diff options
author | peter <peter@FreeBSD.org> | 2001-06-14 01:35:23 +0000 |
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committer | peter <peter@FreeBSD.org> | 2001-06-14 01:35:23 +0000 |
commit | e0f60f375647590faadab1692e0101a6ad3419cb (patch) | |
tree | 18ee998d48fbf62b2191eb2939c32ef7874ded05 /usr.bin | |
parent | 17e3eb1d7fabfb1b3177f23f73615d075b5963ed (diff) | |
download | FreeBSD-src-e0f60f375647590faadab1692e0101a6ad3419cb.zip FreeBSD-src-e0f60f375647590faadab1692e0101a6ad3419cb.tar.gz |
Part 2 of gensetdefs de-orbit burn. linker sets are now self contained
for ELF, see src/sys/linker_set.h log.
Diffstat (limited to 'usr.bin')
-rw-r--r-- | usr.bin/Makefile | 1 | ||||
-rw-r--r-- | usr.bin/gensetdefs/Makefile | 9 | ||||
-rw-r--r-- | usr.bin/gensetdefs/gensetdefs.8 | 44 | ||||
-rw-r--r-- | usr.bin/gensetdefs/gensetdefs.c | 375 |
4 files changed, 0 insertions, 429 deletions
diff --git a/usr.bin/Makefile b/usr.bin/Makefile index 6879eae..59891f9 100644 --- a/usr.bin/Makefile +++ b/usr.bin/Makefile @@ -52,7 +52,6 @@ SUBDIR= apply \ fsync \ ftp \ gencat \ - gensetdefs \ getconf \ getopt \ gprof \ diff --git a/usr.bin/gensetdefs/Makefile b/usr.bin/gensetdefs/Makefile deleted file mode 100644 index 35dab52..0000000 --- a/usr.bin/gensetdefs/Makefile +++ /dev/null @@ -1,9 +0,0 @@ -# $FreeBSD$ - -TARGET_ARCH?= ${MACHINE_ARCH} - -PROG= gensetdefs -MAN= gensetdefs.8 -CFLAGS+= -Darch_${TARGET_ARCH} - -.include <bsd.prog.mk> diff --git a/usr.bin/gensetdefs/gensetdefs.8 b/usr.bin/gensetdefs/gensetdefs.8 deleted file mode 100644 index 9cf6ee7..0000000 --- a/usr.bin/gensetdefs/gensetdefs.8 +++ /dev/null @@ -1,44 +0,0 @@ -.\" -.\" $FreeBSD$ -.\" -.Dd March 10, 1999 -.Dt GENSETDEFS 8 -.Os -.Sh NAME -.Nm gensetdefs -.Nd generate linker set definitions -.Sh SYNOPSIS -.Nm -.Ar -.Sh DESCRIPTION -The -.Nm -command is a special-purpose program to generate the -linker set definitions needed when building an ELF kernel. -Its -.Ar file -arguments are the names of ELF object files. -It scans the section names of the object files, -building a table of those that begin with -.Dv .set. , -which represent linker sets. Finally, for each set -.Dv foo -with -.Dv count -elements, it writes a line -.Fn DEFINE_SET foo count ; -to the standard output. -.Pp -This command is used by the kernel -.Pa makefile , -such as -.Pa /sys/i386/conf/Makefile.i386 -generic makefile for the -.Tn i386 . -.Sh SEE ALSO -.Xr config 8 -.Sh AUTHORS -The -.Nm -command was written by -.An John D. Polstra . diff --git a/usr.bin/gensetdefs/gensetdefs.c b/usr.bin/gensetdefs/gensetdefs.c deleted file mode 100644 index c6ce48f..0000000 --- a/usr.bin/gensetdefs/gensetdefs.c +++ /dev/null @@ -1,375 +0,0 @@ -/*- - * Copyright (c) 1997 John D. Polstra. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - -#include <sys/types.h> -#if defined(arch_i386) -#define __ELF_WORD_SIZE 32 -#include <sys/elf32.h> -#elif defined(arch_alpha) || defined(arch_sparc64) || defined(arch_ia64) -#define __ELF_WORD_SIZE 64 -#include <sys/elf64.h> -#endif -#include <sys/elf_generic.h> - -#include <err.h> -#include <stddef.