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[SPARC]: Move over to arch_ptrace().

Browse source 
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-02-07 03:00:17 -08:00
parent 190aa9f60f
commit 9775369ec0
6 changed files with 180 additions and 729 deletions
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17
arch/sparc/kernel/entry.S
View file

@ -1224,23 +1224,6 @@ sys_nis_syscall:
call c_sys_nis_syscall
mov %l5, %o7
.align 4
.globl sys_ptrace
sys_ptrace:
call do_ptrace
add %sp, STACKFRAME_SZ, %o0
ld [%curptr + TI_FLAGS], %l5
andcc %l5, _TIF_SYSCALL_TRACE, %g0
be 1f
nop
call syscall_trace
nop
1:
RESTORE_ALL
.align 4
.globl sys_execve
sys_execve:

448
arch/sparc/kernel/ptrace.c
View file

@ -26,215 +26,6 @@
#include <asm/system.h>
#include <asm/uaccess.h>
#define MAGIC_CONSTANT 0x80000000
/* Returning from ptrace is a bit tricky because the syscall return
* low level code assumes any value returned which is negative and
* is a valid errno will mean setting the condition codes to indicate
* an error return. This doesn't work, so we have this hook.
*/
static inline void pt_error_return(struct pt_regs *regs, unsigned long error)
{
regs->u_regs[UREG_I0] = error;
regs->psr |= PSR_C;
regs->pc = regs->npc;
regs->npc += 4;
}
static inline void pt_succ_return(struct pt_regs *regs, unsigned long value)
{
regs->u_regs[UREG_I0] = value;
regs->psr &= ~PSR_C;
regs->pc = regs->npc;
regs->npc += 4;
}
static void
pt_succ_return_linux(struct pt_regs *regs, unsigned long value, long __user *addr)
{
if (put_user(value, addr)) {
pt_error_return(regs, EFAULT);
return;
}
regs->u_regs[UREG_I0] = 0;
regs->psr &= ~PSR_C;
regs->pc = regs->npc;
regs->npc += 4;
}
static void
pt_os_succ_return (struct pt_regs *regs, unsigned long val, long __user *addr)
{
if (current->personality == PER_SUNOS)
pt_succ_return (regs, val);
else
pt_succ_return_linux (regs, val, addr);
}
/* Fuck me gently with a chainsaw... */
static inline void read_sunos_user(struct pt_regs *regs, unsigned long offset,
struct task_struct *tsk, long __user *addr)
{
struct pt_regs *cregs = tsk->thread.kregs;
struct thread_info *t = task_thread_info(tsk);
int v;
if(offset >= 1024)
offset -= 1024; /* whee... */
if(offset & ((sizeof(unsigned long) - 1))) {
pt_error_return(regs, EIO);
return;
}
if(offset >= 16 && offset < 784) {
offset -= 16; offset >>= 2;
pt_os_succ_return(regs, *(((unsigned long *)(&t->reg_window[0]))+offset), addr);
return;
}
if(offset >= 784 && offset < 832) {
offset -= 784; offset >>= 2;
pt_os_succ_return(regs, *(((unsigned long *)(&t->rwbuf_stkptrs[0]))+offset), addr);
return;
}
switch(offset) {
case 0:
v = t->ksp;
break;
case 4:
v = t->kpc;
break;
case 8:
v = t->kpsr;
break;
case 12:
v = t->uwinmask;
break;
case 832:
v = t->w_saved;
break;
case 896:
v = cregs->u_regs[UREG_I0];
break;
case 900:
v = cregs->u_regs[UREG_I1];
break;
case 904:
v = cregs->u_regs[UREG_I2];
break;
case 908:
v = cregs->u_regs[UREG_I3];
break;
case 912:
v = cregs->u_regs[UREG_I4];
break;
case 916:
v = cregs->u_regs[UREG_I5];
break;
case 920:
v = cregs->u_regs[UREG_I6];
break;
case 924:
if(tsk->thread.flags & MAGIC_CONSTANT)
v = cregs->u_regs[UREG_G1];
else
v = 0;
break;
case 940:
v = cregs->u_regs[UREG_I0];
break;
case 944:
v = cregs->u_regs[UREG_I1];
break;
case 948:
/* Isn't binary compatibility _fun_??? */
if(cregs->psr & PSR_C)
v = cregs->u_regs[UREG_I0] << 24;
else
v = 0;
break;
/* Rest of them are completely unsupported. */
default:
printk("%s [%d]: Wants to read user offset %ld\n",
current->comm, task_pid_nr(current), offset);
pt_error_return(regs, EIO);
return;
}
if (current->personality == PER_SUNOS)
pt_succ_return (regs, v);
else
pt_succ_return_linux (regs, v, addr);
return;
}
static inline void write_sunos_user(struct pt_regs *regs, unsigned long offset,
struct task_struct *tsk)
{
struct pt_regs *cregs = tsk->thread.kregs;
struct thread_info *t = task_thread_info(tsk);
unsigned long value = regs->u_regs[UREG_I3];
if(offset >= 1024)
