buildtools: remove C implementation of pmdinfogen
Delete the files no longer used in build process. Add myself as maintainer of new implementation. Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com>
This commit is contained in:
Dmitry Kozlyuk
Thomas Monjalon
parent
f0f93a7adf
commit
dd2ea14772
@ -133,7 +133,8 @@ F: lib/*/*.map
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Driver information
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M: Neil Horman <nhorman@tuxdriver.com>
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F: buildtools/pmdinfogen/
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M: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
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F: buildtools/pmdinfogen.py
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F: usertools/dpdk-pmdinfo.py
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F: doc/guides/tools/pmdinfo.rst
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@ -1,14 +0,0 @@
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# SPDX-License-Identifier: BSD-3-Clause
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# Copyright(c) 2017 Intel Corporation
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if is_windows
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subdir_done()
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endif
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pmdinfogen_inc = [global_inc]
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pmdinfogen_inc += include_directories('../../lib/librte_eal/include')
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pmdinfogen_inc += include_directories('../../lib/librte_pci')
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pmdinfogen = executable('pmdinfogen',
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'pmdinfogen.c',
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include_directories: pmdinfogen_inc,
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native: true)
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@ -1,456 +0,0 @@
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/* SPDX-License-Identifier: GPL-2.0
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* Postprocess pmd object files to export hw support
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*
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* Copyright 2016 Neil Horman <nhorman@tuxdriver.com>
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* Based in part on modpost.c from the linux kernel
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include <limits.h>
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#include <stdbool.h>
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#include <errno.h>
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#include <libgen.h>
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#include <rte_common.h>
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#include "pmdinfogen.h"
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#ifdef RTE_ARCH_64
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#define ADDR_SIZE 64
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#else
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#define ADDR_SIZE 32
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#endif
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static int use_stdin, use_stdout;
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static const char *sym_name(struct elf_info *elf, Elf_Sym *sym)
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{
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if (sym)
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return elf->strtab + sym->st_name;
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else
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return "(unknown)";
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}
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static void *grab_file(const char *filename, unsigned long *size)
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{
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struct stat st;
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void *map = MAP_FAILED;
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int fd = -1;
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if (!use_stdin) {
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fd = open(filename, O_RDONLY);
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if (fd < 0)
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return NULL;
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} else {
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/* from stdin, use a temporary file to mmap */
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FILE *infile;
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char buffer[1024];
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int n;
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infile = tmpfile();
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if (infile == NULL) {
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perror("tmpfile");
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return NULL;
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}
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fd = dup(fileno(infile));
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fclose(infile);
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if (fd < 0)
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return NULL;
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n = read(STDIN_FILENO, buffer, sizeof(buffer));
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while (n > 0) {
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if (write(fd, buffer, n) != n)
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goto failed;
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n = read(STDIN_FILENO, buffer, sizeof(buffer));
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}
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}
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if (fstat(fd, &st))
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goto failed;
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*size = st.st_size;
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map = mmap(NULL, *size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
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failed:
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close(fd);
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if (map == MAP_FAILED)
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return NULL;
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return map;
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}
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/**
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* Return a copy of the next line in a mmap'ed file.
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* spaces in the beginning of the line is trimmed away.
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* Return a pointer to a static buffer.
