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Diffstat (limited to 'arch/um/os-Linux/skas/mem.c')
-rw-r--r--arch/um/os-Linux/skas/mem.c109
1 files changed, 52 insertions, 57 deletions
diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c
index 0f7df4eb903..484e68f9f7a 100644
--- a/arch/um/os-Linux/skas/mem.c
+++ b/arch/um/os-Linux/skas/mem.c
@@ -1,31 +1,26 @@
/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
-#include <signal.h>
+#include <stddef.h>
+#include <unistd.h>
#include <errno.h>
#include <string.h>
-#include <unistd.h>
#include <sys/mman.h>
-#include <sys/wait.h>
-#include <asm/page.h>
-#include <asm/unistd.h>
-#include "mem_user.h"
-#include "mem.h"
-#include "skas.h"
-#include "user.h"
+#include "init.h"
+#include "kern_constants.h"
+#include "as-layout.h"
+#include "mm_id.h"
#include "os.h"
#include "proc_mm.h"
#include "ptrace_user.h"
-#include "kern_util.h"
-#include "task.h"
#include "registers.h"
-#include "uml-config.h"
+#include "skas.h"
+#include "user.h"
#include "sysdep/ptrace.h"
#include "sysdep/stub.h"
-#include "init.h"
-#include "kern_constants.h"
+#include "uml-config.h"
extern unsigned long batch_syscall_stub, __syscall_stub_start;
@@ -34,7 +29,7 @@ extern void wait_stub_done(int pid);
static inline unsigned long *check_init_stack(struct mm_id * mm_idp,
unsigned long *stack)
{
- if(stack == NULL) {
+ if (stack == NULL) {
stack = (unsigned long *) mm_idp->stack + 2;
*stack = 0;
}
@@ -45,8 +40,8 @@ static unsigned long syscall_regs[MAX_REG_NR];
static int __init init_syscall_regs(void)
{
- get_safe_registers(syscall_regs, NULL);
- syscall_regs[REGS_IP_INDEX] = UML_CONFIG_STUB_CODE +
+ get_safe_registers(syscall_regs);
+ syscall_regs[REGS_IP_INDEX] = STUB_CODE +
((unsigned long) &batch_syscall_stub -
(unsigned long) &__syscall_stub_start);
return 0;
@@ -68,29 +63,30 @@ static inline long do_syscall_stub(struct mm_id * mm_idp, void **addr)
unsigned long * syscall;
int err, pid = mm_idp->u.pid;
- if(proc_mm)
+ if (proc_mm)
/* FIXME: Need to look up userspace_pid by cpu */
pid = userspace_pid[0];
multi_count++;
n = ptrace_setregs(pid, syscall_regs);
- if(n < 0){
- printk("Registers - \n");
- for(i = 0; i < MAX_REG_NR; i++)
- printk("\t%d\t0x%lx\n", i, syscall_regs[i]);
+ if (n < 0) {
+ printk(UM_KERN_ERR "Registers - \n");
+ for (i = 0; i < MAX_REG_NR; i++)
+ printk(UM_KERN_ERR "\t%d\t0x%lx\n", i, syscall_regs[i]);
panic("do_syscall_stub : PTRACE_SETREGS failed, errno = %d\n",
-n);
}
err = ptrace(PTRACE_CONT, pid, 0, 0);
- if(err)
+ if (err)
panic("Failed to continue stub, pid = %d, errno = %d\n", pid,
errno);
wait_stub_done(pid);
- /* When the stub stops, we find the following values on the
+ /*
+ * When the stub stops, we find the following values on the
* beginning of the stack:
* (long )return_value
* (long )offset to failed sycall-data (0, if no error)
@@ -98,26 +94,26 @@ static inline long do_syscall_stub(struct mm_id * mm_idp, void **addr)
ret = *((unsigned long *) mm_idp->stack);
offset = *((unsigned long *) mm_idp->stack + 1);
if (offset) {
- data = (unsigned long *)(mm_idp->stack +
- offset - UML_CONFIG_STUB_DATA);
- printk("do_syscall_stub : ret = %ld, offset = %ld, "
+ data = (unsigned long *)(mm_idp->stack + offset - STUB_DATA);
+ printk(UM_KERN_ERR "do_syscall_stub : ret = %ld, offset = %ld, "
"data = %p\n", ret, offset, data);
syscall = (unsigned long *)((unsigned long)data + data[0]);
- printk("do_syscall_stub: syscall %ld failed, return value = "
- "0x%lx, expected return value = 0x%lx\n",
+ printk(UM_KERN_ERR "do_syscall_stub: syscall %ld failed, "
+ "return value = 0x%lx, expected return value = 0x%lx\n",
syscall[0], ret, syscall[7]);
- printk(" syscall parameters: "
+ printk(UM_KERN_ERR " syscall parameters: "
"0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx\n",
syscall[1], syscall[2], syscall[3],