offset -= 1024; /* whee... */
if(offset & ((sizeof(unsigned long) - 1)))
goto failure;
if(offset >= 16 && offset < 784) {
offset -= 16; offset >>= 2;
*(((unsigned long *)(&t->reg_window[0]))+offset) = value;
goto success;
}
if(offset >= 784 && offset < 832) {
offset -= 784; offset >>= 2;
*(((unsigned long *)(&t->rwbuf_stkptrs[0]))+offset) = value;
goto success;
}
switch(offset) {
case 896:
cregs->u_regs[UREG_I0] = value;
break;
case 900:
cregs->u_regs[UREG_I1] = value;
break;
case 904:
cregs->u_regs[UREG_I2] = value;
break;
case 908:
cregs->u_regs[UREG_I3] = value;
break;
case 912:
cregs->u_regs[UREG_I4] = value;
break;
case 916:
cregs->u_regs[UREG_I5] = value;
break;
case 920:
cregs->u_regs[UREG_I6] = value;
break;
case 924:
cregs->u_regs[UREG_I7] = value;
break;
case 940:
cregs->u_regs[UREG_I0] = value;
break;
case 944:
cregs->u_regs[UREG_I1] = value;
break;
/* Rest of them are completely unsupported or "no-touch". */
default:
printk("%s [%d]: Wants to write user offset %ld\n",
current->comm, task_pid_nr(current), offset);
goto failure;
}
success:
pt_succ_return(regs, 0);
return;
failure:
pt_error_return(regs, EIO);
return;
}
/* #define ALLOW_INIT_TRACING */
/*
@ -528,113 +319,42 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
return &user_sparc32_view;
}
asmlinkage void do_ptrace(struct pt_regs *regs)
long arch_ptrace(struct task_struct *child, long request, long addr, long data)
{
unsigned long request = regs->u_regs[UREG_I0];
unsigned long pid = regs->u_regs[UREG_I1];
unsigned long addr = regs->u_regs[UREG_I2];
unsigned long data = regs->u_regs[UREG_I3];
unsigned long addr2 = regs->u_regs[UREG_I4];
struct task_struct *child;
int ret;
lock_kernel();
if (request == PTRACE_TRACEME) {
ret = ptrace_traceme();
if (ret < 0)
pt_error_return(regs, -ret);
else
pt_succ_return(regs, 0);
goto out;
}
child = ptrace_get_task_struct(pid);
if (IS_ERR(child)) {
ret = PTR_ERR(child);
pt_error_return(regs, -ret);
goto out;
}
if (request == PTRACE_ATTACH) {
if (ptrace_attach(child)) {
pt_error_return(regs, EPERM);
goto out_tsk;
}
pt_succ_return(regs, 0);
goto out_tsk;
}
ret = ptrace_check_attach(child, request == PTRACE_KILL);
if (ret < 0) {
pt_error_return(regs, -ret);
goto out_tsk;
}
unsigned long addr2 = current->thread.kregs->u_regs[UREG_I4];
int i, ret;
switch(request) {
case PTRACE_PEEKTEXT: /* read word at location addr. */
case PTRACE_PEEKDATA: {
unsigned long tmp;
if (access_process_vm(child, addr,
&tmp, sizeof(tmp), 0) == sizeof(tmp))
pt_os_succ_return(regs, tmp, (long __user *)data);
else
pt_error_return(regs, EIO);
goto out_tsk;
}
case PTRACE_PEEKUSR:
read_sunos_user(regs, addr, child, (long __user *) data);
goto out_tsk;
case PTRACE_POKEUSR:
write_sunos_user(regs, addr, child);
goto out_tsk;
case PTRACE_POKETEXT: /* write the word at location addr. */
case PTRACE_POKEDATA: {
if (access_process_vm(child, addr,
&data, sizeof(data), 1) == sizeof(data))
pt_succ_return(regs, 0);
else
pt_error_return(regs, EIO);
goto out_tsk;
}
case PTRACE_GETREGS: {
struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
struct pt_regs *cregs = child->thread.kregs;
int rval;
if (!access_ok(VERIFY_WRITE, pregs, sizeof(struct pt_regs))) {
rval = -EFAULT;
pt_error_return(regs, -rval);
goto out_tsk;
}
ret = -EFAULT;
if (!access_ok(VERIFY_WRITE, pregs, sizeof(struct pt_regs)))
break;
__put_user(cregs->psr, (&pregs->psr));
__put_user(cregs->pc, (&pregs->pc));
__put_user(cregs->npc, (&pregs->npc));
__put_user(cregs->y, (&pregs->y));
for(rval = 1; rval < 16; rval++)
__put_user(cregs->u_regs[rval], (&pregs->u_regs[rval - 1]));
pt_succ_return(regs, 0);
goto out_tsk;
for (i = 1; i < 16; i++)
__put_user(cregs->u_regs[i], &pregs->u_regs[i - 1]);
ret = 0;
break;
}
case PTRACE_SETREGS: {
struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
struct pt_regs *cregs = child->thread.kregs;
unsigned long psr, pc, npc, y;
int i;
/* Must be careful, tracing process can only set certain
* bits in the psr.
