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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] [XEN] Make labels _start, _end, _stext, _etext, _sinittext, _einittext generic.
# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxxx
# Date 1167868407 0
# Node ID 60f91c9f1a248491e2f216d009a27a4c7e5e67d4
# Parent bf25488db8ebbc513d7f20e12a514691e54b6436
[XEN] Make labels _start,_end,_stext,_etext,_sinittext,_einittext generic.
Also sync the tools/symbol.c symbol table generator with Linux.
Make section names generic (e.e.g, .init.text, .init.data, ...).
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
xen/arch/ia64/xen/xenmisc.c | 20 -
xen/arch/powerpc/setup.c | 13 -
xen/arch/powerpc/xen.lds.S | 4
xen/arch/x86/boot/x86_32.S | 2
xen/arch/x86/boot/x86_64.S | 2
xen/arch/x86/traps.c | 20 -
xen/arch/x86/x86_32/xen.lds.S | 17 -
xen/arch/x86/x86_64/xen.lds.S | 17 -
xen/common/kexec.c | 6
xen/common/symbols.c | 6
xen/include/asm-ia64/init.h | 25 --
xen/include/asm-powerpc/init.h | 19 -
xen/include/asm-x86/config.h | 4
xen/include/asm-x86/init.h | 25 --
xen/include/xen/init.h | 19 +
xen/include/xen/kernel.h | 17 +
xen/include/xen/symbols.h | 5
xen/tools/symbols.c | 471 ++++++++++-------------------------------
18 files changed, 193 insertions(+), 499 deletions(-)
diff -r bf25488db8eb -r 60f91c9f1a24 xen/arch/ia64/xen/xenmisc.c
--- a/xen/arch/ia64/xen/xenmisc.c Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/arch/ia64/xen/xenmisc.c Wed Jan 03 23:53:27 2007 +0000
@@ -55,26 +55,6 @@ is_platform_hp_ski(void)
}
struct pt_regs *guest_cpu_user_regs(void) { return vcpu_regs(current); }
-
-///////////////////////////////
-// from arch/ia64/traps.c
-///////////////////////////////
-
-int is_kernel_text(unsigned long addr)
-{
- extern char _stext[], _etext[];
- if (addr >= (unsigned long) _stext &&
- addr <= (unsigned long) _etext)
- return 1;
-
- return 0;
-}
-
-unsigned long kernel_text_end(void)
-{
- extern char _etext[];
- return (unsigned long) _etext;
-}
///////////////////////////////
// from common/keyhandler.c
diff -r bf25488db8eb -r 60f91c9f1a24 xen/arch/powerpc/setup.c
--- a/xen/arch/powerpc/setup.c Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/arch/powerpc/setup.c Wed Jan 03 23:53:27 2007 +0000
@@ -91,19 +91,6 @@ static struct domain *idle_domain;
volatile struct processor_area * volatile global_cpu_table[NR_CPUS];
-int is_kernel_text(unsigned long addr)
-{
- if (addr >= (unsigned long) &_start &&
- addr <= (unsigned long) &_etext)
- return 1;
- return 0;
-}
-
-unsigned long kernel_text_end(void)
-{
- return (unsigned long) &_etext;
-}
-
static void __init do_initcalls(void)
{
initcall_t *call;
diff -r bf25488db8eb -r 60f91c9f1a24 xen/arch/powerpc/xen.lds.S
--- a/xen/arch/powerpc/xen.lds.S Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/arch/powerpc/xen.lds.S Wed Jan 03 23:53:27 2007 +0000
@@ -113,10 +113,10 @@ SECTIONS
. = ALIGN(32);
__setup_start = .;
- .setup.init : { *(.setup.init) }
+ .init.setup : { *(.init.setup) }
__setup_end = .;
__initcall_start = .;
- .initcall.init : { *(.initcall.init) }
+ .initcall.init : { *(.initcall1.init) }
__initcall_end = .;
__inithcall_start = .;
.inithcall.text : { *(.inithcall.text) }
diff -r bf25488db8eb -r 60f91c9f1a24 xen/arch/x86/boot/x86_32.S
--- a/xen/arch/x86/boot/x86_32.S Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/arch/x86/boot/x86_32.S Wed Jan 03 23:53:27 2007 +0000
@@ -11,8 +11,6 @@
.text
ENTRY(start)
-ENTRY(stext)
-ENTRY(_stext)
jmp __start
.align 4
diff -r bf25488db8eb -r 60f91c9f1a24 xen/arch/x86/boot/x86_64.S
--- a/xen/arch/x86/boot/x86_64.S Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/arch/x86/boot/x86_64.S Wed Jan 03 23:53:27 2007 +0000
@@ -14,8 +14,6 @@
#define SYM_PHYS(sym) (sym - __PAGE_OFFSET)
ENTRY(start)
-ENTRY(stext)
-ENTRY(_stext)
jmp __start
.org 0x004
diff -r bf25488db8eb -r 60f91c9f1a24 xen/arch/x86/traps.c
--- a/xen/arch/x86/traps.c Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/arch/x86/traps.c Wed Jan 03 23:53:27 2007 +0000
@@ -115,22 +115,6 @@ integer_param("debug_stack_lines", debug
#define ESP_BEFORE_EXCEPTION(regs) ((unsigned long *)regs->rsp)
#endif
-int is_kernel_text(unsigned long addr)
-{
- extern char _stext, _etext;
- if (addr >= (unsigned long) &_stext &&
- addr <= (unsigned long) &_etext)
- return 1;
- return 0;
-
-}
-
-unsigned long kernel_text_end(void)
-{
- extern char _etext;