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**/
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static void release_file(void *file, unsigned long size)
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{
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munmap(file, size);
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}
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static void *get_sym_value(struct elf_info *info, const Elf_Sym *sym)
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{
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return RTE_PTR_ADD(info->hdr,
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info->sechdrs[sym->st_shndx].sh_offset + sym->st_value);
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}
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static Elf_Sym *find_sym_in_symtab(struct elf_info *info,
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const char *name, Elf_Sym *last)
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{
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Elf_Sym *idx;
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if (last)
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idx = last+1;
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else
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idx = info->symtab_start;
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for (; idx < info->symtab_stop; idx++) {
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const char *n = sym_name(info, idx);
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if (!strncmp(n, name, strlen(name)))
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return idx;
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}
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return NULL;
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}
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static int parse_elf(struct elf_info *info, const char *filename)
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{
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unsigned int i;
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Elf_Ehdr *hdr;
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Elf_Shdr *sechdrs;
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Elf_Sym *sym;
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int endian;
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unsigned int symtab_idx = ~0U, symtab_shndx_idx = ~0U;
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hdr = grab_file(filename, &info->size);
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if (!hdr) {
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perror(filename);
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exit(1);
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}
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info->hdr = hdr;
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if (info->size < sizeof(*hdr)) {
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/* file too small, assume this is an empty .o file */
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return 0;
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}
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/* Is this a valid ELF file? */
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if ((hdr->e_ident[EI_MAG0] != ELFMAG0) ||
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(hdr->e_ident[EI_MAG1] != ELFMAG1) ||
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(hdr->e_ident[EI_MAG2] != ELFMAG2) ||
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(hdr->e_ident[EI_MAG3] != ELFMAG3)) {
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/* Not an ELF file - silently ignore it */
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return 0;
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}
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if (!hdr->e_ident[EI_DATA]) {
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/* Unknown endian */
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return 0;
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}
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endian = hdr->e_ident[EI_DATA];
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/* Fix endianness in ELF header */
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hdr->e_type = TO_NATIVE(endian, 16, hdr->e_type);
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hdr->e_machine = TO_NATIVE(endian, 16, hdr->e_machine);
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hdr->e_version = TO_NATIVE(endian, 32, hdr->e_version);
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hdr->e_entry = TO_NATIVE(endian, ADDR_SIZE, hdr->e_entry);
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hdr->e_phoff = TO_NATIVE(endian, ADDR_SIZE, hdr->e_phoff);
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hdr->e_shoff = TO_NATIVE(endian, ADDR_SIZE, hdr->e_shoff);
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hdr->e_flags = TO_NATIVE(endian, 32, hdr->e_flags);
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hdr->e_ehsize = TO_NATIVE(endian, 16, hdr->e_ehsize);
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hdr->e_phentsize = TO_NATIVE(endian, 16, hdr->e_phentsize);
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hdr->e_phnum = TO_NATIVE(endian, 16, hdr->e_phnum);
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hdr->e_shentsize = TO_NATIVE(endian, 16, hdr->e_shentsize);
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hdr->e_shnum = TO_NATIVE(endian, 16, hdr->e_shnum);
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hdr->e_shstrndx = TO_NATIVE(endian, 16, hdr->e_shstrndx);
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sechdrs = RTE_PTR_ADD(hdr, hdr->e_shoff);
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info->sechdrs = sechdrs;
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/* Check if file offset is correct */
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if (hdr->e_shoff > info->size) {
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fprintf(stderr, "section header offset=%lu in file '%s' "
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"is bigger than filesize=%lu\n",
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(unsigned long)hdr->e_shoff,
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filename, info->size);
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return 0;
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}
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if (hdr->e_shnum == SHN_UNDEF) {
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/*
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* There are more than 64k sections,
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* read count from .sh_size.
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*/
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info->num_sections =
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TO_NATIVE(endian, ADDR_SIZE, sechdrs[0].sh_size);