*/
if (!access_ok(VERIFY_READ, pregs, sizeof(struct pt_regs))) {
pt_error_return(regs, EFAULT);
goto out_tsk;
}
ret = -EFAULT;
if (!access_ok(VERIFY_READ, pregs, sizeof(struct pt_regs)))
break;
__get_user(psr, (&pregs->psr));
__get_user(pc, (&pregs->pc));
__get_user(npc, (&pregs->npc));
@ -648,9 +368,9 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
}
cregs->y = y;
for (i = 1; i < 16; i++)
__get_user(cregs->u_regs[i], (&pregs->u_regs[i-1]));
pt_succ_return(regs, 0);
goto out_tsk;
__get_user(cregs->u_regs[i], &pregs->u_regs[i-1]);
ret = 0;
break;
}
case PTRACE_GETFPREGS: {
@ -666,15 +386,13 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
} fpq[16];
};
struct fps __user *fps = (struct fps __user *) addr;
int i;
if (!access_ok(VERIFY_WRITE, fps, sizeof(struct fps))) {
i = -EFAULT;
pt_error_return(regs, -i);
goto out_tsk;
}
ret = -EFAULT;
if (!access_ok(VERIFY_WRITE, fps, sizeof(struct fps)))
break;
for (i = 0; i < 32; i++)
__put_user(child->thread.float_regs[i], (&fps->regs[i]));
__put_user(child->thread.float_regs[i], &fps->regs[i]);
__put_user(child->thread.fsr, (&fps->fsr));
__put_user(child->thread.fpqdepth, (&fps->fpqd));
__put_user(0, (&fps->flags));
@ -682,10 +400,11 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
for (i = 0; i < 16; i++) {
__put_user(child->thread.fpqueue[i].insn_addr,
(&fps->fpq[i].insnaddr));
__put_user(child->thread.fpqueue[i].insn, (&fps->fpq[i].insn));
__put_user(child->thread.fpqueue[i].insn,
&fps->fpq[i].insn);
}
pt_succ_return(regs, 0);
goto out_tsk;
ret = 0;
break;
}
case PTRACE_SETFPREGS: {
@ -701,107 +420,53 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
} fpq[16];
};
struct fps __user *fps = (struct fps __user *) addr;
int i;
if (!access_ok(VERIFY_READ, fps, sizeof(struct fps))) {
i = -EFAULT;
pt_error_return(regs, -i);
goto out_tsk;
}
copy_from_user(&child->thread.float_regs[0], &fps->regs[0], (32 * sizeof(unsigned long)));
ret = -EFAULT;
if (!access_ok(VERIFY_READ, fps, sizeof(struct fps)))
break;
copy_from_user(&child->thread.float_regs[0], &fps->regs[0],
(32 * sizeof(unsigned long)));
__get_user(child->thread.fsr, (&fps->fsr));
__get_user(child->thread.fpqdepth, (&fps->fpqd));
for (i = 0; i < 16; i++) {
__get_user(child->thread.fpqueue[i].insn_addr,
(&fps->fpq[i].insnaddr));
__get_user(child->thread.fpqueue[i].insn, (&fps->fpq[i].insn));
__get_user(child->thread.fpqueue[i].insn,
&fps->fpq[i].insn);
}
pt_succ_return(regs, 0);
goto out_tsk;
ret = 0;
break;
}
case PTRACE_READTEXT:
case PTRACE_READDATA: {
int res = ptrace_readdata(child, addr,
