#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/bootinfo.h>
+#include <asm/reg.h>
/*
* Called by kernel/ptrace.c when detaching..
/* Nothing to do.. */
}
+/*
+ * Read a general register set. We always use the 64-bit format, even
+ * for 32-bit kernels and for 32-bit processes on a 64-bit kernel.
+ * Registers are sign extended to fill the available space.
+ */
+int ptrace_getregs (struct task_struct *child, __s64 __user *data)
+{
+ struct pt_regs *regs;
+ int i;
+
+ if (!access_ok(VERIFY_WRITE, data, 38 * 8))
+ return -EIO;
+
+ regs = (struct pt_regs *) ((unsigned long) child->thread_info +
+ THREAD_SIZE - 32 - sizeof(struct pt_regs));
+
+ for (i = 0; i < 32; i++)
+ __put_user (regs->regs[i], data + i);
+ __put_user (regs->lo, data + EF_LO - EF_R0);
+ __put_user (regs->hi, data + EF_HI - EF_R0);
+ __put_user (regs->cp0_epc, data + EF_CP0_EPC - EF_R0);
+ __put_user (regs->cp0_badvaddr, data + EF_CP0_BADVADDR - EF_R0);
+ __put_user (regs->cp0_status, data + EF_CP0_STATUS - EF_R0);
+ __put_user (regs->cp0_cause, data + EF_CP0_CAUSE - EF_R0);
+
+ return 0;
+}
+
+/*
+ * Write a general register set. As for PTRACE_GETREGS, we always use
+ * the 64-bit format. On a 32-bit kernel only the lower order half
+ * (according to endianness) will be used.
+ */
+int ptrace_setregs (struct task_struct *child, __s64 __user *data)
+{
+ struct pt_regs *regs;
+ int i;
+
+ if (!access_ok(VERIFY_READ, data, 38 * 8))
+ return -EIO;
+
+ regs = (struct pt_regs *) ((unsigned long) child->thread_info +
+ THREAD_SIZE - 32 - sizeof(struct pt_regs));
+
+ for (i = 0; i < 32; i++)
+ __get_user (regs->regs[i], data + i);
+ __get_user (regs->lo, data + EF_LO - EF_R0);
+ __get_user (regs->hi, data + EF_HI - EF_R0);
+ __get_user (regs->cp0_epc, data + EF_CP0_EPC - EF_R0);
+
+ /* badvaddr, status, and cause may not be written. */
+
+ return 0;
+}
+
+int ptrace_getfpregs (struct task_struct *child, __u32 __user *data)
+{
+ int i;
+
+ if (!access_ok(VERIFY_WRITE, data, 33 * 8))
+ return -EIO;
+
+ if (tsk_used_math(child)) {
+ fpureg_t *fregs = get_fpu_regs(child);
+ for (i = 0; i < 32; i++)
+ __put_user (fregs[i], i + (__u64 __user *) data);
+ } else {
+ for (i = 0; i < 32; i++)
+ __put_user ((__u64) -1, i + (__u64 __user *) data);
+ }
+
+ if (cpu_has_fpu) {
+ unsigned int flags, tmp;
+
+ __put_user (child->thread.fpu.hard.fcr31, data + 64);
+
+ flags = read_c0_status();
+ __enable_fpu();
+ __asm__ __volatile__("cfc1\t%0,$0" : "=r" (tmp));
+ write_c0_status(flags);
+ __put_user (tmp, data + 65);
+ } else {
+ __put_user (child->thread.fpu.soft.fcr31, data + 64);
+ __put_user ((__u32) 0, data + 65);
+ }
+
+ return 0;
+}
+
+int ptrace_setfpregs (struct task_struct *child, __u32 __user *data)
+{
+ fpureg_t *fregs;
+ int i;
+
+ if (!access_ok(VERIFY_READ, data, 33 * 8))
+ return -EIO;
+
+ fregs = get_fpu_regs(child);
+
+ for (i = 0; i < 32; i++)
+ __get_user (fregs[i], i + (__u64 __user *) data);
+
+ if (cpu_has_fpu)
+ __get_user (child->thread.fpu.hard.fcr31, data + 64);
+ else
+ __get_user (child->thread.fpu.soft.fcr31, data + 64);
+
+ /* FIR may not be written. */
+
+ return 0;
+}
+
asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
{
struct task_struct *child;
break;
}
+ case PTRACE_GETREGS:
+ ret = ptrace_getregs (child, (__u64 __user *) data);
+ break;
+
+ case PTRACE_SETREGS:
+ ret = ptrace_setregs (child, (__u64 __user *) data);
+ break;
+
+ case PTRACE_GETFPREGS:
+ ret = ptrace_getfpregs (child, (__u32 __user *) data);
+ break;
+
+ case PTRACE_SETFPREGS:
+ ret = ptrace_setfpregs (child, (__u32 __user *) data);
+ break;
+
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
#include <asm/uaccess.h>
#include <asm/bootinfo.h>
+int ptrace_getregs (struct task_struct *child, __s64 __user *data);
+int ptrace_setregs (struct task_struct *child, __s64 __user *data);
+
+int ptrace_getfpregs (struct task_struct *child, __u32 __user *data);
+int ptrace_setfpregs (struct task_struct *child, __u32 __user *data);
+
/*
* Tracing a 32-bit process with a 64-bit strace and vice versa will not
* work. I don't know how to fix this.
