diff options
| -rw-r--r-- | arch/um/kernel/ptrace.c | 18 | ||||
| -rw-r--r-- | arch/um/sys-i386/ptrace.c | 73 | ||||
| -rw-r--r-- | arch/um/sys-x86_64/ptrace.c | 53 | ||||
| -rw-r--r-- | include/asm-um/page.h | 1 | ||||
| -rw-r--r-- | include/asm-um/ptrace-generic.h | 11 | ||||
| -rw-r--r-- | include/asm-um/ptrace-i386.h | 6 |
6 files changed, 107 insertions, 55 deletions
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c index db55a017e9b9..2511f9199417 100644 --- a/arch/um/kernel/ptrace.c +++ b/arch/um/kernel/ptrace.c @@ -143,22 +143,14 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) #endif #ifdef PTRACE_GETFPREGS case PTRACE_GETFPREGS: /* Get the child FPU state. */ - ret = get_fpregs(data, child); + ret = get_fpregs((struct user_i387_struct __user *) data, + child); break; #endif #ifdef PTRACE_SETFPREGS case PTRACE_SETFPREGS: /* Set the child FPU state. */ - ret = set_fpregs(data, child); - break; -#endif -#ifdef PTRACE_GETFPXREGS - case PTRACE_GETFPXREGS: /* Get the child FPU state. */ - ret = get_fpxregs(data, child); - break; -#endif -#ifdef PTRACE_SETFPXREGS - case PTRACE_SETFPXREGS: /* Set the child FPU state. */ - ret = set_fpxregs(data, child); + ret = set_fpregs((struct user_i387_struct __user *) data, + child); break; #endif case PTRACE_GET_THREAD_AREA: @@ -227,6 +219,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) #endif default: ret = ptrace_request(child, request, addr, data); + if (ret == -EIO) + ret = subarch_ptrace(child, request, addr, data); break; } diff --git a/arch/um/sys-i386/ptrace.c b/arch/um/sys-i386/ptrace.c index cb899dd1c6b5..659011df1e9a 100644 --- a/arch/um/sys-i386/ptrace.c +++ b/arch/um/sys-i386/ptrace.c @@ -6,6 +6,7 @@ #include "linux/mm.h" #include "linux/sched.h" #include "asm/uaccess.h" +#include "skas.h" extern int arch_switch_tls(struct task_struct *from, struct task_struct *to); @@ -144,48 +145,64 @@ int peek_user(struct task_struct *child, long addr, long data) return put_user(tmp, (unsigned long __user *) data); } -static inline int convert_fxsr_to_user(struct _fpstate __user *buf, - struct pt_regs *regs) +int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child) { - return 0; -} + int err, n, cpu = ((struct thread_info *) child->stack)->cpu; + long fpregs[HOST_FP_SIZE]; -static inline int convert_fxsr_from_user(struct pt_regs *regs, - struct _fpstate __user *buf) -{ - return 0; + BUG_ON(sizeof(*buf) != sizeof(fpregs)); + err = save_fp_registers(userspace_pid[cpu], fpregs); + if (err) + return err; + + n = copy_to_user((void *) buf, fpregs, sizeof(fpregs)); + if(n > 0) + return -EFAULT; + + return n; } -int get_fpregs(unsigned long buf, struct task_struct *child) +int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child) { - int err; + int n, cpu = ((struct thread_info *) child->stack)->cpu; + long fpregs[HOST_FP_SIZE]; - err = convert_fxsr_to_user((struct _fpstate __user *) buf, - &child->thread.regs); - if (err) + BUG_ON(sizeof(*buf) != sizeof(fpregs)); + n = copy_from_user(fpregs, (void *) buf, sizeof(fpregs)); + if (n > 0) return -EFAULT; - return 0; + + return restore_fp_registers(userspace_pid[cpu], fpregs); } -int set_fpregs(unsigned long buf, struct task_struct *child) +int get_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child) { - int err; + int err, n, cpu = ((struct thread_info *) child->stack)->cpu; + long fpregs[HOST_XFP_SIZE]; - err = convert_fxsr_from_user(&child->thread.regs, - (struct _fpstate __user *) buf); + BUG_ON(sizeof(*buf) != sizeof(fpregs)); + err = save_fpx_registers(userspace_pid[cpu], fpregs); if (err) + return err; + + n = copy_to_user((void *) buf, fpregs, sizeof(fpregs)); + if(n > 0) return -EFAULT; - return 0; -} -int get_fpxregs(unsigned long buf, struct task_struct *tsk) -{ - return 0; + return n; } -int set_fpxregs(unsigned long buf, struct task_struct *tsk) +int set_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child) { - return 0; + int n, cpu = ((struct thread_info *) child->stack)->cpu; + long fpregs[HOST_XFP_SIZE]; + + BUG_ON(sizeof(*buf) != sizeof(fpregs)); + n = copy_from_user(fpregs, (void *) buf, sizeof(fpregs)); + if (n > 0) + return -EFAULT; + + return