diff options
| -rw-r--r-- | arch/powerpc/kernel/ptrace-common.h | 177 | ||||
| -rw-r--r-- | arch/powerpc/kernel/ptrace-ppc32.h | 65 | ||||
| -rw-r--r-- | arch/powerpc/kernel/ptrace.c | 233 | ||||
| -rw-r--r-- | arch/powerpc/kernel/ptrace32.c | 11 | ||||
| -rw-r--r-- | include/asm-powerpc/ptrace.h | 5 |
5 files changed, 237 insertions, 254 deletions
diff --git a/arch/powerpc/kernel/ptrace-common.h b/arch/powerpc/kernel/ptrace-common.h deleted file mode 100644 index 21884535fee6..000000000000 --- a/arch/powerpc/kernel/ptrace-common.h +++ /dev/null @@ -1,177 +0,0 @@ -/* - * Copyright (c) 2002 Stephen Rothwell, IBM Coproration - * Copyright (c) 2007 Benjamin Herrenschmidt, IBM Coproration - * Extracted from ptrace.c and ptrace32.c - * - * This file is subject to the terms and conditions of the GNU General - * Public License. See the file README.legal in the main directory of - * this archive for more details. - */ - -#ifndef _POWERPC_PTRACE_COMMON_H -#define _POWERPC_PTRACE_COMMON_H - -/* - * Get contents of register REGNO in task TASK. - */ -static inline unsigned long get_reg(struct task_struct *task, int regno) -{ - unsigned long tmp = 0; - - if (task->thread.regs == NULL) - return -EIO; - - if (regno == PT_MSR) { - tmp = ((unsigned long *)task->thread.regs)[PT_MSR]; - return PT_MUNGE_MSR(tmp, task); - } - - if (regno < (sizeof(struct pt_regs) / sizeof(unsigned long))) - return ((unsigned long *)task->thread.regs)[regno]; - - return -EIO; -} - -/* - * Write contents of register REGNO in task TASK. - */ -static inline int put_reg(struct task_struct *task, int regno, - unsigned long data) -{ - if (task->thread.regs == NULL) - return -EIO; - - if (regno <= PT_MAX_PUT_REG) { - if (regno == PT_MSR) - data = (data & MSR_DEBUGCHANGE) - | (task->thread.regs->msr & ~MSR_DEBUGCHANGE); - ((unsigned long *)task->thread.regs)[regno] = data; - return 0; - } - return -EIO; -} - - -static inline int get_fpregs(void __user *data, - struct task_struct *task, - int has_fpscr) -{ - unsigned int count = has_fpscr ? 33 : 32; - - if (copy_to_user(data, task->thread.fpr, count * sizeof(double))) - return -EFAULT; - return 0; -} - -static inline int set_fpregs(void __user *data, - struct task_struct *task, - int has_fpscr) -{ - unsigned int count = has_fpscr ? 33 : 32; - - if (copy_from_user(task->thread.fpr, data, count * sizeof(double))) - return -EFAULT; - return 0; -} - - -#ifdef CONFIG_ALTIVEC -/* - * Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go. - * The transfer totals 34 quadword. Quadwords 0-31 contain the - * corresponding vector registers. Quadword 32 contains the vscr as the - * last word (offset 12) within that quadword. Quadword 33 contains the - * vrsave as the first word (offset 0) within the quadword. - * - * This definition of the VMX state is compatible with the current PPC32 - * ptrace interface. This allows signal handling and ptrace to use the - * same structures. This also simplifies the implementation of a bi-arch - * (combined (32- and 64-bit) gdb. - */ - -/* - * Get contents of AltiVec register state in task TASK - */ -static inline int get_vrregs(unsigned long __user *data, - struct task_struct *task) -{ - unsigned long regsize; - - /* copy AltiVec