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author | Paul Mundt <lethal@linux-sh.org> | 2011-01-13 15:06:28 +0900 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2011-01-13 15:06:28 +0900 |
commit | f43dc23d5ea91fca257be02138a255f02d98e806 (patch) | |
tree | b29722f6e965316e90ac97abf79923ced250dc21 /scripts/mod | |
parent | f8e53553f452dcbf67cb89c8cba63a1cd6eb4cc0 (diff) | |
parent | 4162cf64973df51fc885825bc9ca4d055891c49f (diff) | |
download | kernel_goldelico_gta04-f43dc23d5ea91fca257be02138a255f02d98e806.zip kernel_goldelico_gta04-f43dc23d5ea91fca257be02138a255f02d98e806.tar.gz kernel_goldelico_gta04-f43dc23d5ea91fca257be02138a255f02d98e806.tar.bz2 |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 into common/serial-rework
Conflicts:
arch/sh/kernel/cpu/sh2/setup-sh7619.c
arch/sh/kernel/cpu/sh2a/setup-mxg.c
arch/sh/kernel/cpu/sh2a/setup-sh7201.c
arch/sh/kernel/cpu/sh2a/setup-sh7203.c
arch/sh/kernel/cpu/sh2a/setup-sh7206.c
arch/sh/kernel/cpu/sh3/setup-sh7705.c
arch/sh/kernel/cpu/sh3/setup-sh770x.c
arch/sh/kernel/cpu/sh3/setup-sh7710.c
arch/sh/kernel/cpu/sh3/setup-sh7720.c
arch/sh/kernel/cpu/sh4/setup-sh4-202.c
arch/sh/kernel/cpu/sh4/setup-sh7750.c
arch/sh/kernel/cpu/sh4/setup-sh7760.c
arch/sh/kernel/cpu/sh4a/setup-sh7343.c
arch/sh/kernel/cpu/sh4a/setup-sh7366.c
arch/sh/kernel/cpu/sh4a/setup-sh7722.c
arch/sh/kernel/cpu/sh4a/setup-sh7723.c
arch/sh/kernel/cpu/sh4a/setup-sh7724.c
arch/sh/kernel/cpu/sh4a/setup-sh7763.c
arch/sh/kernel/cpu/sh4a/setup-sh7770.c
arch/sh/kernel/cpu/sh4a/setup-sh7780.c
arch/sh/kernel/cpu/sh4a/setup-sh7785.c
arch/sh/kernel/cpu/sh4a/setup-sh7786.c
arch/sh/kernel/cpu/sh4a/setup-shx3.c
arch/sh/kernel/cpu/sh5/setup-sh5.c
drivers/serial/sh-sci.c
drivers/serial/sh-sci.h
include/linux/serial_sci.h
Diffstat (limited to 'scripts/mod')
-rw-r--r-- | scripts/mod/Makefile | 2 | ||||
-rw-r--r-- | scripts/mod/file2alias.c | 173 | ||||
-rw-r--r-- | scripts/mod/mk_elfconfig.c | 9 | ||||
-rw-r--r-- | scripts/mod/modpost.c | 521 | ||||
-rw-r--r-- | scripts/mod/modpost.h | 46 | ||||
-rw-r--r-- | scripts/mod/sumversion.c | 2 |
6 files changed, 445 insertions, 308 deletions
diff --git a/scripts/mod/Makefile b/scripts/mod/Makefile index 11d69c3..ff954f8 100644 --- a/scripts/mod/Makefile +++ b/scripts/mod/Makefile @@ -8,7 +8,7 @@ modpost-objs := modpost.o file2alias.o sumversion.o $(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o: $(obj)/elfconfig.h quiet_cmd_elfconfig = MKELF $@ - cmd_elfconfig = $(obj)/mk_elfconfig $(ARCH) < $< > $@ + cmd_elfconfig = $(obj)/mk_elfconfig < $< > $@ $(obj)/elfconfig.h: $(obj)/empty.o $(obj)/mk_elfconfig FORCE $(call if_changed,elfconfig) diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index 40e0045..88f3f07 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -104,7 +104,7 @@ static void device_id_check(const char *modname, const char *device_id, static void do_usb_entry(struct usb_device_id *id, unsigned int bcdDevice_initial, int bcdDevice_initial_digits, unsigned char range_lo, unsigned char range_hi, - struct module *mod) + unsigned char max, struct module *mod) { char alias[500]; strcpy(alias, "usb:"); @@ -118,9 +118,22 @@ static void do_usb_entry(struct usb_device_id *id, sprintf(alias + strlen(alias), "%0*X", bcdDevice_initial_digits, bcdDevice_initial); if (range_lo == range_hi) - sprintf(alias + strlen(alias), "%u", range_lo); - else if (range_lo > 0 || range_hi < 9) - sprintf(alias + strlen(alias), "[%u-%u]", range_lo, range_hi); + sprintf(alias + strlen(alias), "%X", range_lo); + else if (range_lo > 0 || range_hi < max) { + if (range_lo > 0x9 || range_hi < 0xA) + sprintf(alias + strlen(alias), + "[%X-%X]", + range_lo, + range_hi); + else { + sprintf(alias + strlen(alias), + range_lo < 0x9 ? "[%X-9" : "[%X", + range_lo); + sprintf(alias + strlen(alias), + range_hi > 0xA ? "a-%X]" : "%X]", + range_lo); + } + } if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1)) strcat(alias, "*"); @@ -147,10 +160,49 @@ static void do_usb_entry(struct usb_device_id *id, "MODULE_ALIAS(\"%s\");\n", alias); } +/* Handles increment/decrement of BCD formatted integers */ +/* Returns the previous value, so it works like i++ or i-- */ +static unsigned int incbcd(unsigned int *bcd, + int inc, + unsigned char max, + size_t chars) +{ + unsigned int init = *bcd, i, j; + unsigned long long c, dec = 0; + + /* If bcd is not in BCD format, just increment */ + if (max > 0x9) { + *bcd += inc; + return init; + } + + /* Convert BCD to Decimal */ + for (i=0 ; i < chars ; i++) { + c = (*bcd >> (i << 2)) & 0xf; + c = c > 9 ? 