/*
* Copyright 2003 PathScale, Inc.
*
* Licensed under the GPL
*/
#include "linux/sched.h"
#include "linux/errno.h"
#include "asm/system.h"
#include "asm/pda.h"
#include "sysdep/ptrace.h"
#include "os.h"
void arch_init_thread(void)
{
}
void arch_check_bugs(void)
{
}
int arch_handle_signal(int sig, union uml_pt_regs *regs)
{
return(0);
}
#define MAXTOKEN 64
/* Set during early boot */
int host_has_cmov = 1;
int host_has_xmm = 0;
static char token(int fd, char *buf, int len, char stop)
{
int n;
char *ptr, *end, c;
ptr = buf;
end = &buf[len];
do {
n = os_read_file(fd, ptr, sizeof(*ptr));
c = *ptr++;
if(n != sizeof(*ptr)){
if(n == 0) return(0);
printk("Reading /proc/cpuinfo failed, err = %d\n", -n);
if(n < 0)
return(n);
else
return(-EIO);
}
} while((c != '\n') && (c != stop) && (ptr < end));
if(ptr == end){
printk("Failed to find '%c' in /proc/cpuinfo\n", stop);
return(-1);
}
*(ptr - 1) = '\0';
return(c);
}
static int find_cpuinfo_line(int fd, char *key, char *scratch, int len)
{
int n;
char c;
scratch[len - 1] = '\0';
while(1){
c = token(fd, scratch, len - 1, ':');
if(c <= 0)
return(0);
else if(c != ':'){
printk("Failed to find ':' in /proc/cpuinfo\n");
return(0);
}
if(!strncmp(scratch, key, strlen(key)))
return(1);
do {
n = os_read_file(fd, &c, sizeof(c));
if(n != sizeof(c)){
printk("Failed to find newline in "
"/proc/cpuinfo, err = %d\n", -n);
return(0);
}
} while(c != '\n');
}
return(0);
}
int cpu_feature(char *what, char *buf, int len)
{
int fd, ret = 0;
fd = os_open_file("/proc/cpuinfo", of_read(OPENFLAGS()), 0);
if(fd < 0){
printk("Couldn't open /proc/cpuinfo, err = %d\n", -fd);
return(0);
}
if(!find_cpuinfo_line(fd, what, buf, len)){
printk("Couldn't find '%s' line in /proc/cpuinfo\n", what);
goto out_close;
}
token(fd, buf, len, '\n');
ret = 1;
out_close:
os_close_file(fd);
return(ret);
}
/* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