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} else {
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info->num_sections = hdr->e_shnum;
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}
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if (hdr->e_shstrndx == SHN_XINDEX)
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info->secindex_strings =
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TO_NATIVE(endian, 32, sechdrs[0].sh_link);
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else
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info->secindex_strings = hdr->e_shstrndx;
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/* Fix endianness in section headers */
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for (i = 0; i < info->num_sections; i++) {
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sechdrs[i].sh_name =
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TO_NATIVE(endian, 32, sechdrs[i].sh_name);
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sechdrs[i].sh_type =
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TO_NATIVE(endian, 32, sechdrs[i].sh_type);
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sechdrs[i].sh_flags =
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TO_NATIVE(endian, 32, sechdrs[i].sh_flags);
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sechdrs[i].sh_addr =
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TO_NATIVE(endian, ADDR_SIZE, sechdrs[i].sh_addr);
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sechdrs[i].sh_offset =
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TO_NATIVE(endian, ADDR_SIZE, sechdrs[i].sh_offset);
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sechdrs[i].sh_size =
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TO_NATIVE(endian, ADDR_SIZE, sechdrs[i].sh_size);
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sechdrs[i].sh_link =
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TO_NATIVE(endian, 32, sechdrs[i].sh_link);
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sechdrs[i].sh_info =
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TO_NATIVE(endian, 32, sechdrs[i].sh_info);
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sechdrs[i].sh_addralign =
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TO_NATIVE(endian, ADDR_SIZE, sechdrs[i].sh_addralign);
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sechdrs[i].sh_entsize =
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TO_NATIVE(endian, ADDR_SIZE, sechdrs[i].sh_entsize);
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}
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/* Find symbol table. */
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for (i = 1; i < info->num_sections; i++) {
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int nobits = sechdrs[i].sh_type == SHT_NOBITS;
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if (!nobits && sechdrs[i].sh_offset > info->size) {
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fprintf(stderr, "%s is truncated. "
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"sechdrs[i].sh_offset=%lu > sizeof(*hrd)=%zu\n",
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filename, (unsigned long)sechdrs[i].sh_offset,
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sizeof(*hdr));
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return 0;
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}
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if (sechdrs[i].sh_type == SHT_SYMTAB) {
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unsigned int sh_link_idx;
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symtab_idx = i;
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info->symtab_start = RTE_PTR_ADD(hdr,
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sechdrs[i].sh_offset);
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info->symtab_stop = RTE_PTR_ADD(hdr,
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sechdrs[i].sh_offset + sechdrs[i].sh_size);
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sh_link_idx = sechdrs[i].sh_link;
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info->strtab = RTE_PTR_ADD(hdr,
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sechdrs[sh_link_idx].sh_offset);
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}
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/* 32bit section no. table? ("more than 64k sections") */
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if (sechdrs[i].sh_type == SHT_SYMTAB_SHNDX) {
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symtab_shndx_idx = i;
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info->symtab_shndx_start = RTE_PTR_ADD(hdr,
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sechdrs[i].sh_offset);
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info->symtab_shndx_stop = RTE_PTR_ADD(hdr,
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sechdrs[i].sh_offset + sechdrs[i].sh_size);
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}
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}
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if (!info->symtab_start)
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fprintf(stderr, "%s has no symtab?\n", filename);
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else {
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/* Fix endianness in symbols */
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for (sym = info->symtab_start; sym < info->symtab_stop; sym++) {
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sym->st_shndx = TO_NATIVE(endian, 16, sym->st_shndx);
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sym->st_name = TO_NATIVE(endian, 32, sym->st_name);
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sym->st_value = TO_NATIVE(endian, ADDR_SIZE, sym->st_value);
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sym->st_size = TO_NATIVE(endian, ADDR_SIZE, sym->st_size);
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}
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}
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if (symtab_shndx_idx != ~0U) {
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Elf32_Word *p;
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if (symtab_idx != sechdrs[symtab_shndx_idx].sh_link)
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fprintf(stderr,
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"%s: SYMTAB_SHNDX has bad sh_link: %u!=%u\n",
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filename, sechdrs[symtab_shndx_idx].sh_link,
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symtab_idx);
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/* Fix endianness */
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for (p = info->symtab_shndx_start; p < info->symtab_shndx_stop;
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p++)
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*p = TO_NATIVE(endian, 32, *p);
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}
