Aren/haiku
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

moved atomic user functions to SH4 atomic.c

Browse Source 
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4336 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
beveloper 2003-08-20 02:21:57 +00:00
parent 6f54d569e9
commit 67fd74cd28
1 changed files with 1 additions and 144 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

145
src/kernel/core/cpu.c
View File

@ -1,4 +1,4 @@
/* This file contains the atomic_* and cpu functions (init, etc). */
/* This file contains the cpu functions (init, etc). */
/*
** Copyright 2002, Travis Geiselbrecht. All rights reserved.
@ -15,7 +15,6 @@
#include <vm.h>
#include <arch/cpu.h>
#include <boot/stage2.h>
#include <atomic.h>
#include <string.h>
@ -42,145 +41,3 @@ cpu_preboot_init(kernel_args *ka)
{
return arch_cpu_preboot_init(ka);
}
int32
user_atomic_add(vint32 *uval, int32 incr)
{
int32 val;
int32 ret;
if ((addr)uval >= KERNEL_BASE && (addr)uval <= KERNEL_TOP)
goto error;
if (user_memcpy(&val, (int32 *)uval, sizeof(val)) < 0)
goto error;
// XXX broken on non SH4-systems, or when interrupts are enabled
// XXX x86 must use the assembly functions directly in userspace and not this ones
ret = val;
val += incr;
if (user_memcpy((int32 *)uval, &val, sizeof(val)) < 0)
goto error;
return ret;
error:
// XXX kill the app
return -1;
}
int32
user_atomic_and(vint32 *uval, int32 incr)
{
int val;
int ret;
if ((addr)uval >= KERNEL_BASE && (addr)uval <= KERNEL_TOP)
goto error;
if (user_memcpy(&val, (int32 *)uval, sizeof(val)) < 0)
goto error;
// XXX broken on non SH4-systems, or when interrupts are enabled
// XXX x86 must use the assembly functions directly in userspace and not this ones
ret = val;
val &= incr;
if (user_memcpy((int32 *)uval, &val, sizeof(val)) < 0)
goto error;
return ret;
error:
// XXX kill the app
return -1;
}
int32
user_atomic_or(vint32 *uval, int32 incr)
{
int val;
int ret;
if ((addr)uval >= KERNEL_BASE && (addr)uval <= KERNEL_TOP)
goto error;
if (user_memcpy(&val, (int32 *)uval, sizeof(val)) < 0)
goto error;
// XXX broken on non SH4-systems, or when interrupts are enabled
// XXX x86 must use the assembly functions directly in userspace and not this ones
ret = val;
val |= incr;
if (user_memcpy((int32 *)uval, &val, sizeof(val)) < 0)
goto error;
return ret;
error:
// XXX kill the app
return -1;
}
int32
user_atomic_set(vint32 *uval, int32 set_to)
{
int val;
int ret;
if ((addr)uval >= KERNEL_BASE && (addr)uval <= KERNEL_TOP)
goto error;
if (user_memcpy(&val, (int32 *)uval, sizeof(val)) < 0)
goto error;
// XXX broken on non SH4-systems, or when interrupts are enabled
// XXX x86 must use the assembly functions directly in userspace and not this ones
ret = val;
val = set_to;
if (user_memcpy((int32 *)uval, &val, sizeof(val)) < 0)
goto error;
return ret;
error:
// XXX kill the app
return -1;
}
int32
user_test_and_set(vint32 *uval, int32 set_to, int32 test_val)
{
int val;
int ret;
if ((addr)uval >= KERNEL_BASE && (addr)uval <= KERNEL_TOP)
goto error;
if (user_memcpy(&val, (int32 *)uval, sizeof(val)) < 0)
goto error;
// XXX broken on non SH4-systems, or when interrupts are enabled
// XXX x86 must use the assembly functions directly in userspace and not this ones
ret = val;
if (val == test_val) {
val = set_to;
if (user_memcpy((int32 *)uval, &val, sizeof(val)) < 0)
goto error;
}
return ret;
error:
// XXX kill the app
return -1;
}