| Message ID | 1542860922-9730-1-git-send-email-yamada.masahiro@socionext.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/2] modpost: file2alias: go back to simple devtable lookup | expand |
On Thu, Nov 22, 2018 at 5:29 AM Masahiro Yamada <yamada.masahiro@socionext.com> wrote: > > Commit e49ce14150c6 ("modpost: use linker section to generate table.") > was not so cool as we had expected because it ended up with ugly section > hacks when commit dd2a3acaecd7 ("mod/file2alias: make modpost compile on > darwin again") came in. > > Given a certain degree of unknowledge about the link stage of host > programs, I really want to see simple, stupid table lookup so that > this works in the same way regardless of the underlying executable > binary format. > > Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> > --- > > scripts/mod/file2alias.c | 144 ++++++++++++++++------------------------------- > 1 file changed, 49 insertions(+), 95 deletions(-) > > diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c > index 28a6166..7e4aede 100644 > --- a/scripts/mod/file2alias.c > +++ b/scripts/mod/file2alias.c > @@ -50,46 +50,6 @@ struct devtable { > void *function; > }; > > -#define ___cat(a,b) a ## b > -#define __cat(a,b) ___cat(a,b) > - > -/* we need some special handling for this host tool running eventually on > - * Darwin. The Mach-O section handling is a bit different than ELF section > - * handling. The differnces in detail are: > - * a) we have segments which have sections > - * b) we need a API call to get the respective section symbols */ > -#if defined(__MACH__) > -#include <mach-o/getsect.h> > - > -#define INIT_SECTION(name) do { \ > - unsigned long name ## _len; \ > - char *__cat(pstart_,name) = getsectdata("__TEXT", \ > - #name, &__cat(name,_len)); \ > - char *__cat(pstop_,name) = __cat(pstart_,name) + \ > - __cat(name, _len); \ > - __cat(__start_,name) = (void *)__cat(pstart_,name); \ > - __cat(__stop_,name) = (void *)__cat(pstop_,name); \ > - } while (0) > -#define SECTION(name) __attribute__((section("__TEXT, " #name))) > - > -struct devtable **__start___devtable, **__stop___devtable; > -#else > -#define INIT_SECTION(name) /* no-op for ELF */ > -#define SECTION(name) __attribute__((section(#name))) > - > -/* We construct a table of pointers in an ELF section (pointers generally > - * go unpadded by gcc). ld creates boundary syms for us. */ > -extern struct devtable *__start___devtable[], *__stop___devtable[]; > -#endif /* __MACH__ */ > - > -#if !defined(__used) > -# if __GNUC__ == 3 && __GNUC_MINOR__ < 3 > -# define __used __attribute__((__unused__)) > -# else > -# define __used __attribute__((__used__)) > -# endif > -#endif Much more complete than my earlier patch. Acked-by: Mathieu Malaterre <malat@debian.org> > /* Define a variable f that holds the value of field f of struct devid > * based at address m. > */ > @@ -110,16 +70,6 @@ extern struct devtable *__start___devtable[], *__stop___devtable[]; > #define DEF_FIELD_ADDR(m, devid, f) \ > DEF_FIELD_ADDR_VAR(m, devid, f, f) > > -/* Add a table entry. We test function type matches while we're here. */ > -#define ADD_TO_DEVTABLE(device_id, type, function) \ > - static struct devtable __cat(devtable,__LINE__) = { \ > - device_id + 0*sizeof((function)((const char *)NULL, \ > - (void *)NULL, \ > - (char *)NULL)), \ > - SIZE_##type, (function) }; \ > - static struct devtable *SECTION(__devtable) __used \ > - __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__) > - > #define ADD(str, sep, cond, field) \ > do { \ > strcat(str, sep); \ > @@ -439,7 +389,6 @@ static int do_hid_entry(const char *filename, > > return 1; > } > -ADD_TO_DEVTABLE("hid", hid_device_id, do_hid_entry); > > /* Looks like: ieee1394:venNmoNspNverN */ > static int do_ieee1394_entry(const char *filename, > @@ -464,7 +413,6 @@ static int do_ieee1394_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("ieee1394", ieee1394_device_id, do_ieee1394_entry); > > /* Looks like: pci:vNdNsvNsdNbcNscNiN. */ > static int do_pci_entry(const char *filename, > @@ -508,7 +456,6 @@ static int do_pci_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("pci", pci_device_id, do_pci_entry); > > /* looks like: "ccw:tNmNdtNdmN" */ > static int do_ccw_entry(const char *filename, > @@ -532,7 +479,6 @@ static int do_ccw_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("ccw", ccw_device_id, do_ccw_entry); > > /* looks like: "ap:tN" */ > static int do_ap_entry(const char *filename, > @@ -543,7 +489,6 @@ static int do_ap_entry(const char *filename, > sprintf(alias, "ap:t%02X*", dev_type); > return 1; > } > -ADD_TO_DEVTABLE("ap", ap_device_id, do_ap_entry); > > /* looks like: "css:tN" */ > static int do_css_entry(const char *filename, > @@ -554,7 +499,6 @@ static int do_css_entry(const char *filename, > sprintf(alias, "css:t%01X", type); > return 1; > } > -ADD_TO_DEVTABLE("css", css_device_id, do_css_entry); > > /* Looks like: "serio:tyNprNidNexN" */ > static int do_serio_entry(const char *filename, > @@ -574,7 +518,6 @@ static int do_serio_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("serio", serio_device_id, do_serio_entry); > > /* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or > * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if) > @@ -612,7 +555,6 @@ static int do_acpi_entry(const char *filename, > } > return 1; > } > -ADD_TO_DEVTABLE("acpi", acpi_device_id, do_acpi_entry); > > /* looks like: "pnp:dD" */ > static void do_pnp_device_entry(void *symval, unsigned long size, > @@ -736,7 +678,6 @@ static int do_pcmcia_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("pcmcia", pcmcia_device_id, do_pcmcia_entry); > > static int do_vio_entry(const char *filename, void *symval, > char *alias) > @@ -756,7 +697,6 @@ static int do_vio_entry(const char *filename, void *symval, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("vio", vio_device_id, do_vio_entry); > > #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) > > @@ -829,7 +769,6 @@ static int do_input_entry(const char *filename, void *symval, > do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX); > return 1; > } > -ADD_TO_DEVTABLE("input", input_device_id, do_input_entry); > > static