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return 1;
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}
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static void parse_elf_finish(struct elf_info *info)
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{
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struct pmd_driver *tmp, *idx = info->drivers;
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release_file(info->hdr, info->size);
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while (idx) {
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tmp = idx->next;
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free(idx);
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idx = tmp;
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}
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}
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struct opt_tag {
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const char *suffix;
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const char *json_id;
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};
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static const struct opt_tag opt_tags[] = {
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{"_param_string_export", "params"},
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{"_kmod_dep_export", "kmod"},
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};
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static int complete_pmd_entry(struct elf_info *info, struct pmd_driver *drv)
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{
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const char *tname;
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int i;
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char tmpsymname[128];
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Elf_Sym *tmpsym;
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drv->name = get_sym_value(info, drv->name_sym);
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for (i = 0; i < PMD_OPT_MAX; i++) {
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memset(tmpsymname, 0, 128);
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sprintf(tmpsymname, "__%s%s", drv->name, opt_tags[i].suffix);
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tmpsym = find_sym_in_symtab(info, tmpsymname, NULL);
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if (!tmpsym)
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continue;
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drv->opt_vals[i] = get_sym_value(info, tmpsym);
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}
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memset(tmpsymname, 0, 128);
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sprintf(tmpsymname, "__%s_pci_tbl_export", drv->name);
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tmpsym = find_sym_in_symtab(info, tmpsymname, NULL);
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/*
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* If this returns NULL, then this is a PMD_VDEV, because
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* it has no pci table reference
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*/
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if (!tmpsym) {
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drv->pci_tbl = NULL;
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return 0;
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}
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tname = get_sym_value(info, tmpsym);
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tmpsym = find_sym_in_symtab(info, tname, NULL);
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if (!tmpsym)
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return -ENOENT;
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drv->pci_tbl = (struct rte_pci_id *)get_sym_value(info, tmpsym);
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if (!drv->pci_tbl)
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return -ENOENT;
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return 0;
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}
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static int locate_pmd_entries(struct elf_info *info)
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{
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Elf_Sym *last = NULL;
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struct pmd_driver *new;
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info->drivers = NULL;
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do {
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new = calloc(sizeof(struct pmd_driver), 1);
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if (new == NULL) {
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fprintf(stderr, "Failed to calloc memory\n");
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return -1;
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}
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new->name_sym = find_sym_in_symtab(info, "this_pmd_name", last);
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last = new->name_sym;
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if (!new->name_sym)
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free(new);
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else {
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if (complete_pmd_entry(info, new)) {
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fprintf(stderr,
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"Failed to complete pmd entry\n");
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free(new);
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} else {
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new->next = info->drivers;
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info->drivers = new;
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}
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}
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} while (last);
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return 0;
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}
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static void output_pmd_info_string(struct elf_info *info, char *outfile)
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{
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FILE *ofd;
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struct pmd_driver *drv;
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struct rte_pci_id *pci_ids;
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int idx = 0;
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if (use_stdout)
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ofd = stdout;
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else {
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ofd = fopen(outfile, "w+");
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if (!ofd) {