case PTRACE_READDATA:
ret = ptrace_readdata(child, addr,
(void __user *) addr2, data);
if (res == data) {
pt_succ_return(regs, 0);
goto out_tsk;
}
/* Partial read is an IO failure */
if (res >= 0)
res = -EIO;
pt_error_return(regs, -res);
goto out_tsk;
}
if (ret == data)
ret = 0;
else if (ret >= 0)
ret = -EIO;
break;
case PTRACE_WRITETEXT:
case PTRACE_WRITEDATA: {
int res = ptrace_writedata(child, (void __user *) addr2,
case PTRACE_WRITEDATA:
ret = ptrace_writedata(child, (void __user *) addr2,
addr, data);
if (res == data) {
pt_succ_return(regs, 0);
goto out_tsk;
}
/* Partial write is an IO failure */
if (res >= 0)
res = -EIO;
pt_error_return(regs, -res);
goto out_tsk;
if (ret == data)
ret = 0;
else if (ret >= 0)
ret = -EIO;
break;
default:
ret = ptrace_request(child, request, addr, data);
break;
}
case PTRACE_SYSCALL: /* continue and stop at (return from) syscall */
addr = 1;
case PTRACE_CONT: { /* restart after signal. */
if (!valid_signal(data)) {
pt_error_return(regs, EIO);
goto out_tsk;
}
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;
wake_up_process(child);
pt_succ_return(regs, 0);
goto out_tsk;
}
/*
* make the child exit. 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: {
if (child->exit_state == EXIT_ZOMBIE) { /* already dead */
pt_succ_return(regs, 0);
goto out_tsk;
}
wake_up_process(child);
child->exit_code = SIGKILL;
pt_succ_return(regs, 0);
goto out_tsk;
}
default: {
int err = ptrace_request(child, request, addr, data);
if (err)
pt_error_return(regs, -err);
else
pt_succ_return(regs, 0);
goto out_tsk;
}
}
out_tsk:
if (child)
put_task_struct(child);
out:
unlock_kernel();
return ret;
}
asmlinkage void syscall_trace(void)
@ -810,7 +475,6 @@ asmlinkage void syscall_trace(void)
return;
if (!(current->ptrace & PT_PTRACED))
return;
current->thread.flags ^= MAGIC_CONSTANT;
ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
? 0x80 : 0));
/*

4
arch/sparc64/kernel/entry.S
View file

@ -1477,10 +1477,6 @@ sys32_rt_sigreturn:
add %o7, 1f-.-4, %o7
nop
#endif
sys_ptrace: add %sp, PTREGS_OFF, %o0
call do_ptrace
add %o7, 1f-.-4, %o7
nop
.align 32
1: ldx [%curptr + TI_FLAGS], %l5
andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0

407
arch/sparc64/kernel/ptrace.c
View file

@ -36,56 +36,6 @@
#include <asm/page.h>
#include <asm/cpudata.h>
/* Returning from ptrace is a bit tricky because the syscall return
* low level code assumes any value returned which is negative and
* is a valid errno will mean setting the condition codes to indicate
* an error return. This doesn't work, so we have this hook.