registers VR[0] .. VR[31] */ - regsize = 32 * sizeof(vector128); - if (copy_to_user(data, task->thread.vr, regsize)) - return -EFAULT; - data += (regsize / sizeof(unsigned long)); - - /* copy VSCR */ - regsize = 1 * sizeof(vector128); - if (copy_to_user(data, &task->thread.vscr, regsize)) - return -EFAULT; - data += (regsize / sizeof(unsigned long)); - - /* copy VRSAVE */ - if (put_user(task->thread.vrsave, (u32 __user *)data)) - return -EFAULT; - - return 0; -} - -/* - * Write contents of AltiVec register state into task TASK. - */ -static inline int set_vrregs(struct task_struct *task, - unsigned long __user *data) -{ - unsigned long regsize; - - /* copy AltiVec registers VR[0] .. VR[31] */ - regsize = 32 * sizeof(vector128); - if (copy_from_user(task->thread.vr, data, regsize)) - return -EFAULT; - data += (regsize / sizeof(unsigned long)); - - /* copy VSCR */ - regsize = 1 * sizeof(vector128); - if (copy_from_user(&task->thread.vscr, data, regsize)) - return -EFAULT; - data += (regsize / sizeof(unsigned long)); - - /* copy VRSAVE */ - if (get_user(task->thread.vrsave, (u32 __user *)data)) - return -EFAULT; - - return 0; -} -#endif /* CONFIG_ALTIVEC */ - -static inline void set_single_step(struct task_struct *task) -{ - struct pt_regs *regs = task->thread.regs; - - if (regs != NULL) { -#if defined(CONFIG_40x) || defined(CONFIG_BOOKE) - task->thread.dbcr0 = DBCR0_IDM | DBCR0_IC; - regs->msr |= MSR_DE; -#else - regs->msr |= MSR_SE; -#endif - } - set_tsk_thread_flag(task, TIF_SINGLESTEP); -} - -static inline void clear_single_step(struct task_struct *task) -{ - struct pt_regs *regs = task->thread.regs; - - if (regs != NULL) { -#if defined(CONFIG_40x) || defined(CONFIG_BOOKE) - task->thread.dbcr0 = 0; - regs->msr &= ~MSR_DE; -#else - regs->msr &= ~MSR_SE; -#endif - } - clear_tsk_thread_flag(task, TIF_SINGLESTEP); -} - -#endif /* _POWERPC_PTRACE_COMMON_H */ diff --git a/arch/powerpc/kernel/ptrace-ppc32.h b/arch/powerpc/kernel/ptrace-ppc32.h index 24d7a2f680af..f1fd5b8a868d 100644 --- a/arch/powerpc/kernel/ptrace-ppc32.h +++ b/arch/powerpc/kernel/ptrace-ppc32.h @@ -32,69 +32,4 @@ #define PT_MUNGE_MSR(msr, task) (msr) -#ifdef CONFIG_SPE - -/* - * For get_evrregs/set_evrregs functions 'data' has the following layout: - * - * struct { - * u32 evr[32]; - * u64 acc; - * u32 spefscr; - * } - */ - -/* - * Get contents of SPE register state in task TASK. - */ -static inline int get_evrregs(unsigned long *data, struct task_struct *task) -{ - int i; - - if (!access_ok(VERIFY_WRITE, data, 35 * sizeof(unsigned long))) - return -EFAULT; - - /* copy SPEFSCR */ - if (__put_user(task->thread.spefscr, &data[34])) - return -EFAULT; - - /* copy SPE registers EVR[0] .. EVR[31] */ - for (i = 0; i < 32; i++, data++) - if (__put_user(task->thread.evr[i], data)) - return -EFAULT; - - /* copy ACC */ - if (__put_user64(task->thread.acc, (unsigned long long *)data)) - return -EFAULT; - - return 0; -} - -/* - * Write contents of SPE register state into task TASK. - */ -static inline int set_evrregs(struct task_struct *task, unsigned long *data) -{ - int i; - - if (!access_ok(VERIFY_READ, data, 35 * sizeof(unsigned long))) - return -EFAULT; - - /* copy SPEFSCR */ - if (__get_user(task->thread.spefscr, &data[34])) - return -EFAULT; - - /* copy SPE registers EVR[0] .. EVR[31] */ - for (i = 0; i < 32; i++, data++) - if (__get_user(task->thread.evr[i], data)) - return -EFAULT; - /* copy ACC */ - if (__get_user64(task->thread.acc, (unsigned long long*)data)) - return -EFAULT; - - return 0; -} -#endif /* CONFIG_SPE */ - - #endif /* _POWERPC_PTRACE_PPC32_H */ diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c index 230d5f5bfab6..875bfda90b21 100644 --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c @@ -41,14 +41,235 @@ #include "ptrace-ppc32.h" #endif -#include "ptrace-common.h" - /* * does not yet catch signals sent when the child dies. * in exit.c or in signal.c. */ /* + * Get contents of register REGNO in task TASK. + */ +unsigned long ptrace_get_reg(struct task_struct *task, int regno) +{ + unsigned long tmp = 0; + + if (task->thread.regs == NULL) + return -EIO; + + if (regno == PT_MSR) { + tmp = ((unsigned long *)task->thread.regs)[PT_MSR]; + return PT_MUNGE_MSR(tmp, task); + } + + if (regno < (sizeof(struct pt_regs) / sizeof(unsigned long))) + return ((unsigned long *)task->thread.regs)[regno]; + + return -EIO; +} + +/* + * Write contents of register REGNO in task TASK. + */ +int ptrace_put_reg(struct task_struct *task, int regno, unsigned long data) +{ + if (task->thread.regs == NULL) + return -EIO; + + if (regno <= PT_MAX_PUT_REG) { + if (regno == PT_MSR) + data = (data & MSR_DEBUGCHANGE) + | (task->thread.regs->msr & ~MSR_DEBUGCHANGE); + ((unsigned long *)task->thread.regs)[regno] = data; + return 0; + } + return -EIO; +} + + +static int get_fpregs(void __user *data, struct task_struct *task, + int has_fpscr) +{ + unsigned int count = has_fpscr ? 33 : 32; + + if (copy_to_user(data, task->thread.fpr, count * sizeof(double))) + return -EFAULT; + return 0; +} + +static int set_fpregs(void __user *data, struct task_struct *task, + int has_fpscr) +{ + unsigned int count = has_fpscr ? 33 : 32; + + if (copy_from_user(task->thread.fpr, data, count * sizeof(double))) + return -EFAULT; + return 0; +} + + +#ifdef CONFIG_ALTIVEC +/* + * Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go. + * The transfer totals 34 quadword. Quadwords 0-31 contain the + * corresponding vector registers. Quadword 32 contains the vscr as the + * last word (offset 12) within that quadword. Quadword 33 contains the + * vrsave as the first word (offset 0) within the quadword. + * + * This definition of the VMX state is compatible with the current PPC32 + * ptrace interface. This allows signal handling and ptrace to use the + * same structures. This also simplifies the implementation of a bi-arch + * (combined (32- and 64-bit) gdb. + */ + +/* + * Get contents of AltiVec register state in task TASK + */ +static int get_vrregs(unsigned long __user *data, struct task_struct *task) +{ + unsigned long regsize; + + /* copy AltiVec registers VR[0] .. VR[31] */ + regsize = 32 * sizeof(vector128); + if (copy_to_user(data, task->thread.vr, regsize)) + return -EFAULT; + data += (regsize / sizeof(unsigned long)); + + /* copy VSCR */ + regsize = 1 * sizeof(vector128); + if (copy_to_user(data, &task->thread.vscr, regsize)) + return -EFAULT; + data += (regsize / sizeof(unsigned