restore_fpx_registers(userspace_pid[cpu], fpregs); } #ifdef notdef @@ -209,3 +226,9 @@ int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu ) { return 1; } + +long subarch_ptrace(struct task_struct *child, long request, long addr, + long data) +{ + return -EIO; +} diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c index 1970d78aa528..b9032992a997 100644 --- a/arch/um/sys-x86_64/ptrace.c +++ b/arch/um/sys-x86_64/ptrace.c @@ -156,28 +156,53 @@ int is_syscall(unsigned long addr) return(instr == 0x050f); } -int get_fpregs(unsigned long buf, struct task_struct *child) +int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child) { - panic("get_fpregs"); - return(0); -} + int err, n, cpu = ((struct thread_info *) child->stack)->cpu; + long fpregs[HOST_FP_SIZE]; -int set_fpregs(unsigned long buf, struct task_struct *child) -{ - panic("set_fpregs"); - return(0); + BUG_ON(sizeof(*buf) != sizeof(fpregs)); + err = save_fp_registers(userspace_pid[cpu], fpregs); + if (err) + return err; + + n = copy_to_user((void *) buf, fpregs, sizeof(fpregs)); + if(n > 0) + return -EFAULT; + + return n; } -int get_fpxregs(unsigned long buf, struct task_struct *tsk) +int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child) { - panic("get_fpxregs"); - return(0); + int n, cpu = ((struct thread_info *) child->stack)->cpu; + long fpregs[HOST_FP_SIZE]; + + BUG_ON(sizeof(*buf) != sizeof(fpregs)); + n = copy_from_user(fpregs, (void *) buf, sizeof(fpregs)); + if (n > 0) + return -EFAULT; + + return restore_fp_registers(userspace_pid[cpu], fpregs); } -int set_fpxregs(unsigned long buf, struct task_struct *tsk) +long subarch_ptrace(struct task_struct *child, long request, long addr, + long data) { - panic("set_fxpregs"); - return(0); + int ret = -EIO; + + switch (request) { + case PTRACE_GETFPXREGS: /* Get the child FPU state. */ + ret = get_fpregs((struct user_i387_struct __user *) data, + child); + break; + case PTRACE_SETFPXREGS: /* Set the child FPU state. */ + ret = set_fpregs((struct user_i387_struct __user *) data, + child); + break; + } + + return ret; } /* diff --git a/include/asm-um/page.h b/include/asm-um/page.h index 8e310d81e5b4..4b424c75fca5 100644 --- a/include/asm-um/page.h +++ b/include/asm-um/page.h @@ -9,6 +9,7 @@ struct page; +#include <linux/types.h> #include <asm/vm-flags.h> /* PAGE_SHIFT determines the page size */ diff --git a/include/asm-um/ptrace-generic.h b/include/asm-um/ptrace-generic.h index 919581d713bd..6aefcd32fc61 100644 --- a/include/asm-um/ptrace-generic.h +++ b/include/asm-um/ptrace-generic.h @@ -9,6 +9,7 @@ #ifndef __ASSEMBLY__ #include "asm/arch/ptrace-abi.h" +#include <asm/user.h> #include "sysdep/ptrace.h" struct pt_regs { @@ -35,12 +36,14 @@ struct pt_regs { struct task_struct; +extern long subarch_ptrace(struct task_struct *child, long request, long addr, + long data); extern unsigned long getreg(struct task_struct *child, int regno); extern int putreg(struct task_struct *child, int regno, unsigned long value); -extern int get_fpregs(unsigned long buf, struct task_struct *child); -extern int set_fpregs(unsigned long buf, struct task_struct *child); -extern int get_fpxregs(unsigned long buf, struct task_struct *child); -extern int set_fpxregs(unsigned long buf, struct task_struct *tsk); +extern int get_fpregs(struct user_i387_struct __user *buf, + struct task_struct *child); +extern int set_fpregs(struct user_i387_struct __user *buf, + struct task_struct *child); extern void show_regs(struct pt_regs *regs); diff --git a/include/asm-um/ptrace-i386.h b/include/asm-um/ptrace-i386.h index 65102c883440..b2d24c5ea2c3 100644 --- a/include/asm-um/ptrace-i386.h +++ b/include/asm-um/ptrace-i386.h @@ -10,6 +10,7 @@ #include "linux/compiler.h" #include "asm/ptrace-generic.h" +#include <asm/user.h> #include "sysdep/ptrace.h" #define PT_REGS_EAX(r) UPT_EAX(&(r)->regs) @@ -45,6 +46,11 @@ */ struct user_desc; +extern int get_fpxregs(struct user_fxsr_struct __user *buf, + struct task_struct *child); +extern int set_fpxregs(struct user_fxsr_struct __user *buf, + struct task_struct *tsk); + extern int ptrace_get_thread_area(struct task_struct *child, int idx, struct user_desc __user *user_desc); |