*/
static inline void pt_error_return(struct pt_regs *regs, unsigned long error)
{
regs->u_regs[UREG_I0] = error;
regs->tstate |= (TSTATE_ICARRY | TSTATE_XCARRY);
regs->tpc = regs->tnpc;
regs->tnpc += 4;
}
static inline void pt_succ_return(struct pt_regs *regs, unsigned long value)
{
regs->u_regs[UREG_I0] = value;
regs->tstate &= ~(TSTATE_ICARRY | TSTATE_XCARRY);
regs->tpc = regs->tnpc;
regs->tnpc += 4;
}
static inline void
pt_succ_return_linux(struct pt_regs *regs, unsigned long value, void __user *addr)
{
if (test_thread_flag(TIF_32BIT)) {
if (put_user(value, (unsigned int __user *) addr)) {
pt_error_return(regs, EFAULT);
return;
}
} else {
if (put_user(value, (long __user *) addr)) {
pt_error_return(regs, EFAULT);
return;
}
}
regs->u_regs[UREG_I0] = 0;
regs->tstate &= ~(TSTATE_ICARRY | TSTATE_XCARRY);
regs->tpc = regs->tnpc;
regs->tnpc += 4;
}
static void
pt_os_succ_return (struct pt_regs *regs, unsigned long val, void __user *addr)
{
if (current->personality == PER_SUNOS)
pt_succ_return (regs, val);
else
pt_succ_return_linux (regs, val, addr);
}
/* #define ALLOW_INIT_TRACING */
/*
@ -734,171 +684,113 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
return &user_sparc64_view;
}
asmlinkage void do_ptrace(struct pt_regs *regs)
long arch_ptrace(struct task_struct *child, long request, long addr, long data)
{
int request = regs->u_regs[UREG_I0];
pid_t pid = regs->u_regs[UREG_I1];
unsigned long addr = regs->u_regs[UREG_I2];
unsigned long data = regs->u_regs[UREG_I3];
unsigned long addr2 = regs->u_regs[UREG_I4];
struct task_struct *child;
int ret;
long addr2 = task_pt_regs(current)->u_regs[UREG_I4];
int i, ret;
if (test_thread_flag(TIF_32BIT)) {
addr &= 0xffffffffUL;
data &= 0xffffffffUL;
#if 1
printk(KERN_INFO
"arch_ptrace: request[%ld] addr[%lx] data[%lx] addr2[%lx]\n",
request, addr, data, addr2);
#endif
if (test_thread_flag(TIF_32BIT))
addr2 &= 0xffffffffUL;
}
lock_kernel();
if (request == PTRACE_TRACEME) {
ret = ptrace_traceme();
if (ret < 0)
pt_error_return(regs, -ret);
else
pt_succ_return(regs, 0);
goto out;
}
child = ptrace_get_task_struct(pid);
if (IS_ERR(child)) {
ret = PTR_ERR(child);
pt_error_return(regs, -ret);
goto out;
}
if (request == PTRACE_ATTACH) {
if (ptrace_attach(child)) {
pt_error_return(regs, EPERM);
goto out_tsk;
}
pt_succ_return(regs, 0);
goto out_tsk;
}
ret = ptrace_check_attach(child, request == PTRACE_KILL);
if (ret < 0) {
pt_error_return(regs, -ret);
goto out_tsk;
}
if (!(test_thread_flag(TIF_32BIT)) &&
((request == PTRACE_READDATA64) ||
(request == PTRACE_WRITEDATA64) ||
(request == PTRACE_READTEXT64) ||
(request == PTRACE_WRITETEXT64) ||
(request == PTRACE_PEEKTEXT64) ||
(request == PTRACE_POKETEXT64) ||
(request == PTRACE_PEEKDATA64) ||
(request == PTRACE_POKEDATA64))) {
addr = regs->u_regs[UREG_G2];
addr2 = regs->u_regs[UREG_G3];
request -= 30; /* wheee... */
}
switch(request) {
case PTRACE_PEEKUSR:
if (addr != 0)
pt_error_return(regs, EIO);
else
pt_succ_return(regs, 0);
goto out_tsk;
ret = (addr != 0) ? -EIO : 0;
break;
case PTRACE_PEEKTEXT: /* read word at location addr. */
case PTRACE_PEEKDATA: {
unsigned long tmp64;
unsigned int tmp32;
int res, copied;
int copied;
res = -EIO;
ret = -EIO;
if (test_thread_flag(TIF_32BIT)) {
copied = access_process_vm(child, addr,
&tmp32, sizeof(tmp32), 0);
tmp64 = (unsigned long) tmp32;
if (copied == sizeof(tmp32))
res = 0;
ret = put_user(tmp32,
(unsigned int __user *) data);
} else {
copied = access_process_vm(child, addr,
&tmp64, sizeof(tmp64), 0);
if (copied == sizeof(tmp64))
res = 0;