9 : c; /* force to bcd just in case */ + for (j=0 ; j < i ; j++) + c = c * 10; + dec += c; + } + + /* Do our increment/decrement */ + dec += inc; + *bcd = 0; + + /* Convert back to BCD */ + for (i=0 ; i < chars ; i++) { + for (c=1,j=0 ; j < i ; j++) + c = c * 10; + c = (dec / c) % 10; + *bcd += c << (i << 2); + } + return init; +} + static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod) { unsigned int devlo, devhi; - unsigned char chi, clo; + unsigned char chi, clo, max; int ndigits; id->match_flags = TO_NATIVE(id->match_flags); @@ -162,6 +214,17 @@ static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod) devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ? TO_NATIVE(id->bcdDevice_hi) : ~0x0U; + /* Figure out if this entry is in bcd or hex format */ + max = 0x9; /* Default to decimal format */ + for (ndigits = 0 ; ndigits < sizeof(id->bcdDevice_lo) * 2 ; ndigits++) { + clo = (devlo >> (ndigits << 2)) & 0xf; + chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf; + if (clo > max || chi > max) { + max = 0xf; + break; + } + } + /* * Some modules (visor) have empty slots as placeholder for * run-time specification that results in catch-all alias @@ -173,21 +236,27 @@ static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod) for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) { clo = devlo & 0xf; chi = devhi & 0xf; - if (chi > 9) /* it's bcd not hex */ - chi = 9; + if (chi > max) /* If we are in bcd mode, truncate if necessary */ + chi = max; devlo >>= 4; devhi >>= 4; if (devlo == devhi || !ndigits) { - do_usb_entry(id, devlo, ndigits, clo, chi, mod); + do_usb_entry(id, devlo, ndigits, clo, chi, max, mod); break; } - if (clo > 0) - do_usb_entry(id, devlo++, ndigits, clo, 9, mod); - - if (chi < 9) - do_usb_entry(id, devhi--, ndigits, 0, chi, mod); + if (clo > 0x0) + do_usb_entry(id, + incbcd(&devlo, 1, max, + sizeof(id->bcdDevice_lo) * 2), + ndigits, clo, max, max, mod); + + if (chi < max) + do_usb_entry(id, + incbcd(&devhi, -1, max, + sizeof(id->bcdDevice_lo) * 2), + ndigits, 0x0, chi, max, mod); } } @@ -657,6 +726,15 @@ static int do_i2c_entry(const char *filename, struct i2c_device_id *id, return 1; } +/* Looks like: spi:S */ +static int do_spi_entry(const char *filename, struct spi_device_id *id, + char *alias) +{ + sprintf(alias, SPI_MODULE_PREFIX "%s", id->name); + + return 1; +} + static const struct dmifield { const char *prefix; int field; @@ -718,6 +796,51 @@ static int do_platform_entry(const char *filename, return 1; } +static int do_mdio_entry(const char *filename, + struct mdio_device_id *id, char *alias) +{ + int i; + + alias += sprintf(alias, MDIO_MODULE_PREFIX); + + for (i = 0; i < 32; i++) { + if (!((id->phy_id_mask >> (31-i)) & 1)) + *(alias++) = '?'; + else if ((id->phy_id >> (31-i)) & 1) + *(alias++) = '1'; + else + *(alias++) = '0'; + } + + /* Terminate the string */ + *alias = 0; + + return 1; +} + +/* Looks like: zorro:iN. */ +static int do_zorro_entry(const char *filename, struct zorro_device_id *id, + char *alias) +{ + id->id = TO_NATIVE(id->id); + strcpy(alias, "zorro:"); + ADD(alias, "i", id->id != ZORRO_WILDCARD, id->id); + return 1; +} + +/* looks like: "pnp:dD" */ +static int do_isapnp_entry(const char *filename, + struct isapnp_device_id *id, char *alias) +{ + sprintf(alias, "pnp:d%c%c%c%x%x%x%x*", + 'A' + ((id->vendor >> 2) & 0x3f) - 1, + 'A' + (((id->vendor & 3) << 3) | ((id->vendor >> 13) & 7)) - 1, + 'A' + ((id->vendor >> 8) & 0x1f) - 1, + (id->function >> 4) & 0x0f, id->function & 0x0f, + (id->function >> 12) & 0x0f, (id->function >> 8) & 0x0f); + return 1; +} + /* Ignore any prefix, eg. some architectures prepend _ */ static inline int sym_is(const char *symbol, const char *name) { @@ -726,7 +849,7 @@ static inline int sym_is(const char *symbol, const char *name) match = strstr(symbol, name); if (!match) return 0; - return match[strlen(symbol)] == '\0'; + return match[strlen(name)] == '\0'; } static void do_table(void *symval, unsigned long size, @@ -761,16 +884,16 @@ void handle_moddevtable(struct module *mod, struct elf_info *info, char *zeros = NULL; /* We're looking for a section relative symbol */ - if (!sym->st_shndx || sym->st_shndx >= info->hdr->e_shnum) + if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections) return; /* Handle all-NULL symbols allocated into .bss */ - if (info->sechdrs[sym->st_shndx].sh_type & SHT_NOBITS) { + if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) { zeros = calloc(1, sym->st_size); symval = zeros; } else { symval = (void *)info->hdr - + info->sechdrs[sym->st_shndx].sh_offset + + info->sechdrs[get_secindex(info, sym)].sh_offset + sym->st_value; } @@ -853,6 +976,10 @@ void handle_moddevtable(struct module *mod, struct elf_info *info, do_table(symval, sym->st_size, sizeof(struct i2c_device_id), "i2c", do_i2c_entry, mod); + else if (sym_is(symname, "__mod_spi_device_table")) + do_table(symval, sym->st_size, + sizeof(struct spi_device_id), "spi", + do_spi_entry, mod); else if (sym_is(symname, "__mod_dmi_device_table")) do_table(symval, sym->st_size, sizeof(struct dmi_system_id), "dmi", @@ -861,6 +988,18 @@ void handle_moddevtable(struct module *mod, struct elf_info *info, do_table(symval, sym->st_size, sizeof(struct platform_device_id), "platform", do_platform_entry, mod); + else if (sym_is(symname, "__mod_mdio_device_table")) + do_table(symval, sym->st_size, + sizeof(struct mdio_device_id), "mdio", + do_mdio_entry, mod); + else if (sym_is(symname, "__mod_zorro_device_table")) + do_table(symval, sym->st_size, + sizeof(struct zorro_device_id), "zorro", + do_zorro_entry, mod); + else if (sym_is(symname, "__mod_isapnp_device_table")) + do_table(symval, sym->st_size, + sizeof(struct isapnp_device_id), "isa", + do_isapnp_entry, mod); free(zeros); } diff --git a/scripts/mod/mk_elfconfig.c b/scripts/mod/mk_elfconfig.c index 6a96d47..639bca7 100644 --- a/scripts/mod/mk_elfconfig.c +++ b/scripts/mod/mk_elfconfig.c @@ -9,9 +9,6 @@ main(int argc, char **argv) unsigned char ei[EI_NIDENT]; union { short s; char c[2]; } endian_test; - if (argc != 2) { - fprintf(stderr, "Error: no arch\n"); - } if (fread(ei, 1, EI_NIDENT, stdin) != EI_NIDENT) { fprintf(stderr, "Error: input truncated\n"); return 1; @@ -55,12 +52,6 @@ main(int argc, char **argv) else exit(1); - if ((strcmp(argv[1], "h8300") == 0) - || (strcmp(argv[1], "blackfin") == 0)) - printf("#define MODULE_SYMBOL_PREFIX \"_\"\n"); - else - printf("#define MODULE_SYMBOL_PREFIX \"\"\n"); - return 0; } diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 4522948..97d2259 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -14,9 +14,19 @@ #define _GNU_SOURCE #include <stdio.h> #include <ctype.h> +#include <string.h> #include "modpost.h" +#include "../../include/generated/autoconf.h" #include "../../include/linux/license.h" +/* Some toolchains use a `_' prefix for all user symbols. */ +#ifdef CONFIG_SYMBOL_PREFIX +#define MODULE_SYMBOL_PREFIX CONFIG_SYMBOL_PREFIX +#else +#define MODULE_SYMBOL_PREFIX "" +#endif + + /* Are we using CONFIG_MODVERSIONS? */ int modversions = 0; /* Warn about undefined symbols? (do so if we have vmlinux) */ @@ -244,7 +254,7 @@ static enum export export_no(const char *s) return export_unknown; } -static enum export export_from_sec(struct elf_info *elf, Elf_Section sec) +static enum export export_from_sec(struct elf_info *elf, unsigned int sec) { if (sec == elf->export_sec) return export_plain; @@ -364,6 +374,8 @@ static int parse_elf(struct elf_info *info, const char *filename) Elf_Ehdr *hdr; Elf_Shdr *sechdrs; Elf_Sym *sym; + const char *secstrings; + unsigned int symtab_idx = ~0U, symtab_shndx_idx = ~0U; hdr = grab_file(filename, &info->size); if (!hdr) { @@ -408,8 +420,27 @@ static int parse_elf(struct elf_info *info, const char *filename) return 0; } + if (hdr->e_shnum == 0) { + /* + * There are more than 64k sections, + * read count from .sh_size. + * note: it doesn't need shndx2secindex() + */ + info->num_sections = TO_NATIVE(sechdrs[0].sh_size); + } + else { + info->num_sections = hdr->e_shnum; + } + if (hdr->e_shstrndx == SHN_XINDEX) { + info->secindex_strings = + shndx2secindex(TO_NATIVE(sechdrs[0].sh_link)); + } + else { + info->secindex_strings = hdr->e_shstrndx; + } + /* Fix endianness in section headers */ - for (i = 0; i < hdr->e_shnum; i++) { + for (i = 0; i < info->num_sections; i++) { sechdrs[i].sh_name = TO_NATIVE(sechdrs[i].sh_name); sechdrs[i].sh_type = TO_NATIVE(sechdrs[i].sh_type); sechdrs[i].sh_flags = TO_NATIVE(sechdrs[i].sh_flags); @@ -422,9 +453,8 @@ static int parse_elf(struct elf_info *info, const char *filename) sechdrs[i].sh_entsize = TO_NATIVE(sechdrs[i].sh_entsize); } /* Find symbol table. */ - for (i = 1; i < hdr->e_shnum; i++) { - const char *secstrings - = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; + secstrings = (void *)hdr + sechdrs[info->secindex_strings].sh_offset; + for (i = 1; i < info->num_sections; i++) { const char *secname; int nobits = sechdrs[i].sh_type == SHT_NOBITS; @@ -451,17 +481,27 @@ static int parse_elf(struct elf_info *info, const char *filename) info->export_unused_gpl_sec = i; else if (strcmp(secname, "__ksymtab_gpl_future") == 0) info->export_gpl_future_sec = i; - else if (strcmp(secname, "__markers_strings") == 0) - info->markers_strings_sec = i; - if (sechdrs[i].sh_type != SHT_SYMTAB) - continue; + if (sechdrs[i].sh_type == SHT_SYMTAB) { + unsigned int sh_link_idx; + symtab_idx = i; + info->symtab_start = (void *)hdr + + sechdrs[i].sh_offset; + info->symtab_stop = (void *)hdr + + sechdrs[i].sh_offset + sechdrs[i].sh_size; + sh_link_idx = shndx2secindex(sechdrs[i].sh_link); + info->strtab = (void *)hdr + + sechdrs[sh_link_idx].sh_offset; + } - info->symtab_start = (void *)hdr + sechdrs[i].sh_offset; - info->symtab_stop = (void *)hdr + sechdrs[i].sh_offset - + sechdrs[i].sh_size; - info->strtab = (void *)hdr + - sechdrs[sechdrs[i].sh_link].sh_offset; + /* 32bit section no. table? ("more than 64k sections") */ + if (sechdrs[i].sh_type == SHT_SYMTAB_SHNDX) { + symtab_shndx_idx = i; + info->symtab_shndx_start = (void *)hdr + + sechdrs[i].sh_offset; + info->symtab_shndx_stop = (void *)hdr + + sechdrs[i].sh_offset + sechdrs[i].sh_size; + } } if (!info->symtab_start) fatal("%s has no symtab?\n", filename); @@ -473,6 +513,21 @@ static int parse_elf(struct elf_info *info, const char *filename) sym->st_value = TO_NATIVE(sym->st_value); sym->st_size = TO_NATIVE(sym->st_size); } + + if (symtab_shndx_idx != ~0U) { + Elf32_Word *p; + if (symtab_idx != + shndx2secindex(sechdrs[symtab_shndx_idx].sh_link)) + fatal("%s: SYMTAB_SHNDX has bad sh_link: %u!=%u\n", + filename, + shndx2secindex(sechdrs[symtab_shndx_idx].sh_link), + symtab_idx); + /* Fix endianness */ + for (p = info->symtab_shndx_start; p < info->symtab_shndx_stop; + p++) + *p = TO_NATIVE(*p); + } + return 1; } @@ -496,6 +551,11 @@ static int ignore_undef_symbol(struct elf_info *info, const char *symname) strncmp(symname, "_rest32gpr_", sizeof("_rest32gpr_") - 1) == 0 || strncmp(symname, "_save32gpr_", sizeof("_save32gpr_") - 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) + return 1; /* Do not ignore this symbol */ return 0; } @@ -507,7 +567,7 @@ static void handle_modversions(struct module *mod, struct elf_info *info, Elf_Sym *sym, const char *symname) { unsigned int crc; - enum export export = export_from_sec(info, sym->st_shndx); + enum export export = export_from_sec(info, get_secindex(info, sym)); switch (sym->st_shndx) { case SHN_COMMON: @@ -515,7 +575,7 @@ static void handle_modversions(struct module *mod, struct elf_info *info, break; case SHN_ABS: /* CRC'd symbol */ - if (memcmp(symname, CRC_PFX, strlen(CRC_PFX)) == 0) { + 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); @@ -559,7 +619,7 @@ static void handle_modversions(struct module *mod, struct elf_info *info, break; default: /* All exported symbols */ - if (memcmp(symname, KSYMTAB_PFX, strlen(KSYMTAB_PFX)) == 0) { + if (strncmp(symname, KSYMTAB_PFX, strlen(KSYMTAB_PFX)) == 0) { sym_add_exported(symname + strlen(KSYMTAB_PFX), mod, export); } @@ -649,19 +709,19 @@ static const char *sym_name(struct elf_info *elf, Elf_Sym *sym) return "(unknown)"; } -static const char *sec_name(struct elf_info *elf, int shndx) +static const char *sec_name(struct elf_info *elf, int secindex) { Elf_Shdr *sechdrs = elf->sechdrs; return (void *)elf->hdr + - elf->sechdrs[elf->hdr->e_shstrndx].sh_offset + - sechdrs[shndx].sh_name; + elf->sechdrs[elf->secindex_strings].sh_offset + + sechdrs[secindex].sh_name; } static const char *sech_name(struct elf_info *elf, Elf_Shdr *sechdr) { return (void *)elf->hdr + - elf->sechdrs[elf->hdr->e_shstrndx].sh_offset + - sechdr->sh_name; + elf->sechdrs[elf->secindex_strings].sh_offset + + sechdr->sh_name; } /* if sym is empty or point to a string @@ -691,7 +751,7 @@ static int number_prefix(const char *sym) * The $ syntax is for sections where ld append a dot number * to make section name unique. */ -int match(const char *sym, const char * const pat[]) +static int match(const char *sym, const char * const pat[]) { const char *p; while (*pat) { @@ -730,6 +790,8 @@ static const char *section_white_list[] = { ".comment*", ".debug*", + ".zdebug*", /* Compressed debug sections. */ + ".GCC-command-line", /* mn10300 */ ".mdebug*", /* alpha, score, mips etc. */ ".pdr", /* alpha, score, mips etc. */ ".stab*", @@ -774,10 +836,13 @@ static void check_section(const char *modname, struct elf_info *elf, #define ALL_EXIT_TEXT_SECTIONS \ ".exit.text$", ".devexit.text$", ".cpuexit.text$", ".memexit.text$" -#define ALL_INIT_SECTIONS INIT_SECTIONS, DEV_INIT_SECTIONS, \ - CPU_INIT_SECTIONS, MEM_INIT_SECTIONS -#define ALL_EXIT_SECTIONS EXIT_SECTIONS, DEV_EXIT_SECTIONS, \ - CPU_EXIT_SECTIONS, MEM_EXIT_SECTIONS +#define ALL_XXXINIT_SECTIONS DEV_INIT_SECTIONS, CPU_INIT_SECTIONS, \ + MEM_INIT_SECTIONS +#define ALL_XXXEXIT_SECTIONS DEV_EXIT_SECTIONS, CPU_EXIT_SECTIONS, \ + MEM_EXIT_SECTIONS + +#define ALL_INIT_SECTIONS INIT_SECTIONS, ALL_XXXINIT_SECTIONS +#define ALL_EXIT_SECTIONS EXIT_SECTIONS, ALL_XXXEXIT_SECTIONS #define DATA_SECTIONS ".data$", ".data.rel$" #define TEXT_SECTIONS ".text$" @@ -807,33 +872,29 @@ static const char *data_sections[] = { DATA_SECTIONS, NULL }; /* symbols in .data that may refer to init/exit sections */ -static const char *symbol_white_list[] = -{ - "*driver", - "*_template", /* scsi uses *_template a lot */ - "*_timer", /* arm uses ops structures named _timer a lot */ - "*_sht", /* scsi also used *_sht to some extent */ - "*_ops", - "*_probe", - "*_probe_one", - "*_console", - NULL -}; +#define DEFAULT_SYMBOL_WHITE_LIST \ + "*driver", \ + "*_template", /* scsi uses *_template a lot */ \ + "*_timer", /* arm uses ops structures named _timer a lot */ \ + "*_sht", /* scsi also used *_sht to some extent */ \ + "*_ops", \ + "*_probe", \ + "*_probe_one", \ + "*_console" static const char *head_sections[] = { ".head.text*", NULL }; static const char *linker_symbols[] = { "__init_begin", "_sinittext", "_einittext", NULL }; enum mismatch { - NO_MISMATCH, - TEXT_TO_INIT, - DATA_TO_INIT, - TEXT_TO_EXIT, - DATA_TO_EXIT, - XXXINIT_TO_INIT, - XXXEXIT_TO_EXIT, - INIT_TO_EXIT, - EXIT_TO_INIT, + TEXT_TO_ANY_INIT, + DATA_TO_ANY_INIT, + TEXT_TO_ANY_EXIT, + DATA_TO_ANY_EXIT, + XXXINIT_TO_SOME_INIT, + XXXEXIT_TO_SOME_EXIT, + ANY_INIT_TO_ANY_EXIT, + ANY_EXIT_TO_ANY_INIT, EXPORT_TO_INIT_EXIT, }; @@ -841,6 +902,7 @@ struct sectioncheck { const char *fromsec[20]; const char *tosec[20]; enum mismatch mismatch; + const char *symbol_white_list[20]; }; const struct sectioncheck sectioncheck[] = { @@ -850,80 +912,103 @@ const struct sectioncheck sectioncheck[] = { { .fromsec = { TEXT_SECTIONS, NULL }, .tosec = { ALL_INIT_SECTIONS, NULL }, - .mismatch = TEXT_TO_INIT, + .mismatch = TEXT_TO_ANY_INIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, }, { .fromsec = { DATA_SECTIONS, NULL }, - .tosec = { ALL_INIT_SECTIONS, NULL }, - .mismatch = DATA_TO_INIT, + .tosec = { ALL_XXXINIT_SECTIONS, NULL }, + .mismatch = DATA_TO_ANY_INIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, +}, +{ + .fromsec = { DATA_SECTIONS, NULL }, + .tosec = { INIT_SECTIONS, NULL }, + .mismatch = DATA_TO_ANY_INIT, + .symbol_white_list = { + "*_template", "*_timer", "*_sht", "*_ops", + "*_probe", "*_probe_one", "*_console", NULL + }, }, { .fromsec = { TEXT_SECTIONS, NULL }, .tosec = { ALL_EXIT_SECTIONS, NULL }, - .mismatch = TEXT_TO_EXIT, + .mismatch = TEXT_TO_ANY_EXIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, }, { .fromsec = { DATA_SECTIONS, NULL }, .tosec = { ALL_EXIT_SECTIONS, NULL }, - .mismatch = DATA_TO_EXIT, + .mismatch = DATA_TO_ANY_EXIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, }, /* Do not reference init code/data from devinit/cpuinit/meminit code/data */ { - .fromsec = { DEV_INIT_SECTIONS, CPU_INIT_SECTIONS, MEM_INIT_SECTIONS, NULL }, + .fromsec = { ALL_XXXINIT_SECTIONS, NULL }, .tosec = { INIT_SECTIONS, NULL }, - .mismatch = XXXINIT_TO_INIT, + .mismatch = XXXINIT_TO_SOME_INIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, }, /* Do not reference cpuinit code/data from meminit code/data */ { .fromsec = { MEM_INIT_SECTIONS, NULL }, .tosec = { CPU_INIT_SECTIONS, NULL }, - .mismatch = XXXINIT_TO_INIT, + .mismatch = XXXINIT_TO_SOME_INIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, }, /* Do not reference meminit code/data from cpuinit code/data */ { .fromsec = { CPU_INIT_SECTIONS, NULL }, .tosec = { MEM_INIT_SECTIONS, NULL }, - .mismatch = XXXINIT_TO_INIT, + .mismatch = XXXINIT_TO_SOME_INIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, }, /* Do not reference exit code/data from devexit/cpuexit/memexit code/data */ { - .fromsec = { DEV_EXIT_SECTIONS, CPU_EXIT_SECTIONS, MEM_EXIT_SECTIONS, NULL }, + .fromsec = { ALL_XXXEXIT_SECTIONS, NULL }, .tosec = { EXIT_SECTIONS, NULL }, - .mismatch = XXXEXIT_TO_EXIT, + .mismatch = XXXEXIT_TO_SOME_EXIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, }, /* Do not reference cpuexit code/data from memexit code/data */ { .fromsec = { MEM_EXIT_SECTIONS, NULL }, .tosec = { CPU_EXIT_SECTIONS, NULL }, - .mismatch = XXXEXIT_TO_EXIT, + .mismatch = XXXEXIT_TO_SOME_EXIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, }, /* Do not reference memexit code/data from cpuexit code/data */ { .fromsec = { CPU_EXIT_SECTIONS, NULL }, .tosec = { MEM_EXIT_SECTIONS, NULL }, - .mismatch = XXXEXIT_TO_EXIT, + .mismatch = XXXEXIT_TO_SOME_EXIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, }, /* Do not use exit code/data from init code */ { .fromsec = { ALL_INIT_SECTIONS, NULL }, .tosec = { ALL_EXIT_SECTIONS, NULL }, - .mismatch = INIT_TO_EXIT, + .mismatch = ANY_INIT_TO_ANY_EXIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, }, /* Do not use init code/data from exit code */ { .fromsec = { ALL_EXIT_SECTIONS, NULL }, .tosec = { ALL_INIT_SECTIONS, NULL }, - .mismatch = EXIT_TO_INIT, + .mismatch = ANY_EXIT_TO_ANY_INIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, }, /* Do not export init/exit functions or data */ { .fromsec = { "__ksymtab*", NULL }, .tosec = { INIT_SECTIONS, EXIT_SECTIONS, NULL }, - .mismatch = EXPORT_TO_INIT_EXIT + .mismatch = EXPORT_TO_INIT_EXIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, } }; -static int section_mismatch(const char *fromsec, const char *tosec) +static const struct sectioncheck *section_mismatch( + const char *fromsec, const char *tosec) { int i; int elems = sizeof(sectioncheck) / sizeof(struct sectioncheck); @@ -932,10 +1017,10 @@ static int section_mismatch(const char *fromsec, const char *tosec) for (i = 0; i < elems; i++) { if (match(fromsec, check->fromsec) && match(tosec, check->tosec)) - return check->mismatch; + return check; check++; } - return NO_MISMATCH; + return NULL; } /** @@ -951,10 +1036,17 @@ static int section_mismatch(const char *fromsec, const char *tosec) * fromsec = .data* * atsym =__param* * + * Pattern 1a: + * module_param_call() ops can refer to __init set function if permissions=0 + * The pattern is identified by: + * tosec = .init.text + * fromsec = .data* + * atsym = __param_ops_* + * * Pattern 2: * Many drivers utilise a *driver container with references to * add, remove, probe functions etc. - * These functions may often be marked __init and we do not want to + * These functions may often be marked __devinit and we do not want to * warn here. * the pattern is identified by: * tosec = init or exit section @@ -975,7 +1067,8 @@ static int section_mismatch(const char *fromsec, const char *tosec) * refsymname = __init_begin, _sinittext, _einittext * **/ -static int secref_whitelist(const char *fromsec, const char *fromsym, +static int secref_whitelist(const struct sectioncheck *mismatch, + const char *fromsec, const char *fromsym, const char *tosec, const char *tosym) { /* Check for pattern 1 */ @@ -984,10 +1077,16 @@ static int secref_whitelist(const char *fromsec, const char *fromsym, (strncmp(fromsym, "__param", strlen("__param")) == 0)) return 0; + /* Check for pattern 1a */ + if (strcmp(tosec, ".init.text") == 0 && + match(fromsec, data_sections) && + (strncmp(fromsym, "__param_ops_", strlen("__param_ops_")) == 0)) + return 0; + /* Check for pattern 2 */ if (match(tosec, init_exit_sections) && match(fromsec, data_sections) && - match(fromsym, symbol_white_list)) + match(fromsym, mismatch->symbol_white_list)) return 0; /* Check for pattern 3 */ @@ -1016,11 +1115,14 @@ static Elf_Sym *find_elf_symbol(struct elf_info *elf, Elf64_Sword addr, Elf_Sym *near = NULL; Elf64_Sword distance = 20; Elf64_Sword d; + unsigned int relsym_secindex; if (relsym->st_name != 0) return relsym; + + relsym_secindex = get_secindex(elf, relsym); for (sym = elf->symtab_start; sym < elf->symtab_stop; sym++) { - if (sym->st_shndx != relsym->st_shndx) + if (get_secindex(elf, sym) != relsym_secindex) continue; if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) continue; @@ -1082,9 +1184,9 @@ static Elf_Sym *find_elf_symbol2(struct elf_info *elf, Elf_Addr addr, for (sym = elf->symtab_start; sym < elf->symtab_stop; sym++) { const char *symsec; - if (sym->st_shndx >= SHN_LORESERVE) + if (is_shndx_special(sym->st_shndx)) continue; - symsec = sec_name(elf, sym->st_shndx); + symsec = sec_name(elf, get_secindex(elf, sym)); if (strcmp(symsec, sec) != 0) continue; if (!is_valid_name(elf, sym)) @@ -1107,6 +1209,9 @@ static Elf_Sym *find_elf_symbol2(struct elf_info *elf, Elf_Addr addr, * .cpuinit.data => __cpudata * .memexitconst => __memconst * etc. + * + * The memory of returned value has been allocated on a heap. The user of this + * method should free it after usage. */ static char *sec2annotation(const char *s) { @@ -1129,9 +1234,9 @@ static char *sec2annotation(const char *s) strcat(p, "data "); else strcat(p, " "); - return r; /* we leak her but we do not care */ + return r; } else { - return ""; + return strdup(""); } } @@ -1148,7 +1253,8 @@ static int is_function(Elf_Sym *sym) * Try to find symbols near it so user can find it. * Check whitelist before warning - it may be a false positive. */ -static void report_sec_mismatch(const char *modname, enum mismatch mismatch, +static void report_sec_mismatch(const char *modname, + const struct sectioncheck *mismatch, const char *fromsec, unsigned long long fromaddr, const char *fromsym, @@ -1158,6 +1264,8 @@ static void report_sec_mismatch(const char *modname, enum mismatch mismatch, { const char *from, *from_p; const char *to, *to_p; + char *prl_from; + char *prl_to; switch (from_is_func) { case 0: from = "variable"; from_p = ""; break; @@ -1179,64 +1287,80 @@ static void report_sec_mismatch(const char *modname, enum mismatch mismatch, modname, fromsec, fromaddr, from, fromsym, from_p, to, tosec, tosym, to_p); - switch (mismatch) { - case TEXT_TO_INIT: + switch (mismatch->mismatch) { + case TEXT_TO_ANY_INIT: + prl_from = sec2annotation(fromsec); + prl_to = sec2annotation(tosec); fprintf(stderr, "The function %s%s() references\n" "the %s %s%s%s.\n" "This is often because %s lacks a %s\n" "annotation or the annotation of %s is wrong.\n", - sec2annotation(fromsec), fromsym, - to, sec2annotation(tosec), tosym, to_p, - fromsym, sec2annotation(tosec), tosym); + prl_from, fromsym, + to, prl_to, tosym, to_p, + fromsym, prl_to, tosym); + free(prl_from); + free(prl_to); break; - case DATA_TO_INIT: { - const char **s = symbol_white_list; + case DATA_TO_ANY_INIT: { + prl_to = sec2annotation(tosec); + const char *const *s = mismatch->symbol_white_list; fprintf(stderr, "The variable %s references\n" "the %s %s%s%s\n" "If the reference is valid then annotate the\n" "variable with __init* or __refdata (see linux/init.h) " "or name the variable:\n", - fromsym, to, sec2annotation(tosec), tosym, to_p); + fromsym, to, prl_to, tosym, to_p); while (*s) fprintf(stderr, "%s, ", *s++); fprintf(stderr, "\n"); + free(prl_to); break; } - case TEXT_TO_EXIT: + case TEXT_TO_ANY_EXIT: + prl_to = sec2annotation(tosec); fprintf(stderr, "The function %s() references a %s in an exit section.\n" "Often the %s %s%s has valid usage outside the exit section\n" "and the fix is to remove the %sannotation of %s.\n", - fromsym, to, to, tosym, to_p, sec2annotation(tosec), tosym); + fromsym, to, to, tosym, to_p, prl_to, tosym); + free(prl_to); break; - case DATA_TO_EXIT: { - const char **s = symbol_white_list; + case DATA_TO_ANY_EXIT: { + prl_to = sec2annotation(tosec); + const char *const *s = mismatch->symbol_white_list; fprintf(stderr, "The variable %s references\n" "the %s %s%s%s\n" "If the reference is valid then annotate the\n" "variable with __exit* (see linux/init.h) or " "name the variable:\n", - fromsym, to, sec2annotation(tosec), tosym, to_p); + fromsym, to, prl_to, tosym, to_p); while (*s) fprintf(stderr, "%s, ", *s++); fprintf(stderr, "\n"); + free(prl_to); break; } - case XXXINIT_TO_INIT: - case XXXEXIT_TO_EXIT: + case XXXINIT_TO_SOME_INIT: + case XXXEXIT_TO_SOME_EXIT: + prl_from = sec2annotation(fromsec); + prl_to = sec2annotation(tosec); fprintf(stderr, "The %s %s%s%s references\n" "a %s %s%s%s.\n" "If %s is only used by %s then\n" "annotate %s with a matching annotation.\n", - from, sec2annotation(fromsec), fromsym, from_p, - to, sec2annotation(tosec), tosym, to_p, + from, prl_from, fromsym, from_p, + to, prl_to, tosym, to_p, tosym, fromsym, tosym); + free(prl_from); + free(prl_to); break; - case INIT_TO_EXIT: + case ANY_INIT_TO_ANY_EXIT: + prl_from = sec2annotation(fromsec); + prl_to = sec2annotation(tosec); fprintf(stderr, "The %s %s%s%s references\n" "a %s %s%s%s.\n" @@ -1245,11 +1369,15 @@ static void report_sec_mismatch(const char *modname, enum mismatch mismatch, "uses functionality in the exit path.\n" "The fix is often to remove the %sannotation of\n" "%s%s so it may be used outside an exit section.\n", - from, sec2annotation(fromsec), fromsym, from_p, - to, sec2annotation(tosec), tosym, to_p, - sec2annotation(tosec), tosym, to_p); + from, prl_from, fromsym, from_p, + to, prl_to, tosym, to_p, + prl_to, tosym, to_p); + free(prl_from); + free(prl_to); break; - case EXIT_TO_INIT: + case ANY_EXIT_TO_ANY_INIT: + prl_from = sec2annotation(fromsec); + prl_to = sec2annotation(tosec); fprintf(stderr, "The %s %s%s%s references\n" "a %s %s%s%s.\n" @@ -1258,18 +1386,20 @@ static void report_sec_mismatch(const char *modname, enum mismatch mismatch, "uses functionality in the init path.\n" "The fix is often to remove the %sannotation of\n" "%s%s so it may be used outside an init section.\n", - from, sec2annotation(fromsec), fromsym, from_p, - to, sec2annotation(tosec), tosym, to_p, - sec2annotation(tosec), tosym, to_p); + from, prl_from, fromsym, from_p, + to, prl_to, tosym, to_p, + prl_to, tosym, to_p); + free(prl_from); + free(prl_to); break; case EXPORT_TO_INIT_EXIT: + prl_to = sec2annotation(tosec); fprintf(stderr, "The symbol %s is exported and annotated %s\n" "Fix this by removing the %sannotation of %s " "or drop the export.\n", - tosym, sec2annotation(tosec), sec2annotation(tosec), tosym); - case NO_MISMATCH: - /* To get warnings on missing members */ + tosym, prl_to, prl_to, tosym); + free(prl_to); break; } fprintf(stderr, "\n"); @@ -1279,11 +1409,11 @@ static void check_section_mismatch(const char *modname, struct elf_info *elf, Elf_Rela *r, Elf_Sym *sym, const char *fromsec) { const char *tosec; - enum mismatch mismatch; + const struct sectioncheck *mismatch; - tosec = sec_name(elf, sym->st_shndx); + tosec = sec_name(elf, get_secindex(elf, sym)); mismatch = section_mismatch(fromsec, tosec); - if (mismatch != NO_MISMATCH) { + if (mismatch) { Elf_Sym *to; Elf_Sym *from; const char *tosym; @@ -1295,7 +1425,8 @@ static void check_section_mismatch(const char *modname, struct elf_info *elf, tosym = sym_name(elf, to); /* check whitelist - we may ignore it */ - if (secref_whitelist(fromsec, fromsym, tosec, tosym)) { + if (secref_whitelist(mismatch, + fromsec, fromsym, tosec, tosym)) { report_sec_mismatch(modname, mismatch, fromsec, r->r_offset, fromsym, is_function(from), tosec, tosym, @@ -1308,10 +1439,10 @@ static unsigned int *reloc_location(struct elf_info *elf, Elf_Shdr *sechdr, Elf_Rela *r) { Elf_Shdr *sechdrs = elf->sechdrs; - int section = sechdr->sh_info; + int section = shndx2secindex(sechdr->sh_info); return (void *)elf->hdr + sechdrs[section].sh_offset + - (r->r_offset - sechdrs[section].sh_addr); + r->r_offset; } static int addend_386_rel(struct elf_info *elf, Elf_Shdr *sechdr, Elf_Rela *r) @@ -1416,7 +1547,7 @@ static void section_rela(const char *modname, struct elf_info *elf, r.r_addend = TO_NATIVE(rela->r_addend); sym = elf->symtab_start + r_sym; /* Skip special sections */ - if (sym->st_shndx >= SHN_LORESERVE) + if (is_shndx_special(sym->st_shndx)) continue; check_section_mismatch(modname, elf, &r, sym, fromsec); } @@ -1474,7 +1605,7 @@ static void section_rel(const char *modname, struct elf_info *elf, } sym = elf->symtab_start + r_sym; /* Skip special sections */ - if (sym->st_shndx >= SHN_LORESERVE) + if (is_shndx_special(sym->st_shndx)) continue; check_section_mismatch(modname, elf, &r, sym, fromsec); } @@ -1499,7 +1630,7 @@ static void check_sec_ref(struct module *mod, const char *modname, Elf_Shdr *sechdrs = elf->sechdrs; /* Walk through all sections */ - for (i = 0; i < elf->hdr->e_shnum; i++) { + for (i = 0; i < elf->num_sections; i++) { check_section(modname, elf, &elf->sechdrs[i]); /* We want to process only relocation sections and not .init */ if (sechdrs[i].sh_type == SHT_RELA) @@ -1509,62 +1640,6 @@ static void check_sec_ref(struct module *mod, const char *modname, } } -static void get_markers(struct elf_info *info, struct module *mod) -{ - const Elf_Shdr *sh = &info->sechdrs[info->markers_strings_sec]; - const char *strings = (const char *) info->hdr + sh->sh_offset; - const Elf_Sym *sym, *first_sym, *last_sym; - size_t n; - - if (!info->markers_strings_sec) - return; - - /* - * First count the strings. We look for all the symbols defined - * in the __markers_strings section named __mstrtab_*. For - * these local names, the compiler puts a random .NNN suffix on, - * so the names don't correspond exactly. - */ - first_sym = last_sym = NULL; - n = 0; - for (sym = info->symtab_start; sym < info->symtab_stop; sym++) - if (ELF_ST_TYPE(sym->st_info) == STT_OBJECT && - sym->st_shndx == info->markers_strings_sec && - !strncmp(info->strtab + sym->st_name, - "__mstrtab_", sizeof "__mstrtab_" - 1)) { - if (first_sym == NULL) - first_sym = sym; - last_sym = sym; - ++n; - } - - if (n == 0) - return; - - /* - * Now collect each name and format into a line for the output. - * Lines look like: - * marker_name vmlinux marker %s format %d - * The format string after the second \t can use whitespace. - */ - mod->markers = NOFAIL(malloc(sizeof mod->markers[0] * n)); - mod->nmarkers = n; - - n = 0; - for (sym = first_sym; sym <= last_sym; sym++) - if (ELF_ST_TYPE(sym->st_info) == STT_OBJECT && - sym->st_shndx == info->markers_strings_sec && - !strncmp(info->strtab + sym->st_name, - "__mstrtab_", sizeof "__mstrtab_" - 1)) { - const char *name = strings + sym->st_value; - const char *fmt = strchr(name, '\0') + 1; - char *line = NULL; - asprintf(&line, "%s\t%s\t%s\n", name, mod->name, fmt); - NOFAIL(line); - mod->markers[n++] = line; - } -} - static void read_symbols(char *modname) { const char *symname; @@ -1620,8 +1695,6 @@ static void read_symbols(char *modname) get_src_version(modname, mod->srcversion, sizeof(mod->srcversion)-1); - get_markers(&info, mod); - parse_elf_finish(&info); /* Our trick to get versioning for module struct etc. - it's @@ -1746,7 +1819,7 @@ static void add_header(struct buffer *b, struct module *mod) buf_printf(b, "};\n"); } -void add_staging_flag(struct buffer *b, const char *name) +static void