diff options
Diffstat (limited to 'arch/mn10300')
-rw-r--r-- | arch/mn10300/Kconfig | 1 | ||||
-rw-r--r-- | arch/mn10300/include/asm/atomic.h | 2 | ||||
-rw-r--r-- | arch/mn10300/include/asm/bitsperlong.h | 1 | ||||
-rw-r--r-- | arch/mn10300/include/asm/elf.h | 5 | ||||
-rw-r--r-- | arch/mn10300/include/asm/kmap_types.h | 27 | ||||
-rw-r--r-- | arch/mn10300/include/asm/mman.h | 2 | ||||
-rw-r--r-- | arch/mn10300/include/asm/pci.h | 13 | ||||
-rw-r--r-- | arch/mn10300/include/asm/processor.h | 8 | ||||
-rw-r--r-- | arch/mn10300/include/asm/ptrace.h | 13 | ||||
-rw-r--r-- | arch/mn10300/include/asm/setup.h | 3 | ||||
-rw-r--r-- | arch/mn10300/include/asm/signal.h | 2 | ||||
-rw-r--r-- | arch/mn10300/kernel/entry.S | 13 | ||||
-rw-r--r-- | arch/mn10300/kernel/init_task.c | 3 | ||||
-rw-r--r-- | arch/mn10300/kernel/module.c | 41 | ||||
-rw-r--r-- | arch/mn10300/kernel/process.c | 3 | ||||
-rw-r--r-- | arch/mn10300/kernel/ptrace.c | 454 | ||||
-rw-r--r-- | arch/mn10300/kernel/signal.c | 9 | ||||
-rw-r--r-- | arch/mn10300/kernel/vmlinux.lds.S | 60 | ||||
-rw-r--r-- | arch/mn10300/mm/fault.c | 2 | ||||
-rw-r--r-- | arch/mn10300/mm/tlb-mn10300.S | 18 |
20 files changed, 321 insertions, 359 deletions
diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig index 355926730e8..89faacad5d1 100644 --- a/arch/mn10300/Kconfig +++ b/arch/mn10300/Kconfig @@ -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 diff --git a/arch/mn10300/include/asm/atomic.h b/arch/mn10300/include/asm/atomic.h index bc064825f9b..5bf5be9566d 100644 --- a/arch/mn10300/include/asm/atomic.h +++ b/arch/mn10300/include/asm/atomic.h @@ -151,7 +151,7 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) #define smp_mb__before_atomic_inc() barrier() #define smp_mb__after_atomic_inc() barrier() -#include <asm-generic/atomic.h> +#include <asm-generic/atomic-long.h> #endif /* __KERNEL__ */ #endif /* _ASM_ATOMIC_H */ diff --git a/arch/mn10300/include/asm/bitsperlong.h b/arch/mn10300/include/asm/bitsperlong.h new file mode 100644 index 00000000000..6dc0bb0c13b --- /dev/null +++ b/arch/mn10300/include/asm/bitsperlong.h @@ -0,0 +1 @@ +#include <asm-generic/bitsperlong.h> diff --git a/arch/mn10300/include/asm/elf.h b/arch/mn10300/include/asm/elf.h index bf09f8bb392..75a70aa9fd6 100644 --- a/arch/mn10300/include/asm/elf.h +++ b/arch/mn10300/include/asm/elf.h @@ -28,13 +28,15 @@ #define R_MN10300_PCREL8 6 /* PC-relative 8-bit signed. */ #define R_MN10300_24 9 /* Direct 24 bit. */ #define R_MN10300_RELATIVE 23 /* Adjust by program base. */ +#define R_MN10300_SYM_DIFF 33 /* Adjustment when relaxing. */ +#define R_MN10300_ALIGN 34 /* Alignment requirement. */ /* * ELF register definitions.. */ 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 +78,7 @@ do { \ } while (0) #define USE_ELF_CORE_DUMP +#define CORE_DUMP_USE_REGSET #define ELF_EXEC_PAGESIZE 4096 /* diff --git a/arch/mn10300/include/asm/kmap_types.h b/arch/mn10300/include/asm/kmap_types.h index 3398f9f3560..76d093b58d4 100644 --- a/arch/mn10300/include/asm/kmap_types.h +++ b/arch/mn10300/include/asm/kmap_types.h @@ -1,31 +1,6 @@ -/* MN10300 kmap_atomic() slot IDs - * - * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ #ifndef _ASM_KMAP_TYPES_H #define _ASM_KMAP_TYPES_H -enum km_type { - KM_BOUNCE_READ, - KM_SKB_SUNRPC_DATA, - KM_SKB_DATA_SOFTIRQ, - KM_USER0, - KM_USER1, - KM_BIO_SRC_IRQ, - KM_BIO_DST_IRQ, - KM_PTE0, - KM_PTE1, - KM_IRQ0, - KM_IRQ1, - KM_SOFTIRQ0, - KM_SOFTIRQ1, - KM_TYPE_NR -}; +#include <asm-generic/kmap_types.h> #endif /* _ASM_KMAP_TYPES_H */ diff --git a/arch/mn10300/include/asm/mman.h b/arch/mn10300/include/asm/mman.h index b7986b65add..d04fac1da5a 100644 --- a/arch/mn10300/include/asm/mman.h +++ b/arch/mn10300/include/asm/mman.h @@ -12,7 +12,7 @@ #ifndef _ASM_MMAN_H #define _ASM_MMAN_H -#include <asm-generic/mman.h> +#include <asm-generic/mman-common.h> #define MAP_GROWSDOWN 0x0100 /* stack-like segment */ #define MAP_DENYWRITE 0x0800 /* ETXTBSY */ diff --git a/arch/mn10300/include/asm/pci.h b/arch/mn10300/include/asm/pci.h index 0517b45313d..e58b9a46e1b 100644 --- a/arch/mn10300/include/asm/pci.h +++ b/arch/mn10300/include/asm/pci.h @@ -106,19 +106,6 @@ extern void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, struct pci_bus_region *region); -static inline struct resource * -pcibios_select_root(struct pci_dev *pdev, struct resource *res) -{ - struct resource *root = NULL; - - if (res->flags & IORESOURCE_IO) - root = &ioport_resource; - if (res->flags & IORESOURCE_MEM) - root = &iomem_resource; - - return root; -} - #define pcibios_scan_all_fns(a, b) 0 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) diff --git a/arch/mn10300/include/asm/processor.h b/arch/mn10300/include/asm/processor.h index 73239271873..f7d4b0d285e 100644 --- a/arch/mn10300/include/asm/processor.h +++ b/arch/mn10300/include/asm/processor.h @@ -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) diff --git a/arch/mn10300/include/asm/ptrace.h b/arch/mn10300/include/asm/ptrace.h index 7b06cc623d8..1b0ba5e182b 100644 --- a/arch/mn10300/include/asm/ptrace.h +++ b/arch/mn10300/include/asm/ptrace.h @@ -77,8 +77,6 @@ struct pt_regs { }; #endif -extern struct pt_regs *__frame; /* current frame pointer */ - /* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */ #define PTRACE_GETREGS 12 #define PTRACE_SETREGS 13 @@ -90,14 +88,23 @@ extern struct pt_regs *__frame; /* current frame pointer */ #if defined(__KERNEL__) +extern struct pt_regs *__frame; /* current frame pointer */ + #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) #endif /* __KERNEL__ */ - #endif /* _ASM_PTRACE_H */ diff --git a/arch/mn10300/include/asm/setup.h b/arch/mn10300/include/asm/setup.h index 08356c83228..c229d1e3f99 100644 --- a/arch/mn10300/include/asm/setup.h +++ b/arch/mn10300/include/asm/setup.h @@ -11,7 +11,8 @@ #ifndef _ASM_SETUP_H #define _ASM_SETUP_H +#ifdef __KERNEL__ extern void __init unit_setup(void); extern void __init unit_init_IRQ(void); - +#endif #endif /* _ASM_SETUP_H */ diff --git a/arch/mn10300/include/asm/signal.h b/arch/mn10300/include/asm/signal.h index e98817cec5f..7e891fce237 100644 --- a/arch/mn10300/include/asm/signal.h +++ b/arch/mn10300/include/asm/signal.h @@ -115,7 +115,7 @@ typedef unsigned long sigset_t; #define MINSIGSTKSZ 2048 #define SIGSTKSZ 8192 -#include <asm-generic/signal.h> +#include <asm-generic/signal-defs.h> #ifdef __KERNEL__ struct old_sigaction { diff --git a/arch/mn10300/kernel/entry.S b/arch/mn10300/kernel/entry.S index 3dc3e462f92..7408a27199f 100644 --- a/arch/mn10300/kernel/entry.S +++ b/arch/mn10300/kernel/entry.S @@ -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 diff --git a/arch/mn10300/kernel/init_task.c b/arch/mn10300/kernel/init_task.c index 5ac3566f8c9..80d423b80af 100644 --- a/arch/mn10300/kernel/init_task.c +++ b/arch/mn10300/kernel/init_task.c @@ -20,9 +20,6 @@ static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); -struct mm_struct init_mm = INIT_MM(init_mm); -EXPORT_SYMBOL(init_mm); - /* * Initial thread structure. * diff --git a/arch/mn10300/kernel/module.c b/arch/mn10300/kernel/module.c index 6b287f2e8e8..6aea7fd7699 100644 --- a/arch/mn10300/kernel/module.c +++ b/arch/mn10300/kernel/module.c @@ -1,6 +1,6 @@ /* MN10300 Kernel module helper routines * - * Copyright (C) 2007, 2008 Red Hat, Inc. All Rights Reserved. + * Copyright (C) 2007, 2008, 2009 Red Hat, Inc. All Rights Reserved. * Written by Mark Salter (msalter@redhat.com) * - Derived from arch/i386/kernel/module.c * @@ -48,8 +48,6 @@ void *module_alloc(unsigned long size) void module_free(struct module *mod, void *module_region) { vfree(module_region); - /* FIXME: If module_region == mod->init_region, trim exception - * table entries. */ } /* @@ -105,10 +103,10 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, unsigned int relsec, struct module *me) { - unsigned int i; + unsigned int i, sym_diff_seen = 0; Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr; Elf32_Sym *sym; - Elf32_Addr relocation; + Elf32_Addr relocation, sym_diff_val = 0; uint8_t *location; uint32_t value; @@ -128,6 +126,22 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, /* this is the adjustment to be made */ relocation = sym->st_value + rel[i].r_addend; + if (sym_diff_seen) { + switch (ELF32_R_TYPE(rel[i].r_info)) { + case R_MN10300_32: + case R_MN10300_24: + case R_MN10300_16: + case R_MN10300_8: + relocation -= sym_diff_val; + sym_diff_seen = 0; + break; + default: + printk(KERN_ERR "module %s: Unexpected SYM_DIFF relocation: %u\n", + me->name, ELF32_R_TYPE(rel[i].r_info)); + return -ENOEXEC; + } + } + switch (ELF32_R_TYPE(rel[i].r_info)) { /* for the first four relocation types, we simply * store the adjustment at the location given */ @@ -159,12 +173,29 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, *location = relocation - (uint32_t) location; break; + case R_MN10300_SYM_DIFF: + /* This is used to adjust the next reloc as required + * by relaxation. */ + sym_diff_seen = 1; + sym_diff_val = sym->st_value; + break; + + case R_MN10300_ALIGN: + /* Just ignore the ALIGN relocs. + * Only interesting if kernel performed relaxation. */ + continue; + default: printk(KERN_ERR "module %s: Unknown relocation: %u\n", me->name, ELF32_R_TYPE(rel[i].r_info)); return -ENOEXEC; } } + if (sym_diff_seen) { + printk(KERN_ERR "module %s: Nothing follows SYM_DIFF relocation: %u\n", + me->name, ELF32_R_TYPE(rel[i].r_info)); + return -ENOEXEC; + } return 0; } diff --git a/arch/mn10300/kernel/process.c b/arch/mn10300/kernel/process.c index 234cf344cdc..892cce82867 100644 --- a/arch/mn10300/kernel/process.c +++ b/arch/mn10300/kernel/process.c @@ -281,9 +281,6 @@ asmlinkage long sys_execve(char __user *name, error = PTR_ERR(filename); if (!IS_ERR(filename)) { error = do_execve(filename, argv, envp, __frame); - if (error == 0) - current->ptrace &= ~PT_DTRACE; - putname(filename); } diff --git a/arch/mn10300/kernel/ptrace.c b/arch/mn10300/kernel/ptrace.c index d6d6cdc75c5..e143339ad28 100644 --- a/arch/mn10300/kernel/ptrace.c +++ b/arch/mn10300/kernel/ptrace.c @@ -17,6 +17,9 @@ #include <linux/errno.h> #include <linux/ptrace.h> #include <linux/user.h> +#include <linux/regset.h> +#include <linux/elf.h> +#include <linux/tracehook.h> #include <asm/uaccess.h> #include <asm/pgtable.h> #include <asm/system.h> @@ -64,12 +67,6 @@ static inline int get_stack_long(struct task_struct *task, int offset) ((unsigned long) task->thread.uregs + offset); } -/* - * this routine will put a word on the processes privileged stack. - * the offset is how far from the base addr as stored in the TSS. - * this routine assumes that all the privileged stacks are in our - * data space. - */ static inline int put_stack_long(struct task_struct *task, int offset, unsigned long data) { @@ -80,94 +77,233 @@ int put_stack_long(struct task_struct *task, int offset, unsigned long data) return 0; } -static inline unsigned long get_fpregs(struct fpu_state_struct *buf, - struct task_struct *tsk) +/* + * retrieve the contents of MN10300 userspace general registers + */ +static int genregs_get(struct task_struct *target, + const struct user_regset *regset, + unsigned int pos, unsigned int count, + void *kbuf, void __user *ubuf) { - return __copy_to_user(buf, &tsk->thread.fpu_state, - sizeof(struct fpu_state_struct)); + const struct pt_regs *regs = task_pt_regs(target); + int ret; + + /* we need to skip regs->next */ + ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, + regs, 0, PT_ORIG_D0 * sizeof(long)); + if (ret < 0) + return ret; + + ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, + ®s->orig_d0, PT_ORIG_D0 * sizeof(long), + NR_PTREGS * sizeof(long)); + if (ret < 0) + return ret; + + return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, + NR_PTREGS * sizeof(long), -1); } -static inline unsigned long set_fpregs(struct task_struct *tsk, - struct fpu_state_struct *buf) +/* + * update the contents of the MN10300 userspace general registers + */ +static int genregs_set(struct task_struct *target, + const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf) { - return __copy_from_user(&tsk->thread.fpu_state, buf, - sizeof(struct fpu_state_struct)); + struct pt_regs *regs = task_pt_regs(target); + unsigned long tmp; + int ret; + + /* we need to skip regs->next */ + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, + regs, 0, PT_ORIG_D0 * sizeof(long)); + if (ret < 0) + return ret; + + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, + ®s->orig_d0, PT_ORIG_D0 * sizeof(long), + PT_EPSW * sizeof(long)); + if (ret < 0) + return ret; + + /* we need to mask off changes to EPSW */ + tmp = regs->epsw; + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, + &tmp, PT_EPSW * sizeof(long), + PT_PC * sizeof(long)); + tmp &= EPSW_FLAG_V | EPSW_FLAG_C | EPSW_FLAG_N | EPSW_FLAG_Z; + tmp |= regs->epsw & ~(EPSW_FLAG_V | EPSW_FLAG_C | EPSW_FLAG_N | + EPSW_FLAG_Z); + regs->epsw = tmp; + + if (ret < 0) + return ret; + + /* and finally load the PC */ + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, + ®s->pc, PT_PC * sizeof(long), + NR_PTREGS * sizeof(long)); + + if (ret < 0) + return ret; + + return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, + NR_PTREGS * sizeof(long), -1); } -static inline void fpsave_init(struct task_struct *task) +/* + * retrieve the contents of MN10300 userspace FPU registers + */ +static int fpuregs_get(struct task_struct *target, + const struct user_regset *regset, + unsigned int pos, unsigned int count, + void *kbuf, void __user *ubuf) { - memset(&task->thread.fpu_state, 0, sizeof(struct fpu_state_struct)); + const struct fpu_state_struct *fpregs = &target->thread.fpu_state; + int ret; + + unlazy_fpu(target); + + ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, + fpregs, 