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-rw-r--r--scripts/sorttable.h380
1 files changed, 0 insertions, 380 deletions
diff --git a/scripts/sorttable.h b/scripts/sorttable.h
deleted file mode 100644
index a2baa2fefb13..000000000000
--- a/scripts/sorttable.h
+++ /dev/null
@@ -1,380 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * sorttable.h
- *
- * Added ORC unwind tables sort support and other updates:
- * Copyright (C) 1999-2019 Alibaba Group Holding Limited. by:
- * Shile Zhang <shile.zhang@linux.alibaba.com>
- *
- * Copyright 2011 - 2012 Cavium, Inc.
- *
- * Some of code was taken out of arch/x86/kernel/unwind_orc.c, written by:
- * Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com>
- *
- * Some of this code was taken out of recordmcount.h written by:
- *
- * Copyright 2009 John F. Reiser <jreiser@BitWagon.com>. All rights reserved.
- * Copyright 2010 Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
- */
-
-#undef extable_ent_size
-#undef compare_extable
-#undef do_sort
-#undef Elf_Addr
-#undef Elf_Ehdr
-#undef Elf_Shdr
-#undef Elf_Rel
-#undef Elf_Rela
-#undef Elf_Sym
-#undef ELF_R_SYM
-#undef Elf_r_sym
-#undef ELF_R_INFO
-#undef Elf_r_info
-#undef ELF_ST_BIND
-#undef ELF_ST_TYPE
-#undef fn_ELF_R_SYM
-#undef fn_ELF_R_INFO
-#undef uint_t
-#undef _r
-#undef _w
-
-#ifdef SORTTABLE_64
-# define extable_ent_size 16
-# define compare_extable compare_extable_64
-# define do_sort do_sort_64
-# define Elf_Addr Elf64_Addr
-# define Elf_Ehdr Elf64_Ehdr
-# define Elf_Shdr Elf64_Shdr
-# define Elf_Rel Elf64_Rel
-# define Elf_Rela Elf64_Rela
-# define Elf_Sym Elf64_Sym
-# define ELF_R_SYM ELF64_R_SYM
-# define Elf_r_sym Elf64_r_sym
-# define ELF_R_INFO ELF64_R_INFO
-# define Elf_r_info Elf64_r_info
-# define ELF_ST_BIND ELF64_ST_BIND
-# define ELF_ST_TYPE ELF64_ST_TYPE
-# define fn_ELF_R_SYM fn_ELF64_R_SYM
-# define fn_ELF_R_INFO fn_ELF64_R_INFO
-# define uint_t uint64_t
-# define _r r8
-# define _w w8
-#else
-# define extable_ent_size 8
-# define compare_extable compare_extable_32
-# define do_sort do_sort_32
-# define Elf_Addr Elf32_Addr
-# define Elf_Ehdr Elf32_Ehdr
-# define Elf_Shdr Elf32_Shdr
-# define Elf_Rel Elf32_Rel
-# define Elf_Rela Elf32_Rela
-# define Elf_Sym Elf32_Sym
-# define ELF_R_SYM ELF32_R_SYM
-# define Elf_r_sym Elf32_r_sym
-# define ELF_R_INFO ELF32_R_INFO
-# define Elf_r_info Elf32_r_info
-# define ELF_ST_BIND ELF32_ST_BIND
-# define ELF_ST_TYPE ELF32_ST_TYPE
-# define fn_ELF_R_SYM fn_ELF32_R_SYM
-# define fn_ELF_R_INFO fn_ELF32_R_INFO
-# define uint_t uint32_t
-# define _r r
-# define _w w
-#endif
-
-#if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED)
-/* ORC unwinder only support X86_64 */
-#include <errno.h>
-#include <pthread.h>
-#include <asm/orc_types.h>
-
-#define ERRSTR_MAXSZ 256
-
-char g_err[ERRSTR_MAXSZ];
-int *g_orc_ip_table;
-struct orc_entry *g_orc_table;
-
-pthread_t orc_sort_thread;
-
-static inline unsigned long orc_ip(const int *ip)
-{
- return (unsigned long)ip + *ip;
-}
-
-static int orc_sort_cmp(const void *_a, const void *_b)
-{
- struct orc_entry *orc_a;
- const int *a = g_orc_ip_table + *(int *)_a;
- const int *b = g_orc_ip_table + *(int *)_b;
- unsigned long a_val = orc_ip(a);
- unsigned long b_val = orc_ip(b);
-
- if (a_val > b_val)
- return 1;
- if (a_val < b_val)
- return -1;
-
- /*
- * The "weak" section terminator entries need to always be on the left
- * to ensure the lookup code skips them in favor of real entries.
