scripts/sorttable: Rename 'sortextable' to 'sorttable'

Use a more generic name for additional table sorting usecases,
such as the upcoming ORC table sorting feature. This tool is
not tied to exception table sorting anymore.

No functional changes intended.

[ mingo: Rewrote the changelog. ]

Signed-off-by: Shile Zhang <shile.zhang@linux.alibaba.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: linux-kbuild@vger.kernel.org
Link: https://lkml.kernel.org/r/20191204004633.88660-6-shile.zhang@linux.alibaba.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 0 insertions, 373 deletions

diff --git a/scripts/sortextable.c b/scripts/sortextable.c
deleted file mode 100644
index efa2839865cd..000000000000
--- a/scripts/sortextable.c
+++ /dev/null
@@ -1,373 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * sortextable.c: Sort the kernel's exception table
- *
- * Copyright 2011 - 2012 Cavium, Inc.
- *
- * Based on code taken from recortmcount.c which is:
- *
- * Copyright 2009 John F. Reiser <jreiser@BitWagon.com>.  All rights reserved.
- *
- * Restructured to fit Linux format, as well as other updates:
- *  Copyright 2010 Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
- */
-
-/*
- * Strategy: alter the vmlinux file in-place.
- */
-
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <getopt.h>
-#include <elf.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <tools/be_byteshift.h>
-#include <tools/le_byteshift.h>
-
-#ifndef EM_ARCOMPACT
-#define EM_ARCOMPACT	93
-#endif
-
-#ifndef EM_XTENSA
-#define EM_XTENSA	94
-#endif
-
-#ifndef EM_AARCH64
-#define EM_AARCH64	183
-#endif
-
-#ifndef EM_MICROBLAZE
-#define EM_MICROBLAZE	189
-#endif
-
-#ifndef EM_ARCV2
-#define EM_ARCV2	195
-#endif
-
-static uint32_t (*r)(const uint32_t *);
-static uint16_t (*r2)(const uint16_t *);
-static uint64_t (*r8)(const uint64_t *);
-static void (*w)(uint32_t, uint32_t *);
-static void (*w2)(uint16_t, uint16_t *);
-static void (*w8)(uint64_t, uint64_t *);
-typedef void (*table_sort_t)(char *, int);
-
-/*
- * Get the whole file as a programming convenience in order to avoid
- * malloc+lseek+read+free of many pieces.  If successful, then mmap
- * avoids copying unused pieces; else just read the whole file.
- * Open for both read and write.
- */
-static void *mmap_file(char const *fname, size_t *size)
-{
-	int fd;
-	struct stat sb;
-	void *addr = NULL;
-
-	fd = open(fname, O_RDWR);
-	if (fd < 0) {
-		perror(fname);
-		return NULL;
-	}
-	if (fstat(fd, &sb) < 0) {
-		perror(fname);
-		goto out;
-	}
-	if (!S_ISREG(sb.st_mode)) {
-		fprintf(stderr, "not a regular file: %s\n", fname);
-		goto out;
-	}
-
-	addr = mmap(0, sb.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
-	if (addr == MAP_FAILED) {
-		fprintf(stderr, "Could not mmap file: %s\n", fname);
-		goto out;
-	}
-
-	*size = sb.st_size;
-
-out:
-	close(fd);
-	return addr;
