+++ /dev/null
-/*
- * linux/fs/binfmt_som.c
- *
- * These are the functions used to load SOM format executables as used
- * by HP-UX.
- *
- * Copyright 1999 Matthew Wilcox <willy@bofh.ai>
- * based on binfmt_elf which is
- * Copyright 1993, 1994: Eric Youngdale (ericy@cais.com).
- */
-
-#include <linux/module.h>
-
-#include <linux/fs.h>
-#include <linux/stat.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/mman.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/binfmts.h>
-#include <linux/som.h>
-#include <linux/string.h>
-#include <linux/file.h>
-#include <linux/fcntl.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/shm.h>
-#include <linux/personality.h>
-#include <linux/init.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-
-
-#include <linux/elf.h>
-
-static int load_som_binary(struct linux_binprm * bprm);
-static int load_som_library(struct file *);
-
-/*
- * If we don't support core dumping, then supply a NULL so we
- * don't even try.
- */
-#if 0
-static int som_core_dump(struct coredump_params *cprm);
-#else
-#define som_core_dump NULL
-#endif
-
-#define SOM_PAGESTART(_v) ((_v) & ~(unsigned long)(SOM_PAGESIZE-1))
-#define SOM_PAGEOFFSET(_v) ((_v) & (SOM_PAGESIZE-1))
-#define SOM_PAGEALIGN(_v) (((_v) + SOM_PAGESIZE - 1) & ~(SOM_PAGESIZE - 1))
-
-static struct linux_binfmt som_format = {
- .module = THIS_MODULE,
- .load_binary = load_som_binary,
- .load_shlib = load_som_library,
- .core_dump = som_core_dump,
- .min_coredump = SOM_PAGESIZE
-};
-
-/*
- * create_som_tables() parses the env- and arg-strings in new user
- * memory and creates the pointer tables from them, and puts their
- * addresses on the "stack", returning the new stack pointer value.
- */
-static void create_som_tables(struct linux_binprm *bprm)
-{
- char **argv, **envp;
- int argc = bprm->argc;
- int envc = bprm->envc;
- unsigned long p;
- unsigned long *sp;
-
- /* Word-align the stack pointer */
- sp = (unsigned long *)((bprm->p + 3) & ~3);
-
- envp = (char **) sp;
- sp += envc + 1;
- argv = (char **) sp;
- sp += argc + 1;
-
- __put_user((unsigned long) envp,++sp);
- __put_user((unsigned long) argv,++sp);
-
- __put_user(argc, ++sp);
-
- bprm->p = (unsigned long) sp;
-
- p = current->mm->arg_start;
- while (argc-- > 0) {
- __put_user((char *)p,argv++);
- p += strlen_user((char *)p);
- }
- __put_user(NULL, argv);
- current->mm->arg_end = current->mm->env_start = p;
- while (envc-- > 0) {
- __put_user((char *)p,envp++);
- p += strlen_user((char *)p);
- }
- __put_user(NULL, envp);
- current->mm->env_end = p;
-}
-
-static int check_som_header(struct som_hdr *som_ex)
-{
- int *buf = (int *)som_ex;
- int i, ck;
-
- if (som_ex->system_id != SOM_SID_PARISC_1_0 &&
- som_ex->system_id != SOM_SID_PARISC_1_1 &&
- som_ex->system_id != SOM_SID_PARISC_2_0)
- return -ENOEXEC;
-
- if (som_ex->a_magic != SOM_EXEC_NONSHARE &&
- som_ex->a_magic != SOM_EXEC_SHARE &&
- som_ex->a_magic != SOM_EXEC_DEMAND)