int do_eisa_entry(const char *filename, void *symval, > char *alias) > @@ -841,7 +780,6 @@ static int do_eisa_entry(const char *filename, void *symval, > strcat(alias, "*"); > return 1; > } > -ADD_TO_DEVTABLE("eisa", eisa_device_id, do_eisa_entry); > > /* Looks like: parisc:tNhvNrevNsvN */ > static int do_parisc_entry(const char *filename, void *symval, > @@ -861,7 +799,6 @@ static int do_parisc_entry(const char *filename, void *symval, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("parisc", parisc_device_id, do_parisc_entry); > > /* Looks like: sdio:cNvNdN. */ > static int do_sdio_entry(const char *filename, > @@ -878,7 +815,6 @@ static int do_sdio_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("sdio", sdio_device_id, do_sdio_entry); > > /* Looks like: ssb:vNidNrevN. */ > static int do_ssb_entry(const char *filename, > @@ -895,7 +831,6 @@ static int do_ssb_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("ssb", ssb_device_id, do_ssb_entry); > > /* Looks like: bcma:mNidNrevNclN. */ > static int do_bcma_entry(const char *filename, > @@ -914,7 +849,6 @@ static int do_bcma_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("bcma", bcma_device_id, do_bcma_entry); > > /* Looks like: virtio:dNvN */ > static int do_virtio_entry(const char *filename, void *symval, > @@ -930,7 +864,6 @@ static int do_virtio_entry(const char *filename, void *symval, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("virtio", virtio_device_id, do_virtio_entry); > > /* > * Looks like: vmbus:guid > @@ -953,7 +886,6 @@ static int do_vmbus_entry(const char *filename, void *symval, > > return 1; > } > -ADD_TO_DEVTABLE("vmbus", hv_vmbus_device_id, do_vmbus_entry); > > /* Looks like: rpmsg:S */ > static int do_rpmsg_entry(const char *filename, void *symval, > @@ -964,7 +896,6 @@ static int do_rpmsg_entry(const char *filename, void *symval, > > return 1; > } > -ADD_TO_DEVTABLE("rpmsg", rpmsg_device_id, do_rpmsg_entry); > > /* Looks like: i2c:S */ > static int do_i2c_entry(const char *filename, void *symval, > @@ -975,7 +906,6 @@ static int do_i2c_entry(const char *filename, void *symval, > > return 1; > } > -ADD_TO_DEVTABLE("i2c", i2c_device_id, do_i2c_entry); > > /* Looks like: spi:S */ > static int do_spi_entry(const char *filename, void *symval, > @@ -986,7 +916,6 @@ static int do_spi_entry(const char *filename, void *symval, > > return 1; > } > -ADD_TO_DEVTABLE("spi", spi_device_id, do_spi_entry); > > static const struct dmifield { > const char *prefix; > @@ -1041,7 +970,6 @@ static int do_dmi_entry(const char *filename, void *symval, > strcat(alias, ":"); > return 1; > } > -ADD_TO_DEVTABLE("dmi", dmi_system_id, do_dmi_entry); > > static int do_platform_entry(const char *filename, > void *symval, char *alias) > @@ -1050,7 +978,6 @@ static int do_platform_entry(const char *filename, > sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name); > return 1; > } > -ADD_TO_DEVTABLE("platform", platform_device_id, do_platform_entry); > > static int do_mdio_entry(const char *filename, > void *symval, char *alias) > @@ -1075,7 +1002,6 @@ static int do_mdio_entry(const char *filename, > > return 1; > } > -ADD_TO_DEVTABLE("mdio", mdio_device_id, do_mdio_entry); > > /* Looks like: zorro:iN. */ > static int do_zorro_entry(const char *filename, void *symval, > @@ -1086,7 +1012,6 @@ static int do_zorro_entry(const char *filename, void *symval, > ADD(alias, "i", id != ZORRO_WILDCARD, id); > return 1; > } > -ADD_TO_DEVTABLE("zorro", zorro_device_id, do_zorro_entry); > > /* looks like: "pnp:dD" */ > static int do_isapnp_entry(const char *filename, > @@ -1102,7 +1027,6 @@ static int do_isapnp_entry(const char *filename, > (function >> 12) & 0x0f, (function >> 8) & 0x0f); > return 1; > } > -ADD_TO_DEVTABLE("isapnp", isapnp_device_id, do_isapnp_entry); > > /* Looks like: "ipack:fNvNdN". */ > static int do_ipack_entry(const char *filename, > @@ -1118,7 +1042,6 @@ static int do_ipack_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("ipack", ipack_device_id, do_ipack_entry); > > /* > * Append a match expression for a single masked hex digit. > @@ -1189,7 +1112,6 @@ static int do_amba_entry(const char *filename, > > return 1; > } > -ADD_TO_DEVTABLE("amba", amba_id, do_amba_entry); > > /* > * looks like: "mipscdmm:tN" > @@ -1205,7 +1127,6 @@ static int do_mips_cdmm_entry(const char *filename, > sprintf(alias, "mipscdmm:t%02X*", type); > return 1; > } > -ADD_TO_DEVTABLE("mipscdmm", mips_cdmm_device_id, do_mips_cdmm_entry); > > /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,* > * All fields are numbers. It would be nicer to use strings for vendor > @@ -1230,7 +1151,6 @@ static int do_x86cpu_entry(const char *filename, void *symval, > sprintf(alias + strlen(alias), "%04X*", feature); > return 1; > } > -ADD_TO_DEVTABLE("x86cpu", x86_cpu_id, do_x86cpu_entry); > > /* LOOKS like cpu:type:*:feature:*FEAT* */ > static int do_cpu_entry(const char *filename, void *symval, char *alias) > @@ -1240,7 +1160,6 @@ static int do_cpu_entry(const char *filename, void *symval, char *alias) > sprintf(alias, "cpu:type:*:feature:*%04X*", feature); > return 1; > } > -ADD_TO_DEVTABLE("cpu", cpu_feature, do_cpu_entry); > > /* Looks like: mei:S:uuid:N:* */ > static int do_mei_entry(const char *filename, void *symval, > @@ -1259,7 +1178,6 @@ static int do_mei_entry(const char *filename, void *symval, > > return 1; > } > -ADD_TO_DEVTABLE("mei", mei_cl_device_id, do_mei_entry); > > /* Looks like: rapidio:vNdNavNadN */ > static int do_rio_entry(const char *filename, > @@ -1279,7 +1197,6 @@ static int do_rio_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("rapidio", rio_device_id, do_rio_entry); > > /* Looks like: ulpi:vNpN */ > static int do_ulpi_entry(const char *filename, void *symval, > @@ -1292,7 +1209,6 @@ static int do_ulpi_entry(const char *filename, void *symval, > > return 1; > } > -ADD_TO_DEVTABLE("ulpi", ulpi_device_id, do_ulpi_entry); > > /* Looks like: hdaudio:vNrNaN */ > static int do_hda_entry(const char *filename, void *symval, char *alias) > @@ -1309,7 +1225,6 @@ static int do_hda_entry(const char *filename, void *symval, char *alias) > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("hdaudio", hda_device_id, do_hda_entry); > > /* Looks like: sdw:mNpN */ > static int do_sdw_entry(const char *filename, void *symval, char *alias) > @@ -1324,7 +1239,6 @@ static int do_sdw_entry(const char *filename, void *symval, char *alias) > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("sdw", sdw_device_id, do_sdw_entry); > > /* Looks like: fsl-mc:vNdN */ > static int do_fsl_mc_entry(const char *filename, void *symval, > @@ -1336,7 +1250,6 @@ static int do_fsl_mc_entry(const char *filename, void *symval, > sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type); > return 1; > } > -ADD_TO_DEVTABLE("fslmc", fsl_mc_device_id, do_fsl_mc_entry); > > /* Looks like: tbsvc:kSpNvNrN */ > static int do_tbsvc_entry(const char *filename, void *symval, char *alias) > @@ -1361,7 +1274,6 @@ static int do_tbsvc_entry(const char *filename, void *symval, char *alias) > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("tbsvc", tb_service_id, do_tbsvc_entry); > > /* Looks like: typec:idNmN */ > static int do_typec_entry(const char *filename, void *symval, char *alias) > @@ -1374,7 +1286,6 @@ static int do_typec_entry(const char *filename, void *symval, char *alias) > > return 1; > } > -ADD_TO_DEVTABLE("typec", typec_device_id, do_typec_entry); > > /* Does namelen bytes of name exactly match the symbol? */ > static bool sym_is(const char *name, unsigned namelen, const char *symbol) > @@ -1407,6 +1318,48 @@ static void do_table(void *symval, unsigned long size, > } > } > > +static const struct devtable devtable[] = { > + {"hid", SIZE_hid_device_id, do_hid_entry}, > + {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry}, > + {"pci", SIZE_pci_device_id, do_pci_entry}, > + {"ccw", SIZE_ccw_device_id, do_ccw_entry}, > + {"ap", SIZE_ap_device_id, do_ap_entry}, > + {"css", SIZE_css_device_id, do_css_entry}, > + {"serio", SIZE_serio_device_id, do_serio_entry}, > + {"acpi", SIZE_acpi_device_id, do_acpi_entry}, > + {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry}, > + {"vio", SIZE_vio_device_id, do_vio_entry}, > + {"input", SIZE_input_device_id, do_input_entry}, > + {"eisa", SIZE_eisa_device_id, do_eisa_entry}, > + {"parisc", SIZE_parisc_device_id, do_parisc_entry}, > + {"sdio", SIZE_sdio_device_id, do_sdio_entry}, > + {"ssb", SIZE_ssb_device_id, do_ssb_entry}, > + {"bcma", SIZE_bcma_device_id, do_bcma_entry}, > + {"virtio", SIZE_virtio_device_id, do_virtio_entry}, > + {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry}, > + {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry}, > + {"i2c", SIZE_i2c_device_id, do_i2c_entry}, > + {"spi", SIZE_spi_device_id, do_spi_entry}, > + {"dmi", SIZE_dmi_system_id, do_dmi_entry}, > + {"platform", SIZE_platform_device_id, do_platform_entry}, > + {"mdio", SIZE_mdio_device_id, do_mdio_entry}, > + {"zorro", SIZE_zorro_device_id, do_zorro_entry}, > + {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry}, > + {"ipack", SIZE_ipack_device_id, do_ipack_entry}, > + {"amba", SIZE_amba_id, do_amba_entry}, > + {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry}, > + {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry}, > + {"cpu", SIZE_cpu_feature, do_cpu_entry}, > + {"mei", SIZE_mei_cl_device_id, do_mei_entry}, > + {"rapidio", SIZE_rio_device_id, do_rio_entry}, > + {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry}, > + {"hdaudio", SIZE_hda_device_id, do_hda_entry}, > + {"sdw", SIZE_sdw_device_id, do_sdw_entry}, > + {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry}, > + {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry}, > + {"typec", SIZE_typec_device_id, do_typec_entry}, > +}; > + > /* Create MODULE_ALIAS() statements. > * At this time, we cannot write the actual output C source yet, > * so we write into the mod->dev_table_buf buffer. */ > @@ -1460,13 +1413,14 @@ void handle_moddevtable(struct module *mod, struct elf_info *info, > else if (sym_is(name, namelen, "pnp_card")) > do_pnp_card_entries(symval, sym->st_size, mod); > else { > - struct devtable **p; > - INIT_SECTION(__devtable); > + int i; > + > + for (i = 0; i < ARRAY_SIZE(devtable); i++) { > + const struct devtable *p = &devtable[i]; > > - for (p = __start___devtable; p < __stop___devtable; p++) { > - if (sym_is(name, namelen, (*p)->device_id)) { > - do_table(symval, sym->st_size, (*p)->id_size, > - (*p)->device_id, (*p)->function, mod); > + if (sym_is(name, namelen, p->device_id)) { > + do_table(symval, sym->st_size, p->id_size, > + p->device_id, p->function, mod); > break; > } > } > -- > 2.7.4 >
On Fri, Nov 23, 2018 at 1:52 AM Masahiro Yamada <yamada.masahiro@socionext.com> wrote: > > Commit e49ce14150c6 ("modpost: use linker section to generate table.") > was not so cool as we had expected because it ended up with ugly section > hacks when commit dd2a3acaecd7 ("mod/file2alias: make modpost compile on > darwin again") came in. > > Given a certain degree of unknowledge about the link stage of host > programs, I really want to see simple, stupid table lookup so that > this works in the same way regardless of the underlying executable > binary format. > > Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> > --- Applied to linux-kbuild. > scripts/mod/file2alias.c | 144 ++++++++++++++++------------------------------- > 1 file changed, 49 insertions(+), 95 deletions(-) > > diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c > index 28a6166..7e4aede 100644 > --- a/scripts/mod/file2alias.c > +++ b/scripts/mod/file2alias.c > @@ -50,46 +50,6 @@ struct devtable { > void *function; > }; > > -#define ___cat(a,b) a ## b > -#define __cat(a,b) ___cat(a,b) > - > -/* we need some special handling for this host tool running eventually on > - * Darwin. The Mach-O section handling is a bit different than ELF section > - * handling. The differnces in detail are: > - * a) we have segments which have sections > - * b) we need a API call to get the respective section symbols */ > -#if defined(__MACH__) > -#include <mach-o/getsect.h> > - > -#define INIT_SECTION(name) do { \ > - unsigned long name ## _len; \ > - char *__cat(pstart_,name) = getsectdata("__TEXT", \ > - #name, &__cat(name,_len)); \ > - char *__cat(pstop_,name) = __cat(pstart_,name) + \ > - __cat(name, _len); \ > - __cat(__start_,name) = (void *)__cat(pstart_,name); \ > - __cat(__stop_,name) = (void *)__cat(pstop_,name); \ > - } while (0) > -#define SECTION(name) __attribute__((section("__TEXT, " #name))) > - > -struct devtable **__start___devtable, **__stop___devtable; > -#else > -#define INIT_SECTION(name) /* no-op for ELF */ > -#define SECTION(name) __attribute__((section(#name))) > - > -/* We construct a table of pointers in an ELF section (pointers generally > - * go unpadded by gcc). ld creates boundary syms for us. */ > -extern struct devtable *__start___devtable[], *__stop___devtable[]; > -#endif /* __MACH__ */ > - > -#if !defined(__used) > -# if __GNUC__ == 3 && __GNUC_MINOR__ < 3 > -# define __used __attribute__((__unused__)) > -# else > -# define __used __attribute__((__used__)) > -# endif > -#endif > - > /* Define a variable f that holds the value of field f of struct devid > * based at address m. > */ > @@ -110,16 +70,6 @@ extern struct devtable *__start___devtable[], *__stop___devtable[]; > #define DEF_FIELD_ADDR(m, devid, f) \ > DEF_FIELD_ADDR_VAR(m, devid, f, f) > > -/* Add a table entry. We test function type matches while we're here. */ > -#define ADD_TO_DEVTABLE(device_id, type, function) \ > - static struct devtable __cat(devtable,__LINE__) = { \ > - device_id + 0*sizeof((function)((const char *)NULL, \ > - (void *)NULL, \ > - (char *)NULL)), \ > - SIZE_##type, (function) }; \ > - static struct devtable *SECTION(__devtable) __used \ > - __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__) > - > #define ADD(str, sep, cond, field) \ > do { \ > strcat(str, sep); \ > @@ -439,7 +389,6 @@ static int do_hid_entry(const char *filename, > > return 1; > } > -ADD_TO_DEVTABLE("hid", hid_device_id, do_hid_entry); > > /* Looks like: ieee1394:venNmoNspNverN */ > static int do_ieee1394_entry(const char *filename, > @@ -464,7 +413,6 @@ static int do_ieee1394_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("ieee1394", ieee1394_device_id, do_ieee1394_entry); > > /* Looks like: pci:vNdNsvNsdNbcNscNiN. */ > static int do_pci_entry(const char *filename, > @@ -508,7 +456,6 @@ static int do_pci_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("pci", pci_device_id, do_pci_entry); > > /* looks like: "ccw:tNmNdtNdmN" */ > static int do_ccw_entry(const char *filename, > @@ -532,7 +479,6 @@ static int do_ccw_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("ccw", ccw_device_id, do_ccw_entry); > > /* looks like: "ap:tN" */ > static int do_ap_entry(const char *filename, > @@ -543,7 +489,6 @@ static int do_ap_entry(const char *filename, > sprintf(alias, "ap:t%02X*", dev_type); > return 1; > } > -ADD_TO_DEVTABLE("ap", ap_device_id, do_ap_entry); > > /* looks like: "css:tN" */ > static int do_css_entry(const char *filename, > @@ -554,7 +499,6 @@ static int do_css_entry(const char *filename, > sprintf(alias, "css:t%01X", type); > return 1; > } > -ADD_TO_DEVTABLE("css", css_device_id, do_css_entry); > > /* Looks like: "serio:tyNprNidNexN" */ > static int do_serio_entry(const char *filename, > @@ -574,7 +518,6 @@ static int do_serio_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("serio", serio_device_id, do_serio_entry); > > /* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or > * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if) > @@ -612,7 +555,6 @@ static int do_acpi_entry(const char *filename, > } > return 1; > } > -ADD_TO_DEVTABLE("acpi", acpi_device_id, do_acpi_entry); > > /* looks like: "pnp:dD" */ > static void do_pnp_device_entry(void *symval, unsigned long size, > @@ -736,7 +678,6 @@ static int do_pcmcia_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("pcmcia", pcmcia_device_id, do_pcmcia_entry); > > static int do_vio_entry(const char *filename, void *symval, > char *alias) > @@ -756,7 +697,6 @@ static int do_vio_entry(const char *filename, void *symval, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("vio", vio_device_id, do_vio_entry); > > #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) > > @@ -829,7 +769,6 @@ static int do_input_entry(const char *filename, void *symval, > do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX); > return 1; > } > -ADD_TO_DEVTABLE("input", input_device_id, do_input_entry); > > static int do_eisa_entry(const char *filename, void *symval, > char *alias) > @@ -841,7 +780,6 @@ static int do_eisa_entry(const char *filename, void *symval, > strcat(alias, "*"); > return 1; > } > -ADD_TO_DEVTABLE("eisa", eisa_device_id, do_eisa_entry); > > /* Looks like: parisc:tNhvNrevNsvN */ > static int do_parisc_entry(const char *filename, void *symval, > @@ -861,7 +799,6 @@ static int do_parisc_entry(const char *filename, void *symval, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("parisc", parisc_device_id, do_parisc_entry); > > /* Looks like: sdio:cNvNdN. */ > static int do_sdio_entry(const char *filename, > @@ -878,7 +815,6 @@ static int do_sdio_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("sdio", sdio_device_id, do_sdio_entry); > > /* Looks like: ssb:vNidNrevN. */ > static int do_ssb_entry(const char *filename, > @@ -895,7 +831,6 @@ static int do_ssb_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("ssb", ssb_device_id, do_ssb_entry); > > /* Looks like: bcma:mNidNrevNclN. */ > static int do_bcma_entry(const char *filename, > @@ -914,7 +849,6 @@ static int do_bcma_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("bcma", bcma_device_id, do_bcma_entry); > > /* Looks like: virtio:dNvN */ > static int do_virtio_entry(const char *filename, void *symval, > @@ -930,7 +864,6 @@ static int do_virtio_entry(const char *filename, void *symval, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("virtio", virtio_device_id, do_virtio_entry); > > /* > * Looks like: vmbus:guid > @@ -953,7 +886,6 @@ static int do_vmbus_entry(const char *filename, void *symval, > > return 1; > } > -ADD_TO_DEVTABLE("vmbus", hv_vmbus_device_id, do_vmbus_entry); > > /* Looks like: rpmsg:S */ > static int do_rpmsg_entry(const char *filename, void *symval, > @@ -964,7 +896,6 @@ static int do_rpmsg_entry(const char *filename, void *symval, > > return 1; > } > -ADD_TO_DEVTABLE("rpmsg", rpmsg_device_id, do_rpmsg_entry); > > /* Looks like: i2c:S */ > static int do_i2c_entry(const char *filename, void *symval, > @@ -975,7 +906,6 @@ static int do_i2c_entry(const char *filename, void *symval, > > return 1; > } > -ADD_TO_DEVTABLE("i2c", i2c_device_id, do_i2c_entry); > > /* Looks like: spi:S */ > static int do_spi_entry(const char *filename, void *symval, > @@ -986,7 +916,6 @@ static int do_spi_entry(const char *filename, void *symval, > > return 1; > } > -ADD_TO_DEVTABLE("spi", spi_device_id, do_spi_entry); > > static const struct dmifield { > const char *prefix; > @@ -1041,7 +970,6 @@ static int do_dmi_entry(const char *filename, void *symval, > strcat(alias, ":"); > return 1; > } > -ADD_TO_DEVTABLE("dmi", dmi_system_id, do_dmi_entry); > > static int do_platform_entry(const char *filename, > void *symval, char *alias) > @@ -1050,7 +978,6 @@ static int do_platform_entry(const char *filename, > sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name); > return 1; > } > -ADD_TO_DEVTABLE("platform", platform_device_id, do_platform_entry); > > static int do_mdio_entry(const char *filename, > void *symval, char *alias) > @@ -1075,7 +1002,6 @@ static int do_mdio_entry(const char *filename, > > return 1; > } > -ADD_TO_DEVTABLE("mdio", mdio_device_id, do_mdio_entry); > > /* Looks like: zorro:iN. */ > static int do_zorro_entry(const char *filename, void *symval, > @@ -1086,7 +1012,6 @@ static int do_zorro_entry(const char *filename, void *symval, > ADD(alias, "i", id != ZORRO_WILDCARD, id); > return 1; > } > -ADD_TO_DEVTABLE("zorro", zorro_device_id, do_zorro_entry); > > /* looks like: "pnp:dD" */ > static int do_isapnp_entry(const char *filename, > @@ -1102,7 +1027,6 @@ static int do_isapnp_entry(const char *filename, > (function >> 12) & 0x0f, (function >> 8) & 0x0f); > return 1; > } > -ADD_TO_DEVTABLE("isapnp", isapnp_device_id, do_isapnp_entry); > > /* Looks like: "ipack:fNvNdN". */ > static int do_ipack_entry(const char *filename, > @@ -1118,7 +1042,6 @@ static int do_ipack_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("ipack", ipack_device_id, do_ipack_entry); > > /* > * Append a match expression for a single masked hex digit. > @@ -1189,7 +1112,6 @@ static int do_amba_entry(const char *filename, > > return 1; > } > -ADD_TO_DEVTABLE("amba", amba_id, do_amba_entry); > > /* > * looks like: "mipscdmm:tN" > @@ -1205,7 +1127,6 @@ static int do_mips_cdmm_entry(const char *filename, > sprintf(alias, "mipscdmm:t%02X*", type); > return 1; > } > -ADD_TO_DEVTABLE("mipscdmm", mips_cdmm_device_id, do_mips_cdmm_entry); > > /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,* > * All fields are numbers. It would be nicer to use strings for vendor > @@ -1230,7 +1151,6 @@ static int do_x86cpu_entry(const char *filename, void *symval, > sprintf(alias + strlen(alias), "%04X*", feature); > return 1; > } > -ADD_TO_DEVTABLE("x86cpu", x86_cpu_id, do_x86cpu_entry); > > /* LOOKS like cpu:type:*:feature:*FEAT* */ > static int do_cpu_entry(const char *filename, void *symval, char *alias) > @@ -1240,7 +1160,6 @@ static int do_cpu_entry(const char *filename, void *symval, char *alias) > sprintf(alias, "cpu:type:*:feature:*%04X*", feature); > return 1; > } > -ADD_TO_DEVTABLE("cpu", cpu_feature, do_cpu_entry); > > /* Looks like: mei:S:uuid:N:* */ > static int do_mei_entry(const char *filename, void *symval, > @@ -1259,7 +1178,6 @@ static int do_mei_entry(const char *filename, void *symval, > > return 1; > } > -ADD_TO_DEVTABLE("mei", mei_cl_device_id, do_mei_entry); > > /* Looks like: rapidio:vNdNavNadN */ > static int do_rio_entry(const char *filename, > @@ -1279,7 +1197,6 @@ static int do_rio_entry(const char *filename, > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("rapidio", rio_device_id, do_rio_entry); > > /* Looks like: ulpi:vNpN */ > static int do_ulpi_entry(const char *filename, void *symval, > @@ -1292,7 +1209,6 @@ static int do_ulpi_entry(const char *filename, void *symval, > > return 1; > } > -ADD_TO_DEVTABLE("ulpi", ulpi_device_id, do_ulpi_entry); > > /* Looks like: hdaudio:vNrNaN */ > static int do_hda_entry(const char *filename, void *symval, char *alias) > @@ -1309,7 +1225,6 @@ static int do_hda_entry(const char *filename, void *symval, char *alias) > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("hdaudio", hda_device_id, do_hda_entry); > > /* Looks like: sdw:mNpN */ > static int do_sdw_entry(const char *filename, void *symval, char *alias) > @@ -1324,7 +1239,6 @@ static int do_sdw_entry(const char *filename, void *symval, char *alias) > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("sdw", sdw_device_id, do_sdw_entry); > > /* Looks like: fsl-mc:vNdN */ > static int do_fsl_mc_entry(const char *filename, void *symval, > @@ -1336,7 +1250,6 @@ static int do_fsl_mc_entry(const char *filename, void *symval, > sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type); > return 1; > } > -ADD_TO_DEVTABLE("fslmc", fsl_mc_device_id, do_fsl_mc_entry); > > /* Looks like: tbsvc:kSpNvNrN */ > static int do_tbsvc_entry(const char *filename, void *symval, char *alias) > @@ -1361,7 +1274,6 @@ static int do_tbsvc_entry(const char *filename, void *symval, char *alias) > add_wildcard(alias); > return 1; > } > -ADD_TO_DEVTABLE("tbsvc", tb_service_id, do_tbsvc_entry); > > /* Looks like: typec:idNmN */ > static int do_typec_entry(const char *filename, void *symval, char *alias) > @@ -1374,7 +1286,6 @@ static int do_typec_entry(const char *filename, void *symval, char *alias) > > return 1; > } > -ADD_TO_DEVTABLE("typec", typec_device_id, do_typec_entry); > > /* Does namelen bytes of name exactly match the symbol? */ > static bool sym_is(const char *name, unsigned namelen, const char *symbol) > @@ -1407,6 +1318,48 @@ static void do_table(void *symval, unsigned long size, > } > } > > +static const struct devtable devtable[] = { > + {"hid", SIZE_hid_device_id, do_hid_entry}, > + {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry}, > + {"pci", SIZE_pci_device_id, do_pci_entry}, > + {"ccw", SIZE_ccw_device_id, do_ccw_entry}, > + {"ap", SIZE_ap_device_id, do_ap_entry}, > + {"css", SIZE_css_device_id, do_css_entry}, > + {"serio", SIZE_serio_device_id, do_serio_entry}, > + {"acpi", SIZE_acpi_device_id, do_acpi_entry}, > + {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry}, > + {"vio", SIZE_vio_device_id, do_vio_entry}, > + {"input", SIZE_input_device_id, do_input_entry}, > + {"eisa", SIZE_eisa_device_id, do_eisa_entry}, > + {"parisc", SIZE_parisc_device_id, do_parisc_entry}, > + {"sdio", SIZE_sdio_device_id, do_sdio_entry}, > + {"ssb", SIZE_ssb_device_id, do_ssb_entry}, > + {"bcma", SIZE_bcma_device_id, do_bcma_entry}, > + {"virtio", SIZE_virtio_device_id, do_virtio_entry}, > + {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry}, > + {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry}, > + {"i2c", SIZE_i2c_device_id, do_i2c_entry}, > + {"spi", SIZE_spi_device_id, do_spi_entry}, > + {"dmi", SIZE_dmi_system_id, do_dmi_entry}, > + {"platform", SIZE_platform_device_id, do_platform_entry}, > + {"mdio", SIZE_mdio_device_id, do_mdio_entry}, > + {"zorro", SIZE_zorro_device_id, do_zorro_entry}, > + {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry}, > + {"ipack", SIZE_ipack_device_id, do_ipack_entry}, > + {"amba", SIZE_amba_id, do_amba_entry}, > + {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry}, > + {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry}, > + {"cpu", SIZE_cpu_feature, do_cpu_entry}, > + {"mei", SIZE_mei_cl_device_id, do_mei_entry}, > + {"rapidio", SIZE_rio_device_id, do_rio_entry}, > + {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry}, > + {"hdaudio", SIZE_hda_device_id, do_hda_entry}, > + {"sdw", SIZE_sdw_device_id, do_sdw_entry}, > + {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry}, > + {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry}, > + {"typec", SIZE_typec_device_id, do_typec_entry}, > +}; > + > /* Create MODULE_ALIAS() statements. > * At this time, we cannot write the actual output C source yet, > * so we write into the mod->dev_table_buf buffer. */ > @@ -1460,13 +1413,14 @@ void handle_moddevtable(struct module *mod, struct elf_info *info, > else if (sym_is(name, namelen, "pnp_card")) > do_pnp_card_entries(symval, sym->st_size, mod); > else { > - struct devtable **p; > - INIT_SECTION(__devtable); > + int i; > + > + for (i = 0; i < ARRAY_SIZE(devtable); i++) { > + const struct devtable *p = &devtable[i]; > > - for (p = __start___devtable; p < __stop___devtable; p++) { > - if (sym_is(name, namelen, (*p)->device_id)) { > - do_table(symval, sym->st_size, (*p)->id_size, > - (*p)->device_id, (*p)->function, mod); > + if (sym_is(name, namelen, p->device_id)) { > + do_table(symval, sym->st_size, p->id_size, > + p->device_id, p->function, mod); > break; > } > } > -- > 2.7.4 >
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index 28a6166..7e4aede 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -50,46 +50,6 @@ struct devtable { void *function; }; -#define ___cat(a,b) a ## b -#define __cat(a,b) ___cat(a,b) - -/* we need some special handling for this host tool running eventually on - * Darwin. The Mach-O section handling is a bit different than ELF section - * handling. The differnces in detail are: - * a) we have segments which have sections - * b) we need a API call to get the respective section symbols */ -#if defined(__MACH__) -#include <mach-o/getsect.h> - -#define INIT_SECTION(name) do { \ - unsigned long name ## _len; \ - char *__cat(pstart_,name) = getsectdata("__TEXT", \ - #name, &__cat(name,_len)); \ - char *__cat(pstop_,name) = __cat(pstart_,name) + \ - __cat(name, _len); \ - __cat(__start_,name) = (void *)__cat(pstart_,name); \ - __cat(__stop_,name) = (void *)__cat(pstop_,name); \ - } while (0) -#define SECTION(name) __attribute__((section("__TEXT, " #name))) - -struct devtable **__start___devtable, **__stop___devtable; -#else -#define INIT_SECTION(name) /* no-op for ELF */ -#define SECTION(name) __attribute__((section(#name))) - -/* We construct a table of pointers in an ELF section (pointers generally - * go unpadded by gcc). ld creates boundary syms for us. */ -extern struct devtable *__start___devtable[], *__stop___devtable[]; -#endif /* __MACH__ */ - -#if !defined(__used) -# if __GNUC__ == 3 && __GNUC_MINOR__ < 3 -# define __used __attribute__((__unused__)) -# else -# define __used __attribute__((__used__)) -# endif -#endif - /* Define a variable f that holds the value of field f of struct devid * based at address m. */ @@ -110,16 +70,6 @@ extern struct devtable *__start___devtable[], *__stop___devtable[]; #define DEF_FIELD_ADDR(m, devid, f) \ DEF_FIELD_ADDR_VAR(m, devid, f, f) -/* Add a table entry. We test function type matches while we're here. */ -#define ADD_TO_DEVTABLE(device_id, type, function) \ - static struct devtable __cat(devtable,__LINE__) = { \ - device_id + 0*sizeof((function)((const char *)NULL, \ - (void *)NULL, \ - (char *)NULL)), \ - SIZE_##type, (function) }; \ - static struct devtable *SECTION(__devtable) __used \ - __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__) - #define ADD(str, sep, cond, field) \ do { \ strcat(str, sep); \ @@ -439,7 +389,6 @@ static int do_hid_entry(const char *filename, return 1; } -ADD_TO_DEVTABLE("hid", hid_device_id, do_hid_entry); /* Looks like: ieee1394:venNmoNspNverN */ static int do_ieee1394_entry(const char *filename, @@ -464,7 +413,6 @@ static int do_ieee1394_entry(const char *filename, add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("ieee1394", ieee1394_device_id, do_ieee1394_entry); /* Looks like: pci:vNdNsvNsdNbcNscNiN. */ static int do_pci_entry(const char *filename, @@ -508,7 +456,6 @@ static int do_pci_entry(const char *filename, add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("pci", pci_device_id, do_pci_entry); /* looks like: "ccw:tNmNdtNdmN" */ static int do_ccw_entry(const char *filename, @@ -532,7 +479,6 @@ static int do_ccw_entry(const char *filename, add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("ccw", ccw_device_id, do_ccw_entry); /* looks like: "ap:tN" */ static int do_ap_entry(const char *filename, @@ -543,7 +489,6 @@ static int do_ap_entry(const char *filename, sprintf(alias, "ap:t%02X*", dev_type); return 1; } -ADD_TO_DEVTABLE("ap", ap_device_id, do_ap_entry); /* looks like: "css:tN" */ static int do_css_entry(const char *filename, @@ -554,7 +499,6 @@ static int do_css_entry(const char *filename, sprintf(alias, "css:t%01X", type); return 1; } -ADD_TO_DEVTABLE("css", css_device_id, do_css_entry); /* Looks like: "serio:tyNprNidNexN" */ static int do_serio_entry(const char *filename, @@ -574,7 +518,6 @@ static int do_serio_entry(const char *filename, add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("serio", serio_device_id, do_serio_entry); /* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if) @@ -612,7 +555,6 @@ static int do_acpi_entry(const char *filename, } return 1; } -ADD_TO_DEVTABLE("acpi", acpi_device_id, do_acpi_entry); /* looks like: "pnp:dD" */ static void do_pnp_device_entry(void *symval, unsigned long size, @@ -736,7 +678,6 @@ static int do_pcmcia_entry(const char *filename, add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("pcmcia", pcmcia_device_id, do_pcmcia_entry); static int do_vio_entry(const char *filename, void *symval, char *alias) @@ -756,7 +697,6 @@ static int do_vio_entry(const char *filename, void *symval, add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("vio", vio_device_id, do_vio_entry); #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) @@ -829,7 +769,6 @@ static int do_input_entry(const char *filename, void *symval, do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX); return 1; } -ADD_TO_DEVTABLE("input", input_device_id, do_input_entry); static int do_eisa_entry(const char *filename, void *symval, char *alias) @@ -841,7 +780,6 @@ static int do_eisa_entry(const char *filename, void *symval, strcat(alias, "*"); return 1; } -ADD_TO_DEVTABLE("eisa", eisa_device_id, do_eisa_entry); /* Looks like: parisc:tNhvNrevNsvN */ static int do_parisc_entry(const char *filename, void *symval, @@ -861,7 +799,6 @@ static int do_parisc_entry(const char *filename, void *symval, add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("parisc", parisc_device_id, do_parisc_entry); /* Looks like: sdio:cNvNdN. */ static int do_sdio_entry(const char *filename, @@ -878,7 +815,6 @@ static int do_sdio_entry(const char *filename, add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("sdio", sdio_device_id, do_sdio_entry); /* Looks like: ssb:vNidNrevN. */ static int do_ssb_entry(const char *filename, @@ -895,7 +831,6 @@ static int do_ssb_entry(const char *filename, add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("ssb", ssb_device_id, do_ssb_entry); /* Looks like: bcma:mNidNrevNclN. */ static int do_bcma_entry(const char *filename, @@ -914,7 +849,6 @@ static int do_bcma_entry(const char *filename, add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("bcma", bcma_device_id, do_bcma_entry); /* Looks like: virtio:dNvN */ static int do_virtio_entry(const char *filename, void *symval, @@ -930,7 +864,6 @@ static int do_virtio_entry(const char *filename, void *symval, add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("virtio", virtio_device_id, do_virtio_entry); /* * Looks like: vmbus:guid @@ -953,7 +886,6 @@ static int do_vmbus_entry(const char *filename, void *symval, return 1; } -ADD_TO_DEVTABLE("vmbus", hv_vmbus_device_id, do_vmbus_entry); /* Looks like: rpmsg:S */ static int do_rpmsg_entry(const char *filename, void *symval, @@ -964,7 +896,6 @@ static int do_rpmsg_entry(const char *filename, void *symval, return 1; } -ADD_TO_DEVTABLE("rpmsg", rpmsg_device_id, do_rpmsg_entry); /* Looks like: i2c:S */ static int do_i2c_entry(const char *filename, void *symval, @@ -975,7 +906,6 @@ static int do_i2c_entry(const char *filename, void *symval, return 1; } -ADD_TO_DEVTABLE("i2c", i2c_device_id, do_i2c_entry); /* Looks like: spi:S */ static int do_spi_entry(const char *filename, void *symval, @@ -986,7 +916,6 @@ static int do_spi_entry(const char *filename, void *symval, return 1; } -ADD_TO_DEVTABLE("spi", spi_device_id, do_spi_entry); static const struct dmifield { const char *prefix; @@ -1041,7 +970,6 @@ static int do_dmi_entry(const char *filename, void *symval, strcat(alias, ":"); return 1; } -ADD_TO_DEVTABLE("dmi", dmi_system_id, do_dmi_entry); static int do_platform_entry(const char *filename, void *symval, char *alias) @@ -1050,7 +978,6 @@ static int do_platform_entry(const char *filename, sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name); return 1; } -ADD_TO_DEVTABLE("platform", platform_device_id, do_platform_entry); static int do_mdio_entry(const char *filename, void *symval, char *alias) @@ -1075,7 +1002,6 @@ static int do_mdio_entry(const char *filename, return 1; } -ADD_TO_DEVTABLE("mdio", mdio_device_id, do_mdio_entry); /* Looks like: zorro:iN. */ static int do_zorro_entry(const char *filename, void *symval, @@ -1086,7 +1012,6 @@ static int do_zorro_entry(const char *filename, void *symval, ADD(alias, "i", id != ZORRO_WILDCARD, id); return 1; } -ADD_TO_DEVTABLE("zorro", zorro_device_id, do_zorro_entry); /* looks like: "pnp:dD" */ static int do_isapnp_entry(const char *filename, @@ -1102,7 +1027,6 @@ static int do_isapnp_entry(const char *filename, (function >> 12) & 0x0f, (function >> 8) & 0x0f); return 1; } -ADD_TO_DEVTABLE("isapnp", isapnp_device_id, do_isapnp_entry); /* Looks like: "ipack:fNvNdN". */ static int do_ipack_entry(const char *filename, @@ -1118,7 +1042,6 @@ static int do_ipack_entry(const char *filename, add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("ipack", ipack_device_id, do_ipack_entry); /* * Append a match expression for a single masked hex digit. @@ -1189,7 +1112,6 @@ static int do_amba_entry(const char *filename, return 1; } -ADD_TO_DEVTABLE("amba", amba_id, do_amba_entry); /* * looks like: "mipscdmm:tN" @@ -1205,7 +1127,6 @@ static int do_mips_cdmm_entry(const char *filename, sprintf(alias, "mipscdmm:t%02X*", type); return 1; } -ADD_TO_DEVTABLE("mipscdmm", mips_cdmm_device_id, do_mips_cdmm_entry); /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,* * All fields are numbers. It would be nicer to use strings for vendor @@ -1230,7 +1151,6 @@ static int do_x86cpu_entry(const char *filename, void *symval, sprintf(alias + strlen(alias), "%04X*", feature); return 1; } -ADD_TO_DEVTABLE("x86cpu", x86_cpu_id, do_x86cpu_entry); /* LOOKS like cpu:type:*:feature:*FEAT* */ static int do_cpu_entry(const char *filename, void *symval, char *alias) @@ -1240,7 +1160,6 @@ static int do_cpu_entry(const char *filename, void *symval, char *alias) sprintf(alias, "cpu:type:*:feature:*%04X*", feature); return 1; } -ADD_TO_DEVTABLE("cpu", cpu_feature, do_cpu_entry); /* Looks like: mei:S:uuid:N:* */ static int do_mei_entry(const char *filename, void *symval, @@ -1259,7 +1178,6 @@ static int do_mei_entry(const char *filename, void *symval, return 1; } -ADD_TO_DEVTABLE("mei", mei_cl_device_id, do_mei_entry); /* Looks like: rapidio:vNdNavNadN */ static int do_rio_entry(const char *filename, @@ -1279,7 +1197,6 @@ static int do_rio_entry(const char *filename, add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("rapidio", rio_device_id, do_rio_entry); /* Looks like: ulpi:vNpN */ static int do_ulpi_entry(const char *filename, void *symval, @@ -1292,7 +1209,6 @@ static int do_ulpi_entry(const char *filename, void *symval, return 1; } -ADD_TO_DEVTABLE("ulpi", ulpi_device_id, do_ulpi_entry); /* Looks like: hdaudio:vNrNaN */ static int do_hda_entry(const char *filename, void *symval, char *alias) @@ -1309,7 +1225,6 @@ static int do_hda_entry(const char *filename, void *symval, char *alias) add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("hdaudio", hda_device_id, do_hda_entry); /* Looks like: sdw:mNpN */ static int do_sdw_entry(const char *filename, void *symval, char *alias) @@ -1324,7 +1239,6 @@ static int do_sdw_entry(const char *filename, void *symval, char *alias) add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("sdw", sdw_device_id, do_sdw_entry); /* Looks like: fsl-mc:vNdN */ static int do_fsl_mc_entry(const char *filename, void *symval, @@ -1336,7 +1250,6 @@ static int do_fsl_mc_entry(const char *filename, void *symval, sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type); return 1; } -ADD_TO_DEVTABLE("fslmc", fsl_mc_device_id, do_fsl_mc_entry); /* Looks like: tbsvc:kSpNvNrN */ static int do_tbsvc_entry(const char *filename, void *symval, char *alias) @@ -1361,7 +1274,6 @@ static int do_tbsvc_entry(const char *filename, void *symval, char *alias) add_wildcard(alias); return 1; } -ADD_TO_DEVTABLE("tbsvc", tb_service_id, do_tbsvc_entry); /* Looks like: typec:idNmN */ static int do_typec_entry(const char *filename, void *symval, char *alias) @@ -1374,7 +1286,6 @@ static int do_typec_entry(const char *filename, void *symval, char *alias) return 1; } -ADD_TO_DEVTABLE("typec", typec_device_id, do_typec_entry); /* Does namelen bytes of name exactly match the symbol? */ static bool sym_is(const char *name, unsigned namelen, const char *symbol) @@ -1407,6 +1318,48 @@ static void do_table(void *symval, unsigned long size, } } +static const struct devtable devtable[] = { + {"hid", SIZE_hid_device_id, do_hid_entry}, + {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry}, + {"pci", SIZE_pci_device_id, do_pci_entry}, + {"ccw", SIZE_ccw_device_id, do_ccw_entry}, + {"ap", SIZE_ap_device_id, do_ap_entry}, + {"css", SIZE_css_device_id, do_css_entry}, + {"serio", SIZE_serio_device_id, do_serio_entry}, + {"acpi", SIZE_acpi_device_id, do_acpi_entry}, + {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry}, + {"vio", SIZE_vio_device_id, do_vio_entry}, + {"input", SIZE_input_device_id, do_input_entry}, + {"eisa", SIZE_eisa_device_id, do_eisa_entry}, + {"parisc", SIZE_parisc_device_id, do_parisc_entry}, + {"sdio", SIZE_sdio_device_id, do_sdio_entry}, + {"ssb", SIZE_ssb_device_id, do_ssb_entry}, + {"bcma", SIZE_bcma_device_id, do_bcma_entry}, + {"virtio", SIZE_virtio_device_id, do_virtio_entry}, + {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry}, + {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry}, + {"i2c", SIZE_i2c_device_id, do_i2c_entry}, + {"spi", SIZE_spi_device_id, do_spi_entry}, + {"dmi", SIZE_dmi_system_id, do_dmi_entry}, + {"platform", SIZE_platform_device_id, do_platform_entry}, + {"mdio", SIZE_mdio_device_id, do_mdio_entry}, + {"zorro", SIZE_zorro_device_id, do_zorro_entry}, + {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry}, + {"ipack", SIZE_ipack_device_id, do_ipack_entry}, + {"amba", SIZE_amba_id, do_amba_entry}, + {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry}, + {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry}, + {"cpu", SIZE_cpu_feature, do_cpu_entry}, + {"mei", SIZE_mei_cl_device_id, do_mei_entry}, + {"rapidio", SIZE_rio_device_id, do_rio_entry}, + {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry}, + {"hdaudio", SIZE_hda_device_id, do_hda_entry}, + {"sdw", SIZE_sdw_device_id, do_sdw_entry}, + {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry}, + {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry}, + {"typec", SIZE_typec_device_id, do_typec_entry}, +}; + /* Create MODULE_ALIAS() statements. * At this time, we cannot write the actual output C source yet, * so we write into the mod->dev_table_buf buffer. */ @@ -1460,13 +1413,14 @@ void handle_moddevtable(struct module *mod, struct elf_info *info, else if (sym_is(name, namelen, "pnp_card")) do_pnp_card_entries(symval, sym->st_size, mod); else { - struct devtable **p; - INIT_SECTION(__devtable); + int i; + + for (i = 0; i < ARRAY_SIZE(devtable); i++) { + const struct devtable *p = &devtable[i]; - for (p = __start___devtable; p < __stop___devtable; p++) { - if (sym_is(name, namelen, (*p)->device_id)) { - do_table(symval, sym->st_size, (*p)->id_size, - (*p)->device_id, (*p)->function, mod); + if (sym_is(name, namelen, p->device_id)) { + do_table(symval, sym->st_size, p->id_size, + p->device_id, p->function, mod); break; } }
Commit e49ce14150c6 ("modpost: use linker section to generate table.") was not so cool as we had expected because it ended up with ugly section hacks when commit dd2a3acaecd7 ("mod/file2alias: make modpost compile on darwin again") came in. Given a certain degree of unknowledge about the link stage of host programs, I really want to see simple, stupid table lookup so that this works in the same way regardless of the underlying executable binary format. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> --- scripts/mod/file2alias.c | 144 ++++++++++++++++------------------------------- 1 file changed, 49 insertions(+), 95 deletions(-)