- return (unsigned long) &_etext;
-}
-
static void show_guest_stack(struct cpu_user_regs *regs)
{
int i;
@@ -187,7 +171,7 @@ static void show_trace(struct cpu_user_r
while ( ((long)stack & (STACK_SIZE-BYTES_PER_LONG)) != 0 )
{
addr = *stack++;
- if ( is_kernel_text(addr) )
+ if ( is_kernel_text(addr) || is_kernel_inittext(addr) )
{
printk("[<%p>]", _p(addr));
print_symbol(" %s\n ", addr);
@@ -316,7 +300,7 @@ void show_stack_overflow(unsigned long e
while ( ((long)stack & (STACK_SIZE-BYTES_PER_LONG)) != 0 )
{
addr = *stack++;
- if ( is_kernel_text(addr) )
+ if ( is_kernel_text(addr) || is_kernel_inittext(addr) )
{
printk("%p: [<%p>]", stack, _p(addr));
print_symbol(" %s\n ", addr);
diff -r bf25488db8eb -r 60f91c9f1a24 xen/arch/x86/x86_32/xen.lds.S
--- a/xen/arch/x86/x86_32/xen.lds.S Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/arch/x86/x86_32/xen.lds.S Wed Jan 03 23:53:27 2007 +0000
@@ -19,7 +19,8 @@ SECTIONS
SECTIONS
{
. = 0xFF000000 + 0x100000;
- _text = .; /* Text and read-only data */
+ _start = .;
+ _stext = .; /* Text and read-only data */
.text : {
*(.text)
*(.fixup)
@@ -51,14 +52,16 @@ SECTIONS
. = ALIGN(4096); /* Init code and data */
__init_begin = .;
- .text.init : { *(.text.init) } :text
- .data.init : { *(.data.init) } :text
+ _sinittext = .;
+ .init.text : { *(.init.text) } :text
+ _einittext = .;
+ .init.data : { *(.init.data) } :text
. = ALIGN(32);
__setup_start = .;
- .setup.init : { *(.setup.init) } :text
+ .init.setup : { *(.init.setup) } :text
__setup_end = .;
__initcall_start = .;
- .initcall.init : { *(.initcall.init) } :text
+ .initcall.init : { *(.initcall1.init) } :text
__initcall_end = .;
. = ALIGN(PAGE_SIZE);
__init_end = .;
@@ -80,8 +83,8 @@ SECTIONS
/* Sections to be discarded */
/DISCARD/ : {
- *(.text.exit)
- *(.data.exit)
+ *(.exit.text)
+ *(.exit.data)
*(.exitcall.exit)
}
diff -r bf25488db8eb -r 60f91c9f1a24 xen/arch/x86/x86_64/xen.lds.S
--- a/xen/arch/x86/x86_64/xen.lds.S Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/arch/x86/x86_64/xen.lds.S Wed Jan 03 23:53:27 2007 +0000
@@ -17,7 +17,8 @@ SECTIONS
SECTIONS
{
. = 0xFFFF830000100000;
- _text = .; /* Text and read-only data */
+ _start = .;
+ _stext = .; /* Text and read-only data */
.text : {
*(.text)
*(.fixup)
@@ -49,14 +50,16 @@ SECTIONS
. = ALIGN(4096); /* Init code and data */
__init_begin = .;
- .text.init : { *(.text.init) } :text
- .data.init : { *(.data.init) } :text
+ _sinittext = .;
+ .init.text : { *(.init.text) } :text
+ _einittext = .;
+ .init.data : { *(.init.data) } :text
. = ALIGN(32);
__setup_start = .;
- .setup.init : { *(.setup.init) } :text
+ .init.setup : { *(.init.setup) } :text
__setup_end = .;
__initcall_start = .;
- .initcall.init : { *(.initcall.init) } :text
+ .initcall.init : { *(.initcall1.init) } :text
__initcall_end = .;
. = ALIGN(PAGE_SIZE);
__init_end = .;
@@ -78,8 +81,8 @@ SECTIONS
/* Sections to be discarded */
/DISCARD/ : {
- *(.text.exit)
- *(.data.exit)
+ *(.exit.text)
+ *(.exit.data)
*(.exitcall.exit)
}
diff -r bf25488db8eb -r 60f91c9f1a24 xen/common/kexec.c
--- a/xen/common/kexec.c Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/common/kexec.c Wed Jan 03 23:53:27 2007 +0000
@@ -150,12 +150,10 @@ static int kexec_get_reserve(xen_kexec_r
return 0;
}
-extern unsigned long _text;
-
static int kexec_get_xen(xen_kexec_range_t *range)
{
- range->start = virt_to_maddr(&_text);
- range->size = (unsigned long)&_end - (unsigned long)&_text;
+ range->start = virt_to_maddr(_start);
+ range->size = (unsigned long)_end - (unsigned long)_start;
return 0;
}
diff -r bf25488db8eb -r 60f91c9f1a24 xen/common/symbols.c
--- a/xen/common/symbols.c Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/common/symbols.c Wed Jan 03 23:53:27 2007 +0000
@@ -12,6 +12,7 @@
#include <xen/config.h>
#include <xen/symbols.h>
+#include <xen/kernel.h>
#include <xen/init.h>
#include <xen/lib.h>
#include <xen/string.h>
@@ -99,7 +100,7 @@ const char *symbols_lookup(unsigned long
namebuf[KSYM_NAME_LEN] = 0;
namebuf[0] = 0;
- if (!is_kernel_text(addr))
+ if (!is_kernel_text(addr) && !is_kernel_inittext(addr))
return NULL;
/* do a binary search on the sorted symbols_addresses array */
@@ -130,7 +131,8 @@ const char *symbols_lookup(unsigned long
/* if we found no next symbol, we use the end of the section */
if (!symbol_end)
- symbol_end = kernel_text_end();
+ symbol_end = is_kernel_inittext(addr) ?
