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[PATCH] i386/x86-64: Consolidate arch/{i386,x86_64}/boot/compressed/misc.c

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Clean up arch/{i386,x86_64}/boot/compressed/misc.c a bit to reduce their
differences. Should have zero effect on code generation.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Carl-Daniel Hailfinger 2006-06-26 13:57:53 +02:00 committed by Linus Torvalds
parent 83f4fcce7f
commit b79c4df714
2 changed files with 35 additions and 43 deletions
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32
arch/i386/boot/compressed/misc.c
View file

@ -24,14 +24,6 @@
#undef memset
#undef memcpy
/*
* Why do we do this? Don't ask me..
*
* Incomprehensible are the ways of bootloaders.
*/
static void* memset(void *, int, size_t);
static void* memcpy(void *, __const void *, size_t);
#define memzero(s, n) memset ((s), 0, (n))
typedef unsigned char uch;
@ -93,7 +85,7 @@ static unsigned char *real_mode; /* Pointer to real-mode data */
#endif
#define RM_SCREEN_INFO (*(struct screen_info *)(real_mode+0))
extern char input_data[];
extern unsigned char input_data[];
extern int input_len;
static long bytes_out = 0;
@ -103,6 +95,9 @@ static unsigned long output_ptr = 0;
static void *malloc(int size);
static void free(void *where);
static void *memset(void *s, int c, unsigned n);
static void *memcpy(void *dest, const void *src, unsigned n);
static void putstr(const char *);
extern int end;
@ -205,7 +200,7 @@ static void putstr(const char *s)
outb_p(0xff & (pos >> 1), vidport+1);
}
static void* memset(void* s, int c, size_t n)
static void* memset(void* s, int c, unsigned n)
{
int i;
char *ss = (char*)s;
@ -214,14 +209,13 @@ static void* memset(void* s, int c, size_t n)
return s;
}
static void* memcpy(void* __dest, __const void* __src,
size_t __n)
static void* memcpy(void* dest, const void* src, unsigned n)
{
int i;
char *d = (char *)__dest, *s = (char *)__src;
char *d = (char *)dest, *s = (char *)src;
for (i=0;i<__n;i++) d[i] = s[i];
return __dest;
for (i=0;i<n;i++) d[i] = s[i];
return dest;
}
/* ===========================================================================
@ -309,7 +303,7 @@ static void setup_normal_output_buffer(void)
#else
if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < 1024) error("Less than 2MB of memory");
#endif
output_data = (char *)__PHYSICAL_START; /* Normally Points to 1M */
output_data = (unsigned char *)__PHYSICAL_START; /* Normally Points to 1M */
free_mem_end_ptr = (long)real_mode;
}
@ -324,11 +318,9 @@ static void setup_output_buffer_if_we_run_high(struct moveparams *mv)
#ifdef STANDARD_MEMORY_BIOS_CALL
if (RM_EXT_MEM_K < (3*1024)) error("Less than 4MB of memory");
#else
if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) <
(3*1024))
error("Less than 4MB of memory");
if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < (3*1024)) error("Less than 4MB of memory");
#endif
mv->low_buffer_start = output_data = (char *)LOW_BUFFER_START;
mv->low_buffer_start = output_data = (unsigned char *)LOW_BUFFER_START;
low_buffer_end = ((unsigned int)real_mode > LOW_BUFFER_MAX
? LOW_BUFFER_MAX : (unsigned int)real_mode) & ~0xfff;
low_buffer_size = low_buffer_end - LOW_BUFFER_START;