break;
}
+ /*
+ * Read 4 bytes of the other process' storage
+ * data is a pointer specifying where the user wants the
+ * 4 bytes copied into
+ * addr is a pointer in the user's storage that contains an 8 byte
+ * address in the other process of the 4 bytes that is to be read
+ * (this is run in a 32-bit process looking at a 64-bit process)
+ * when I and D space are separate, these will need to be fixed.
+ */
+ case PTRACE_PEEKTEXT_3264:
+ case PTRACE_PEEKDATA_3264: {
+ u32 tmp;
+ int copied;
+ u32 __user * addrOthers;
+
+ ret = -EIO;
+
+ /* Get the addr in the other process that we want to read */
+ if (get_user(addrOthers, (u32 __user * __user *) (unsigned long) addr) != 0)
+ break;
+
+ copied = access_process_vm(child, (u64)addrOthers, &tmp,
+ sizeof(tmp), 0);
+ if (copied != sizeof(tmp))
+ break;
+ ret = put_user(tmp, (u32 __user *) (unsigned long) data);
+ break;
+ }
+
/* Read the word at location addr in the USER area. */
case PTRACE_PEEKUSR: {
struct pt_regs *regs;
ret = -EIO;
break;
+ /*
+ * Write 4 bytes into the other process' storage
+ * data is the 4 bytes that the user wants written
+ * addr is a pointer in the user's storage that contains an
+ * 8 byte address in the other process where the 4 bytes
+ * that is to be written
+ * (this is run in a 32-bit process looking at a 64-bit process)
+ * when I and D space are separate, these will need to be fixed.
+ */
+ case PTRACE_POKETEXT_3264:
+ case PTRACE_POKEDATA_3264: {
+ u32 __user * addrOthers;
+
+ /* Get the addr in the other process that we want to write into */
+ ret = -EIO;
+ if (get_user(addrOthers, (u32 __user * __user *) (unsigned long) addr) != 0)
+ break;
+ ret = 0;
+ if (access_process_vm(child, (u64)addrOthers, &data,
+ sizeof(data), 1) == sizeof(data))
+ break;
+ ret = -EIO;
+ break;
+ }
+
case PTRACE_POKEUSR: {
struct pt_regs *regs;
ret = 0;
break;
}
+ case PTRACE_GETREGS:
+ ret = ptrace_getregs (child, (__u64 __user *) (__u64) data);
+ break;
+
+ case PTRACE_SETREGS:
+ ret = ptrace_setregs (child, (__u64 __user *) (__u64) data);
+ break;
+
+ case PTRACE_GETFPREGS:
+ ret = ptrace_getfpregs (child, (__u32 __user *) (__u64) data);
+ break;
+
+ case PTRACE_SETFPREGS:
+ ret = ptrace_setfpregs (child, (__u32 __user *) (__u64) data);
+ break;
+
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
(unsigned int __user *) (unsigned long) data);
break;
+ case PTRACE_GET_THREAD_AREA_3264:
+ ret = put_user(child->thread_info->tp_value,
+ (unsigned long __user *) (unsigned long) data);
+ break;
+
default:
ret = ptrace_request(child, request, addr, data);
break;
};
/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
-/* #define PTRACE_GETREGS 12 */
-/* #define PTRACE_SETREGS 13 */
-/* #define PTRACE_GETFPREGS 14 */
-/* #define PTRACE_SETFPREGS 15 */
+#define PTRACE_GETREGS 12
+#define PTRACE_SETREGS 13
+#define PTRACE_GETFPREGS 14
+#define PTRACE_SETFPREGS 15
/* #define PTRACE_GETFPXREGS 18 */
/* #define PTRACE_SETFPXREGS 19 */
#define PTRACE_GET_THREAD_AREA 25
#define PTRACE_SET_THREAD_AREA 26
+/* Calls to trace a 64bit program from a 32bit program. */
+#define PTRACE_PEEKTEXT_3264 0xc0
+#define PTRACE_PEEKDATA_3264 0xc1
+#define PTRACE_POKETEXT_3264 0xc2
+#define PTRACE_POKEDATA_3264 0xc3
+#define PTRACE_GET_THREAD_AREA_3264 0xc4
+
#ifdef __KERNEL__
#include <linux/linkage.h>
projects / deliverable / linux.git / commitdiff
