diff --git a/sys/kern/subr_module.c b/sys/kern/subr_module.c index 5ab41809aa89..66bf3334b771 100644 --- a/sys/kern/subr_module.c +++ b/sys/kern/subr_module.c @@ -1,573 +1,582 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 1998 Michael Smith * All rights reserved. * Copyright (c) 2020 NetApp Inc. * Copyright (c) 2020 Klara Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include /* * Preloaded module support */ vm_offset_t preload_addr_relocate = 0; caddr_t preload_metadata; /* * Search for the preloaded module (name) */ caddr_t preload_search_by_name(const char *name) { caddr_t curp; uint32_t *hdr; int next; if (preload_metadata != NULL) { curp = preload_metadata; for (;;) { hdr = (uint32_t *)curp; if (hdr[0] == 0 && hdr[1] == 0) break; /* Search for a MODINFO_NAME field */ if ((hdr[0] == MODINFO_NAME) && !strcmp(name, curp + sizeof(uint32_t) * 2)) return(curp); /* skip to next field */ next = sizeof(uint32_t) * 2 + hdr[1]; next = roundup(next, sizeof(u_long)); curp += next; } } return(NULL); } /* * Search for the first preloaded module of (type) */ caddr_t preload_search_by_type(const char *type) { caddr_t curp, lname; uint32_t *hdr; int next; if (preload_metadata != NULL) { curp = preload_metadata; lname = NULL; for (;;) { hdr = (uint32_t *)curp; if (hdr[0] == 0 && hdr[1] == 0) break; /* remember the start of each record */ if (hdr[0] == MODINFO_NAME) lname = curp; /* Search for a MODINFO_TYPE field */ if ((hdr[0] == MODINFO_TYPE) && !strcmp(type, curp + sizeof(uint32_t) * 2)) return(lname); /* skip to next field */ next = sizeof(uint32_t) * 2 + hdr[1]; next = roundup(next, sizeof(u_long)); curp += next; } } return(NULL); } /* * Walk through the preloaded module list */ caddr_t preload_search_next_name(caddr_t base) { caddr_t curp; uint32_t *hdr; int next; if (preload_metadata != NULL) { /* Pick up where we left off last time */ if (base) { /* skip to next field */ curp = base; hdr = (uint32_t *)curp; next = sizeof(uint32_t) * 2 + hdr[1]; next = roundup(next, sizeof(u_long)); curp += next; } else curp = preload_metadata; for (;;) { hdr = (uint32_t *)curp; if (hdr[0] == 0 && hdr[1] == 0) break; /* Found a new record? */ if (hdr[0] == MODINFO_NAME) return curp; /* skip to next field */ next = sizeof(uint32_t) * 2 + hdr[1]; next = roundup(next, sizeof(u_long)); curp += next; } } return(NULL); } /* * Given a preloaded module handle (mod), return a pointer * to the data for the attribute (inf). */ caddr_t preload_search_info(caddr_t mod, int inf) { caddr_t curp; uint32_t *hdr; uint32_t type = 0; int next; if (mod == NULL) return (NULL); curp = mod; for (;;) { hdr = (uint32_t *)curp; /* end of module data? */ if (hdr[0] == 0 && hdr[1] == 0) break; /* * We give up once we've looped back to what we were looking at * first - this should normally be a MODINFO_NAME field. */ if (type == 0) { type = hdr[0]; } else { if (hdr[0] == type) break; } /* * Attribute match? Return pointer to data. * Consumer may safely assume that size value precedes * data. */ if (hdr[0] == inf) return(curp + (sizeof(uint32_t) * 2)); /* skip to next field */ next = sizeof(uint32_t) * 2 + hdr[1]; next = roundup(next, sizeof(u_long)); curp += next; } return(NULL); } /* * Delete a preload record by name. */ void