-}
-
-static uint32_t rbe(const uint32_t *x)
-{
-	return get_unaligned_be32(x);
-}
-
-static uint16_t r2be(const uint16_t *x)
-{
-	return get_unaligned_be16(x);
-}
-
-static uint64_t r8be(const uint64_t *x)
-{
-	return get_unaligned_be64(x);
-}
-
-static uint32_t rle(const uint32_t *x)
-{
-	return get_unaligned_le32(x);
-}
-
-static uint16_t r2le(const uint16_t *x)
-{
-	return get_unaligned_le16(x);
-}
-
-static uint64_t r8le(const uint64_t *x)
-{
-	return get_unaligned_le64(x);
-}
-
-static void wbe(uint32_t val, uint32_t *x)
-{
-	put_unaligned_be32(val, x);
-}
-
-static void w2be(uint16_t val, uint16_t *x)
-{
-	put_unaligned_be16(val, x);
-}
-
-static void w8be(uint64_t val, uint64_t *x)
-{
-	put_unaligned_be64(val, x);
-}
-
-static void wle(uint32_t val, uint32_t *x)
-{
-	put_unaligned_le32(val, x);
-}
-
-static void w2le(uint16_t val, uint16_t *x)
-{
-	put_unaligned_le16(val, x);
-}
-
-static void w8le(uint64_t val, uint64_t *x)
-{
-	put_unaligned_le64(val, x);
-}
-
-/*
- * Move reserved section indices SHN_LORESERVE..SHN_HIRESERVE out of
- * the way to -256..-1, to avoid conflicting with real section
- * indices.
- */
-#define SPECIAL(i) ((i) - (SHN_HIRESERVE + 1))
-
-static inline int is_shndx_special(unsigned int i)
-{
-	return i != SHN_XINDEX && i >= SHN_LORESERVE && i <= SHN_HIRESERVE;
-}
-
-/* Accessor for sym->st_shndx, hides ugliness of "64k sections" */
-static inline unsigned int get_secindex(unsigned int shndx,
-					unsigned int sym_offs,
-					const Elf32_Word *symtab_shndx_start)
-{
-	if (is_shndx_special(shndx))
-		return SPECIAL(shndx);
-	if (shndx != SHN_XINDEX)
-		return shndx;
-	return r(&symtab_shndx_start[sym_offs]);
-}
-
-/* 32 bit and 64 bit are very similar */
-#include "sortextable.h"
-#define SORTEXTABLE_64
-#include "sortextable.h"
-
-static int compare_relative_table(const void *a, const void *b)
-{
-	int32_t av = (int32_t)r(a);
-	int32_t bv = (int32_t)r(b);
-
-	if (av < bv)
-		return -1;
-	if (av > bv)
-		return 1;
-	return 0;
-}
-
-static void sort_relative_table(char *extab_image, int image_size)
-{
-	int i = 0;
-
-	/*
-	 * Do the same thing the runtime sort does, first normalize to
-	 * being relative to the start of the section.
-	 */
-	while (i < image_size) {
-		uint32_t *loc = (uint32_t *)(extab_image + i);
-		w(r(loc) + i, loc);
-		i += 4;
-	}
-
-	qsort(extab_image, image_size / 8, 8, compare_relative_table);
-
-	/* Now denormalize. */
-	i = 0;
-	while (i < image_size) {
-		uint32_t *loc = (uint32_t *)(extab_image + i);
-		w(r(loc) - i, loc);
-		i += 4;
-	}
-}
-
-static void x86_sort_relative_table(char *extab_image, int image_size)
-{
-	int i = 0;
-
-	while (i < image_size) {
-		uint32_t *loc = (uint32_t *)(extab_image + i);
-
-		w(r(loc) + i, loc);
-		w(r(loc + 1) + i + 4, loc + 1);
-		w(r(loc + 2) + i + 8, loc + 2);
-
-		i += sizeof(uint32_t) * 3;
-	}
-