+ (unsigned long)_einittext : (unsigned long)_etext;
*symbolsize = symbol_end - symbols_addresses[low];
*offset = addr - symbols_addresses[low];
diff -r bf25488db8eb -r 60f91c9f1a24 xen/include/asm-ia64/init.h
--- a/xen/include/asm-ia64/init.h Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/include/asm-ia64/init.h Wed Jan 03 23:53:27 2007 +0000
@@ -1,29 +1,4 @@
#ifndef _XEN_ASM_INIT_H
#define _XEN_ASM_INIT_H
-/*
- * Mark functions and data as being only used at initialization
- * or exit time.
- */
-#define __init \
- __attribute__ ((__section__ (".init.text")))
-#define __exit \
- __attribute_used__ __attribute__ ((__section__(".text.exit")))
-#define __initdata \
- __attribute__ ((__section__ (".init.data")))
-#define __exitdata \
- __attribute_used__ __attribute__ ((__section__ (".data.exit")))
-#define __initsetup \
- __attribute_used__ __attribute__ ((__section__ (".init.setup")))
-#define __init_call \
- __attribute_used__ __attribute__ ((__section__ (".initcall1.init")))
-#define __exit_call \
- __attribute_used__ __attribute__ ((__section__ (".exitcall.exit")))
-
-/* For assembly routines
-#define __INIT .section ".text.init","ax"
-#define __FINIT .previous
-#define __INITDATA .section ".data.init","aw"
-*/
-
#endif /* _XEN_ASM_INIT_H */
diff -r bf25488db8eb -r 60f91c9f1a24 xen/include/asm-powerpc/init.h
--- a/xen/include/asm-powerpc/init.h Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/include/asm-powerpc/init.h Wed Jan 03 23:53:27 2007 +0000
@@ -21,25 +21,6 @@
#ifndef _XEN_ASM_INIT_H
#define _XEN_ASM_INIT_H
-/*
- * Mark functions and data as being only used at initialization
- * or exit time.
- */
-#define __init \
- __attribute__ ((__section__ (".init.text")))
-#define __exit \
- __attribute_used__ __attribute__ ((__section__(".text.exit")))
-#define __initdata \
- __attribute__ ((__section__ (".init.data")))
-#define __exitdata \
- __attribute_used__ __attribute__ ((__section__ (".data.exit")))
-#define __initsetup \
- __attribute_used__ __attribute__ ((__section__ (".setup.init")))
-#define __init_call \
- __attribute_used__ __attribute__ ((__section__ (".initcall.init")))
-#define __exit_call \
- __attribute_used__ __attribute__ ((__section__ (".exitcall.exit")))
-
struct cpu_user_regs;
typedef void (*hcall_handler_t)(struct cpu_user_regs *regs);
diff -r bf25488db8eb -r 60f91c9f1a24 xen/include/asm-x86/config.h
--- a/xen/include/asm-x86/config.h Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/include/asm-x86/config.h Wed Jan 03 23:53:27 2007 +0000
@@ -83,10 +83,6 @@
#define DEBUG_STACK_SIZE 8192
#define CONFIG_DMA_BITSIZE 30
-
-#ifndef __ASSEMBLY__
-extern unsigned long _end; /* standard ELF symbol */
-#endif /* __ASSEMBLY__ */
#if defined(__x86_64__)
diff -r bf25488db8eb -r 60f91c9f1a24 xen/include/asm-x86/init.h
--- a/xen/include/asm-x86/init.h Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/include/asm-x86/init.h Wed Jan 03 23:53:27 2007 +0000
@@ -1,29 +1,4 @@
#ifndef _XEN_ASM_INIT_H
#define _XEN_ASM_INIT_H
-/*
- * Mark functions and data as being only used at initialization
- * or exit time.