ret = put_user(tmp64,
(unsigned long __user *) data);
}
if (res < 0)
pt_error_return(regs, -res);
else
pt_os_succ_return(regs, tmp64, (void __user *) data);
goto out_tsk;
break;
}
case PTRACE_POKETEXT: /* write the word at location addr. */
case PTRACE_POKEDATA: {
unsigned long tmp64;
unsigned int tmp32;
int copied, res = -EIO;
int copied;
ret = -EIO;
if (test_thread_flag(TIF_32BIT)) {
tmp32 = data;
copied = access_process_vm(child, addr,
&tmp32, sizeof(tmp32), 1);
if (copied == sizeof(tmp32))
res = 0;
ret = 0;
} else {
tmp64 = data;
copied = access_process_vm(child, addr,
&tmp64, sizeof(tmp64), 1);
if (copied == sizeof(tmp64))
res = 0;
ret = 0;
}
if (res < 0)
pt_error_return(regs, -res);
else
pt_succ_return(regs, res);
goto out_tsk;
break;
}
case PTRACE_GETREGS: {
struct pt_regs32 __user *pregs =
(struct pt_regs32 __user *) addr;
struct pt_regs *cregs = task_pt_regs(child);
int rval;
ret = -EFAULT;
if (__put_user(tstate_to_psr(cregs->tstate), (&pregs->psr)) ||
__put_user(cregs->tpc, (&pregs->pc)) ||
__put_user(cregs->tnpc, (&pregs->npc)) ||
__put_user(cregs->y, (&pregs->y))) {
pt_error_return(regs, EFAULT);
goto out_tsk;
__put_user(cregs->y, (&pregs->y)))
break;
for (i = 1; i < 16; i++) {
if (__put_user(cregs->u_regs[i],
(&pregs->u_regs[i - 1])))
break;
}
for (rval = 1; rval < 16; rval++)
if (__put_user(cregs->u_regs[rval], (&pregs->u_regs[rval - 1]))) {
pt_error_return(regs, EFAULT);
goto out_tsk;
}
pt_succ_return(regs, 0);
goto out_tsk;
if (i == 16)
ret = 0;
break;
}
case PTRACE_GETREGS64: {
struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
struct pt_regs *cregs = task_pt_regs(child);
unsigned long tpc = cregs->tpc;
int rval;
if ((task_thread_info(child)->flags & _TIF_32BIT) != 0)
tpc &= 0xffffffff;
ret = -EFAULT;
if (__put_user(cregs->tstate, (&pregs->tstate)) ||
__put_user(tpc, (&pregs->tpc)) ||
__put_user(cregs->tnpc, (&pregs->tnpc)) ||
__put_user(cregs->y, (&pregs->y))) {
pt_error_return(regs, EFAULT);
goto out_tsk;
__put_user(cregs->y, (&pregs->y)))
break;
for (i = 1; i < 16; i++) {
if (__put_user(cregs->u_regs[i],
(&pregs->u_regs[i - 1])))
break;
}
for (rval = 1; rval < 16; rval++)
if (__put_user(cregs->u_regs[rval], (&pregs->u_regs[rval - 1]))) {
pt_error_return(regs, EFAULT);
goto out_tsk;
}
pt_succ_return(regs, 0);
goto out_tsk;
if (i == 16)
ret = 0;
break;
}
case PTRACE_SETREGS: {
@ -906,18 +798,16 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
(struct pt_regs32 __user *) addr;
struct pt_regs *cregs = task_pt_regs(child);
unsigned int psr, pc, npc, y;
int i;
/* Must be careful, tracing process can only set certain
* bits in the psr.
*/
ret = -EFAULT;
if (__get_user(psr, (&pregs->psr)) ||
__get_user(pc, (&pregs->pc)) ||
__get_user(npc, (&pregs->npc)) ||
__get_user(y, (&pregs->y))) {
pt_error_return(regs, EFAULT);
goto out_tsk;
}
__get_user(y, (&pregs->y)))
break;
cregs->tstate &= ~(TSTATE_ICC);
cregs->tstate |= psr_to_tstate_icc(psr);
if (!((pc | npc) & 3)) {
@ -926,31 +816,28 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
}
cregs->y = y;
for (i = 1; i < 16; i++) {
if (__get_user(cregs->u_regs[i], (&pregs->u_regs[i-1]))) {
pt_error_return(regs, EFAULT);
goto out_tsk;
if (__get_user(cregs->u_regs[i], (&pregs->u_regs[i-1])))
break;
}
}
pt_succ_return(regs, 0);
goto out_tsk;
if (i == 16)
ret = 0;
break;
}
case PTRACE_SETREGS64: {
struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
struct pt_regs *cregs = task_pt_regs(child);
unsigned long tstate, tpc, tnpc, y;
int i;
/* Must be careful, tracing process can only set certain
* bits in the psr.