-	qsort(extab_image, image_size / 12, 12, compare_relative_table);
-
-	i = 0;
-	while (i < image_size) {
-		uint32_t *loc = (uint32_t *)(extab_image + i);
-
-		w(r(loc) - i, loc);
-		w(r(loc + 1) - (i + 4), loc + 1);
-		w(r(loc + 2) - (i + 8), loc + 2);
-
-		i += sizeof(uint32_t) * 3;
-	}
-}
-
-static int do_file(char const *const fname, void *addr)
-{
-	int rc = -1;
-	Elf32_Ehdr *ehdr = addr;
-	table_sort_t custom_sort = NULL;
-
-	switch (ehdr->e_ident[EI_DATA]) {
-	case ELFDATA2LSB:
-		r	= rle;
-		r2	= r2le;
-		r8	= r8le;
-		w	= wle;
-		w2	= w2le;
-		w8	= w8le;
-		break;
-	case ELFDATA2MSB:
-		r	= rbe;
-		r2	= r2be;
-		r8	= r8be;
-		w	= wbe;
-		w2	= w2be;
-		w8	= w8be;
-		break;
-	default:
-		fprintf(stderr, "unrecognized ELF data encoding %d: %s\n",
-			ehdr->e_ident[EI_DATA], fname);
-		return -1;
-	}
-
-	if (memcmp(ELFMAG, ehdr->e_ident, SELFMAG) != 0 ||
-	    (r2(&ehdr->e_type) != ET_EXEC && r2(&ehdr->e_type) != ET_DYN) ||
-	    ehdr->e_ident[EI_VERSION] != EV_CURRENT) {
-		fprintf(stderr, "unrecognized ET_EXEC/ET_DYN file %s\n", fname);
-		return -1;
-	}
-
-	switch (r2(&ehdr->e_machine)) {
-	case EM_386:
-	case EM_X86_64:
-		custom_sort = x86_sort_relative_table;
-		break;
-	case EM_S390:
-	case EM_AARCH64:
-	case EM_PARISC:
-	case EM_PPC:
-	case EM_PPC64:
-		custom_sort = sort_relative_table;
-		break;
-	case EM_ARCOMPACT:
-	case EM_ARCV2:
-	case EM_ARM:
-	case EM_MICROBLAZE:
-	case EM_MIPS:
-	case EM_XTENSA:
-		break;
-	default:
-		fprintf(stderr, "unrecognized e_machine %d %s\n",
-			r2(&ehdr->e_machine), fname);
-		return -1;
-	}
-
-	switch (ehdr->e_ident[EI_CLASS]) {
-	case ELFCLASS32:
-		if (r2(&ehdr->e_ehsize) != sizeof(Elf32_Ehdr) ||
-		    r2(&ehdr->e_shentsize) != sizeof(Elf32_Shdr)) {
-			fprintf(stderr,
-				"unrecognized ET_EXEC/ET_DYN file: %s\n", fname);
-			break;
-		}
-		rc = do_sort_32(ehdr, fname, custom_sort);
-		break;
-	case ELFCLASS64:
-		{
-		Elf64_Ehdr *const ghdr = (Elf64_Ehdr *)ehdr;
-		if (r2(&ghdr->e_ehsize) != sizeof(Elf64_Ehdr) ||
-		    r2(&ghdr->e_shentsize) != sizeof(Elf64_Shdr)) {
-			fprintf(stderr,
-				"unrecognized ET_EXEC/ET_DYN file: %s\n",
-				fname);
-			break;
-		}
-		rc = do_sort_64(ghdr, fname, custom_sort);
-		}
-		break;
-	default:
-		fprintf(stderr, "unrecognized ELF class %d %s\n",
-			ehdr->e_ident[EI_CLASS], fname);
-		break;
-	}
-
-	return rc;
-}
-
-int main(int argc, char *argv[])
-{
-	int i, n_error = 0;  /* gcc-4.3.0 false positive complaint */
-	size_t size = 0;
-	void *addr = NULL;
-
-	if (argc < 2) {
-		fprintf(stderr, "usage: sortextable vmlinux...\n");
-		return 0;
-	}
-
-	/* Process each file in turn, allowing deep failure. */
-	for (i = 1; i < argc; i++) {
-		addr = mmap_file(argv[i], &size);
-		if (!addr) {
-			++n_error;
-			continue;
-		}
-
-		if (do_file(argv[i], addr))
-			++n_error;
-
-		munmap(addr, size);
-	}
-
-	return !!n_error;
-}