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[PARISC] Add is_compat_task() helper

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... And convert signal.c and ptrace.c to use it instead of open
coded equivalents.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
This commit is contained in:
Kyle McMartin 2006-06-16 19:10:02 +00:00 committed by Kyle McMartin
parent d71624c95a
commit a3ea84faba
3 changed files with 25 additions and 14 deletions
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8
arch/parisc/kernel/ptrace.c
View File

@ -91,7 +91,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
int copied;
#ifdef __LP64__
if (personality(child->personality) == PER_LINUX32) {
if (__is_compat_task(child)) {
unsigned int tmp;
addr &= 0xffffffffL;
@ -123,7 +123,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
case PTRACE_POKEDATA:
ret = 0;
#ifdef __LP64__
if (personality(child->personality) == PER_LINUX32) {
if (__is_compat_task(child)) {
unsigned int tmp = (unsigned int)data;
DBG("sys_ptrace(POKE%s, %d, %lx, %lx)\n",
request == PTRACE_POKETEXT ? "TEXT" : "DATA",
@ -146,7 +146,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
case PTRACE_PEEKUSR: {
ret = -EIO;
#ifdef __LP64__
if (personality(child->personality) == PER_LINUX32) {
if (__is_compat_task(child)) {
unsigned int tmp;
if (addr & (sizeof(int)-1))
@ -205,7 +205,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
goto out_tsk;
}
#ifdef __LP64__
if (personality(child->personality) == PER_LINUX32) {
if (__is_compat_task(child)) {
if (addr & (sizeof(int)-1))
goto out_tsk;
if ((addr = translate_usr_offset(addr)) < 0)

20
arch/parisc/kernel/signal.c
View File

@ -76,7 +76,7 @@ sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize, struct pt_regs *r
#ifdef __LP64__
compat_sigset_t newset32;
if(personality(current->personality) == PER_LINUX32){
if (is_compat_task()) {
/* XXX: Don't preclude handling different sized sigset_t's. */
if (sigsetsize != sizeof(compat_sigset_t))
return -EINVAL;
@ -153,7 +153,7 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
compat_sigset_t compat_set;
struct compat_rt_sigframe __user * compat_frame;
if(personality(current->personality) == PER_LINUX32)
if (is_compat_task())
sigframe_size = PARISC_RT_SIGFRAME_SIZE32;
#endif
@ -166,7 +166,7 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
#ifdef __LP64__
compat_frame = (struct compat_rt_sigframe __user *)frame;
if(personality(current->personality) == PER_LINUX32){
if (is_compat_task()) {
DBG(2,"sys_rt_sigreturn: ELF32 process.\n");
if (__copy_from_user(&compat_set, &compat_frame->uc.uc_sigmask, sizeof(compat_set)))
goto give_sigsegv;
@ -186,7 +186,7 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
/* Good thing we saved the old gr[30], eh? */
#ifdef __LP64__
if(personality(current->personality) == PER_LINUX32){
if (is_compat_task()) {
DBG(1,"sys_rt_sigreturn: compat_frame->uc.uc_mcontext 0x%p\n",
&compat_frame->uc.uc_mcontext);
// FIXME: Load upper half from register file
@ -315,7 +315,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
compat_frame = (struct compat_rt_sigframe __user *)frame;
if(personality(current->personality) == PER_LINUX32) {
if (is_compat_task()) {
DBG(1,"setup_rt_frame: frame->info = 0x%p\n", &compat_frame->info);
err |= copy_siginfo_to_user32(&compat_frame->info, info);
DBG(1,"SETUP_RT_FRAME: 1\n");
@ -392,7 +392,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
haddr = A(ka->sa.sa_handler);
/* The sa_handler may be a pointer to a function descriptor */
#ifdef __LP64__
if(personality(current->personality) == PER_LINUX32) {
if (is_compat_task()) {
#endif
if (haddr & PA_PLABEL_FDESC) {
Elf32_Fdesc fdesc;
@ -427,19 +427,19 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
*/
sigframe_size = PARISC_RT_SIGFRAME_SIZE;
#ifdef __LP64__
if(personality(current->personality) == PER_LINUX32)
if (is_compat_task())
sigframe_size = PARISC_RT_SIGFRAME_SIZE32;
#endif
if (in_syscall) {
regs->gr[31] = haddr;
#ifdef __LP64__
if(personality(current->personality) == PER_LINUX)
if (personality(current->personality) == PER_LINUX)
sigframe_size |= 1;
#endif
} else {
unsigned long psw = USER_PSW;
#ifdef __LP64__
if(personality(current->personality) == PER_LINUX)
if (personality(current->personality) == PER_LINUX)
psw |= PSW_W;
#endif
@ -464,7 +464,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
regs->gr[26] = sig; /* signal number */
#ifdef __LP64__
if(personality(current->personality) == PER_LINUX32){
if (is_compat_task()) {
regs->gr[25] = A(&compat_frame->info); /* siginfo pointer */
regs->gr[24] = A(&compat_frame->uc); /* ucontext pointer */
} else

11
include/asm-parisc/compat.h
View File

@ -5,6 +5,7 @@
*/
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/personality.h>
#define COMPAT_USER_HZ 100
@ -149,4 +150,14 @@ static __inline__ void __user *compat_alloc_user_space(long len)
return (void __user *)regs->gr[30];
}
static inline int __is_compat_task(struct task_struct *t)
{
return personality(t->personality) == PER_LINUX32;
}
static inline int is_compat_task(void)
{
return __is_compat_task(current);
}
#endif /* _ASM_PARISC_COMPAT_H */