- return -ENOEXEC;
-
- if (som_ex->version_id != SOM_ID_OLD &&
- som_ex->version_id != SOM_ID_NEW)
- return -ENOEXEC;
-
- ck = 0;
- for (i=0; i<32; i++)
- ck ^= buf[i];
- if (ck != 0)
- return -ENOEXEC;
-
- return 0;
-}
-
-static int map_som_binary(struct file *file,
- const struct som_exec_auxhdr *hpuxhdr)
-{
- unsigned long code_start, code_size, data_start, data_size;
- unsigned long bss_start, som_brk;
- int retval;
- int prot = PROT_READ | PROT_EXEC;
- int flags = MAP_FIXED|MAP_PRIVATE|MAP_DENYWRITE|MAP_EXECUTABLE;
-
- mm_segment_t old_fs = get_fs();
- set_fs(get_ds());
-
- code_start = SOM_PAGESTART(hpuxhdr->exec_tmem);
- code_size = SOM_PAGEALIGN(hpuxhdr->exec_tsize);
- current->mm->start_code = code_start;
- current->mm->end_code = code_start + code_size;
- retval = vm_mmap(file, code_start, code_size, prot,
- flags, SOM_PAGESTART(hpuxhdr->exec_tfile));
- if (retval < 0 && retval > -1024)
- goto out;
-
- data_start = SOM_PAGESTART(hpuxhdr->exec_dmem);
- data_size = SOM_PAGEALIGN(hpuxhdr->exec_dsize);
- current->mm->start_data = data_start;
- current->mm->end_data = bss_start = data_start + data_size;
- retval = vm_mmap(file, data_start, data_size,
- prot | PROT_WRITE, flags,
- SOM_PAGESTART(hpuxhdr->exec_dfile));
- if (retval < 0 && retval > -1024)
- goto out;
-
- som_brk = bss_start + SOM_PAGEALIGN(hpuxhdr->exec_bsize);
- current->mm->start_brk = current->mm->brk = som_brk;
- retval = vm_mmap(NULL, bss_start, som_brk - bss_start,
- prot | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, 0);
- if (retval > 0 || retval < -1024)
- retval = 0;
-out:
- set_fs(old_fs);
- return retval;
-}
-
-
-/*
- * These are the functions used to load SOM executables and shared
- * libraries. There is no binary dependent code anywhere else.
- */
-
-static int
-load_som_binary(struct linux_binprm * bprm)
-{
- int retval;
- unsigned int size;
- unsigned long som_entry;
- struct som_hdr *som_ex;
- struct som_exec_auxhdr *hpuxhdr;
- struct pt_regs *regs = current_pt_regs();
-
- /* Get the exec-header */
- som_ex = (struct som_hdr *) bprm->buf;
-
- retval = check_som_header(som_ex);
- if (retval != 0)
- goto out;
-
- /* Now read in the auxiliary header information */
-
- retval = -ENOMEM;
- size = som_ex->aux_header_size;
- if (size > SOM_PAGESIZE)
- goto out;
- hpuxhdr = kmalloc(size, GFP_KERNEL);
- if (!hpuxhdr)
- goto out;
-
- retval = kernel_read(bprm->file, som_ex->aux_header_location,
- (char *) hpuxhdr, size);
- if (retval != size) {
- if (retval >= 0)
- retval = -EIO;
- goto out_free;
- }
-
- /* Flush all traces of the currently running executable */
- retval = flush_old_exec(bprm);
- if (retval)
- goto out_free;
-
- /* OK, This is the point of no return */
- current->personality = PER_HPUX;
- setup_new_exec(bprm);
-
- /* Set the task size for HP-UX processes such that
- * the gateway page is outside the address space.
- * This can be fixed later, but for now, this is much
- * easier.
