall_get_return_value(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->r8; +} + +static inline void syscall_set_return_value(struct task_struct *task, + struct pt_regs *regs, + int error, long val) +{ +#ifdef CONFIG_IA32_SUPPORT + if (IS_IA32_PROCESS(regs)) { + regs->r8 = (long) error ? error : val; + return; + } +#endif + + if (error) { + /* error < 0, but ia64 uses > 0 return value */ + regs->r8 = -error; + regs->r10 = -1; + } else { + regs->r8 = val; + regs->r10 = 0; + } +} + +extern void ia64_syscall_get_set_arguments(struct task_struct *task, + struct pt_regs *regs, unsigned int i, unsigned int n, + unsigned long *args, int rw); +static inline void syscall_get_arguments(struct task_struct *task, + struct pt_regs *regs, + unsigned int i, unsigned int n, + unsigned long *args) +{ + BUG_ON(i + n > 6); + +#ifdef CONFIG_IA32_SUPPORT + if (IS_IA32_PROCESS(regs)) { + switch (i + n) { + case 6: + if (!n--) break; + *args++ = regs->r13; + case 5: + if (!n--) break; + *args++ = regs->r15; + case 4: + if (!n--) break; + *args++ = regs->r14; + case 3: + if (!n--) break; + *args++ = regs->r10; + case 2: + if (!n--) break; + *args++ = regs->r9; + case 1: + if (!n--) break; + *args++ = regs->r11; + case 0: + if (!n--) break; + default: + BUG(); + break; + } + + return; + } +#endif + ia64_syscall_get_set_arguments(task, regs, i, n, args, 0); +} + +static inline void syscall_set_arguments(struct task_struct *task, + struct pt_regs *regs, + unsigned int i, unsigned int n, + unsigned long *args) +{ + BUG_ON(i + n > 6); + +#ifdef CONFIG_IA32_SUPPORT + if (IS_IA32_PROCESS(regs)) { + switch (i + n) { + case 6: + if (!n--) break; + regs->r13 = *args++; + case 5: + if (!n--) break; + regs->r15 = *args++; + case 4: + if (!n--) break; + regs->r14 = *args++; + case 3: + if (!n--) break; + regs->r10 = *args++; + case 2: + if (!n--) break; + regs->r9 = *args++; + case 1: + if (!n--) break; + regs->r11 = *args++; + case 0: + if (!n--) break; + } + + return; + } +#endif + ia64_syscall_get_set_arguments(task, regs, i, n, args, 1); +} +#endif /* _ASM_SYSCALL_H */ diff --git a/arch/ia64/include/asm/thread_info.h b/arch/ia64/include/asm/thread_info.h index 7c60fcdd2efd..ae6922626bf4 100644 --- a/arch/ia64/include/asm/thread_info.h +++ b/arch/ia64/include/asm/thread_info.h @@ -87,9 +87,6 @@ struct thread_info { #define alloc_task_struct() ((struct task_struct *)__get_free_pages(GFP_KERNEL | __GFP_COMP, KERNEL_STACK_SIZE_ORDER)) #define free_task_struct(tsk) free_pages((unsigned long) (tsk), KERNEL_STACK_SIZE_ORDER) -#define tsk_set_notify_resume(tsk) \ - set_ti_thread_flag(task_thread_info(tsk), TIF_NOTIFY_RESUME) -extern void tsk_clear_notify_resume(struct task_struct *tsk); #endif /* !__ASSEMBLY */ /* diff --git a/arch/ia64/include/asm/unistd.h b/arch/ia64/include/asm/unistd.h index d535833aab5e..f791576355ad 100644 --- a/arch/ia64/include/asm/unistd.h +++ b/arch/ia64/include/asm/unistd.h @@ -337,6 +337,7 @@ # define __ARCH_WANT_SYS_NICE # define __ARCH_WANT_SYS_OLD_GETRLIMIT # define __ARCH_WANT_SYS_OLDUMOUNT +# define __ARCH_WANT_SYS_PAUSE # define __ARCH_WANT_SYS_SIGPENDING # define __ARCH_WANT_SYS_SIGPROCMASK # define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S index 0dd6c1419d8d..7ef0c594f5ed 100644 --- a/arch/ia64/kernel/entry.S +++ b/arch/ia64/kernel/entry.S @@ -534,6 +534,11 @@ GLOBAL_ENTRY(ia64_trace_syscall) stf.spill [r16]=f10 stf.spill [r17]=f11 br.call.sptk.many rp=syscall_trace_enter // give parent a chance to catch syscall args + cmp.lt p6,p0=r8,r0 // check tracehook + adds r2=PT(R8)+16,sp // r2 = &pt_regs.r8 + adds r3=PT(R10)+16,sp // r3 = &pt_regs.r10 + mov r10=0 +(p6) br.cond.sptk strace_error // syscall failed -> adds r16=PT(F6)+16,sp adds r17=PT(F7)+16,sp ;; diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index fc8f3509df27..ada4605d1223 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -40,6 +40,7 @@ #include <linux/capability.h> #include <linux/rcupdate.h> #include <linux/completion.h> +#include <linux/tracehook.h> #include <asm/errno.h> #include <asm/intrinsics.h> @@ -3684,7 +3685,7 @@ pfm_restart(pfm_context_t *ctx, void *arg, int