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fprintf(stderr, "Unable to open output file\n");
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return;
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}
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}
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drv = info->drivers;
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while (drv) {
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fprintf(ofd, "const char %s_pmd_info[] __attribute__((used)) = "
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"\"PMD_INFO_STRING= {",
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drv->name);
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fprintf(ofd, "\\\"name\\\" : \\\"%s\\\", ", drv->name);
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for (idx = 0; idx < PMD_OPT_MAX; idx++) {
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if (drv->opt_vals[idx])
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fprintf(ofd, "\\\"%s\\\" : \\\"%s\\\", ",
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opt_tags[idx].json_id,
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drv->opt_vals[idx]);
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}
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pci_ids = drv->pci_tbl;
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fprintf(ofd, "\\\"pci_ids\\\" : [");
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while (pci_ids && pci_ids->device_id) {
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fprintf(ofd, "[%d, %d, %d, %d]",
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pci_ids->vendor_id, pci_ids->device_id,
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pci_ids->subsystem_vendor_id,
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pci_ids->subsystem_device_id);
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pci_ids++;
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if (pci_ids->device_id)
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fprintf(ofd, ",");
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else
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fprintf(ofd, " ");
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}
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fprintf(ofd, "]}\";\n");
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drv = drv->next;
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}
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fclose(ofd);
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}
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int main(int argc, char **argv)
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{
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struct elf_info info = {0};
|
||||
int rc = 1;
|
||||
|
||||
if (argc < 3) {
|
||||
fprintf(stderr,
|
||||
"usage: %s <object file> <c output file>\n",
|
||||
basename(argv[0]));
|
||||
exit(127);
|
||||
}
|
||||
use_stdin = !strcmp(argv[1], "-");
|
||||
use_stdout = !strcmp(argv[2], "-");
|
||||
parse_elf(&info, argv[1]);
|
||||
|
||||
if (locate_pmd_entries(&info) < 0)
|
||||
exit(1);
|
||||
|
||||
if (info.drivers) {
|
||||
output_pmd_info_string(&info, argv[2]);
|
||||
rc = 0;
|
||||
} else {
|
||||
fprintf(stderr, "No drivers registered\n");
|
||||
}
|
||||
|
||||
parse_elf_finish(&info);
|
||||
exit(rc);
|
||||
}
|
||||
@ -1,119 +0,0 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0
|
||||
* Postprocess pmd object files to export hw support
|
||||
*
|
||||
* Copyright 2016 Neil Horman <nhorman@tuxdriver.com>
|
||||
* Based in part on modpost.c from the linux kernel
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdarg.h>
|
||||
#include <string.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/mman.h>
|
||||
#ifdef __linux__
|
||||
#include <endian.h>
|
||||
#else
|
||||
#include <sys/endian.h>
|
||||
#endif
|
||||
#include <fcntl.h>
|
||||
#include <unistd.h>
|
||||
#include <elf.h>
|
||||
#include <rte_pci.h>
|
||||
|
||||
/* On BSD-alike OSes elf.h defines these according to host's word size */
|
||||
#undef ELF_ST_BIND
|
||||
#undef ELF_ST_TYPE
|
||||
#undef ELF_R_SYM
|
||||
#undef ELF_R_TYPE
|
||||
|
||||
/*
|
||||
* Define ELF64_* to ELF_*, the latter being defined in both 32 and 64 bit
|
||||
* flavors in elf.h. This makes our code a bit more generic between arches
|
||||
* and allows us to support 32 bit code in the future should we ever want to
|
||||
*/
|
||||
#ifdef RTE_ARCH_64
|
||||
#define Elf_Ehdr Elf64_Ehdr
|
||||
#define Elf_Shdr Elf64_Shdr
|
||||
#define Elf_Sym Elf64_Sym
|
||||
#define Elf_Addr Elf64_Addr
|
||||
#define Elf_Sword Elf64_Sxword
|
||||
#define Elf_Section Elf64_Half
|
||||
#define ELF_ST_BIND ELF64_ST_BIND
|
||||
#define ELF_ST_TYPE ELF64_ST_TYPE
|
||||
|
||||
#define Elf_Rel Elf64_Rel
|
||||
#define Elf_Rela Elf64_Rela
|
||||
#define ELF_R_SYM ELF64_R_SYM
|
||||
#define ELF_R_TYPE ELF64_R_TYPE
|
||||
#else
|
||||
#define Elf_Ehdr Elf32_Ehdr
|
||||
#define Elf_Shdr Elf32_Shdr
|
||||
#define Elf_Sym Elf32_Sym
|
||||
#define Elf_Addr Elf32_Addr
|
||||
#define Elf_Sword Elf32_Sxword
|
||||
#define Elf_Section Elf32_Half
|
||||
#define ELF_ST_BIND ELF32_ST_BIND
|
||||
#define ELF_ST_TYPE ELF32_ST_TYPE
|
||||
|
||||
#define Elf_Rel Elf32_Rel
|
||||
#define Elf_Rela Elf32_Rela
|
||||
#define ELF_R_SYM ELF32_R_SYM
|
||||
#define ELF_R_TYPE ELF32_R_TYPE
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* Note, it seems odd that we have both a CONVERT_NATIVE and a TO_NATIVE macro
|
||||
* below. We do this because the values passed to TO_NATIVE may themselves be
|
||||
* macros and need both macros here to get expanded. Specifically its the width
|
||||
* variable we are concerned with, because it needs to get expanded prior to
|
||||
* string concatenation
|
||||
*/
|
||||
#define CONVERT_NATIVE(fend, width, x) ({ \
|
||||
typeof(x) ___x; \
|
||||
if ((fend) == ELFDATA2LSB) \
|
||||
___x = le##width##toh(x); \
|
||||
else \
|
||||
___x = be##width##toh(x); \
|
||||
___x; \
|
||||
})
|
||||
|
||||
#define TO_NATIVE(fend, width, x) CONVERT_NATIVE(fend, width, x)
|
||||
|
||||
enum opt_params {
|
||||
PMD_PARAM_STRING = 0,
|
||||
PMD_KMOD_DEP,
|
||||
PMD_OPT_MAX
|
||||
};
|
||||
|
||||
struct pmd_driver {
|
||||
Elf_Sym *name_sym;
|
||||
const char *name;
|
||||
struct rte_pci_id *pci_tbl;
|
||||
struct pmd_driver *next;
|
||||
|
||||
const char *opt_vals[PMD_OPT_MAX];
|
||||
};
|
||||
|
||||
struct elf_info {
|
||||
unsigned long size;
|
||||
Elf_Ehdr *hdr;
|
||||
Elf_Shdr *sechdrs;
|
||||
Elf_Sym *symtab_start;
|
||||
Elf_Sym *symtab_stop;
|
||||
char *strtab;
|
||||
|
||||
/* support for 32bit section numbers */
|
||||
|
||||
unsigned int num_sections; /* max_secindex + 1 */
|
||||
unsigned int secindex_strings;
|
||||
/* if Nth symbol table entry has .st_shndx = SHN_XINDEX,
|
||||
* take shndx from symtab_shndx_start[N] instead
|
||||
*/
|
||||
Elf32_Word *symtab_shndx_start;
|
||||
Elf32_Word *symtab_shndx_stop;
|
||||
|
||||
struct pmd_driver *drivers;
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user