- */
-
- current->thread.task_size = 0xc0000000;
-
- /* Set map base to allow enough room for hp-ux heap growth */
-
- current->thread.map_base = 0x80000000;
-
- retval = map_som_binary(bprm->file, hpuxhdr);
- if (retval < 0)
- goto out_free;
-
- som_entry = hpuxhdr->exec_entry;
- kfree(hpuxhdr);
-
- set_binfmt(&som_format);
- install_exec_creds(bprm);
- setup_arg_pages(bprm, STACK_TOP, EXSTACK_DEFAULT);
-
- create_som_tables(bprm);
-
- current->mm->start_stack = bprm->p;
-
-#if 0
- printk("(start_brk) %08lx\n" , (unsigned long) current->mm->start_brk);
- printk("(end_code) %08lx\n" , (unsigned long) current->mm->end_code);
- printk("(start_code) %08lx\n" , (unsigned long) current->mm->start_code);
- printk("(end_data) %08lx\n" , (unsigned long) current->mm->end_data);
- printk("(start_stack) %08lx\n" , (unsigned long) current->mm->start_stack);
- printk("(brk) %08lx\n" , (unsigned long) current->mm->brk);
-#endif
-
- map_hpux_gateway_page(current,current->mm);
-
- start_thread_som(regs, som_entry, bprm->p);
- return 0;
-
- /* error cleanup */
-out_free:
- kfree(hpuxhdr);
-out:
- return retval;
-}
-
-static int load_som_library(struct file *f)
-{
-/* No lib support in SOM yet. gizza chance.. */
- return -ENOEXEC;
-}
- /* Install the SOM loader.
- * N.B. We *rely* on the table being the right size with the
- * right number of free slots...
- */
-
-static int __init init_som_binfmt(void)
-{
- register_binfmt(&som_format);
- return 0;
-}
-
-static void __exit exit_som_binfmt(void)
-{
- /* Remove the SOM loader. */
- unregister_binfmt(&som_format);
-}
-
-core_initcall(init_som_binfmt);
-module_exit(exit_som_binfmt);
-
-MODULE_LICENSE("GPL");
+++ /dev/null
-#ifndef _LINUX_SOM_H
-#define _LINUX_SOM_H
-
-/* File format definition for SOM executables / shared libraries */
-
-/* we need struct timespec */
-#include <linux/time.h>
-
-#define SOM_PAGESIZE 4096
-
-/* this is the SOM header */
-struct som_hdr {
- short system_id; /* magic number - system */
- short a_magic; /* magic number - file type */
- unsigned int version_id; /* versiod ID: YYMMDDHH */
- struct timespec file_time; /* system clock */
- unsigned int entry_space; /* space for entry point */
- unsigned int entry_subspace; /* subspace for entry point */
- unsigned int entry_offset; /* offset of entry point */
- unsigned int aux_header_location; /* auxiliary header location */
- unsigned int aux_header_size; /* auxiliary header size */
- unsigned int som_length; /* length of entire SOM */
- unsigned int presumed_dp; /* compiler's DP value */
- unsigned int space_location; /* space dictionary location */
- unsigned int space_total; /* number of space entries */
- unsigned int subspace_location; /* subspace entries location */
- unsigned int subspace_total; /* number of subspace entries */
- unsigned int loader_fixup_location; /* MPE/iX loader fixup */
- unsigned int loader_fixup_total; /* number of fixup records */
- unsigned int space_strings_location; /* (sub)space names */
- unsigned int space_strings_size; /* size of strings area */
- unsigned int init_array_location; /* reserved */
- unsigned int init_array_total; /* reserved */
- unsigned int compiler_location; /* module dictionary */
- unsigned int compiler_total; /* number of modules */
- unsigned int symbol_location; /* symbol dictionary */
- unsigned int symbol_total; /* number of symbols */
- unsigned int fixup_request_location; /* fixup requests */
- unsigned int fixup_request_total; /* number of fixup requests */
- unsigned int symbol_strings_location;/* module & symbol names area */
- unsigned int symbol_strings_size; /* size of strings area */
- unsigned int unloadable_sp_location; /* unloadable spaces location */
- unsigned int unloadable_sp_size; /* size of data */
- unsigned int checksum;
-};
-
-/* values for system_id */
-
-#define SOM_SID_PARISC_1_0 0x020b
-#define SOM_SID_PARISC_1_1 0x0210
-#define SOM_SID_PARISC_2_0 0x0214
-
-/* values for a_magic */
-
-#define SOM_LIB_EXEC 0x0104
-#define SOM_RELOCATABLE 0x0106
-#define SOM_EXEC_NONSHARE 0x0107
-#define SOM_EXEC_SHARE 0x0108
-#define SOM_EXEC_DEMAND 0x010B
-#define SOM_LIB_DYN 0x010D
-#define SOM_LIB_SHARE 0x010E
-#define SOM_LIB_RELOC 0x0619
-
-/* values for version_id. Decimal not hex, yes. Grr. */
-
-#define SOM_ID_OLD 85082112
-#define SOM_ID_NEW 87102412
-
-struct aux_id {
- unsigned int mandatory :1; /* the linker must understand this */
- unsigned int copy :1; /* Must be copied by the linker */
- unsigned int append :1; /* Must be merged by the linker */
- unsigned int ignore :1; /* Discard section if unknown */
- unsigned int reserved :12;
- unsigned int type :16; /* Header type */
- unsigned int length; /* length of _following_ data */
-};
-
-/* The Exec Auxiliary Header. Called The HP-UX Header within HP apparently. */
-struct som_exec_auxhdr {
- struct aux_id som_auxhdr;
- int exec_tsize; /* Text size in bytes */
- int exec_tmem; /* Address to load text at */
- int exec_tfile; /* Location of text in file */
- int exec_dsize; /* Data size in bytes */
- int exec_dmem; /* Address to load data at */
- int exec_dfile; /* Location of data in file */
- int exec_bsize; /* Uninitialised data (bss) */
- int exec_entry; /* Address to start executing */
- int exec_flags; /* loader flags */
- int exec_bfill; /* initialisation value for bss */
-};
-
-/* Oh, the things people do to avoid casts. Shame it'll break with gcc's
- * new aliasing rules really.
- */
-union name_pt {
- char * n_name;
- unsigned int n_strx;
-};
-
-/* The Space Dictionary */
-struct space_dictionary_record {
- union name_pt name; /* index to subspace name */
- unsigned int is_loadable :1; /* loadable */
- unsigned int is_defined :1; /* defined within file */
- unsigned int is_private :1; /* not sharable */
- unsigned int has_intermediate_code :1; /* contains intermediate code */
- unsigned int is_tspecific :1; /* thread specific */
- unsigned int reserved :11; /* for future expansion */
- unsigned int sort_key :8; /* for linker */
- unsigned int reserved2 :8; /* for future expansion */
-
- int space_number; /* index */
- int subspace_index; /* index into subspace dict */
- unsigned int subspace_quantity; /* number of subspaces */
- int loader_fix_index; /* for loader */
- unsigned int loader_fix_quantity; /* for loader */
- int init_pointer_index; /* data pointer array index */
- unsigned int init_pointer_quantity; /* number of data pointers */
-};
-
-/* The Subspace Dictionary */
-struct subspace_dictionary_record {
- int space_index;
- unsigned int access_control_bits :7;
- unsigned int memory_resident :1;
- unsigned int dup_common :1;
- unsigned int is_common :1;
- unsigned int quadrant :2;
- unsigned int initially_frozen :1;
- unsigned int is_first :1;
- unsigned int code_only :1;
- unsigned int sort_key :8;
- unsigned int replicate_init :1;
- unsigned int continuation :1;
- unsigned int is_tspecific :1;
- unsigned int is_comdat :1;
- unsigned int reserved :4;
-
- int file_loc_init_value;
- unsigned int initialization_length;
- unsigned int subspace_start;
- unsigned int subspace_length;
-
- unsigned int reserved2 :5;
- unsigned int alignment :27;
-
- union name_pt name;
- int fixup_request_index;
- unsigned int fixup_request_quantity;
-};
-
-#endif /* _LINUX_SOM_H */
projects / linux-drm-fsl-dcu.git / commitdiff