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no longer use get_errno for do_modify_ldt() 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3590 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2007-11-11 14:57:14 +00:00
parent cd04168106
commit 03acab6618
1 changed files with 17 additions and 16 deletions
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33
linux-user/syscall.c
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@ -2229,7 +2229,7 @@ static bitmask_transtbl fcntl_flags_tbl[] = {
/* NOTE: there is really one LDT for all the threads */
uint8_t *ldt_table;
static int read_ldt(abi_ulong ptr, unsigned long bytecount)
static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount)
{
int size;
void *p;
@ -2241,7 +2241,7 @@ static int read_ldt(abi_ulong ptr, unsigned long bytecount)
size = bytecount;
p = lock_user(VERIFY_WRITE, ptr, size, 0);
if (!p)
return -EFAULT;
return -TARGET_EFAULT;
/* ??? Should this by byteswapped? */
memcpy(p, ldt_table, size);
unlock_user(p, ptr, size);
@ -2249,9 +2249,8 @@ static int read_ldt(abi_ulong ptr, unsigned long bytecount)
}
/* XXX: add locking support */
/* write_ldt() returns host errnos */
static int write_ldt(CPUX86State *env,
abi_ulong ptr, unsigned long bytecount, int oldmode)
static abi_long write_ldt(CPUX86State *env,
abi_ulong ptr, unsigned long bytecount, int oldmode)
{
struct target_modify_ldt_ldt_s ldt_info;
struct target_modify_ldt_ldt_s *target_ldt_info;
@ -2260,9 +2259,9 @@ static int write_ldt(CPUX86State *env,
uint32_t *lp, entry_1, entry_2;
if (bytecount != sizeof(ldt_info))
return -EINVAL;
return -TARGET_EINVAL;
if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1))
return -EFAULT;
return -TARGET_EFAULT;
ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
ldt_info.base_addr = tswapl(target_ldt_info->base_addr);
ldt_info.limit = tswap32(target_ldt_info->limit);
@ -2270,7 +2269,7 @@ static int write_ldt(CPUX86State *env,
unlock_user_struct(target_ldt_info, ptr, 0);
if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
return -EINVAL;
return -TARGET_EINVAL;
seg_32bit = ldt_info.flags & 1;
contents = (ldt_info.flags >> 1) & 3;
read_exec_only = (ldt_info.flags >> 3) & 1;
@ -2280,15 +2279,15 @@ static int write_ldt(CPUX86State *env,
if (contents == 3) {
if (oldmode)
return -EINVAL;
return -TARGET_EINVAL;
if (seg_not_present == 0)
return -EINVAL;
return -TARGET_EINVAL;
}
/* allocate the LDT */
if (!ldt_table) {
ldt_table = malloc(TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
if (!ldt_table)
return -ENOMEM;
return -TARGET_ENOMEM;
memset(ldt_table, 0, TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
env->ldt.base = h2g(ldt_table);
env->ldt.limit = 0xffff;
@ -2333,11 +2332,10 @@ install:
}
/* specific and weird i386 syscalls */
/* do_modify_ldt() returns host errnos (it is inconsistent with the
other do_*() functions which return target errnos). */
int do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr, unsigned long bytecount)
abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr,
unsigned long bytecount)
{
int ret = -ENOSYS;
abi_long ret;
switch (func) {
case 0:
@ -2349,6 +2347,9 @@ int do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr, unsigned long bytec
case 0x11:
ret = write_ldt(env, ptr, bytecount, 0);
break;
default:
ret = -TARGET_ENOSYS;
break;
}
return ret;
}
@ -4174,7 +4175,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
break;
#ifdef TARGET_I386
case TARGET_NR_modify_ldt:
ret = get_errno(do_modify_ldt(cpu_env, arg1, arg2, arg3));
ret = do_modify_ldt(cpu_env, arg1, arg2, arg3);
break;
#if !defined(TARGET_X86_64)
case TARGET_NR_vm86old: