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d9fd5a7189
Grab a copy of arch/mips/kernel/syscalls/syscall_n64.tbl and use it to
generate tools/perf/arch/mips/include/generated/asm/syscalls_n64.c file,
this is similar with commit 1b700c9975
("perf tools: Build syscall
table .c header from kernel's syscall_64.tbl")
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Juxin Gao <gaojuxin@loongson.cn>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Xuefeng Li <lixuefeng@loongson.cn>
Cc: linux-mips@vger.kernel.org
Link: http://lore.kernel.org/lkml/1612409724-3516-4-git-send-email-yangtiezhu@loongson.cn
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
181 lines
4.4 KiB
C
181 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* System call table mapper
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*
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* (C) 2016 Arnaldo Carvalho de Melo <acme@redhat.com>
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*/
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#include "syscalltbl.h"
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#include <stdlib.h>
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#include <linux/compiler.h>
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#include <linux/zalloc.h>
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#ifdef HAVE_SYSCALL_TABLE_SUPPORT
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#include <string.h>
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#include "string2.h"
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#if defined(__x86_64__)
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#include <asm/syscalls_64.c>
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const int syscalltbl_native_max_id = SYSCALLTBL_x86_64_MAX_ID;
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static const char **syscalltbl_native = syscalltbl_x86_64;
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#elif defined(__s390x__)
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#include <asm/syscalls_64.c>
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const int syscalltbl_native_max_id = SYSCALLTBL_S390_64_MAX_ID;
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static const char **syscalltbl_native = syscalltbl_s390_64;
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#elif defined(__powerpc64__)
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#include <asm/syscalls_64.c>
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const int syscalltbl_native_max_id = SYSCALLTBL_POWERPC_64_MAX_ID;
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static const char **syscalltbl_native = syscalltbl_powerpc_64;
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#elif defined(__powerpc__)
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#include <asm/syscalls_32.c>
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const int syscalltbl_native_max_id = SYSCALLTBL_POWERPC_32_MAX_ID;
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static const char **syscalltbl_native = syscalltbl_powerpc_32;
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#elif defined(__aarch64__)
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#include <asm/syscalls.c>
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const int syscalltbl_native_max_id = SYSCALLTBL_ARM64_MAX_ID;
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static const char **syscalltbl_native = syscalltbl_arm64;
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#elif defined(__mips__)
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#include <asm/syscalls_n64.c>
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const int syscalltbl_native_max_id = SYSCALLTBL_MIPS_N64_MAX_ID;
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static const char **syscalltbl_native = syscalltbl_mips_n64;
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#endif
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struct syscall {
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int id;
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const char *name;
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};
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static int syscallcmpname(const void *vkey, const void *ventry)
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{
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const char *key = vkey;
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const struct syscall *entry = ventry;
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return strcmp(key, entry->name);
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}
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static int syscallcmp(const void *va, const void *vb)
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{
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const struct syscall *a = va, *b = vb;
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return strcmp(a->name, b->name);
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}
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static int syscalltbl__init_native(struct syscalltbl *tbl)
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{
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int nr_entries = 0, i, j;
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struct syscall *entries;
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for (i = 0; i <= syscalltbl_native_max_id; ++i)
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if (syscalltbl_native[i])
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++nr_entries;
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entries = tbl->syscalls.entries = malloc(sizeof(struct syscall) * nr_entries);
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if (tbl->syscalls.entries == NULL)
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return -1;
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for (i = 0, j = 0; i <= syscalltbl_native_max_id; ++i) {
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if (syscalltbl_native[i]) {
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entries[j].name = syscalltbl_native[i];
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entries[j].id = i;
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++j;
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}
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}
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qsort(tbl->syscalls.entries, nr_entries, sizeof(struct syscall), syscallcmp);
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tbl->syscalls.nr_entries = nr_entries;
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tbl->syscalls.max_id = syscalltbl_native_max_id;
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return 0;
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}
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struct syscalltbl *syscalltbl__new(void)
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{
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struct syscalltbl *tbl = malloc(sizeof(*tbl));
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if (tbl) {
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if (syscalltbl__init_native(tbl)) {
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free(tbl);
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return NULL;
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}
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}
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return tbl;
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}
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void syscalltbl__delete(struct syscalltbl *tbl)
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{
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zfree(&tbl->syscalls.entries);
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free(tbl);
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}
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const char *syscalltbl__name(const struct syscalltbl *tbl __maybe_unused, int id)
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{
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return id <= syscalltbl_native_max_id ? syscalltbl_native[id]: NULL;
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}
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int syscalltbl__id(struct syscalltbl *tbl, const char *name)
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{
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struct syscall *sc = bsearch(name, tbl->syscalls.entries,
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tbl->syscalls.nr_entries, sizeof(*sc),
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syscallcmpname);
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return sc ? sc->id : -1;
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}
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int syscalltbl__strglobmatch_next(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
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{
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int i;
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struct syscall *syscalls = tbl->syscalls.entries;
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for (i = *idx + 1; i < tbl->syscalls.nr_entries; ++i) {
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if (strglobmatch(syscalls[i].name, syscall_glob)) {
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*idx = i;
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return syscalls[i].id;
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}
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}
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return -1;
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}
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int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
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{
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*idx = -1;
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return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
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}
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#else /* HAVE_SYSCALL_TABLE_SUPPORT */
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#include <libaudit.h>
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struct syscalltbl *syscalltbl__new(void)
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{
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struct syscalltbl *tbl = zalloc(sizeof(*tbl));
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if (tbl)
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tbl->audit_machine = audit_detect_machine();
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return tbl;
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}
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void syscalltbl__delete(struct syscalltbl *tbl)
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{
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free(tbl);
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}
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const char *syscalltbl__name(const struct syscalltbl *tbl, int id)
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{
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return audit_syscall_to_name(id, tbl->audit_machine);
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}
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int syscalltbl__id(struct syscalltbl *tbl, const char *name)
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{
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return audit_name_to_syscall(name, tbl->audit_machine);
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}
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int syscalltbl__strglobmatch_next(struct syscalltbl *tbl __maybe_unused,
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const char *syscall_glob __maybe_unused, int *idx __maybe_unused)
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{
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return -1;
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}
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int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
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{
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return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
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}
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#endif /* HAVE_SYSCALL_TABLE_SUPPORT */
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