46
arch/x86_64/boot/compressed/misc.c
View file

@ -77,11 +77,11 @@ static void gzip_release(void **);
*/
static unsigned char *real_mode; /* Pointer to real-mode data */
#define EXT_MEM_K (*(unsigned short *)(real_mode + 0x2))
#define RM_EXT_MEM_K (*(unsigned short *)(real_mode + 0x2))
#ifndef STANDARD_MEMORY_BIOS_CALL
#define ALT_MEM_K (*(unsigned long *)(real_mode + 0x1e0))
#define RM_ALT_MEM_K (*(unsigned long *)(real_mode + 0x1e0))
#endif
#define SCREEN_INFO (*(struct screen_info *)(real_mode+0))
#define RM_SCREEN_INFO (*(struct screen_info *)(real_mode+0))
extern unsigned char input_data[];
extern int input_len;
@ -92,9 +92,9 @@ static unsigned long output_ptr = 0;
static void *malloc(int size);
static void free(void *where);
void* memset(void* s, int c, unsigned n);
void* memcpy(void* dest, const void* src, unsigned n);
static void *memset(void *s, int c, unsigned n);
static void *memcpy(void *dest, const void *src, unsigned n);
static void putstr(const char *);
@ -162,8 +162,8 @@ static void putstr(const char *s)
int x,y,pos;
char c;
x = SCREEN_INFO.orig_x;
y = SCREEN_INFO.orig_y;
x = RM_SCREEN_INFO.orig_x;
y = RM_SCREEN_INFO.orig_y;
while ( ( c = *s++ ) != '\0' ) {
if ( c == '\n' ) {
@ -184,8 +184,8 @@ static void putstr(const char *s)
}
}
SCREEN_INFO.orig_x = x;
SCREEN_INFO.orig_y = y;
RM_SCREEN_INFO.orig_x = x;
RM_SCREEN_INFO.orig_y = y;
pos = (x + cols * y) * 2; /* Update cursor position */
outb_p(14, vidport);
@ -194,7 +194,7 @@ static void putstr(const char *s)
outb_p(0xff & (pos >> 1), vidport+1);
}
void* memset(void* s, int c, unsigned n)
static void* memset(void* s, int c, unsigned n)
{
int i;
char *ss = (char*)s;
@ -203,7 +203,7 @@ void* memset(void* s, int c, unsigned n)
return s;
}
void* memcpy(void* dest, const void* src, unsigned n)
static void* memcpy(void* dest, const void* src, unsigned n)
{
int i;
char *d = (char *)dest, *s = (char *)src;
@ -278,15 +278,15 @@ static void error(char *x)
putstr(x);
putstr("\n\n -- System halted");
while(1);
while(1); /* Halt */
}
void setup_normal_output_buffer(void)
static void setup_normal_output_buffer(void)
{
#ifdef STANDARD_MEMORY_BIOS_CALL
if (EXT_MEM_K < 1024) error("Less than 2MB of memory");
if (RM_EXT_MEM_K < 1024) error("Less than 2MB of memory");
#else
if ((ALT_MEM_K > EXT_MEM_K ? ALT_MEM_K : EXT_MEM_K) < 1024) error("Less than 2MB of memory");
if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < 1024) error("Less than 2MB of memory");
#endif
output_data = (unsigned char *)__PHYSICAL_START; /* Normally Points to 1M */
free_mem_end_ptr = (long)real_mode;
@ -297,13 +297,13 @@ struct moveparams {
uch *high_buffer_start; int hcount;
};
void setup_output_buffer_if_we_run_high(struct moveparams *mv)
static void setup_output_buffer_if_we_run_high(struct moveparams *mv)
{
high_buffer_start = (uch *)(((ulg)&end) + HEAP_SIZE);
#ifdef STANDARD_MEMORY_BIOS_CALL
if (EXT_MEM_K < (3*1024)) error("Less than 4MB of memory");
if (RM_EXT_MEM_K < (3*1024)) error("Less than 4MB of memory");
#else
if ((ALT_MEM_K > EXT_MEM_K ? ALT_MEM_K : EXT_MEM_K) < (3*1024)) error("Less than 4MB of memory");
if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < (3*1024)) error("Less than 4MB of memory");
#endif
mv->low_buffer_start = output_data = (unsigned char *)LOW_BUFFER_START;
low_buffer_end = ((unsigned int)real_mode > LOW_BUFFER_MAX
@ -319,7 +319,7 @@ void setup_output_buffer_if_we_run_high(struct moveparams *mv)
mv->high_buffer_start = high_buffer_start;
}
void close_output_buffer_if_we_run_high(struct moveparams *mv)
static void close_output_buffer_if_we_run_high(struct moveparams *mv)
{
if (bytes_out > low_buffer_size) {
mv->lcount = low_buffer_size;
@ -335,7 +335,7 @@ int decompress_kernel(struct moveparams *mv, void *rmode)
{
real_mode = rmode;
if (SCREEN_INFO.orig_video_mode == 7) {
if (RM_SCREEN_INFO.orig_video_mode == 7) {
vidmem = (char *) 0xb0000;
vidport = 0x3b4;
} else {
@ -343,8 +343,8 @@ int decompress_kernel(struct moveparams *mv, void *rmode)
vidport = 0x3d4;
}
lines = SCREEN_INFO.orig_video_lines;
cols = SCREEN_INFO.orig_video_cols;
lines = RM_SCREEN_INFO.orig_video_lines;
cols = RM_SCREEN_INFO.orig_video_cols;
if (free_mem_ptr < 0x100000) setup_normal_output_buffer();
else setup_output_buffer_if_we_run_high(mv);