count, struct pt_regs *regs) PFM_SET_WORK_PENDING(task, 1); - tsk_set_notify_resume(task); + set_notify_resume(task); /* * XXX: send reschedule if task runs on another CPU @@ -5044,8 +5045,6 @@ pfm_handle_work(void) PFM_SET_WORK_PENDING(current, 0); - tsk_clear_notify_resume(current); - regs = task_pt_regs(current); /* @@ -5414,7 +5413,7 @@ pfm_overflow_handler(struct task_struct *task, pfm_context_t *ctx, u64 pmc0, str * when coming from ctxsw, current still points to the * previous task, therefore we must work with task and not current. */ - tsk_set_notify_resume(task); + set_notify_resume(task); } /* * defer until state is changed (shorten spin window). the context is locked diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c index 8de0f460c88d..c57162705147 100644 --- a/arch/ia64/kernel/process.c +++ b/arch/ia64/kernel/process.c @@ -28,6 +28,7 @@ #include <linux/delay.h> #include <linux/kdebug.h> #include <linux/utsname.h> +#include <linux/tracehook.h> #include <asm/cpu.h> #include <asm/delay.h> @@ -160,21 +161,6 @@ show_regs (struct pt_regs *regs) show_stack(NULL, NULL); } -void tsk_clear_notify_resume(struct task_struct *tsk) -{ -#ifdef CONFIG_PERFMON - if (tsk->thread.pfm_needs_checking) - return; -#endif - if (test_ti_thread_flag(task_thread_info(tsk), TIF_RESTORE_RSE)) - return; - clear_ti_thread_flag(task_thread_info(tsk), TIF_NOTIFY_RESUME); -} - -/* - * do_notify_resume_user(): - * Called from notify_resume_user at entry.S, with interrupts disabled. - */ void do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall) { @@ -203,6 +189,11 @@ do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall) ia64_do_signal(scr, in_syscall); } + if (test_thread_flag(TIF_NOTIFY_RESUME)) { + clear_thread_flag(TIF_NOTIFY_RESUME); + tracehook_notify_resume(&scr->pt); + } + /* copy user rbs to kernel rbs */ if (unlikely(test_thread_flag(TIF_RESTORE_RSE))) { local_irq_enable(); /* force interrupt enable */ diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c index 2a9943b5947f..92c9689b7d97 100644 --- a/arch/ia64/kernel/ptrace.c +++ b/arch/ia64/kernel/ptrace.c @@ -22,6 +22,7 @@ #include <linux/signal.h> #include <linux/regset.h> #include <linux/elf.h> +#include <linux/tracehook.h> #include <asm/pgtable.h> #include <asm/processor.h> @@ -603,7 +604,7 @@ void ia64_ptrace_stop(void) { if (test_and_set_tsk_thread_flag(current, TIF_RESTORE_RSE)) return; - tsk_set_notify_resume(current); + set_notify_resume(current); unw_init_running(do_sync_rbs, ia64_sync_user_rbs); } @@ -613,7 +614,6 @@ void ia64_ptrace_stop(void) void ia64_sync_krbs(void) { clear_tsk_thread_flag(current, TIF_RESTORE_RSE); - tsk_clear_notify_resume(current); unw_init_running(do_sync_rbs, ia64_sync_kernel_rbs); } @@ -644,7 +644,7 @@ ptrace_attach_sync_user_rbs (struct task_struct *child) spin_lock_irq(&child->sighand->siglock); if (child->state == TASK_STOPPED && !test_and_set_tsk_thread_flag(child, TIF_RESTORE_RSE)) { - tsk_set_notify_resume(child); + set_notify_resume(child); child->state = TASK_TRACED; stopped = 1; @@ -1232,37 +1232,16 @@ arch_ptrace (struct task_struct *child, long request, long addr, long data) } -static void -syscall_trace (void) -{ - /* - * The 0x80 provides a way for the tracing parent to - * distinguish between a syscall stop and SIGTRAP delivery. - */ - ptrace_notify(SIGTRAP - | ((current->ptrace & PT_TRACESYSGOOD) ? 0x80 : 0)); - - /* - * This isn't the same as continuing with a signal, but it - * will do for normal use. strace only continues with a - * signal if the stopping signal is not SIGTRAP. -brl - */ - if (current->exit_code) { - send_sig(current->exit_code, current, 1); - current->exit_code = 0; - } -} - /* "asmlinkage" so the input arguments are preserved... */ -asmlinkage void +asmlinkage long syscall_trace_enter (long arg0, long arg1, long arg2, long arg3, long arg4, long arg5, long arg6, long arg7, struct pt_regs regs) { - if (test_thread_flag(TIF_SYSCALL_TRACE) - && (current->ptrace & PT_PTRACED)) - syscall_trace(); + if (test_thread_flag(TIF_SYSCALL_TRACE)) + if (tracehook_report_syscall_entry(®s)) + return -ENOSYS; /* copy user rbs to kernel