0, sizeof(*fpregs)); + if (ret < 0) + return ret; + + return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, + sizeof(*fpregs), -1); } /* - * make sure the single step bit is not set + * update the contents of the MN10300 userspace FPU registers */ -void ptrace_disable(struct task_struct *child) +static int fpuregs_set(struct task_struct *target, + const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf) +{ + struct fpu_state_struct fpu_state = target->thread.fpu_state; + int ret; + + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, + &fpu_state, 0, sizeof(fpu_state)); + if (ret < 0) + return ret; + + fpu_kill_state(target); + target->thread.fpu_state = fpu_state; + set_using_fpu(target); + + return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, + sizeof(fpu_state), -1); +} + +/* + * determine if the FPU registers have actually been used + */ +static int fpuregs_active(struct task_struct *target, + const struct user_regset *regset) +{ + return is_using_fpu(target) ? regset->n : 0; +} + +/* + * Define the register sets available on the MN10300 under Linux + */ +enum mn10300_regset { + REGSET_GENERAL, + REGSET_FPU, +}; + +static const struct user_regset mn10300_regsets[] = { + /* + * General register format is: + * A3, A2, D3, D2, MCVF, MCRL, MCRH, MDRQ + * E1, E0, E7...E2, SP, LAR, LIR, MDR + * A1, A0, D1, D0, ORIG_D0, EPSW, PC + */ + [REGSET_GENERAL] = { + .core_note_type = NT_PRSTATUS, + .n = ELF_NGREG, + .size = sizeof(long), + .align = sizeof(long), + .get = genregs_get, + .set = genregs_set, + }, + /* + * FPU register format is: + * FS0-31, FPCR + */ + [REGSET_FPU] = { + .core_note_type = NT_PRFPREG, + .n = sizeof(struct fpu_state_struct) / sizeof(long), + .size = sizeof(long), + .align = sizeof(long), + .get = fpuregs_get, + .set = fpuregs_set, + .active = fpuregs_active, + }, +}; + +static const struct user_regset_view user_mn10300_native_view = { + .name = "mn10300", + .e_machine = EM_MN10300, + .regsets = mn10300_regsets, + .n = ARRAY_SIZE(mn10300_regsets), +}; + +const struct user_regset_view *task_user_regset_view(struct task_struct *task) +{ + return &user_mn10300_native_view; +} + +/* + * set the single-step bit + */ +void user_enable_single_step(struct task_struct *child) { #ifndef CONFIG_MN10300_USING_JTAG struct user *dummy = NULL; long tmp; tmp = get_stack_long(child, (unsigned long) &dummy->regs.epsw); - tmp &= ~EPSW_T; + tmp |= EPSW_T; put_stack_long(child, (unsigned long) &dummy->regs.epsw, tmp); #endif } /* - * set the single step bit + * make sure the single-step bit is not set */ -void ptrace_enable(struct task_struct *child) +void user_disable_single_step(struct task_struct *child) { #ifndef CONFIG_MN10300_USING_JTAG struct user *dummy = NULL; long tmp; tmp = get_stack_long(child, (unsigned long) &dummy->regs.epsw); - tmp |= EPSW_T; + tmp &= ~EPSW_T; put_stack_long(child, (unsigned long) &dummy->regs.epsw, tmp); #endif } +void ptrace_disable(struct task_struct *child) +{ + user_disable_single_step(child); +} + /* * handle the arch-specific side of process tracing */ long arch_ptrace(struct task_struct *child, long request, long addr, long data) { - struct fpu_state_struct fpu_state; - int i, ret; + unsigned long tmp; + int ret; switch (request) { - /* read the word at location addr. */ - case PTRACE_PEEKTEXT: { - unsigned long tmp; - int copied; - - copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0); - ret = -EIO; - if (copied != sizeof(tmp)) - break; - ret = put_user(tmp, (unsigned long *) data); - break; - } - - /* read the word at location addr. */ - case PTRACE_PEEKDATA: { - unsigned long tmp; - int copied; - - copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0); - ret = -EIO; - if (copied != sizeof(tmp)) - break; - ret = put_user(tmp, (unsigned long *) data); - break; - } - /* read the word at location addr in the USER area. */ - case PTRACE_PEEKUSR: { - unsigned long tmp; - + case PTRACE_PEEKUSR: ret = -EIO; if ((addr & 3) || addr < 0 || addr > sizeof(struct user) - 3) @@ -179,17 +315,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) ptrace_regid_to_frame[addr]); ret = put_user(tmp, (unsigned long *) data); break; - } - - /* write the word at location addr. */ - case PTRACE_POKETEXT: - case PTRACE_POKEDATA: - if (access_process_vm(child, addr, &data, sizeof(data), 1) == - sizeof(data)) - ret = 0; - else - ret = -EIO; - break; /* write the word at location addr in the USER area */ case PTRACE_POKEUSR: @@ -204,132 +329,32 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) data); break; - /* continue and stop at next (return from) syscall */ - case PTRACE_SYSCALL: - /* restart after signal. */ - case PTRACE_CONT: - ret = -EIO; - if ((unsigned long) data > _NSIG) - break; - if (request == PTRACE_SYSCALL) - set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - else - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - child->exit_code = data; - ptrace_disable(child); - wake_up_process(child); - ret = 0; - break; - - /* - * make the child exit - * - the best I can do is send it a sigkill - * - perhaps it should be put in the status that it wants to - * exit - */ - case PTRACE_KILL: - ret = 0; - if (child->exit_state == EXIT_ZOMBIE) /* already dead */ - break; - child->exit_code = SIGKILL; - clear_tsk_thread_flag(child, TIF_SINGLESTEP); - ptrace_disable(child); - wake_up_process(child); - break; - - case PTRACE_SINGLESTEP: /* set the trap flag. */ -#ifndef CONFIG_MN10300_USING_JTAG - ret = -EIO; - if ((unsigned long) data > _NSIG) - break; - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - ptrace_enable(child); - child->exit_code = data; - wake_up_process(child); - ret = 0; -#else - ret = -EINVAL; -#endif - break; - - case PTRACE_DETACH: /* detach a process that was attached. */ - ret = ptrace_detach(child, data); - break; - - /* Get all gp regs from the child. */ - case PTRACE_GETREGS: { - unsigned long tmp; - - if (!access_ok(VERIFY_WRITE, (unsigned *) data, NR_PTREGS << 2)) { - ret = -EIO; - break; - } - - for (i = 0; i < NR_PTREGS << 2; i += 4) { - tmp = get_stack_long(child, ptrace_regid_to_frame[i]); - __put_user(tmp, (unsigned long *) data); - data += sizeof(tmp); - } - ret = 0; - break; - } - - case PTRACE_SETREGS: { /* Set all gp regs in the child. */ - unsigned long tmp; - - if (!access_ok(VERIFY_READ, (unsigned long *)data, - sizeof(struct pt_regs))) { - ret = -EIO; - break; - } - - for (i = 0; i < NR_PTREGS << 2; i += 4) { - __get_user(tmp, (unsigned long *) data); - put_stack_long(child, ptrace_regid_to_frame[i], tmp); - data += sizeof(tmp); - } - ret = 0; - break; - } - - case PTRACE_GETFPREGS: { /* Get the child FPU state. */ - if (is_using_fpu(child)) { - unlazy_fpu(child); - fpu_state = child->thread.fpu_state; - } else { - memset(&fpu_state, 0, sizeof(fpu_state)); - } - - ret = -EIO; - if (copy_to_user((void *) data, &fpu_state, - sizeof(fpu_state)) == 