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#define HASHSIZE 1009u /* Number of hash chains. */ -#define PREFIX ".set." /* Section name prefix for linker sets. */ - -/* One entry in the hash table. */ -typedef struct hashent { - struct hashent *next; /* Next entry with the same hash. */ - char *name; /* Name of the linker set. */ - size_t size; /* Size in bytes. */ -} hashent; - -/* Allocate storage for "count" objects of type "type". */ -#define NEW(type, count) ((type *) xmalloc((count) * sizeof(type))) - -static hashent *hashtab[HASHSIZE]; /* Hash chain heads. */ - -static void enter(const char *, size_t); -static int enter_sets(const char *); -static unsigned int hash(const char *); -static hashent *merge(void); -static int my_byte_order(void); -static void *xmalloc(size_t); -static char *xstrdup(const char *); - -/* - * This is a special-purpose program to generate the linker set definitions - * needed when building an ELF kernel. Its arguments are the names of - * ELF object files. It scans the section names of the object files, - * building a table of those that begin with ".set.", which represent - * linker sets. Finally, for each set "foo" with "count" elements, it - * writes a line "DEFINE_SET(foo, count);" to the standard output. - */ -int -main(int argc, char **argv) -{ - int i; - int status = EXIT_SUCCESS; - hashent *list; - FILE *fp; - char *ptrop; - int align, ptrsize; - - for (i = 1; i < argc; i++) - if (enter_sets(argv[i]) == -1) - status = EXIT_FAILURE; - -#if defined(arch_i386) - ptrop = "long"; - ptrsize = 4; - align = 2; -#elif defined(arch_alpha) || defined(arch_ia64) - ptrop = "quad"; - ptrsize = 8; - align = 3; -#endif - if (!ptrop) - errx(1, "unknown architecture"); - - fp = fopen("setdefs.h", "w"); - if (!fp) - err(1, "setdefs.h"); - list = merge(); - while (list != NULL) { - hashent *next; - - fprintf(fp, "DEFINE_SET(%s, %lu);\n", list->name, - (unsigned long) (list->size / ptrsize)); - next = list->next; - free(list->name); - free(list); - list = next; - } - fclose(fp); - - fp = fopen("setdef0.c", "w"); - if (!fp) - err(1, "setdef0.c"); - - fprintf(fp, "/* THIS FILE IS GENERATED, DO NOT EDIT. */\n\n"); - fprintf(fp, "\ -#define DEFINE_SET(set, count) \\\n\ -__asm__(\".section .set.\" #set \",\\\"aw\\\"\"); \\\n\ -__asm__(\".globl \" #set); \\\n\ -__asm__(\".type \" #set \",@object\"); \\\n\ -__asm__(\".p2align %d\"); \\\n\ -__asm__(#set \":\"); \\\n\ -__asm__(\".%s \" #count); \\\n\ -__asm__(\".previous\")\n\ - -#include \"setdefs.h\" /* Contains a `DEFINE_SET' for each set */\n\ -", align, ptrop); - - fclose(fp); - - fp = fopen("setdef1.c", "w"); - if (!fp) - err(1, "setdef0.c"); - - fprintf(fp, "/* THIS FILE IS GENERATED, DO NOT EDIT. */\n\n"); - fprintf(fp, "\ -#define DEFINE_SET(set, count) \\\n\ -__asm__(\".section .set.\" #set \",\\\"aw\\\"\"); \\\n\ -__asm__(\".%s 0\"); \\\n\ -__asm__(\".previous\")\n\ - -#include \"setdefs.h\" /* Contains a `DEFINE_SET' for each set */\n\ -", ptrop); - - fclose(fp); - - return (status); -} - -/* - * Enter the given string into the hash table, if it is not already there. - * Each hash chain is kept sorted, so that it will be easy to merge the - * chains to get a single sorted list. - */ -static void -enter(const char *name, size_t size) -{ - int c = 0; - hashent *entp; - hashent **linkp; - hashent *newp; - - linkp = &hashtab[hash(name) % HASHSIZE]; - while ((entp = *linkp) != NULL && (c = strcmp(name, entp->name)) > 0) - linkp = &entp->next; - - if (entp == NULL || c != 0) { /* Not found; create a new entry. */ - newp = NEW(hashent, 1); - newp->name = xstrdup(name); - newp->size = 0; - newp->next = entp; - *linkp = newp; - entp = newp; - } - - entp->size += size; -} - -/* - * Return a hash value for the given string. - */ -static unsigned int -hash(const char *s) -{ - unsigned char ch; - unsigned int h = 0; - - while((ch = *s) != '\0') { - h = 9*h + ch; - s++; - } - return (h); -} - -/* - * Enter the linker sets from the given ELF object file. Returns 0 on - * success, or -1 if an error occurred. - */ -static int -enter_sets(const char *filename) -{ - int i; - FILE *iop; - Elf_Shdr *shdr; - char *shstr; - Elf_Ehdr ehdr; - - if ((iop = fopen(filename, "rb")) == NULL) { - warn("%s", filename); - return (-1); - } - if (fread(&ehdr, sizeof ehdr, 1, iop) != 1 || - ehdr.e_ident[EI_MAG0] != ELFMAG0 || - ehdr.e_ident[EI_MAG1] != ELFMAG1 || - ehdr.e_ident[EI_MAG2] != ELFMAG2 || - ehdr.e_ident[EI_MAG3] != ELFMAG3) { - warnx("%s: not an ELF file", filename); - fclose(iop); - return (-1); - } - if (ehdr.e_ident[EI_VERSION] != EV_CURRENT) { - warnx("%s: unsupported ELF version", filename); - fclose(iop); - return (-1); - } - if (ehdr.e_ident[EI_DATA] != my_byte_order()) { - warnx("%s: unsupported byte order", filename); - fclose(iop); - return (-1); - } - if (ehdr.e_shoff == 0) { - warnx("%s: no section table", filename); - fclose(iop); - return (-1); - } - if (ehdr.e_shstrndx == SHN_UNDEF) { - warnx("%s: no section name string table", filename); - fclose(iop); - return (-1); - } - - shdr = NEW(Elf_Shdr, ehdr.e_shnum); - if (fseek(iop, ehdr.e_shoff, SEEK_SET) == -1) { - warn("%s", filename); - free(shdr); - fclose(iop); - return (-1); - } - if (fread(shdr, sizeof *shdr, ehdr.e_shnum, iop) != ehdr.e_shnum) { - warnx("%s: truncated section table", filename); - free(shdr); - fclose(iop); - return (-1); - } - - shstr = NEW(char, shdr[ehdr.e_shstrndx].sh_size); - if (fseek(iop, shdr[ehdr.e_shstrndx].sh_offset, SEEK_SET) == -1) { - warn("%s", filename); - free(shstr); - free(shdr); - fclose(iop); - return (-1); - } - if (fread(shstr, sizeof *shstr, shdr[ehdr.e_shstrndx].sh_size, iop) != - shdr[ehdr.e_shstrndx].sh_size) { - warnx("%s: truncated section name string table", filename); - free(shstr); - free(shdr); - fclose(iop); - return (-1); - } - - for (i = 1; i < ehdr.e_shnum; i++) { - const char *name = shstr + shdr[i].sh_name; - - if (strncmp(name, PREFIX, sizeof (PREFIX) - 1) == 0) - enter(name + sizeof (PREFIX) - 1, shdr[i].sh_size); - } - - free(shstr); - free(shdr); - fclose(iop); - return (0); -} - -/* - * Destructively merge all the sorted hash chains into a single sorted - * list, and return a pointer to its first element. - */ -static hashent * -merge(void) -{ - unsigned int numchains = HASHSIZE; - - while (numchains > 1) { /* More merging to do. */ - unsigned int lo = 0; - /* - * Merge chains pairwise from the outside in, halving the - * number of chains. - */ - while (numchains - lo >= 2) { - hashent **linkp = &hashtab[lo]; - hashent *l1 = hashtab[lo++]; - hashent *l2 = hashtab[--numchains]; - - while (l1 != NULL && l2 != NULL) { - if (strcmp(l1->name, l2->name) < 0) { - *linkp = l1; - linkp = &l1->next; - l1 = l1->next; - } else { - *linkp = l2; - linkp = &l2->next; - l2 = l2->next; - } - } - *linkp = l1==NULL ? l2 : l1; - } - } - - return (hashtab[0]); -} - -/* - * Determine the host byte order. - */ -static int -my_byte_order(void) -{ - static unsigned short s = 0xbbaa; - int byte0; - - byte0 = *(unsigned char *)&s; - if (byte0 == 0xaa) - return (ELFDATA2LSB); - else if (byte0 == 0xbb) - return (ELFDATA2MSB); - else - return (ELFDATANONE); -} - -/* - * Allocate a chunk of memory and return a pointer to it. Die if the - * malloc fails. - */ -static void * -xmalloc(size_t size) -{ - void *p; - - p = malloc(size); - if (p == NULL) - err(EXIT_FAILURE, "malloc"); - return (p); -} - -/* - * Duplicate a string and return a pointer to the copy. Die if there is - * not enough memory. - */ -static char * -xstrdup(const char *s) -{ - int size; - - size = strlen(s) + 1; - return (memcpy(xmalloc(size), s, size)); -} |