- */
-#define __init \
- __attribute__ ((__section__ (".init.text")))
-#define __exit \
- __attribute_used__ __attribute__ ((__section__(".text.exit")))
-#define __initdata \
- __attribute__ ((__section__ (".init.data")))
-#define __exitdata \
- __attribute_used__ __attribute__ ((__section__ (".data.exit")))
-#define __initsetup \
- __attribute_used__ __attribute__ ((__section__ (".setup.init")))
-#define __init_call \
- __attribute_used__ __attribute__ ((__section__ (".initcall.init")))
-#define __exit_call \
- __attribute_used__ __attribute__ ((__section__ (".exitcall.exit")))
-
-/* For assembly routines
-#define __INIT .section ".text.init","ax"
-#define __FINIT .previous
-#define __INITDATA .section ".data.init","aw"
-*/
-
#endif /* _XEN_ASM_INIT_H */
diff -r bf25488db8eb -r 60f91c9f1a24 xen/include/xen/init.h
--- a/xen/include/xen/init.h Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/include/xen/init.h Wed Jan 03 23:53:27 2007 +0000
@@ -3,6 +3,25 @@
#include <xen/config.h>
#include <asm/init.h>
+
+/*
+ * Mark functions and data as being only used at initialization
+ * or exit time.
+ */
+#define __init \
+ __attribute__ ((__section__ (".init.text")))
+#define __exit \
+ __attribute_used__ __attribute__ ((__section__(".exit.text")))
+#define __initdata \
+ __attribute__ ((__section__ (".init.data")))
+#define __exitdata \
+ __attribute_used__ __attribute__ ((__section__ (".exit.data")))
+#define __initsetup \
+ __attribute_used__ __attribute__ ((__section__ (".init.setup")))
+#define __init_call \
+ __attribute_used__ __attribute__ ((__section__ (".initcall1.init")))
+#define __exit_call \
+ __attribute_used__ __attribute__ ((__section__ (".exitcall.exit")))
/* These macros are used to mark some functions or
* initialized data (doesn't apply to uninitialized data)
diff -r bf25488db8eb -r 60f91c9f1a24 xen/include/xen/kernel.h
--- a/xen/include/xen/kernel.h Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/include/xen/kernel.h Wed Jan 03 23:53:27 2007 +0000
@@ -56,6 +56,23 @@
1; \
})
+extern char _start[], _end[];
+#define is_kernel(p) ({ \
+ char *__p = (char *)(unsigned long)(p); \
+ (__p >= _start) && (__p <= _end); \
+})
+
+extern char _stext[], _etext[];
+#define is_kernel_text(p) ({ \
+ char *__p = (char *)(unsigned long)(p); \
+ (__p >= _stext) && (__p <= _etext); \
+})
+
+extern char _sinittext[], _einittext[];
+#define is_kernel_inittext(p) ({ \
+ char *__p = (char *)(unsigned long)(p); \
+ (__p >= _sinittext) && (__p <= _einittext); \
+})
#endif /* _LINUX_KERNEL_H */
diff -r bf25488db8eb -r 60f91c9f1a24 xen/include/xen/symbols.h
--- a/xen/include/xen/symbols.h Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/include/xen/symbols.h Wed Jan 03 23:53:27 2007 +0000
@@ -6,9 +6,6 @@
#define KSYM_NAME_LEN 127
-extern int is_kernel_text(unsigned long addr);
-extern unsigned long kernel_text_end(void);
-
/* Lookup an address. */
const char *symbols_lookup(unsigned long addr,
unsigned long *symbolsize,
@@ -16,7 +13,7 @@ const char *symbols_lookup(unsigned long
char *namebuf);
/* Replace "%s" in format with address, if found */
-extern void __print_symbol(const char *fmt, unsigned long address);
+void __print_symbol(const char *fmt, unsigned long address);
/* This macro allows us to keep printk typechecking */
static void __check_printsym_format(const char *fmt, ...)
diff -r bf25488db8eb -r 60f91c9f1a24 xen/tools/symbols.c
--- a/xen/tools/symbols.c Wed Jan 03 14:08:42 2007 +0000
+++ b/xen/tools/symbols.c Wed Jan 03 23:53:27 2007 +0000
@@ -5,7 +5,7 @@
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
- * Usage: nm -n <object-file> | scripts/symbols [--all-symbols] > symbols.S
+ * Usage: nm -n vmlinux | scripts/symbols [--all-symbols] > symbols.S
*
* ChangeLog:
*
@@ -24,75 +24,37 @@
*
*/
+#define _GNU_SOURCE
+
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
-/* maximum token length used. It doesn't pay to increase it a lot, because
- * very long substrings probably don't repeat themselves too often. */
-#define MAX_TOK_SIZE 11
#define KSYM_NAME_LEN 127
-/* we use only a subset of the complete symbol table to gather the token count,
- * to speed up compression, at the expense of a little compression ratio */
-#define WORKING_SET 1024
-
-/* first find the best token only on the list of tokens that would profit more
- * than GOOD_BAD_THRESHOLD. Only if this list is empty go to the "bad" list.
- * Increasing this value will put less tokens on the "good" list, so the search
- * is faster. However, if the good list runs out of tokens, we must painfully
- * search the bad list. */
-#define GOOD_BAD_THRESHOLD 10
-
-/* token hash parameters */
-#define HASH_BITS 18
-#define HASH_TABLE_SIZE (1 << HASH_BITS)
-#define HASH_MASK (HASH_TABLE_SIZE - 1)
-#define HASH_BASE_OFFSET 2166136261U
-#define HASH_FOLD(a) ((a)&(HASH_MASK))
-
-/* flags to mark symbols */
-#define SYM_FLAG_VALID 1
-#define SYM_FLAG_SAMPLED 2
struct sym_entry {
unsigned long long addr;
- char type;
- unsigned char flags;
- unsigned char len;
+ unsigned int len;
unsigned char *sym;
};
static struct sym_entry *table;
-static int size, cnt;
-static unsigned long long _stext, _etext;
+static unsigned int table_size, table_cnt;
+static unsigned long long _stext, _etext, _sinittext, _einittext, _sextratext,
_eextratext;
static int all_symbols = 0;
static char symbol_prefix_char = '\0';
-struct token {
- unsigned char data[MAX_TOK_SIZE];
- unsigned char len;
- /* profit: the number of bytes that could be saved by inserting this
- * token into the table */
- int profit;
- struct token *next; /* next token on the hash list */
- struct token *right; /* next token on the good/bad list */
- struct token *left; /* previous token on the good/bad list */
- struct token *smaller; /* token that is less one letter than this one */
- };
-
-struct token bad_head, good_head;
-struct token *hash_table[HASH_TABLE_SIZE];
+int token_profit[0x10000];
/* the table that holds the result of the compression */
-unsigned char best_table[256][MAX_TOK_SIZE+1];
+unsigned char best_table[256][2];
unsigned char best_table_len[256];
-static void
-usage(void)
+static void usage(void)
{
fprintf(stderr, "Usage: symbols [--all-symbols]
[--symbol-prefix=<prefix char>] < in.map > out.S\n");
exit(1);
@@ -102,21 +64,19 @@ usage(void)
* This ignores the intensely annoying "mapping symbols" found
* in ARM ELF files: $a, $t and $d.
*/
-static inline int
-is_arm_mapping_symbol(const char *str)
+static inline int is_arm_mapping_symbol(const char *str)
{
return str[0] == '$' && strchr("atd", str[1])
&& (str[2] == '\0' || str[2] == '.');
}
-static int
-read_symbol(FILE *in, struct sym_entry *s)
+static int read_symbol(FILE *in, struct sym_entry *s)
{
char str[500];
- char *sym;
+ char *sym, stype;
int rc;
- rc = fscanf(in, "%llx %c %499s\n", &s->addr, &s->type, str);
+ rc = fscanf(in, "%llx %c %499s\n", &s->addr, &stype, str);
if (rc != 3) {
if (rc != EOF) {
/* skip line */
@@ -135,7 +95,15 @@ read_symbol(FILE *in, struct sym_entry *
_stext = s->addr;
else if (strcmp(sym, "_etext") == 0)
_etext = s->addr;
- else if (toupper(s->type) == 'A')
+ else if (strcmp(sym, "_sinittext") == 0)
+ _sinittext = s->addr;
+ else if (strcmp(sym, "_einittext") == 0)
+ _einittext = s->addr;
+ else if (strcmp(sym, "_sextratext") == 0)
+ _sextratext = s->addr;
+ else if (strcmp(sym, "_eextratext") == 0)
+ _eextratext = s->addr;
+ else if (toupper(stype) == 'A')
{
/* Keep these useful absolute symbols */
if (strcmp(sym, "__kernel_syscall_via_break") &&
@@ -145,22 +113,24 @@ read_symbol(FILE *in, struct sym_entry *
return -1;
}
- else if (toupper(s->type) == 'U' ||
+ else if (toupper(stype) == 'U' ||
is_arm_mapping_symbol(sym))
+ return -1;
+ /* exclude also MIPS ELF local symbols ($L123 instead of .L123) */
+ else if (str[0] == '$')
return -1;
/* include the type field in the symbol name, so that it gets
* compressed together */
s->len = strlen(str) + 1;
- s->sym = (unsigned char *) malloc(s->len + 1);
+ s->sym = malloc(s->len + 1);
strcpy((char *)s->sym + 1, str);
- s->sym[0] = s->type;
+ s->sym[0] = stype;
return 0;
}
-static int
-symbol_valid(struct sym_entry *s)
+static int symbol_valid(struct sym_entry *s)
{
/* Symbols which vary between passes. Passes 1 and 2 must have
* identical symbol lists. The symbols_* symbols below are only added
@@ -189,7 +159,9 @@ symbol_valid(struct sym_entry *s)
/* if --all-symbols is not specified, then symbols outside the text
* and inittext sections are discarded */
if (!all_symbols) {
- if (s->addr < _stext || s->addr > _etext)
+ if ((s->addr < _stext || s->addr > _etext)
+ && (s->addr < _sinittext || s->addr > _einittext)
+ && (s->addr < _sextratext || s->addr > _eextratext))
return 0;
/* Corner case. Discard any symbols with the same value as
* _etext _einittext or _eextratext; they can move between pass
@@ -197,7 +169,9 @@ symbol_valid(struct sym_entry *s)
* move then they may get dropped in pass 2, which breaks the
* symbols rules.
*/
- if (s->addr == _etext && strcmp((char *)s->sym + offset,
"_etext"))
+ if ((s->addr == _etext && strcmp((char*)s->sym + offset,
"_etext")) ||
+ (s->addr == _einittext && strcmp((char*)s->sym + offset,
"_einittext")) ||
+ (s->addr == _eextratext && strcmp((char*)s->sym + offset,
"_eextratext")))
return 0;
}
@@ -212,20 +186,19 @@ symbol_valid(struct sym_entry *s)
return 1;
}
-static void
-read_map(FILE *in)
+static void read_map(FILE *in)
{
while (!feof(in)) {
- if (cnt >= size) {
- size += 10000;
- table = realloc(table, sizeof(*table) * size);
+ if (table_cnt >= table_size) {
+ table_size += 10000;
+ table = realloc(table, sizeof(*table) * table_size);
if (!table) {
fprintf(stderr, "out of memory\n");
exit (1);
}
}
- if (read_symbol(in, &table[cnt]) == 0)
- cnt++;
+ if (read_symbol(in, &table[table_cnt]) == 0)
+ table_cnt++;
}
}
@@ -269,10 +242,9 @@ static int expand_symbol(unsigned char *
return total;
}
-static void
-write_src(void)
-{
- int i, k, off, valid;
+static void write_src(void)
+{
+ unsigned int i, k, off;
unsigned int best_idx[256];
unsigned int *markers;
char buf[KSYM_NAME_LEN+1];
@@ -289,33 +261,24 @@ write_src(void)
printf(".data\n");
output_label("symbols_addresses");
- valid = 0;
- for (i = 0; i < cnt; i++) {
- if (table[i].flags & SYM_FLAG_VALID) {
- printf("\tPTR\t%#llx\n", table[i].addr);
- valid++;
- }
+ for (i = 0; i < table_cnt; i++) {
+ printf("\tPTR\t%#llx\n", table[i].addr);
}
printf("\n");
output_label("symbols_num_syms");
- printf("\tPTR\t%d\n", valid);
+ printf("\tPTR\t%d\n", table_cnt);
printf("\n");
/* table of offset markers, that give the offset in the compressed
stream
* every 256 symbols */
- markers = (unsigned int *) malloc(sizeof(unsigned int)*((valid + 255) /
256));
+ markers = (unsigned int *) malloc(sizeof(unsigned int) * ((table_cnt +
255) / 256));
output_label("symbols_names");
- valid = 0;
off = 0;
- for (i = 0; i < cnt; i++) {
-
- if (!(table[i].flags & SYM_FLAG_VALID))
- continue;
-
- if ((valid & 0xFF) == 0)
- markers[valid >> 8] = off;
+ for (i = 0; i < table_cnt; i++) {
+ if ((i & 0xFF) == 0)
+ markers[i >> 8] = off;
printf("\t.byte 0x%02x", table[i].len);
for (k = 0; k < table[i].len; k++)
@@ -323,12 +286,11 @@ write_src(void)
printf("\n");
off += table[i].len + 1;
- valid++;
}
printf("\n");
output_label("symbols_markers");
- for (i = 0; i < ((valid + 255) >> 8); i++)
+ for (i = 0; i < ((table_cnt + 255) >> 8); i++)
printf("\tPTR\t%d\n", markers[i]);
printf("\n");
@@ -338,7 +300,7 @@ write_src(void)
off = 0;
for (i = 0; i < 256; i++) {
best_idx[i] = off;
- expand_symbol(best_table[i],best_table_len[i],buf);
+ expand_symbol(best_table[i], best_table_len[i], buf);
printf("\t.asciz\t\"%s\"\n", buf);
off += strlen(buf) + 1;
}
@@ -353,153 +315,13 @@ write_src(void)
/* table lookup compression functions */
-static inline unsigned int rehash_token(unsigned int hash, unsigned char data)
-{
- return ((hash * 16777619) ^ data);
-}
-
-static unsigned int hash_token(unsigned char *data, int len)
-{
- unsigned int hash=HASH_BASE_OFFSET;
- int i;
-
- for (i = 0; i < len; i++)
- hash = rehash_token(hash, data[i]);
-
- return HASH_FOLD(hash);
-}
-
-/* find a token given its data and hash value */
-static struct token *find_token_hash(unsigned char *data, int len, unsigned
int hash)
-{
- struct token *ptr;
-
- ptr = hash_table[hash];
-
- while (ptr) {
- if ((ptr->len == len) && (memcmp(ptr->data, data, len) == 0))
- return ptr;
- ptr=ptr->next;
- }
-
- return NULL;
-}
-
-static inline void insert_token_in_group(struct token *head, struct token *ptr)
-{
- ptr->right = head->right;
- ptr->right->left = ptr;
- head->right = ptr;
- ptr->left = head;
-}
-
-static inline void remove_token_from_group(struct token *ptr)
-{
- ptr->left->right = ptr->right;
- ptr->right->left = ptr->left;
-}
-
-
-/* build the counts for all the tokens that start with "data", and have lenghts
- * from 2 to "len" */
-static void learn_token(unsigned char *data, int len)
-{
- struct token *ptr,*last_ptr;
- int i, newprofit;
- unsigned int hash = HASH_BASE_OFFSET;
- unsigned int hashes[MAX_TOK_SIZE + 1];
-