syscall[4], syscall[5], syscall[6]);
- for(n = 1; n < data[0]/sizeof(long); n++) {
- if(n == 1)
- printk(" additional syscall data:");
- if(n % 4 == 1)
- printk("\n ");
+ for (n = 1; n < data[0]/sizeof(long); n++) {
+ if (n == 1)
+ printk(UM_KERN_ERR " additional syscall "
+ "data:");
+ if (n % 4 == 1)
+ printk("\n" UM_KERN_ERR " ");
printk(" 0x%lx", data[n]);
}
- if(n > 1)
+ if (n > 1)
printk("\n");
}
else ret = 0;
@@ -133,7 +129,7 @@ long run_syscall_stub(struct mm_id * mm_idp, int syscall,
{
unsigned long *stack = check_init_stack(mm_idp, *addr);
- if(done && *addr == NULL)
+ if (done && *addr == NULL)
single_count++;
*stack += sizeof(long);
@@ -150,8 +146,8 @@ long run_syscall_stub(struct mm_id * mm_idp, int syscall,
*stack = 0;
multi_op_count++;
- if(!done && ((((unsigned long) stack) & ~UM_KERN_PAGE_MASK) <
- UM_KERN_PAGE_SIZE - 10 * sizeof(long))){
+ if (!done && ((((unsigned long) stack) & ~UM_KERN_PAGE_MASK) <
+ UM_KERN_PAGE_SIZE - 10 * sizeof(long))) {
*addr = stack;
return 0;
}
@@ -166,14 +162,15 @@ long syscall_stub_data(struct mm_id * mm_idp,
unsigned long *stack;
int ret = 0;
- /* If *addr still is uninitialized, it *must* contain NULL.
+ /*
+ * If *addr still is uninitialized, it *must* contain NULL.
* Thus in this case do_syscall_stub correctly won't be called.
*/
- if((((unsigned long) *addr) & ~UM_KERN_PAGE_MASK) >=
+ if ((((unsigned long) *addr) & ~UM_KERN_PAGE_MASK) >=
UM_KERN_PAGE_SIZE - (10 + data_count) * sizeof(long)) {
ret = do_syscall_stub(mm_idp, addr);
/* in case of error, don't overwrite data on stack */
- if(ret)
+ if (ret)
return ret;
}
@@ -185,7 +182,7 @@ long syscall_stub_data(struct mm_id * mm_idp,
memcpy(stack + 1, data, data_count * sizeof(long));
*stub_addr = (void *)(((unsigned long)(stack + 1) &
- ~UM_KERN_PAGE_MASK) + UML_CONFIG_STUB_DATA);
+ ~UM_KERN_PAGE_MASK) + STUB_DATA);
return 0;
}
@@ -195,7 +192,7 @@ int map(struct mm_id * mm_idp, unsigned long virt, unsigned long len, int prot,
{
int ret;
- if(proc_mm){
+ if (proc_mm) {
struct proc_mm_op map;
int fd = mm_idp->u.mm_fd;
@@ -211,9 +208,10 @@ int map(struct mm_id * mm_idp, unsigned long virt, unsigned long len, int prot,
.offset= offset
} } } );
CATCH_EINTR(ret = write(fd, &map, sizeof(map)));
- if(ret != sizeof(map)){
+ if (ret != sizeof(map)) {
ret = -errno;
- printk("map : /proc/mm map failed, err = %d\n", -ret);
+ printk(UM_KERN_ERR "map : /proc/mm map failed, "
+ "err = %d\n", -ret);
}
else ret = 0;
}
@@ -234,7 +232,7 @@ int unmap(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
{
int ret;
- if(proc_mm){
+ if (proc_mm) {
struct proc_mm_op unmap;
int fd = mm_idp->u.mm_fd;
@@ -245,9 +243,10 @@ int unmap(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
(unsigned long) addr,
.len = len } } } );
CATCH_EINTR(ret = write(fd, &unmap, sizeof(unmap)));
- if(ret != sizeof(unmap)){
+ if (ret != sizeof(unmap)) {
ret = -errno;
- printk("unmap - proc_mm write returned %d\n", ret);
+ printk(UM_KERN_ERR "unmap - proc_mm write returned "
+ "%d\n", ret);
}
else ret = 0;
}
@@ -268,7 +267,7 @@ int protect(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
struct proc_mm_op protect;
int ret;
- if(proc_mm){
+ if (proc_mm) {
int fd = mm_idp->u.mm_fd;
protect = ((struct proc_mm_op) { .op = MM_MPROTECT,
@@ -280,9 +279,9 @@ int protect(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
.prot = prot } } } );
CATCH_EINTR(ret = write(fd, &protect, sizeof(protect)));
- if(ret != sizeof(protect)){
+ if (ret != sizeof(protect)) {
ret = -errno;
- printk("protect failed, err = %d", -ret);
+ printk(UM_KERN_ERR "protect failed, err = %d", -ret);
}
else ret = 0;
}
@@ -295,7 +294,3 @@ int protect(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
return ret;
}
-
-void before_mem_skas(unsigned long unused)
-{
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-11 19:56:12 +0000