rbs */ if (test_thread_flag(TIF_RESTORE_RSE)) @@ -1283,6 +1262,7 @@ syscall_trace_enter (long arg0, long arg1, long arg2, long arg3, audit_syscall_entry(arch, syscall, arg0, arg1, arg2, arg3); } + return 0; } /* "asmlinkage" so the input arguments are preserved... */ @@ -1292,6 +1272,8 @@ syscall_trace_leave (long arg0, long arg1, long arg2, long arg3, long arg4, long arg5, long arg6, long arg7, struct pt_regs regs) { + int step; + if (unlikely(current->audit_context)) { int success = AUDITSC_RESULT(regs.r10); long result = regs.r8; @@ -1301,10 +1283,9 @@ syscall_trace_leave (long arg0, long arg1, long arg2, long arg3, audit_syscall_exit(success, result); } - if ((test_thread_flag(TIF_SYSCALL_TRACE) - || test_thread_flag(TIF_SINGLESTEP)) - && (current->ptrace & PT_PTRACED)) - syscall_trace(); + step = test_thread_flag(TIF_SINGLESTEP); + if (step || test_thread_flag(TIF_SYSCALL_TRACE)) + tracehook_report_syscall_exit(®s, step); /* copy user rbs to kernel rbs */ if (test_thread_flag(TIF_RESTORE_RSE)) @@ -1940,7 +1921,7 @@ gpregs_writeback(struct task_struct *target, { if (test_and_set_tsk_thread_flag(target, TIF_RESTORE_RSE)) return 0; - tsk_set_notify_resume(target); + set_notify_resume(target); return do_regset_call(do_gpregs_writeback, target, regset, 0, 0, NULL, NULL); } @@ -2199,3 +2180,68 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *tsk) #endif return &user_ia64_view; } + +struct syscall_get_set_args { + unsigned int i; + unsigned int n; + unsigned long *args; + struct pt_regs *regs; + int rw; +}; + +static void syscall_get_set_args_cb(struct unw_frame_info *info, void *data) +{ + struct syscall_get_set_args *args = data; + struct pt_regs *pt = args->regs; + unsigned long *krbs, cfm, ndirty; + int i, count; + + if (unw_unwind_to_user(info) < 0) + return; + + cfm = pt->cr_ifs; + krbs = (unsigned long *)info->task + IA64_RBS_OFFSET/8; + ndirty = ia64_rse_num_regs(krbs, krbs + (pt->loadrs >> 19)); + + count = 0; + if (in_syscall(pt)) + count = min_t(int, args->n, cfm & 0x7f); + + for (i = 0; i < count; i++) { + if (args->rw) + *ia64_rse_skip_regs(krbs, ndirty + i + args->i) = + args->args[i]; + else + args->args[i] = *ia64_rse_skip_regs(krbs, + ndirty + i + args->i); + } + + if (!args->rw) { + while (i < args->n) { + args->args[i] = 0; + i++; + } + } +} + +void ia64_syscall_get_set_arguments(struct task_struct *task, + struct pt_regs *regs, unsigned int i, unsigned int n, + unsigned long *args, int rw) +{ + struct syscall_get_set_args data = { + .i = i, + .n = n, + .args = args, + .regs = regs, + .rw = rw, + }; + + if (task == current) + unw_init_running(syscall_get_set_args_cb, &data); + else { + struct unw_frame_info ufi; + memset(&ufi, 0, sizeof(ufi)); + unw_init_from_blocked_task(&ufi, task); + syscall_get_set_args_cb(&ufi, &data); + } +} diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c index 19c5a78636fc..e12500a9c443 100644 --- a/arch/ia64/kernel/signal.c +++ b/arch/ia64/kernel/signal.c @@ -11,6 +11,7 @@ #include <linux/kernel.h> #include <linux/mm.h> #include <linux/ptrace.h> +#include <linux/tracehook.h> #include <linux/sched.h> #include <linux/signal.h> #include <linux/smp.h> @@ -439,6 +440,13 @@ handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, sigse sigaddset(¤t->blocked, sig); recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); + + /* + * Let tracing know that we've done the handler setup. + */ + tracehook_signal_handler(sig, info, ka, &scr->pt, + test_thread_flag(TIF_SINGLESTEP)); + return 1; } diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c index 8caf42471f0d..bd9818a36b47 100644 --- a/arch/ia64/mm/tlb.c +++ b/arch/ia64/mm/tlb.c @@ -362,9 +362,13 @@ ia64_tlb_init (void) per_cpu(ia64_tr_num, cpu) = vm_info_1.pal_vm_info_1_s.max_dtr_entry+1; if (per_cpu(ia64_tr_num, cpu) > IA64_TR_ALLOC_MAX) { + static int justonce = 1; per_cpu(ia64_tr_num, cpu) = IA64_TR_ALLOC_MAX; - printk(KERN_DEBUG "TR register number exceeds IA64_TR_ALLOC_MAX!" - "IA64_TR_ALLOC_MAX should be extended\n"); + if (justonce) { + justonce = 0; + printk(KERN_DEBUG "TR register number exceeds " + "IA64_TR_ALLOC_MAX!\n"); + } } } |
