diff options
Diffstat (limited to 'arch/powerpc/kernel/ptrace32.c')
| -rw-r--r-- | arch/powerpc/kernel/ptrace32.c | 75 |
1 files changed, 31 insertions, 44 deletions
diff --git a/arch/powerpc/kernel/ptrace32.c b/arch/powerpc/kernel/ptrace32.c index 8a6daf4129f..f52b7db327c 100644 --- a/arch/powerpc/kernel/ptrace32.c +++ b/arch/powerpc/kernel/ptrace32.c @@ -32,42 +32,17 @@ #include <asm/uaccess.h> #include <asm/page.h> #include <asm/pgtable.h> -#include <asm/system.h> +#include <asm/switch_to.h> /* * does not yet catch signals sent when the child dies. * in exit.c or in signal.c. */ -/* - * Here are the old "legacy" powerpc specific getregs/setregs ptrace calls, - * we mark them as obsolete now, they will be removed in a future version - */ -static long compat_ptrace_old(struct task_struct *child, long request, - long addr, long data) -{ - switch (request) { - case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */ - return copy_regset_to_user(child, - task_user_regset_view(current), 0, - 0, 32 * sizeof(compat_long_t), - compat_ptr(data)); - - case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */ - return copy_regset_from_user(child, - task_user_regset_view(current), 0, - 0, 32 * sizeof(compat_long_t), - compat_ptr(data)); - } - - return -EPERM; -} - /* Macros to workout the correct index for the FPR in the thread struct */ #define FPRNUMBER(i) (((i) - PT_FPR0) >> 1) #define FPRHALF(i) (((i) - PT_FPR0) & 1) #define FPRINDEX(i) TS_FPRWIDTH * FPRNUMBER(i) * 2 + FPRHALF(i) -#define FPRINDEX_3264(i) (TS_FPRWIDTH * ((i) - PT_FPR0)) long compat_arch_ptrace(struct task_struct *child, compat_long_t request, compat_ulong_t caddr, compat_ulong_t cdata) @@ -119,7 +94,9 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, CHECK_FULL_REGS(child->thread.regs); if (index < PT_FPR0) { - tmp = ptrace_get_reg(child, index); + ret = ptrace_get_reg(child, index, &tmp); + if (ret) + break; } else { flush_fp_to_thread(child); /* @@ -127,7 +104,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, * to be an array of unsigned int (32 bits) - the * index passed in is based on this assumption. */ - tmp = ((unsigned int *)child->thread.fpr) + tmp = ((unsigned int *)child->thread.fp_state.fpr) [FPRINDEX(index)]; } ret = put_user((unsigned int)tmp, (u32 __user *)data); @@ -169,10 +146,13 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, if (numReg >= PT_FPR0) { flush_fp_to_thread(child); /* get 64 bit FPR */ - tmp = ((u64 *)child->thread.fpr) - [FPRINDEX_3264(numReg)]; + tmp = child->thread.fp_state.fpr[numReg - PT_FPR0][0]; } else { /* register within PT_REGS struct */ - tmp = ptrace_get_reg(child, numReg); + unsigned long tmp2; + ret = ptrace_get_reg(child, numReg, &tmp2); + if (ret) + break; + tmp = tmp2; } reg32bits = ((u32*)&tmp)[part]; ret = put_user(reg32bits, (u32 __user *)data); @@ -225,7 +205,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, * to be an array of unsigned int (32 bits) - the * index passed in is based on this assumption. */ - ((unsigned int *)child->thread.fpr) + ((unsigned int *)child->thread.fp_state.fpr) [FPRINDEX(index)] = data; ret = 0; } @@ -256,7 +236,10 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, break; CHECK_FULL_REGS(child->thread.regs); if (numReg < PT_FPR0) { - unsigned long freg = ptrace_get_reg(child, numReg); + unsigned long freg; + ret = ptrace_get_reg(child, numReg, &freg); + if (ret) + break; if (index % 2) freg = (freg & ~0xfffffffful) | (data & 0xfffffffful); else @@ -266,8 +249,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, u64 *tmp; flush_fp_to_thread(child); /* get 64 bit FPR ... */ - tmp = &(((u64 *)child->thread.fpr) - [FPRINDEX_3264(numReg)]); + tmp = &child->thread.fp_state.fpr[numReg - PT_FPR0][0]; /* ... write the 32 bit part we want */ ((u32 *)tmp)[index % 2] = data; ret = 0; @@ -276,11 +258,21 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, } case PTRACE_GET_DEBUGREG: { +#ifndef CONFIG_PPC_ADV_DEBUG_REGS + unsigned long dabr_fake; +#endif ret = -EINVAL; /* We only support one DABR and no IABRS at the moment */ if (addr > 0) break; - ret = put_user(child->thread.dabr, (u32 __user *)data); +#ifdef CONFIG_PPC_ADV_DEBUG_REGS + ret = put_user(child->thread.debug.dac1, (u32 __user *)data); +#else + dabr_fake = ( + (child->thread.hw_brk.address & (~HW_BRK_TYPE_DABR)) | + (child->thread.hw_brk.type & HW_BRK_TYPE_DABR)); + ret = put_user(dabr_fake, (u32 __user *)data); +#endif break; } @@ -304,23 +296,18 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, case PTRACE_SETVSRREGS: case PTRACE_GETREGS64: case PTRACE_SETREGS64: - case PPC_PTRACE_GETFPREGS: - case PPC_PTRACE_SETFPREGS: case PTRACE_KILL: case PTRACE_SINGLESTEP: case PTRACE_DETACH: case PTRACE_SET_DEBUGREG: case PTRACE_SYSCALL: case PTRACE_CONT: + case PPC_PTRACE_GETHWDBGINFO: + case PPC_PTRACE_SETHWDEBUG: + case PPC_PTRACE_DELHWDEBUG: ret = arch_ptrace(child, request, addr, data); break; - /* Old reverse args ptrace callss */ - case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */ - case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */ - ret = compat_ptrace_old(child, request, addr, data); - break; - default: ret = compat_ptrace_request(child, request, addr, data); break; |