diff options
Diffstat (limited to 'scripts/mod/modpost.c')
| -rw-r--r-- | scripts/mod/modpost.c | 58 |
1 files changed, 44 insertions, 14 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 8247979e8f6..99a45fdc1bb 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -17,6 +17,7 @@ #include <string.h> #include <limits.h> #include <stdbool.h> +#include <errno.h> #include "modpost.h" #include "../../include/generated/autoconf.h" #include "../../include/linux/license.h" @@ -37,6 +38,8 @@ static int warn_unresolved = 0; /* How a symbol is exported */ static int sec_mismatch_count = 0; static int sec_mismatch_verbose = 1; +/* ignore missing files */ +static int ignore_missing_files; enum export { export_plain, export_unused, export_gpl, @@ -161,7 +164,7 @@ struct symbol { unsigned int vmlinux:1; /* 1 if symbol is defined in vmlinux */ unsigned int kernel:1; /* 1 if symbol is from kernel * (only for external modules) **/ - unsigned int preloaded:1; /* 1 if symbol from Module.symvers */ + unsigned int preloaded:1; /* 1 if symbol from Module.symvers, or crc */ enum export export; /* Type of export */ char name[0]; }; @@ -329,8 +332,11 @@ static void sym_update_crc(const char *name, struct module *mod, { struct symbol *s = find_symbol(name); - if (!s) + if (!s) { s = new_symbol(name, mod, export); + /* Don't complain when we find it later. */ + s->preloaded = 1; + } s->crc = crc; s->crc_valid = 1; } @@ -407,6 +413,11 @@ static int parse_elf(struct elf_info *info, const char *filename) hdr = grab_file(filename, &info->size); if (!hdr) { + if (ignore_missing_files) { + fprintf(stderr, "%s: %s (ignored)\n", filename, + strerror(errno)); + return 0; + } perror(filename); exit(1); } @@ -573,12 +584,16 @@ static int ignore_undef_symbol(struct elf_info *info, const char *symname) if (strncmp(symname, "_restgpr_", sizeof("_restgpr_") - 1) == 0 || strncmp(symname, "_savegpr_", sizeof("_savegpr_") - 1) == 0 || strncmp(symname, "_rest32gpr_", sizeof("_rest32gpr_") - 1) == 0 || - strncmp(symname, "_save32gpr_", sizeof("_save32gpr_") - 1) == 0) + strncmp(symname, "_save32gpr_", sizeof("_save32gpr_") - 1) == 0 || + strncmp(symname, "_restvr_", sizeof("_restvr_") - 1) == 0 || + strncmp(symname, "_savevr_", sizeof("_savevr_") - 1) == 0) return 1; if (info->hdr->e_machine == EM_PPC64) /* Special register function linked on all modules during final link of .ko */ if (strncmp(symname, "_restgpr0_", sizeof("_restgpr0_") - 1) == 0 || - strncmp(symname, "_savegpr0_", sizeof("_savegpr0_") - 1) == 0) + strncmp(symname, "_savegpr0_", sizeof("_savegpr0_") - 1) == 0 || + strncmp(symname, "_restvr_", sizeof("_restvr_") - 1) == 0 || + strncmp(symname, "_savevr_", sizeof("_savevr_") - 1) == 0) return 1; /* Do not ignore this symbol */ return 0; @@ -599,18 +614,17 @@ static void handle_modversions(struct module *mod, struct elf_info *info, else export = export_from_sec(info, get_secindex(info, sym)); + /* CRC'd symbol */ + if (strncmp(symname, CRC_PFX, strlen(CRC_PFX)) == 0) { + crc = (unsigned int) sym->st_value; + sym_update_crc(symname + strlen(CRC_PFX), mod, crc, + export); + } + switch (sym->st_shndx) { case SHN_COMMON: warn("\"%s\" [%s] is COMMON symbol\n", symname, mod->name); break; - case SHN_ABS: - /* CRC'd symbol */ - if (strncmp(symname, CRC_PFX, strlen(CRC_PFX)) == 0) { - crc = (unsigned int) sym->st_value; - sym_update_crc(symname + strlen(CRC_PFX), mod, crc, - export); - } - break; case SHN_UNDEF: /* undefined symbol */ if (ELF_ST_BIND(sym->st_info) != STB_GLOBAL && @@ -1488,6 +1502,16 @@ static int addend_386_rel(struct elf_info *elf, Elf_Shdr *sechdr, Elf_Rela *r) #define R_ARM_JUMP24 29 #endif +#ifndef R_ARM_THM_CALL +#define R_ARM_THM_CALL 10 +#endif +#ifndef R_ARM_THM_JUMP24 +#define R_ARM_THM_JUMP24 30 +#endif +#ifndef R_ARM_THM_JUMP19 +#define R_ARM_THM_JUMP19 51 +#endif + static int addend_arm_rel(struct elf_info *elf, Elf_Shdr *sechdr, Elf_Rela *r) { unsigned int r_typ = ELF_R_TYPE(r->r_info); @@ -1501,6 +1525,9 @@ static int addend_arm_rel(struct elf_info *elf, Elf_Shdr *sechdr, Elf_Rela *r) case R_ARM_PC24: case R_ARM_CALL: case R_ARM_JUMP24: + case R_ARM_THM_CALL: + case R_ARM_THM_JUMP24: + case R_ARM_THM_JUMP19: /* From ARM ABI: ((S + A) | T) - P */ r->r_addend = (int)(long)(elf->hdr + sechdr->sh_offset + @@ -1853,7 +1880,7 @@ static void add_header(struct buffer *b, struct module *mod) buf_printf(b, "\n"); buf_printf(b, "MODULE_INFO(vermagic, VERMAGIC_STRING);\n"); buf_printf(b, "\n"); - buf_printf(b, "struct module __this_module\n"); + buf_printf(b, "__visible struct module __this_module\n"); buf_printf(b, "__attribute__((section(\".gnu.linkonce.this_module\"))) = {\n"); buf_printf(b, "\t.name = KBUILD_MODNAME,\n"); if (mod->has_init) @@ -2119,7 +2146,7 @@ int main(int argc, char **argv) struct ext_sym_list *extsym_iter; struct ext_sym_list *extsym_start = NULL; - while ((opt = getopt(argc, argv, "i:I:e:msST:o:awM:K:")) != -1) { + while ((opt = getopt(argc, argv, "i:I:e:mnsST:o:awM:K:")) != -1) { switch (opt) { case 'i': kernel_read = optarg; @@ -2139,6 +2166,9 @@ int main(int argc, char **argv) case 'm': modversions = 1; break; + case 'n': + ignore_missing_files = 1; + break; case 'o': dump_write = optarg; break; |