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Add -DDEBUG for debug. Can be debuged on other (faster) platforms.

This commit is contained in:
minoura 1999-06-28 08:48:35 +00:00
parent 427639cdce
commit b6f7807a25
1 changed files with 72 additions and 11 deletions
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83
usr.sbin/memswitch/memswitch.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: memswitch.c,v 1.2 1999/06/25 14:27:55 minoura Exp $ */
/* $NetBSD: memswitch.c,v 1.3 1999/06/28 08:48:35 minoura Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
@ -44,10 +44,19 @@
#include <err.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
#ifndef DEBUG
#include <machine/sram.h>
#else
/*
* DEBUG -- works on other (faster) platforms;
* store in a regular file instead of actual non-volatile static RAM.
*/
#define PATH_RAMFILE "/tmp/sramfile"
#endif
#include "memswitch.h"
@ -55,6 +64,7 @@ char *progname;
int nflag = 0;
u_int8_t *current_values = 0;
u_int8_t *modified_values = 0;
int main __P((int, char*[]));
void
@ -295,6 +305,7 @@ alloc_modified_values(void)
void
alloc_current_values(void)
{
#ifndef DEBUG
int i;
int sramfd = 0;
struct sram_io buffer;
@ -316,6 +327,48 @@ alloc_current_values(void)
}
close (sramfd);
#else
int i;
int fd;
struct stat st;
current_values = malloc (256);
if (current_values == 0)
err (1, "malloc");
fd = open (PATH_RAMFILE, O_RDONLY);
if (fd < 0 && errno == ENOENT) {
modified_values = malloc (256);
if (modified_values == 0)
err (1, NULL);
for (i = 0; i < number_of_props; i++) {
properties[i].modified_value
= properties[i].default_value;
properties[i].modified = 1;
properties[i].flush (&properties[i]);
}
fd = creat (PATH_RAMFILE, 0666);
if (fd < 0)
err (1, "Creating %s", PATH_RAMFILE);
if (write (fd, modified_values, 256) != 256)
err (1, "Writing %s", PATH_RAMFILE);
close (fd);
free (modified_values);
modified_values = 0;
fd = open (PATH_RAMFILE, O_RDONLY);
}
if (fd < 0)
err (1, "Opening %s", PATH_RAMFILE);
if (fstat (fd, &st) < 0)
err (1, "fstat");
if (st.st_size != 256)
errx (1, "PANIC! INVALID RAMFILE");
if (read (fd, current_values, 256) != 256)
err (1, "reading %s", PATH_RAMFILE);
close (fd);
#endif
properties[PROP_MAGIC1].fill (&properties[PROP_MAGIC1]);
properties[PROP_MAGIC2].fill (&properties[PROP_MAGIC2]);
@ -329,7 +382,9 @@ flush(void)
{
int i;
int sramfd = 0;
#ifndef DEBUG
struct sram_io buffer;
#endif
for (i = 0; i < number_of_props; i++) {
if (properties[i].modified)
@ -340,6 +395,7 @@ flush(void)
/* Not modified at all. */
return;
#ifndef DEBUG
/* Assume SRAM_IO_SIZE = n * 16. */
for (i = 0; i < 256; i += SRAM_IO_SIZE) {
if (memcmp (&current_values[i], &modified_values[i],
@ -353,14 +409,16 @@ flush(void)
}
buffer.offset = i;
memcpy (buffer.sram, &modified_values[i], SRAM_IO_SIZE);
#if 0 /* debug */
printf ("Issuing ioctl(%d, SIOPSRAM, {%d, ...}\n",
sramfd, buffer.offset);
#else
if (ioctl (sramfd, SIOPSRAM, &buffer) < 0)
err (1, "ioctl");
#endif
}
#else
sramfd = open (PATH_RAMFILE, O_WRONLY);
if (sramfd < 0)
err (1, "Opening %s", PATH_RAMFILE);
if (write (sramfd, modified_values, 256) != 256)
err (1, "Writing %s", PATH_RAMFILE);
#endif
if (sramfd != 0)
close (sramfd);
@ -372,6 +430,7 @@ int
save(name)
const char *name;
{
#ifndef DEBUG
int fd;
alloc_current_values ();
@ -389,6 +448,9 @@ save(name)
if (fd != 1)
close (fd);
#else
fprintf (stderr, "Skipping save...\n");
#endif
return 0;
}
@ -397,6 +459,7 @@ int
restore (name)
const char *name;
{
#ifndef DEBUG
int sramfd, fd, i;
struct sram_io buffer;
@ -420,16 +483,14 @@ restore (name)
for (i = 0; i < 256; i += SRAM_IO_SIZE) {
buffer.offset = i;
memcpy (buffer.sram, &modified_values[i], SRAM_IO_SIZE);
#if 0 /* debug */
printf ("Issuing ioctl(%d, SIOPSRAM, {%d, ...}\n",
sramfd, buffer.offset);
#else
if (ioctl (sramfd, SIOPSRAM, &buffer) < 0)
err (1, "ioctl");
#endif
}
close (sramfd);
#else
fprintf (stderr, "Skipping restore...\n");
#endif
return 0;
}