preload_delete_name(const char *name) { caddr_t addr, curp; uint32_t *hdr, sz; int next; int clearing; addr = 0; sz = 0; if (preload_metadata != NULL) { clearing = 0; curp = preload_metadata; for (;;) { hdr = (uint32_t *)curp; if (hdr[0] == MODINFO_NAME || (hdr[0] == 0 && hdr[1] == 0)) { /* Free memory used to store the file. */ if (addr != 0 && sz != 0) kmem_bootstrap_free((vm_offset_t)addr, sz); addr = 0; sz = 0; if (hdr[0] == 0) break; if (!strcmp(name, curp + sizeof(uint32_t) * 2)) clearing = 1; /* got it, start clearing */ else if (clearing) { clearing = 0; /* at next one now.. better stop */ } } if (clearing) { if (hdr[0] == MODINFO_ADDR) addr = *(caddr_t *)(curp + sizeof(uint32_t) * 2); else if (hdr[0] == MODINFO_SIZE) sz = *(uint32_t *)(curp + sizeof(uint32_t) * 2); hdr[0] = MODINFO_EMPTY; } /* skip to next field */ next = sizeof(uint32_t) * 2 + hdr[1]; next = roundup(next, sizeof(u_long)); curp += next; } } } void * preload_fetch_addr(caddr_t mod) { caddr_t *mdp; mdp = (caddr_t *)preload_search_info(mod, MODINFO_ADDR); if (mdp == NULL) return (NULL); return (*mdp + preload_addr_relocate); } size_t preload_fetch_size(caddr_t mod) { size_t *mdp; mdp = (size_t *)preload_search_info(mod, MODINFO_SIZE); if (mdp == NULL) return (0); return (*mdp); } /* Called from locore. Convert physical pointers to kvm. Sigh. */ void preload_bootstrap_relocate(vm_offset_t offset) { caddr_t curp; uint32_t *hdr; vm_offset_t *ptr; int next; if (preload_metadata != NULL) { curp = preload_metadata; for (;;) { hdr = (uint32_t *)curp; if (hdr[0] == 0 && hdr[1] == 0) break; /* Deal with the ones that we know we have to fix */ switch (hdr[0]) { case MODINFO_ADDR: case MODINFO_METADATA|MODINFOMD_FONT: + case MODINFO_METADATA|MODINFOMD_SPLASH: case MODINFO_METADATA|MODINFOMD_SSYM: case MODINFO_METADATA|MODINFOMD_ESYM: ptr = (vm_offset_t *)(curp + (sizeof(uint32_t) * 2)); *ptr += offset; break; } /* The rest is beyond us for now */ /* skip to next field */ next = sizeof(uint32_t) * 2 + hdr[1]; next = roundup(next, sizeof(u_long)); curp += next; } } } /* * Parse the modinfo type and append to the provided sbuf. */ static void preload_modinfo_type(struct sbuf *sbp, int type) { if ((type & MODINFO_METADATA) == 0) { switch (type) { case MODINFO_END: sbuf_cat(sbp, "MODINFO_END"); break; case MODINFO_NAME: sbuf_cat(sbp, "MODINFO_NAME"); break; case MODINFO_TYPE: sbuf_cat(sbp, "MODINFO_TYPE"); break; case MODINFO_ADDR: sbuf_cat(sbp, "MODINFO_ADDR"); break; case MODINFO_SIZE: sbuf_cat(sbp, "MODINFO_SIZE"); break; case MODINFO_EMPTY: sbuf_cat(sbp, "MODINFO_EMPTY"); break; case MODINFO_ARGS: sbuf_cat(sbp, "MODINFO_ARGS"); break; default: sbuf_cat(sbp, "unrecognized modinfo attribute"); } return; } sbuf_cat(sbp, "MODINFO_METADATA | "); switch (type & ~MODINFO_METADATA) { case MODINFOMD_ELFHDR: sbuf_cat(sbp, "MODINFOMD_ELFHDR"); break; case MODINFOMD_SSYM: sbuf_cat(sbp, "MODINFOMD_SSYM"); break; case MODINFOMD_ESYM: sbuf_cat(sbp, "MODINFOMD_ESYM"); break; case MODINFOMD_DYNAMIC: sbuf_cat(sbp, "MODINFOMD_DYNAMIC"); break; case MODINFOMD_ENVP: sbuf_cat(sbp, "MODINFOMD_ENVP"); break; case MODINFOMD_HOWTO: sbuf_cat(sbp, "MODINFOMD_HOWTO"); break; case MODINFOMD_KERNEND: sbuf_cat(sbp, "MODINFOMD_KERNEND"); break; case MODINFOMD_SHDR: sbuf_cat(sbp, "MODINFOMD_SHDR"); break; case MODINFOMD_CTORS_ADDR: sbuf_cat(sbp, "MODINFOMD_CTORS_ADDR"); break; case MODINFOMD_CTORS_SIZE: sbuf_cat(sbp, "MODINFOMD_CTORS_SIZE"); break; case MODINFOMD_FW_HANDLE: sbuf_cat(sbp, "MODINFOMD_FW_HANDLE"); break; case MODINFOMD_KEYBUF: sbuf_cat(sbp, "MODINFOMD_KEYBUF"); break; #ifdef MODINFOMD_SMAP case MODINFOMD_SMAP: sbuf_cat(sbp, "MODINFOMD_SMAP"); break; #endif #ifdef MODINFOMD_SMAP_XATTR case MODINFOMD_SMAP_XATTR: sbuf_cat(sbp, "MODINFOMD_SMAP_XATTR"); break; #endif #ifdef MODINFOMD_DTBP case MODINFOMD_DTBP: sbuf_cat(sbp, "MODINFOMD_DTBP"); break; #endif #ifdef MODINFOMD_EFI_MAP case MODINFOMD_EFI_MAP: sbuf_cat(sbp, "MODINFOMD_EFI_MAP"); break; #endif #ifdef MODINFOMD_EFI_FB case MODINFOMD_EFI_FB: sbuf_cat(sbp, "MODINFOMD_EFI_FB"); break; #endif #ifdef MODINFOMD_MODULEP case MODINFOMD_MODULEP: sbuf_cat(sbp, "MODINFOMD_MODULEP"); break; #endif #ifdef MODINFOMD_VBE_FB case MODINFOMD_VBE_FB: sbuf_cat(sbp, "MODINFOMD_VBE_FB"); break; #endif #ifdef MODINFOMD_FONT case MODINFOMD_FONT: sbuf_cat(sbp, "MODINFOMD_FONT"); break; +#endif +#ifdef MODINFOMD_SPLASH + case MODINFOMD_SPLASH: + sbuf_cat(sbp, "MODINFOMD_SPLASH"); + break; #endif default: sbuf_cat(sbp, "unrecognized metadata type"); } } /* * Print the modinfo value, depending on type. */ static void preload_modinfo_value(struct sbuf *sbp, uint32_t *bptr, int type, int len) { #ifdef __LP64__ #define sbuf_print_vmoffset(sb, o) sbuf_printf(sb, "0x%016lx", o); #else #define sbuf_print_vmoffset(sb, o) sbuf_printf(sb, "0x%08x", o); #endif switch (type) { case MODINFO_NAME: case MODINFO_TYPE: case MODINFO_ARGS: sbuf_printf(sbp, "%s", (char *)bptr); break; case MODINFO_SIZE: case MODINFO_METADATA | MODINFOMD_CTORS_SIZE: sbuf_printf(sbp, "%lu", *(u_long *)bptr); break; case MODINFO_ADDR: case MODINFO_METADATA | MODINFOMD_SSYM: case MODINFO_METADATA | MODINFOMD_ESYM: case MODINFO_METADATA | MODINFOMD_DYNAMIC: case MODINFO_METADATA | MODINFOMD_KERNEND: case MODINFO_METADATA | MODINFOMD_ENVP: case MODINFO_METADATA | MODINFOMD_CTORS_ADDR: #ifdef MODINFOMD_SMAP case MODINFO_METADATA | MODINFOMD_SMAP: #endif #ifdef MODINFOMD_SMAP_XATTR case MODINFO_METADATA | MODINFOMD_SMAP_XATTR: #endif #ifdef MODINFOMD_DTBP case MODINFO_METADATA | MODINFOMD_DTBP: #endif #ifdef MODINFOMD_EFI_FB case MODINFO_METADATA | MODINFOMD_EFI_FB: #endif #ifdef MODINFOMD_VBE_FB case MODINFO_METADATA | MODINFOMD_VBE_FB: #endif #ifdef MODINFOMD_FONT case MODINFO_METADATA | MODINFOMD_FONT: +#endif +#ifdef MODINFOMD_SPLASH + case MODINFO_METADATA | MODINFOMD_SPLASH: #endif sbuf_print_vmoffset(sbp, *(vm_offset_t *)bptr); break; case MODINFO_METADATA | MODINFOMD_HOWTO: sbuf_printf(sbp, "0x%08x", *bptr); break; case MODINFO_METADATA | MODINFOMD_SHDR: case MODINFO_METADATA | MODINFOMD_ELFHDR: case MODINFO_METADATA | MODINFOMD_FW_HANDLE: case MODINFO_METADATA | MODINFOMD_KEYBUF: #ifdef MODINFOMD_EFI_MAP case MODINFO_METADATA | MODINFOMD_EFI_MAP: #endif /* Don't print data buffers. */ sbuf_cat(sbp, "buffer contents omitted"); break; default: break; } #undef sbuf_print_vmoffset } static void preload_dump_internal(struct sbuf *sbp) { uint32_t *bptr, type, len; KASSERT(preload_metadata != NULL, ("%s called without setting up preload_metadata", __func__)); /* * Iterate through the TLV-encoded sections. */ bptr = (uint32_t *)preload_metadata; sbuf_putc(sbp, '\n'); while (bptr[0] != MODINFO_END || bptr[1] != MODINFO_END) { sbuf_printf(sbp, " %p:\n", bptr); type = *bptr++; len = *bptr++; sbuf_printf(sbp, "\ttype:\t(%#04x) ", type); preload_modinfo_type(sbp, type); sbuf_putc(sbp, '\n'); sbuf_printf(sbp, "\tlen:\t%u\n", len); sbuf_cat(sbp, "\tvalue:\t"); preload_modinfo_value(sbp, bptr, type, len); sbuf_putc(sbp, '\n'); bptr += roundup(len, sizeof(u_long)) / sizeof(uint32_t); } } /* * Print the preloaded data to the console. Called from the machine-dependent * initialization routines, e.g. hammer_time(). */ void preload_dump(void) { char buf[512]; struct sbuf sb; /* * This function is expected to be called before malloc is available, * so use a static buffer and struct sbuf. */ sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN); sbuf_set_drain(&sb, sbuf_printf_drain, NULL); preload_dump_internal(&sb); sbuf_finish(&sb); sbuf_delete(&sb); } static int sysctl_preload_dump(SYSCTL_HANDLER_ARGS) { struct sbuf sb; int error; if (preload_metadata == NULL) return (EINVAL); sbuf_new_for_sysctl(&sb, NULL, 512, req); preload_dump_internal(&sb); error = sbuf_finish(&sb); sbuf_delete(&sb); return (error); } SYSCTL_PROC(_debug, OID_AUTO, dump_modinfo, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_preload_dump, "A", "pretty-print the bootloader metadata"); diff --git a/sys/sys/linker.h b/sys/sys/linker.h index 461a32d5529b..be127e6ded48 100644 --- a/sys/sys/linker.h +++ b/sys/sys/linker.h @@ -1,391 +1,392 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 1997-2000 Doug Rabson * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef _SYS_LINKER_H_ #define _SYS_LINKER_H_ #ifdef _KERNEL #include #include #ifdef MALLOC_DECLARE MALLOC_DECLARE(M_LINKER); #endif struct mod_depend; /* * Object representing a file which has been loaded by the linker. */ typedef struct linker_file* linker_file_t; typedef TAILQ_HEAD(, linker_file) linker_file_list_t; typedef caddr_t linker_sym_t; /* opaque symbol */ typedef c_caddr_t c_linker_sym_t; /* const opaque symbol */ typedef int (*linker_function_name_callback_t)(const char *, void *); /* * expanded out linker_sym_t */ typedef struct linker_symval { const char* name; caddr_t value; size_t size; } linker_symval_t; typedef int (*linker_function_nameval_callback_t)(linker_file_t, int, linker_symval_t *, void *); struct common_symbol { STAILQ_ENTRY(common_symbol) link; char* name; caddr_t address; }; struct linker_file { KOBJ_FIELDS; int refs; /* reference count */ int userrefs; /* kldload(2) count */ int flags; #define LINKER_FILE_LINKED 0x1 /* file has been fully linked */ #define LINKER_FILE_MODULES 0x2 /* file has >0 modules at preload */ TAILQ_ENTRY(linker_file) link; /* list of all loaded files */ char* filename; /* file which was loaded */ char* pathname; /* file name with full path */ int id; /* unique id */ caddr_t address; /* load address */ size_t size; /* size of file */ caddr_t ctors_addr; /* address of .ctors/.init_array */ size_t ctors_size; /* size of .ctors/.init_array */ enum { LF_NONE = 0, LF_CTORS, LF_DTORS, } ctors_invoked; /* have we run ctors yet? */ caddr_t dtors_addr; /* address of .dtors/.fini_array */ size_t dtors_size; /* size of .dtors/.fini_array */ int ndeps; /* number of dependencies */ linker_file_t* deps; /* list of dependencies */ STAILQ_HEAD(, common_symbol) common; /* list of common symbols */ TAILQ_HEAD(, module) modules; /* modules in this file */ TAILQ_ENTRY(linker_file) loaded; /* preload dependency support */ int loadcnt; /* load counter value */ /* * Function Boundary Tracing (FBT) or Statically Defined Tracing (SDT) * fields. */ int nenabled; /* number of enabled probes. */ int fbt_nentries; /* number of fbt entries created. */ #ifdef __arm__ caddr_t exidx_addr; /* Unwind data index table start */ size_t exidx_size; /* Unwind data index table size */ #endif }; /* * Object implementing a class of file (a.out, elf, etc.) */ typedef struct linker_class *linker_class_t; typedef TAILQ_HEAD(, linker_class) linker_class_list_t; struct linker_class { KOBJ_CLASS_FIELDS; TAILQ_ENTRY(linker_class) link; /* list of all file classes */ }; /* * Function type used when iterating over the list of linker files. */ typedef int linker_predicate_t(linker_file_t, void *); /* * The "file" for the kernel. */ extern linker_file_t linker_kernel_file; /* * Obtain a reference to a module, loading it if required. */ int linker_reference_module(const char* _modname, struct mod_depend *_verinfo, linker_file_t* _result); /* * Release a reference to a module, unloading it if there are no more * references. Note that one should either provide a module name and * optional version info or a linker file, but not both. */ int linker_release_module(const char *_modname, struct mod_depend *_verinfo, linker_file_t _file); /* * Iterate over all of the currently loaded linker files calling the * predicate function while the function returns 0. Returns the value * returned by the last predicate function. */ int linker_file_foreach(linker_predicate_t *_predicate, void *_context); /* * Lookup a symbol in a file. If deps is TRUE, look in dependencies * if not found in file. */ caddr_t linker_file_lookup_symbol(linker_file_t _file, const char* _name, int _deps); /* * Lookup a linker set in a file. Return pointers to the first entry, * last + 1, and count of entries. Use: for (p = start; p < stop; p++) {} * void *start is really: "struct yoursetmember ***start;" */ int linker_file_lookup_set(linker_file_t _file, const char *_name, void *_start, void *_stop, int *_count); /* * List all functions in a file. */ int linker_file_function_listall(linker_file_t, linker_function_nameval_callback_t, void *); /* * Functions solely for use by the linker class handlers. */ int linker_add_class(linker_class_t _cls); int linker_file_unload(linker_file_t _file, int flags); int linker_load_dependencies(linker_file_t _lf); linker_file_t linker_make_file(const char* _filename, linker_class_t _cls); /* * DDB Helpers, tuned specifically for ddb/db_kld.c */ int linker_ddb_lookup(const char *_symstr, c_linker_sym_t *_sym); int linker_ddb_search_symbol(caddr_t _value, c_linker_sym_t *_sym, long *_diffp); int linker_ddb_symbol_values(c_linker_sym_t _sym, linker_symval_t *_symval); int linker_ddb_search_symbol_name(caddr_t value, char *buf, u_int buflen, long *offset); /* * stack(9) helper for situations where kernel locking is required. */ int linker_search_symbol_name_flags(caddr_t value, char *buf, u_int buflen, long *offset, int flags); int linker_search_symbol_name(caddr_t value, char *buf, u_int buflen, long *offset); /* HWPMC helper */ void *linker_hwpmc_list_objects(void); /* kldload/kldunload syscalls blocking */ #define LINKER_UB_UNLOCK 0x0001 /* busy: unlock kld_sx locked on return */ #define LINKER_UB_LOCKED 0x0002 /* busy/unbusy: kld_sx locked on entry */ #define LINKER_UB_PCATCH 0x0004 /* busy: sleep interruptible */ int linker_kldload_busy(int flags); void linker_kldload_unbusy(int flags); #endif /* _KERNEL */ /* * Module information subtypes */ #define MODINFO_END 0x0000 /* End of list */ #define MODINFO_NAME 0x0001 /* Name of module (string) */ #define MODINFO_TYPE 0x0002 /* Type of module (string) */ #define MODINFO_ADDR 0x0003 /* Loaded address */ #define MODINFO_SIZE 0x0004 /* Size of module */ #define MODINFO_EMPTY 0x0005 /* Has been deleted */ #define MODINFO_ARGS 0x0006 /* Parameters string */ #define MODINFO_METADATA 0x8000 /* Module-specfic */ #define MODINFOMD_AOUTEXEC 0x0001 /* a.out exec header */ #define MODINFOMD_ELFHDR 0x0002 /* ELF header */ #define MODINFOMD_SSYM 0x0003 /* start of symbols */ #define MODINFOMD_ESYM 0x0004 /* end of symbols */ #define MODINFOMD_DYNAMIC 0x0005 /* _DYNAMIC pointer */ #define MODINFOMD_MB2HDR 0x0006 /* MB2 header info */ /* These values are MD on PowerPC */ #if !defined(__powerpc__) #define MODINFOMD_ENVP 0x0006 /* envp[] */ #define MODINFOMD_HOWTO 0x0007 /* boothowto */ #define MODINFOMD_KERNEND 0x0008 /* kernend */ #endif #define MODINFOMD_SHDR 0x0009 /* section header table */ #define MODINFOMD_CTORS_ADDR 0x000a /* address of .ctors */ #define MODINFOMD_CTORS_SIZE 0x000b /* size of .ctors */ #define MODINFOMD_FW_HANDLE 0x000c /* Firmware dependent handle */ #define MODINFOMD_KEYBUF 0x000d /* Crypto key intake buffer */ #define MODINFOMD_FONT 0x000e /* Console font */ +#define MODINFOMD_SPLASH 0x000f /* Console splash screen */ #define MODINFOMD_NOCOPY 0x8000 /* don't copy this metadata to the kernel */ #define MODINFOMD_DEPLIST (0x4001 | MODINFOMD_NOCOPY) /* depends on */ #ifdef _KERNEL #define MD_FETCH(mdp, info, type) ({ \ type *__p; \ __p = (type *)preload_search_info((mdp), MODINFO_METADATA | (info)); \ __p ? *__p : 0; \ }) #endif #define LINKER_HINTS_VERSION 1 /* linker.hints file version */ #define LINKER_HINTS_MAX (1 << 20) /* Allow at most 1MB for linker.hints */ #ifdef _KERNEL /* * Module lookup */ extern vm_offset_t preload_addr_relocate; extern caddr_t preload_metadata; extern void * preload_fetch_addr(caddr_t _mod); extern size_t preload_fetch_size(caddr_t _mod); extern caddr_t preload_search_by_name(const char *_name); extern caddr_t preload_search_by_type(const char *_type); extern caddr_t preload_search_next_name(caddr_t _base); extern caddr_t preload_search_info(caddr_t _mod, int _inf); extern void preload_delete_name(const char *_name); extern void preload_bootstrap_relocate(vm_offset_t _offset); extern void preload_dump(void); #ifdef KLD_DEBUG extern int kld_debug; #define KLD_DEBUG_FILE 1 /* file load/unload */ #define KLD_DEBUG_SYM 2 /* symbol lookup */ #define KLD_DPF(cat, args) \ do { \ if (kld_debug & KLD_DEBUG_##cat) printf args; \ } while (0) #else #define KLD_DPF(cat, args) #endif typedef int elf_lookup_fn(linker_file_t, Elf_Size, int, Elf_Addr *); /* Support functions */ bool elf_is_ifunc_reloc(Elf_Size r_info); int elf_reloc(linker_file_t _lf, Elf_Addr base, const void *_rel, int _type, elf_lookup_fn _lu); int elf_reloc_local(linker_file_t _lf, Elf_Addr base, const void *_rel, int _type, elf_lookup_fn _lu); Elf_Addr elf_relocaddr(linker_file_t _lf, Elf_Addr addr); const Elf_Sym *elf_get_sym(linker_file_t _lf, Elf_Size _symidx); const char *elf_get_symname(linker_file_t _lf, Elf_Size _symidx); void link_elf_ireloc(caddr_t kmdp); #if defined(__aarch64__) || defined(__amd64__) int elf_reloc_late(linker_file_t _lf, Elf_Addr base, const void *_rel, int _type, elf_lookup_fn _lu); void link_elf_late_ireloc(void); #endif typedef struct linker_ctf { const uint8_t *ctftab; /* Decompressed CTF data. */ int ctfcnt; /* Number of CTF data bytes. */ const Elf_Sym *symtab; /* Ptr to the symbol table. */ int nsym; /* Number of symbols. */ const char *strtab; /* Ptr to the string table. */ int strcnt; /* Number of string bytes. */ uint32_t **ctfoffp; /* Ptr to array of obj/fnc offsets. */ uint32_t **typoffp; /* Ptr to array of type offsets. */ long *typlenp; /* Ptr to number of type data entries. */ } linker_ctf_t; int linker_ctf_get(linker_file_t, linker_ctf_t *); int elf_cpu_load_file(linker_file_t); int elf_cpu_unload_file(linker_file_t); int elf_cpu_parse_dynamic(caddr_t, Elf_Dyn *); /* values for type */ #define ELF_RELOC_REL 1 #define ELF_RELOC_RELA 2 /* * This is version 1 of the KLD file status structure. It is identified * by its _size_ in the version field. */ struct kld_file_stat_1 { int version; /* set to sizeof(struct kld_file_stat_1) */ char name[MAXPATHLEN]; int refs; int id; caddr_t address; /* load address */ size_t size; /* size in bytes */ }; #endif /* _KERNEL */ struct kld_file_stat { int version; /* set to sizeof(struct kld_file_stat) */ char name[MAXPATHLEN]; int refs; int id; caddr_t address; /* load address */ size_t size; /* size in bytes */ char pathname[MAXPATHLEN]; }; struct kld_sym_lookup { int version; /* set to sizeof(struct kld_sym_lookup) */ char *symname; /* Symbol name we are looking up */ u_long symvalue; size_t symsize; }; #define KLDSYM_LOOKUP 1 /* * Flags for kldunloadf() and linker_file_unload() */ #define LINKER_UNLOAD_NORMAL 0 #define LINKER_UNLOAD_FORCE 1 #ifndef _KERNEL #include __BEGIN_DECLS int kldload(const char* _file); int kldunload(int _fileid); int kldunloadf(int _fileid, int flags); int kldfind(const char* _file); int kldnext(int _fileid); int kldstat(int _fileid, struct kld_file_stat* _stat); int kldfirstmod(int _fileid); int kldsym(int _fileid, int _cmd, void *_data); __END_DECLS #endif #endif /* !_SYS_LINKER_H_ */ diff --git a/sys/sys/splash.h b/sys/sys/splash.h new file mode 100644 index 000000000000..0bbc5a2bd574 --- /dev/null +++ b/sys/sys/splash.h @@ -0,0 +1,19 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2024 Beckhoff Automation GmbH & Co. KG + * + */ + +#ifndef _SYS_SPLASH_H_ +#define _SYS_SPLASH_H_ + +#include + +struct splash_info { + uint32_t si_width; + uint32_t si_height; + uint32_t si_depth; +}; + +#endif /* _SYS_SPLASH_H_ */