*/
ret = -EFAULT;
if (__get_user(tstate, (&pregs->tstate)) ||
__get_user(tpc, (&pregs->tpc)) ||
__get_user(tnpc, (&pregs->tnpc)) ||
__get_user(y, (&pregs->y))) {
pt_error_return(regs, EFAULT);
goto out_tsk;
}
__get_user(y, (&pregs->y)))
break;
if ((task_thread_info(child)->flags & _TIF_32BIT) != 0) {
tpc &= 0xffffffff;
tnpc &= 0xffffffff;
@ -964,13 +851,12 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
}
cregs->y = y;
for (i = 1; i < 16; i++) {
if (__get_user(cregs->u_regs[i], (&pregs->u_regs[i-1]))) {
pt_error_return(regs, EFAULT);
goto out_tsk;
if (__get_user(cregs->u_regs[i], (&pregs->u_regs[i-1])))
break;
}
}
pt_succ_return(regs, 0);
goto out_tsk;
if (i == 16)
ret = 0;
break;
}
case PTRACE_GETFPREGS: {
@ -988,18 +874,18 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
struct fps __user *fps = (struct fps __user *) addr;
unsigned long *fpregs = task_thread_info(child)->fpregs;
ret = -EFAULT;
if (copy_to_user(&fps->regs[0], fpregs,
(32 * sizeof(unsigned int))) ||
__put_user(task_thread_info(child)->xfsr[0], (&fps->fsr)) ||
__put_user(0, (&fps->fpqd)) ||
__put_user(0, (&fps->flags)) ||
__put_user(0, (&fps->extra)) ||
clear_user(&fps->fpq[0], 32 * sizeof(unsigned int))) {
pt_error_return(regs, EFAULT);
goto out_tsk;
}
pt_succ_return(regs, 0);
goto out_tsk;
clear_user(&fps->fpq[0], 32 * sizeof(unsigned int)))
break;
ret = 0;
break;
}
case PTRACE_GETFPREGS64: {
@ -1010,14 +896,14 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
struct fps __user *fps = (struct fps __user *) addr;
unsigned long *fpregs = task_thread_info(child)->fpregs;
ret = -EFAULT;
if (copy_to_user(&fps->regs[0], fpregs,
(64 * sizeof(unsigned int))) ||
__put_user(task_thread_info(child)->xfsr[0], (&fps->fsr))) {
pt_error_return(regs, EFAULT);
goto out_tsk;
}
pt_succ_return(regs, 0);
goto out_tsk;
__put_user(task_thread_info(child)->xfsr[0], (&fps->fsr)))
break;
ret = 0;
break;
}
case PTRACE_SETFPREGS: {
@ -1036,19 +922,19 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
unsigned long *fpregs = task_thread_info(child)->fpregs;
unsigned fsr;
ret = -EFAULT;
if (copy_from_user(fpregs, &fps->regs[0],
(32 * sizeof(unsigned int))) ||
__get_user(fsr, (&fps->fsr))) {
pt_error_return(regs, EFAULT);
goto out_tsk;
}
__get_user(fsr, (&fps->fsr)))
break;
task_thread_info(child)->xfsr[0] &= 0xffffffff00000000UL;
task_thread_info(child)->xfsr[0] |= fsr;
if (!(task_thread_info(child)->fpsaved[0] & FPRS_FEF))
task_thread_info(child)->gsr[0] = 0;
task_thread_info(child)->fpsaved[0] |= (FPRS_FEF | FPRS_DL);
pt_succ_return(regs, 0);
goto out_tsk;
ret = 0;
break;
}
case PTRACE_SETFPREGS64: {
@ -1059,113 +945,56 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
struct fps __user *fps = (struct fps __user *) addr;
unsigned long *fpregs = task_thread_info(child)->fpregs;
ret = -EFAULT;
if (copy_from_user(fpregs, &fps->regs[0],
(64 * sizeof(unsigned int))) ||
__get_user(task_thread_info(child)->xfsr[0], (&fps->fsr))) {
pt_error_return(regs, EFAULT);
goto out_tsk;
}
__get_user(task_thread_info(child)->xfsr[0], (&fps->fsr)))
break;
if (!(task_thread_info(child)->fpsaved[0] & FPRS_FEF))
task_thread_info(child)->gsr[0] = 0;
task_thread_info(child)->fpsaved[0] |= (FPRS_FEF | FPRS_DL | FPRS_DU);
pt_succ_return(regs, 0);
goto out_tsk;
}
case PTRACE_READTEXT:
case PTRACE_READDATA: {
int res = ptrace_readdata(child, addr,
(char __user *)addr2, data);
if (res == data) {
pt_succ_return(regs, 0);
goto out_tsk;
}
if (res >= 0)
res = -EIO;
pt_error_return(regs, -res);
goto out_tsk;
}
case PTRACE_WRITETEXT:
case PTRACE_WRITEDATA: {
int res = ptrace_writedata(child, (char __user *) addr2,
addr, data);
if (res == data) {
pt_succ_return(regs, 0);
goto out_tsk;
}
if (res >= 0)
res = -EIO;
pt_error_return(regs, -res);
goto out_tsk;
}
case PTRACE_SYSCALL: /* continue and stop at (return from) syscall */
addr = 1;
case PTRACE_CONT: { /* restart after signal. */
if (!valid_signal(data)) {
pt_error_return(regs, EIO);
goto out_tsk;
}
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;
wake_up_process(child);
pt_succ_return(regs, 0);
goto out_tsk;
}
/*
* make the child exit. 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: {
if (child->exit_state == EXIT_ZOMBIE) { /* already dead */
pt_succ_return(regs, 0);
goto out_tsk;
}
child->exit_code = SIGKILL;
wake_up_process(child);
pt_succ_return(regs, 0);
goto out_tsk;
}
case PTRACE_GETEVENTMSG: {
int err;
if (test_thread_flag(TIF_32BIT))
err = put_user(child->ptrace_message,
(unsigned int __user *) data);
else
err = put_user(child->ptrace_message,
(unsigned long __user *) data);
if (err)
pt_error_return(regs, -err);
else
pt_succ_return(regs, 0);
task_thread_info(child)->fpsaved[0] |=
(FPRS_FEF | FPRS_DL | FPRS_DU);
ret = 0;
break;
}
default: {
int err = ptrace_request(child, request, addr, data);
if (err)
pt_error_return(regs, -err);
case PTRACE_READTEXT:
case PTRACE_READDATA:
ret = ptrace_readdata(child, addr,
(char __user *)addr2, data);
if (ret == data)
ret = 0;
else if (ret >= 0)
ret = -EIO;
break;
case PTRACE_WRITETEXT:
case PTRACE_WRITEDATA:
ret = ptrace_writedata(child, (char __user *) addr2,
addr, data);
if (ret == data)
ret = 0;
else if (ret >= 0)
ret = -EIO;
break;
case PTRACE_GETEVENTMSG: {
if (test_thread_flag(TIF_32BIT))
ret = put_user(child->ptrace_message,
(unsigned int __user *) data);
else
pt_succ_return(regs, 0);
goto out_tsk;
ret = put_user(child->ptrace_message,
(unsigned long __user *) data);
break;
}
default:
ret = ptrace_request(child, request, addr, data);
break;
}
out_tsk:
if (child)
put_task_struct(child);
out:
unlock_kernel();
return ret;
}
asmlinkage void syscall_trace(struct pt_regs *regs, int syscall_exit_p)

5
include/asm-sparc/ptrace.h
View file

@ -61,8 +61,6 @@ struct sparc_stackf {
#ifdef __KERNEL__
#define __ARCH_SYS_PTRACE 1
#define user_mode(regs) (!((regs)->psr & PSR_PS))
#define instruction_pointer(regs) ((regs)->pc)
unsigned long profile_pc(struct pt_regs *);
@ -162,7 +160,4 @@ extern void show_regs(struct pt_regs *);
#define PTRACE_GETFPAREGS 20
#define PTRACE_SETFPAREGS 21
#define PTRACE_GETUCODE 29 /* stupid bsd-ism */
#endif /* !(_SPARC_PTRACE_H) */

16
include/asm-sparc64/ptrace.h
View file

@ -95,8 +95,6 @@ struct sparc_trapf {
#ifdef __KERNEL__
#define __ARCH_SYS_PTRACE 1
#define force_successful_syscall_return() \
do { current_thread_info()->syscall_noerror = 1; \
} while (0)
@ -282,18 +280,4 @@ extern void show_regs(struct pt_regs *);
#define PTRACE_GETFPREGS64 25
#define PTRACE_SETFPREGS64 26
#define PTRACE_GETUCODE 29 /* stupid bsd-ism */
/* These are for 32-bit processes debugging 64-bit ones.
* Here addr and addr2 are passed in %g2 and %g3 respectively.
*/
#define PTRACE_PEEKTEXT64 (30 + PTRACE_PEEKTEXT)
#define PTRACE_POKETEXT64 (30 + PTRACE_POKETEXT)
#define PTRACE_PEEKDATA64 (30 + PTRACE_PEEKDATA)
#define PTRACE_POKEDATA64 (30 + PTRACE_POKEDATA)
#define PTRACE_READDATA64 (30 + PTRACE_READDATA)
#define PTRACE_WRITEDATA64 (30 + PTRACE_WRITEDATA)
#define PTRACE_READTEXT64 (30 + PTRACE_READTEXT)
#define PTRACE_WRITETEXT64 (30 + PTRACE_WRITETEXT)
#endif /* !(_SPARC64_PTRACE_H) */