long)); + + /* copy VRSAVE */ + if (put_user(task->thread.vrsave, (u32 __user *)data)) + return -EFAULT; + + return 0; +} + +/* + * Write contents of AltiVec register state into task TASK. + */ +static int set_vrregs(struct task_struct *task, unsigned long __user *data) +{ + unsigned long regsize; + + /* copy AltiVec registers VR[0] .. VR[31] */ + regsize = 32 * sizeof(vector128); + if (copy_from_user(task->thread.vr, data, regsize)) + return -EFAULT; + data += (regsize / sizeof(unsigned long)); + + /* copy VSCR */ + regsize = 1 * sizeof(vector128); + if (copy_from_user(&task->thread.vscr, data, regsize)) + return -EFAULT; + data += (regsize / sizeof(unsigned long)); + + /* copy VRSAVE */ + if (get_user(task->thread.vrsave, (u32 __user *)data)) + return -EFAULT; + + return 0; +} +#endif /* CONFIG_ALTIVEC */ + +#ifdef CONFIG_SPE + +/* + * For get_evrregs/set_evrregs functions 'data' has the following layout: + * + * struct { + * u32 evr[32]; + * u64 acc; + * u32 spefscr; + * } + */ + +/* + * Get contents of SPE register state in task TASK. + */ +static int get_evrregs(unsigned long *data, struct task_struct *task) +{ + int i; + + if (!access_ok(VERIFY_WRITE, data, 35 * sizeof(unsigned long))) + return -EFAULT; + + /* copy SPEFSCR */ + if (__put_user(task->thread.spefscr, &data[34])) + return -EFAULT; + + /* copy SPE registers EVR[0] .. EVR[31] */ + for (i = 0; i < 32; i++, data++) + if (__put_user(task->thread.evr[i], data)) + return -EFAULT; + + /* copy ACC */ + if (__put_user64(task->thread.acc, (unsigned long long *)data)) + return -EFAULT; + + return 0; +} + +/* + * Write contents of SPE register state into task TASK. + */ +static int set_evrregs(struct task_struct *task, unsigned long *data) +{ + int i; + + if (!access_ok(VERIFY_READ, data, 35 * sizeof(unsigned long))) + return -EFAULT; + + /* copy SPEFSCR */ + if (__get_user(task->thread.spefscr, &data[34])) + return -EFAULT; + + /* copy SPE registers EVR[0] .. EVR[31] */ + for (i = 0; i < 32; i++, data++) + if (__get_user(task->thread.evr[i], data)) + return -EFAULT; + /* copy ACC */ + if (__get_user64(task->thread.acc, (unsigned long long*)data)) + return -EFAULT; + + return 0; +} +#endif /* CONFIG_SPE */ + + +static void set_single_step(struct task_struct *task) +{ + struct pt_regs *regs = task->thread.regs; + + if (regs != NULL) { +#if defined(CONFIG_40x) || defined(CONFIG_BOOKE) + task->thread.dbcr0 = DBCR0_IDM | DBCR0_IC; + regs->msr |= MSR_DE; +#else + regs->msr |= MSR_SE; +#endif + } + set_tsk_thread_flag(task, TIF_SINGLESTEP); +} + +static void clear_single_step(struct task_struct *task) +{ + struct pt_regs *regs = task->thread.regs; + + if (regs != NULL) { +#if defined(CONFIG_40x) || defined(CONFIG_BOOKE) + task->thread.dbcr0 = 0; + regs->msr &= ~MSR_DE; +#else + regs->msr &= ~MSR_SE; +#endif + } + clear_tsk_thread_flag(task, TIF_SINGLESTEP); +} + +/* * Called by kernel/ptrace.c when detaching.. * * Make sure single step bits etc are not set. @@ -154,7 +375,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) CHECK_FULL_REGS(child->thread.regs); #endif if (index < PT_FPR0) { - tmp = get_reg(child, (int) index); + tmp = ptrace_get_reg(child, (int) index); } else { flush_fp_to_thread(child); tmp = ((unsigned long *)child->thread.fpr)[index - PT_FPR0]; @@ -195,7 +416,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) if (index == PT_ORIG_R3) break; if (index < PT_FPR0) { - ret = put_reg(child, index, data); + ret = ptrace_put_reg(child, index, data); } else { flush_fp_to_thread(child); ((unsigned long *)child->thread.fpr)[index - PT_FPR0] = data; @@ -282,7 +503,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) } ret = 0; for (ui = 0; ui < PT_REGS_COUNT; ui ++) { - ret |= __put_user(get_reg(child, ui), + ret |= __put_user(ptrace_get_reg(child, ui), (unsigned long __user *) data); data += sizeof(long); } @@ -305,7 +526,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) ret = __get_user(tmp, (unsigned long __user *) data); if (ret) break; - put_reg(child, ui, tmp); + ptrace_put_reg(child, ui, tmp); data += sizeof(long); } break; diff --git a/arch/powerpc/kernel/ptrace32.c b/arch/powerpc/kernel/ptrace32.c index 98b1580a2bc2..4511b422992f 100644 --- a/arch/powerpc/kernel/ptrace32.c +++ b/arch/powerpc/kernel/ptrace32.c @@ -34,7 +34,6 @@ #include <asm/system.h> #include "ptrace-ppc64.h" -#include "ptrace-common.h" /* * does not yet catch signals sent when the child dies. @@ -168,7 +167,7 @@ long compat_sys_ptrace(int request, int pid, unsigned long addr, break; if (index < PT_FPR0) { - tmp = get_reg(child, index); + tmp = ptrace_get_reg(child, index); } else { flush_fp_to_thread(child); /* @@ -215,7 +214,7 @@ long compat_sys_ptrace(int request, int pid, unsigned long addr, flush_fp_to_thread(child); tmp = ((unsigned long int *)child->thread.fpr)[numReg - PT_FPR0]; } else { /* register within PT_REGS struct */ - tmp = get_reg(child, numReg); + tmp = ptrace_get_reg(child, numReg); } reg32bits = ((u32*)&tmp)[part]; ret = put_user(reg32bits, (u32 __user *)data); @@ -274,7 +273,7 @@ long compat_sys_ptrace(int request, int pid, unsigned long addr, if (index == PT_ORIG_R3) break; if (index < PT_FPR0) { - ret = put_reg(child, index, data); + ret = ptrace_put_reg(child, index, data); } else { flush_fp_to_thread(child); /* @@ -346,7 +345,7 @@ long compat_sys_ptrace(int request, int pid, unsigned long addr, } ret = 0; for (ui = 0; ui < PT_REGS_COUNT; ui ++) { - ret |= __put_user(get_reg(child, ui), + ret |= __put_user(ptrace_get_reg(child, ui), (unsigned int __user *) data); data += sizeof(int); } @@ -366,7 +365,7 @@ long compat_sys_ptrace(int request, int pid, unsigned long addr, ret = __get_user(tmp, (unsigned int __user *) data); if (ret) break; - put_reg(child, ui, tmp); + ptrace_put_reg(child, ui, tmp); data += sizeof(int); } break; diff --git a/include/asm-powerpc/ptrace.h b/include/asm-powerpc/ptrace.h index 53d24584e968..13fccc5a4119 100644 --- a/include/asm-powerpc/ptrace.h +++ b/include/asm-powerpc/ptrace.h @@ -92,6 +92,11 @@ extern unsigned long profile_pc(struct pt_regs *regs); set_thread_flag(TIF_NOERROR); \ } while(0) +struct task_struct; +extern unsigned long ptrace_get_reg(struct task_struct *task, int regno); +extern int ptrace_put_reg(struct task_struct *task, int regno, + unsigned long data); + /* * We use the least-significant bit of the trap field to indicate * whether we have saved the full set of registers, or only a |