0) - ret = 0; - break; - } - - case PTRACE_SETFPREGS: { /* Set the child FPU state. */ - ret = -EFAULT; - if (copy_from_user(&fpu_state, (const void *) data, - sizeof(fpu_state)) == 0) { - fpu_kill_state(child); - child->thread.fpu_state = fpu_state; - set_using_fpu(child); - ret = 0; - } - break; - } - - case PTRACE_SETOPTIONS: { - if (data & PTRACE_O_TRACESYSGOOD) - child->ptrace |= PT_TRACESYSGOOD; - else - child->ptrace &= ~PT_TRACESYSGOOD; - ret = 0; - break; - } + case PTRACE_GETREGS: /* Get all integer regs from the child. */ + return copy_regset_to_user(child, &user_mn10300_native_view, + REGSET_GENERAL, + 0, NR_PTREGS * sizeof(long), + (void __user *)data); + + case PTRACE_SETREGS: /* Set all integer regs in the child. */ + return copy_regset_from_user(child, &user_mn10300_native_view, + REGSET_GENERAL, + 0, NR_PTREGS * sizeof(long), + (const void __user *)data); + + case PTRACE_GETFPREGS: /* Get the child FPU state. */ + return copy_regset_to_user(child, &user_mn10300_native_view, + REGSET_FPU, + 0, sizeof(struct fpu_state_struct), + (void __user *)data); + + case PTRACE_SETFPREGS: /* Set the child FPU state. */ + return copy_regset_from_user(child, &user_mn10300_native_view, + REGSET_FPU, + 0, sizeof(struct fpu_state_struct), + (const void __user *)data); default: - ret = -EIO; + ret = ptrace_request(child, request, addr, data); break; } @@ -337,43 +362,26 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) } /* - * notification of system call entry/exit - * - triggered by current->work.syscall_trace + * handle tracing of system call entry + * - return the revised system call number or ULONG_MAX to cause ENOSYS */ -asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit) +asmlinkage unsigned long syscall_trace_entry(struct pt_regs *regs) { -#if 0 - /* just in case... */ - printk(KERN_DEBUG "[%d] syscall_%lu(%lx,%lx,%lx,%lx) = %lx\n", - current->pid, - regs->orig_d0, - regs->a0, - regs->d1, - regs->a3, - regs->a2, - regs->d0); - return; -#endif - - if (!test_thread_flag(TIF_SYSCALL_TRACE) && - !test_thread_flag(TIF_SINGLESTEP)) - return; - if (!(current->ptrace & PT_PTRACED)) - return; + if (tracehook_report_syscall_entry(regs)) + /* tracing decided this syscall should not happen, so + * We'll return a bogus call number to get an ENOSYS + * error, but leave the original number in + * regs->orig_d0 + */ + return ULONG_MAX; - /* 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) && - !test_thread_flag(TIF_SINGLESTEP) ? 0x80 : 0)); + return regs->orig_d0; +} - /* - * 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; - } +/* + * handle tracing of system call exit + */ +asmlinkage void syscall_trace_exit(struct pt_regs *regs) +{ + tracehook_report_syscall_exit(regs, 0); } diff --git a/arch/mn10300/kernel/signal.c b/arch/mn10300/kernel/signal.c index 841ca9955a1..9f7572a0f57 100644 --- a/arch/mn10300/kernel/signal.c +++ b/arch/mn10300/kernel/signal.c @@ -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); + } } diff --git a/arch/mn10300/kernel/vmlinux.lds.S b/arch/mn10300/kernel/vmlinux.lds.S index 24de6b90f40..bcebcefb4ad 100644 --- a/arch/mn10300/kernel/vmlinux.lds.S +++ b/arch/mn10300/kernel/vmlinux.lds.S @@ -38,14 +38,10 @@ SECTIONS _etext = .; /* End of text section */ - . = ALIGN(16); /* Exception table */ - __start___ex_table = .; - __ex_table : { *(__ex_table) } - __stop___ex_table = .; - + EXCEPTION_TABLE(16) BUG_TABLE - RODATA + RO_DATA(PAGE_SIZE) /* writeable */ .data : { /* Data */ @@ -53,27 +49,19 @@ SECTIONS CONSTRUCTORS } - . = ALIGN(PAGE_SIZE); - __nosave_begin = .; - .data_nosave : { *(.data.nosave) } - . = ALIGN(PAGE_SIZE); - __nosave_end = .; - - . = ALIGN(PAGE_SIZE); - .data.page_aligned : { *(.data.idt) } + .data_nosave : { NOSAVE_DATA; } - . = ALIGN(32); - .data.cacheline_aligned : { *(.data.cacheline_aligned) } + .data.page_aligned : { PAGE_ALIGNED_DATA(PAGE_SIZE); } + .data.cacheline_aligned : { CACHELINE_ALIGNED_DATA(32); } /* rarely changed data like cpu maps */ . = ALIGN(32); .data.read_mostly : AT(ADDR(.data.read_mostly)) { - *(.data.read_mostly) + READ_MOSTLY_DATA(32); _edata = .; /* End of data section */ } - . = ALIGN(THREAD_SIZE); /* init_task */ - .data.init_task : { *(.data.init_task) } + .data.init_task : { INIT_TASK(THREAD_SIZE); } /* might get freed after init */ . = ALIGN(PAGE_SIZE); @@ -88,23 +76,18 @@ SECTIONS __init_begin = .; .init.text : { _sinittext = .; - *(.init.text) + INIT_TEXT; _einittext = .; } - .init.data : { *(.init.data) } - . = ALIGN(16); - __setup_start = .; - .setup.init : { KEEP(*(.init.setup)) } - __setup_end = .; + .init.data : { INIT_DATA; } + .setup.init : { INIT_SETUP(16); } __initcall_start = .; .initcall.init : { INITCALLS } __initcall_end = .; - __con_initcall_start = .; - .con_initcall.init : { *(.con_initcall.init) } - __con_initcall_end = .; + .con_initcall.init : { CON_INITCALL; } SECURITY_INIT . = ALIGN(4); @@ -114,28 +97,17 @@ SECTIONS .altinstr_replacement : { *(.altinstr_replacement) } /* .exit.text is discard at runtime, not link time, to deal with references from .altinstructions and .eh_frame */ - .exit.text : { *(.exit.text) } - .exit.data : { *(.exit.data) } + .exit.text : { EXIT_TEXT; } + .exit.data : { EXIT_DATA; } -#ifdef CONFIG_BLK_DEV_INITRD - . = ALIGN(PAGE_SIZE); - __initramfs_start = .; - .init.ramfs : { *(.init.ramfs) } - __initramfs_end = .; -#endif + .init.ramfs : { INIT_RAM_FS; } PERCPU(32) . = ALIGN(PAGE_SIZE); __init_end = .; /* freed after init ends here */ - __bss_start = .; /* BSS */ - .bss : { - *(.bss.page_aligned) - *(.bss) - } - . = ALIGN(4); - __bss_stop = .; + BSS(4) _end = . ; @@ -145,7 +117,7 @@ SECTIONS /* Sections to be discarded */ /DISCARD/ : { - *(.exitcall.exit) + EXIT_CALL } STABS_DEBUG diff --git a/arch/mn10300/mm/fault.c b/arch/mn10300/mm/fault.c index 33cf25025da..a62e1e138bc 100644 --- a/arch/mn10300/mm/fault.c +++ b/arch/mn10300/mm/fault.c @@ -258,7 +258,7 @@ good_area: * make sure we exit gracefully rather than endlessly redo * the fault. */ - fault = handle_mm_fault(mm, vma, address, write); + fault = handle_mm_fault(mm, vma, address, write ? FAULT_FLAG_WRITE : 0); if (unlikely(fault & VM_FAULT_ERROR)) { if (fault & VM_FAULT_OOM) goto out_of_memory; diff --git a/arch/mn10300/mm/tlb-mn10300.S b/arch/mn10300/mm/tlb-mn10300.S index 789208094e9..7095147dcb8 100644 --- a/arch/mn10300/mm/tlb-mn10300.S +++ b/arch/mn10300/mm/tlb-mn10300.S @@ -165,24 +165,6 @@ ENTRY(itlb_aerror) ENTRY(dtlb_aerror) and ~EPSW_NMID,epsw add -4,sp - mov d1,(sp) - - movhu (MMUFCR_DFC),d1 # is it the initial valid write - # to this page? - and MMUFCR_xFC_INITWR,d1 - beq dtlb_pagefault # jump if not - - mov (DPTEL),d1 # set the dirty bit - # (don't replace with BSET!) - or _PAGE_DIRTY,d1 - mov d1,(DPTEL) - mov (sp),d1 - add 4,sp - rti - - ALIGN -dtlb_pagefault: - mov (sp),d1 SAVE_ALL add -4,sp # need to pass three params |