- * These terminator entries exist to handle any gaps created by
- * whitelisted .o files which didn't get objtool generation.
- */
- orc_a = g_orc_table + (a - g_orc_ip_table);
- return orc_a->sp_reg == ORC_REG_UNDEFINED && !orc_a->end ? -1 : 1;
-}
-
-static void *sort_orctable(void *arg)
-{
- int i;
- int *idxs = NULL;
- int *tmp_orc_ip_table = NULL;
- struct orc_entry *tmp_orc_table = NULL;
- unsigned int *orc_ip_size = (unsigned int *)arg;
- unsigned int num_entries = *orc_ip_size / sizeof(int);
- unsigned int orc_size = num_entries * sizeof(struct orc_entry);
-
- idxs = (int *)malloc(*orc_ip_size);
- if (!idxs) {
- snprintf(g_err, ERRSTR_MAXSZ, "malloc idxs: %s",
- strerror(errno));
- pthread_exit(g_err);
- }
-
- tmp_orc_ip_table = (int *)malloc(*orc_ip_size);
- if (!tmp_orc_ip_table) {
- snprintf(g_err, ERRSTR_MAXSZ, "malloc tmp_orc_ip_table: %s",
- strerror(errno));
- pthread_exit(g_err);
- }
-
- tmp_orc_table = (struct orc_entry *)malloc(orc_size);
- if (!tmp_orc_table) {
- snprintf(g_err, ERRSTR_MAXSZ, "malloc tmp_orc_table: %s",
- strerror(errno));
- pthread_exit(g_err);
- }
-
- /* initialize indices array, convert ip_table to absolute address */
- for (i = 0; i < num_entries; i++) {
- idxs[i] = i;
- tmp_orc_ip_table[i] = g_orc_ip_table[i] + i * sizeof(int);
- }
- memcpy(tmp_orc_table, g_orc_table, orc_size);
-
- qsort(idxs, num_entries, sizeof(int), orc_sort_cmp);
-
- for (i = 0; i < num_entries; i++) {
- if (idxs[i] == i)
- continue;
-
- /* convert back to relative address */
- g_orc_ip_table[i] = tmp_orc_ip_table[idxs[i]] - i * sizeof(int);
- g_orc_table[i] = tmp_orc_table[idxs[i]];
- }
-
- free(idxs);
- free(tmp_orc_ip_table);
- free(tmp_orc_table);
- pthread_exit(NULL);
-}
-#endif
-
-static int compare_extable(const void *a, const void *b)
-{
- Elf_Addr av = _r(a);
- Elf_Addr bv = _r(b);
-
- if (av < bv)
- return -1;
- if (av > bv)
- return 1;
- return 0;
-}
-
-static int do_sort(Elf_Ehdr *ehdr,
- char const *const fname,
- table_sort_t custom_sort)
-{
- int rc = -1;
- Elf_Shdr *s, *shdr = (Elf_Shdr *)((char *)ehdr + _r(&ehdr->e_shoff));
- Elf_Shdr *strtab_sec = NULL;
- Elf_Shdr *symtab_sec = NULL;
- Elf_Shdr *extab_sec = NULL;
- Elf_Sym *sym;
- const Elf_Sym *symtab;
- Elf32_Word *symtab_shndx = NULL;
- Elf_Sym *sort_needed_sym = NULL;
- Elf_Shdr *sort_needed_sec;
- Elf_Rel *relocs = NULL;
- int relocs_size = 0;
- uint32_t *sort_needed_loc;
- const char *secstrings;
- const char *strtab;
- char *extab_image;
- int extab_index = 0;
- int i;
- int idx;
- unsigned int shnum;
- unsigned int shstrndx;
-#if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED)
- unsigned int orc_ip_size = 0;
- unsigned int orc_size = 0;
- unsigned int orc_num_entries = 0;
-#endif
-
- shstrndx = r2(&ehdr->e_shstrndx);
- if (shstrndx == SHN_XINDEX)
- shstrndx = r(&shdr[0].sh_link);
- secstrings = (const char *)ehdr + _r(&shdr[shstrndx].sh_offset);
-
- shnum = r2(&ehdr->e_shnum);
- if (shnum == SHN_UNDEF)
- shnum = _r(&shdr[0].sh_size);
-
- for (i = 0, s = shdr; s < shdr + shnum; i++, s++) {
- idx = r(&s->sh_name);
- if (!strcmp(secstrings + idx, "__ex_table")) {
- extab_sec = s;
- extab_index = i;
- }
- if (!strcmp(secstrings + idx, ".symtab"))
- symtab_sec = s;
- if (!strcmp(secstrings + idx, ".strtab"))
- strtab_sec = s;
-
- if ((r(&s->sh_type) == SHT_REL ||
- r(&s->sh_type) == SHT_RELA) &&
- r(&s->sh_info) == extab_index) {
- relocs = (void *)ehdr + _r(&s->sh_offset);
