5a75cc3c88
Error observed with gcc 11 under development
gcc (GCC) 11.0.0 20200920 (experimental)
build error:
In file included from ../buildtools/pmdinfogen/pmdinfogen.c:17:
../buildtools/pmdinfogen/pmdinfogen.c: In function ‘parse_elf’:
../buildtools/pmdinfogen/pmdinfogen.h:78:1:
warning: this ‘else’ clause does not guard...
[-Wmisleading-indentation]
78 | else \
| ^~~~
../buildtools/pmdinfogen/pmdinfogen.h:83:35:
note: in expansion of macro ‘CONVERT_NATIVE’
83 | #define TO_NATIVE(fend, width, x) CONVERT_NATIVE(fend, width, x)
| ^~~~~~~~~~~~~~
../buildtools/pmdinfogen/pmdinfogen.c:152:28:
note: in expansion of macro ‘TO_NATIVE’
152 | hdr->e_type = TO_NATIVE(endian, 16, hdr->e_type);
| ^~~~~~~~~
../buildtools/pmdinfogen/pmdinfogen.h:80:9:
note: ...this statement, but the latter is misleadingly indented
as if it were guarded by the ‘else’
80 | ___x; \
| ^~~~
Fixes: 98b0fdb0ffc6 ("pmdinfogen: add buildtools and pmdinfogen utility")
Cc: stable@dpdk.org
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
/* 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 <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#ifdef __linux__
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#include <endian.h>
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#else
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#include <sys/endian.h>
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#endif
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#include <fcntl.h>
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#include <unistd.h>
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#include <elf.h>
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#include <rte_pci.h>
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/* On BSD-alike OSes elf.h defines these according to host's word size */
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#undef ELF_ST_BIND
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#undef ELF_ST_TYPE
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#undef ELF_R_SYM
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#undef ELF_R_TYPE
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/*
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* Define ELF64_* to ELF_*, the latter being defined in both 32 and 64 bit
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* flavors in elf.h. This makes our code a bit more generic between arches
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* and allows us to support 32 bit code in the future should we ever want to
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*/
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#ifdef RTE_ARCH_64
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#define Elf_Ehdr Elf64_Ehdr
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#define Elf_Shdr Elf64_Shdr
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#define Elf_Sym Elf64_Sym
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#define Elf_Addr Elf64_Addr
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#define Elf_Sword Elf64_Sxword
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#define Elf_Section Elf64_Half
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#define ELF_ST_BIND ELF64_ST_BIND
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#define ELF_ST_TYPE ELF64_ST_TYPE
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#define Elf_Rel Elf64_Rel
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#define Elf_Rela Elf64_Rela
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#define ELF_R_SYM ELF64_R_SYM
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#define ELF_R_TYPE ELF64_R_TYPE
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#else
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#define Elf_Ehdr Elf32_Ehdr
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#define Elf_Shdr Elf32_Shdr
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#define Elf_Sym Elf32_Sym
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#define Elf_Addr Elf32_Addr
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#define Elf_Sword Elf32_Sxword
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#define Elf_Section Elf32_Half
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#define ELF_ST_BIND ELF32_ST_BIND
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#define ELF_ST_TYPE ELF32_ST_TYPE
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#define Elf_Rel Elf32_Rel
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#define Elf_Rela Elf32_Rela
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#define ELF_R_SYM ELF32_R_SYM
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#define ELF_R_TYPE ELF32_R_TYPE
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#endif
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/*
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* Note, it seems odd that we have both a CONVERT_NATIVE and a TO_NATIVE macro
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* below. We do this because the values passed to TO_NATIVE may themselves be
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* macros and need both macros here to get expanded. Specifically its the width
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* variable we are concerned with, because it needs to get expanded prior to
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* string concatenation
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*/
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#define CONVERT_NATIVE(fend, width, x) ({ \
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typeof(x) ___x; \
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if ((fend) == ELFDATA2LSB) \
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___x = le##width##toh(x); \
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else \
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___x = be##width##toh(x); \
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___x; \
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})
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#define TO_NATIVE(fend, width, x) CONVERT_NATIVE(fend, width, x)
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enum opt_params {
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PMD_PARAM_STRING = 0,
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PMD_KMOD_DEP,
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PMD_OPT_MAX
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};
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struct pmd_driver {
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Elf_Sym *name_sym;
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const char *name;
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struct rte_pci_id *pci_tbl;
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struct pmd_driver *next;
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const char *opt_vals[PMD_OPT_MAX];
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};
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struct elf_info {
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unsigned long size;
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Elf_Ehdr *hdr;
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Elf_Shdr *sechdrs;
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Elf_Sym *symtab_start;
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Elf_Sym *symtab_stop;
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char *strtab;
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/* support for 32bit section numbers */
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unsigned int num_sections; /* max_secindex + 1 */
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unsigned int secindex_strings;
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/* if Nth symbol table entry has .st_shndx = SHN_XINDEX,
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* take shndx from symtab_shndx_start[N] instead
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*/
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Elf32_Word *symtab_shndx_start;
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Elf32_Word *symtab_shndx_stop;
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struct pmd_driver *drivers;
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};
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