add_staging_flag(struct buffer *b, const char *name) { static const char *staging_dir = "drivers/staging"; @@ -1976,96 +2049,6 @@ static void write_dump(const char *fname) write_if_changed(&buf, fname); } -static void add_marker(struct module *mod, const char *name, const char *fmt) -{ - char *line = NULL; - asprintf(&line, "%s\t%s\t%s\n", name, mod->name, fmt); - NOFAIL(line); - - mod->markers = NOFAIL(realloc(mod->markers, ((mod->nmarkers + 1) * - sizeof mod->markers[0]))); - mod->markers[mod->nmarkers++] = line; -} - -static void read_markers(const char *fname) -{ - unsigned long size, pos = 0; - void *file = grab_file(fname, &size); - char *line; - - if (!file) /* No old markers, silently ignore */ - return; - - while ((line = get_next_line(&pos, file, size))) { - char *marker, *modname, *fmt; - struct module *mod; - - marker = line; - modname = strchr(marker, '\t'); - if (!modname) - goto fail; - *modname++ = '\0'; - fmt = strchr(modname, '\t'); - if (!fmt) - goto fail; - *fmt++ = '\0'; - if (*marker == '\0' || *modname == '\0') - goto fail; - - mod = find_module(modname); - if (!mod) { - mod = new_module(modname); - mod->skip = 1; - } - if (is_vmlinux(modname)) { - have_vmlinux = 1; - mod->skip = 0; - } - - if (!mod->skip) - add_marker(mod, marker, fmt); - } - release_file(file, size); - return; -fail: - fatal("parse error in markers list file\n"); -} - -static int compare_strings(const void *a, const void *b) -{ - return strcmp(*(const char **) a, *(const char **) b); -} - -static void write_markers(const char *fname) -{ - struct buffer buf = { }; - struct module *mod; - size_t i; - - for (mod = modules; mod; mod = mod->next) - if ((!external_module || !mod->skip) && mod->markers != NULL) { - /* - * Sort the strings so we can skip duplicates when - * we write them out. - */ - qsort(mod->markers, mod->nmarkers, - sizeof mod->markers[0], &compare_strings); - for (i = 0; i < mod->nmarkers; ++i) { - char *line = mod->markers[i]; - buf_write(&buf, line, strlen(line)); - while (i + 1 < mod->nmarkers && - !strcmp(mod->markers[i], - mod->markers[i + 1])) - free(mod->markers[i++]); - free(mod->markers[i]); - } - free(mod->markers); - mod->markers = NULL; - } - - write_if_changed(&buf, fname); -} - struct ext_sym_list { struct ext_sym_list *next; const char *file; @@ -2077,8 +2060,6 @@ int main(int argc, char **argv) struct buffer buf = { }; char *kernel_read = NULL, *module_read = NULL; char *dump_write = NULL; - char *markers_read = NULL; - char *markers_write = NULL; int opt; int err; struct ext_sym_list *extsym_iter; @@ -2122,12 +2103,6 @@ int main(int argc, char **argv) case 'w': warn_unresolved = 1; break; - case 'M': - markers_write = optarg; - break; - case 'K': - markers_read = optarg; - break; default: exit(1); } @@ -2182,11 +2157,5 @@ int main(int argc, char **argv) "'make CONFIG_DEBUG_SECTION_MISMATCH=y'\n", sec_mismatch_count); - if (markers_read) - read_markers(markers_read); - - if (markers_write) - write_markers(markers_write); - return err; } diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h index 09f58e3..0388cfcc 100644 --- a/scripts/mod/modpost.h +++ b/scripts/mod/modpost.h @@ -112,8 +112,6 @@ struct module { int has_init; int has_cleanup; struct buffer dev_table_buf; - char **markers; - size_t nmarkers; char srcversion[25]; }; @@ -128,12 +126,54 @@ struct elf_info { Elf_Section export_gpl_sec; Elf_Section export_unused_gpl_sec; Elf_Section export_gpl_future_sec; - Elf_Section markers_strings_sec; const char *strtab; char *modinfo; unsigned int modinfo_len; + + /* 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; }; +static inline int is_shndx_special(unsigned int i) +{ + return i != SHN_XINDEX && i >= SHN_LORESERVE && i <= SHN_HIRESERVE; +} + +/* shndx is in [0..SHN_LORESERVE) U (SHN_HIRESERVE, 0xfffffff], thus: + * shndx == 0 <=> sechdrs[0] + * ...... + * shndx == SHN_LORESERVE-1 <=> sechdrs[SHN_LORESERVE-1] + * shndx == SHN_HIRESERVE+1 <=> sechdrs[SHN_LORESERVE] + * shndx == SHN_HIRESERVE+2 <=> sechdrs[SHN_LORESERVE+1] + * ...... + * fyi: sym->st_shndx is uint16, SHN_LORESERVE = ff00, SHN_HIRESERVE = ffff, + * so basically we map 0000..feff -> 0000..feff + * ff00..ffff -> (you are a bad boy, dont do it) + * 10000..xxxx -> ff00..(xxxx-0x100) + */ +static inline unsigned int shndx2secindex(unsigned int i) +{ + if (i <= SHN_HIRESERVE) + return i; + return i - (SHN_HIRESERVE + 1 - SHN_LORESERVE); +} + +/* Accessor for sym->st_shndx, hides ugliness of "64k sections" */ +static inline unsigned int get_secindex(const struct elf_info *info, + const Elf_Sym *sym) +{ + if (sym->st_shndx != SHN_XINDEX) + return sym->st_shndx; + return shndx2secindex(info->symtab_shndx_start[sym - + info->symtab_start]); +} + /* file2alias.c */ extern unsigned int cross_build; void handle_moddevtable(struct module *mod, struct elf_info *info, diff --git a/scripts/mod/sumversion.c b/scripts/mod/sumversion.c index aadc522..ecf9c7d 100644 --- a/scripts/mod/sumversion.c +++ b/scripts/mod/sumversion.c @@ -334,8 +334,6 @@ static int parse_source_files(const char *objfile, struct md4_ctx *md) deps_drivers/net/dummy.o := \ drivers/net/dummy.c \ $(wildcard include/config/net/fastroute.h) \ - include/linux/config.h \ - $(wildcard include/config/h.h) \ include/linux/module.h \ Sum all files in the same dir or subdirs. |