- if (len > MAX_TOK_SIZE)
- len = MAX_TOK_SIZE;
-
- /* calculate and store the hash values for all the sub-tokens */
- hash = rehash_token(hash, data[0]);
- for (i = 2; i <= len; i++) {
- hash = rehash_token(hash, data[i-1]);
- hashes[i] = HASH_FOLD(hash);
- }
-
- last_ptr = NULL;
- ptr = NULL;
-
- for (i = len; i >= 2; i--) {
- hash = hashes[i];
-
- if (!ptr) ptr = find_token_hash(data, i, hash);
-
- if (!ptr) {
- /* create a new token entry */
- ptr = (struct token *) malloc(sizeof(*ptr));
-
- memcpy(ptr->data, data, i);
- ptr->len = i;
-
- /* when we create an entry, it's profit is 0 because
- * we also take into account the size of the token on
- * the compressed table. We then subtract
GOOD_BAD_THRESHOLD
- * so that the test to see if this token belongs to
- * the good or bad list, is a comparison to zero */
- ptr->profit = -GOOD_BAD_THRESHOLD;
-
- ptr->next = hash_table[hash];
- hash_table[hash] = ptr;
-
- insert_token_in_group(&bad_head, ptr);
-
- ptr->smaller = NULL;
- } else {
- newprofit = ptr->profit + (ptr->len - 1);
- /* check to see if this token needs to be moved to a
- * different list */
- if((ptr->profit < 0) && (newprofit >= 0)) {
- remove_token_from_group(ptr);
- insert_token_in_group(&good_head,ptr);
- }
- ptr->profit = newprofit;
- }
-
- if (last_ptr) last_ptr->smaller = ptr;
- last_ptr = ptr;
-
- ptr = ptr->smaller;
- }
-}
-
-/* decrease the counts for all the tokens that start with "data", and have
lenghts
- * from 2 to "len". This function is much simpler than learn_token because we
have
- * more guarantees (tho tokens exist, the ->smaller pointer is set, etc.)
- * The two separate functions exist only because of compression performance */
-static void forget_token(unsigned char *data, int len)
-{
- struct token *ptr;
- int i, newprofit;
- unsigned int hash=0;
-
- if (len > MAX_TOK_SIZE) len = MAX_TOK_SIZE;
-
- hash = hash_token(data, len);
- ptr = find_token_hash(data, len, hash);
-
- for (i = len; i >= 2; i--) {
-
- newprofit = ptr->profit - (ptr->len - 1);
- if ((ptr->profit >= 0) && (newprofit < 0)) {
- remove_token_from_group(ptr);
- insert_token_in_group(&bad_head, ptr);
- }
- ptr->profit=newprofit;
-
- ptr=ptr->smaller;
- }
-}
-
/* count all the possible tokens in a symbol */
static void learn_symbol(unsigned char *symbol, int len)
{
int i;
for (i = 0; i < len - 1; i++)
- learn_token(symbol + i, len - i);
+ token_profit[ symbol[i] + (symbol[i + 1] << 8) ]++;
}
/* decrease the count for all the possible tokens in a symbol */
@@ -508,117 +330,90 @@ static void forget_symbol(unsigned char
int i;
for (i = 0; i < len - 1; i++)
- forget_token(symbol + i, len - i);
-}
-
-/* set all the symbol flags and do the initial token count */
+ token_profit[ symbol[i] + (symbol[i + 1] << 8) ]--;
+}
+
+/* remove all the invalid symbols from the table and do the initial token
count */
static void build_initial_tok_table(void)
{
- int i, use_it, valid;
-
- valid = 0;
- for (i = 0; i < cnt; i++) {
- table[i].flags = 0;
+ unsigned int i, pos;
+
+ pos = 0;
+ for (i = 0; i < table_cnt; i++) {
if ( symbol_valid(&table[i]) ) {
- table[i].flags |= SYM_FLAG_VALID;
- valid++;
- }
- }
-
- use_it = 0;
- for (i = 0; i < cnt; i++) {
-
- /* subsample the available symbols. This method is almost like
- * a Bresenham's algorithm to get uniformly distributed samples
- * across the symbol table */
- if (table[i].flags & SYM_FLAG_VALID) {
-
- use_it += WORKING_SET;
-
- if (use_it >= valid) {
- table[i].flags |= SYM_FLAG_SAMPLED;
- use_it -= valid;
- }
- }
- if (table[i].flags & SYM_FLAG_SAMPLED)
- learn_symbol(table[i].sym, table[i].len);
- }
+ if (pos != i)
+ table[pos] = table[i];
+ learn_symbol(table[pos].sym, table[pos].len);
+ pos++;
+ }
+ }
+ table_cnt = pos;
}
/* replace a given token in all the valid symbols. Use the sampled symbols
* to update the counts */
-static void compress_symbols(unsigned char *str, int tlen, int idx)
-{
- int i, len, learn, size;
- unsigned char *p;
-
- for (i = 0; i < cnt; i++) {
-
- if (!(table[i].flags & SYM_FLAG_VALID)) continue;
+static void compress_symbols(unsigned char *str, int idx)
+{
+ unsigned int i, len, size;