- relocs_size = _r(&s->sh_size);
- }
- if (r(&s->sh_type) == SHT_SYMTAB_SHNDX)
- symtab_shndx = (Elf32_Word *)((const char *)ehdr +
- _r(&s->sh_offset));
-
-#if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED)
- /* locate the ORC unwind tables */
- if (!strcmp(secstrings + idx, ".orc_unwind_ip")) {
- orc_ip_size = s->sh_size;
- g_orc_ip_table = (int *)((void *)ehdr +
- s->sh_offset);
- }
- if (!strcmp(secstrings + idx, ".orc_unwind")) {
- orc_size = s->sh_size;
- g_orc_table = (struct orc_entry *)((void *)ehdr +
- s->sh_offset);
- }
-#endif
- } /* for loop */
-
-#if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED)
- if (!g_orc_ip_table || !g_orc_table) {
- fprintf(stderr,
- "incomplete ORC unwind tables in file: %s\n", fname);
- goto out;
- }
-
- orc_num_entries = orc_ip_size / sizeof(int);
- if (orc_ip_size % sizeof(int) != 0 ||
- orc_size % sizeof(struct orc_entry) != 0 ||
- orc_num_entries != orc_size / sizeof(struct orc_entry)) {
- fprintf(stderr,
- "inconsistent ORC unwind table entries in file: %s\n",
- fname);
- goto out;
- }
-
- /* create thread to sort ORC unwind tables concurrently */
- if (pthread_create(&orc_sort_thread, NULL,
- sort_orctable, &orc_ip_size)) {
- fprintf(stderr,
- "pthread_create orc_sort_thread failed '%s': %s\n",
- strerror(errno), fname);
- goto out;
- }
-#endif
- if (!extab_sec) {
- fprintf(stderr, "no __ex_table in file: %s\n", fname);
- goto out;
- }
-
- if (!symtab_sec) {
- fprintf(stderr, "no .symtab in file: %s\n", fname);
- goto out;
- }
-
- if (!strtab_sec) {
- fprintf(stderr, "no .strtab in file: %s\n", fname);
- goto out;
- }
-
- extab_image = (void *)ehdr + _r(&extab_sec->sh_offset);
- strtab = (const char *)ehdr + _r(&strtab_sec->sh_offset);
- symtab = (const Elf_Sym *)((const char *)ehdr +
- _r(&symtab_sec->sh_offset));
-
- if (custom_sort) {
- custom_sort(extab_image, _r(&extab_sec->sh_size));
- } else {
- int num_entries = _r(&extab_sec->sh_size) / extable_ent_size;
- qsort(extab_image, num_entries,
- extable_ent_size, compare_extable);
- }
-
- /* If there were relocations, we no longer need them. */
- if (relocs)
- memset(relocs, 0, relocs_size);
-
- /* find the flag main_extable_sort_needed */
- for (sym = (void *)ehdr + _r(&symtab_sec->sh_offset);
- sym < sym + _r(&symtab_sec->sh_size) / sizeof(Elf_Sym);
- sym++) {
- if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
- continue;
- if (!strcmp(strtab + r(&sym->st_name),
- "main_extable_sort_needed")) {
- sort_needed_sym = sym;
- break;
- }
- }
-
- if (!sort_needed_sym) {
- fprintf(stderr,
- "no main_extable_sort_needed symbol in file: %s\n",
- fname);
- goto out;
- }
-
- sort_needed_sec = &shdr[get_secindex(r2(&sym->st_shndx),
- sort_needed_sym - symtab,
- symtab_shndx)];
- sort_needed_loc = (void *)ehdr +
- _r(&sort_needed_sec->sh_offset) +
- _r(&sort_needed_sym->st_value) -
- _r(&sort_needed_sec->sh_addr);
-
- /* extable has been sorted, clear the flag */
- w(0, sort_needed_loc);
- rc = 0;
-
-out:
-#if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED)
- if (orc_sort_thread) {
- void *retval = NULL;
- /* wait for ORC tables sort done */
- rc = pthread_join(orc_sort_thread, &retval);
- if (rc)
- fprintf(stderr,
- "pthread_join failed '%s': %s\n",
- strerror(errno), fname);
- else if (retval) {
- rc = -1;
- fprintf(stderr,
- "failed to sort ORC tables '%s': %s\n",
- (char *)retval, fname);
- }
- }
-#endif
- return rc;
-}
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