+ unsigned char *p1, *p2;
+
+ for (i = 0; i < table_cnt; i++) {
len = table[i].len;
- learn = 0;
- p = table[i].sym;
+ p1 = table[i].sym;
+
+ /* find the token on the symbol */
+ p2 = memmem(p1, len, str, 2);
+ if (!p2) continue;
+
+ /* decrease the counts for this symbol's tokens */
+ forget_symbol(table[i].sym, len);
+
+ size = len;
do {
+ *p2 = idx;
+ p2++;
+ size -= (p2 - p1);
+ memmove(p2, p2 + 1, size);
+ p1 = p2;
+ len--;
+
+ if (size < 2) break;
+
/* find the token on the symbol */
- p = (unsigned char *) strstr((char *) p, (char *) str);
- if (!p) break;
-
- if (!learn) {
- /* if this symbol was used to count, decrease
it */
- if (table[i].flags & SYM_FLAG_SAMPLED)
- forget_symbol(table[i].sym, len);
- learn = 1;
- }
-
- *p = idx;
- size = (len - (p - table[i].sym)) - tlen + 1;
- memmove(p + 1, p + tlen, size);
- p++;
- len -= tlen - 1;
-
- } while (size >= tlen);
-
- if(learn) {
- table[i].len = len;
- /* if this symbol was used to count, learn it again */
- if(table[i].flags & SYM_FLAG_SAMPLED)
- learn_symbol(table[i].sym, len);
- }
+ p2 = memmem(p1, size, str, 2);
+
+ } while (p2);
+
+ table[i].len = len;
+
+ /* increase the counts for this symbol's new tokens */
+ learn_symbol(table[i].sym, len);
}
}
/* search the token with the maximum profit */
-static struct token *find_best_token(void)
-{
- struct token *ptr,*best,*head;
- int bestprofit;
+static int find_best_token(void)
+{
+ int i, best, bestprofit;
bestprofit=-10000;
-
- /* failsafe: if the "good" list is empty search from the "bad" list */
- if(good_head.right == &good_head) head = &bad_head;
- else head = &good_head;
-
- ptr = head->right;
- best = NULL;
- while (ptr != head) {
- if (ptr->profit > bestprofit) {
- bestprofit = ptr->profit;
- best = ptr;
- }
- ptr = ptr->right;
- }
-
+ best = 0;
+
+ for (i = 0; i < 0x10000; i++) {
+ if (token_profit[i] > bestprofit) {
+ best = i;
+ bestprofit = token_profit[i];
+ }
+ }
return best;
}
/* this is the core of the algorithm: calculate the "best" table */
static void optimize_result(void)
{
- struct token *best;
- int i;
+ int i, best;
/* using the '\0' symbol last allows compress_symbols to use standard
* fast string functions */
@@ -632,14 +427,12 @@ static void optimize_result(void)
best = find_best_token();
/* place it in the "best" table */
- best_table_len[i] = best->len;
- memcpy(best_table[i], best->data, best_table_len[i]);
- /* zero terminate the token so that we can use strstr
- in compress_symbols */
- best_table[i][best_table_len[i]]='\0';
+ best_table_len[i] = 2;
+ best_table[i][0] = best & 0xFF;
+ best_table[i][1] = (best >> 8) & 0xFF;
/* replace this token in all the valid symbols */
- compress_symbols(best_table[i], best_table_len[i], i);
+ compress_symbols(best_table[i], i);
}
}
}
@@ -647,39 +440,28 @@ static void optimize_result(void)
/* start by placing the symbols that are actually used on the table */
static void insert_real_symbols_in_table(void)
{
- int i, j, c;
+ unsigned int i, j, c;
memset(best_table, 0, sizeof(best_table));
memset(best_table_len, 0, sizeof(best_table_len));
- for (i = 0; i < cnt; i++) {
- if (table[i].flags & SYM_FLAG_VALID) {
- for (j = 0; j < table[i].len; j++) {
- c = table[i].sym[j];
- best_table[c][0]=c;
- best_table_len[c]=1;
- }
+ for (i = 0; i < table_cnt; i++) {
+ for (j = 0; j < table[i].len; j++) {
+ c = table[i].sym[j];
+ best_table[c][0]=c;
+ best_table_len[c]=1;
}
}
}
static void optimize_token_table(void)
{
- memset(hash_table, 0, sizeof(hash_table));
-
- good_head.left = &good_head;
- good_head.right = &good_head;
-
- bad_head.left = &bad_head;
- bad_head.right = &bad_head;
-
build_initial_tok_table();
insert_real_symbols_in_table();
/* When valid symbol is not registered, exit to error */
- if (good_head.left == good_head.right &&
- bad_head.left == bad_head.right) {
+ if (!table_cnt) {
fprintf(stderr, "No valid symbol.\n");
exit(1);
}
@@ -688,8 +470,7 @@ static void optimize_token_table(void)
}
-int
-main(int argc, char **argv)
+int main(int argc, char **argv)
{
if (argc >= 2) {
int i;
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