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Diffstat (limited to 'arch/x86_64/ia32/ia32_binfmt.c')
-rw-r--r--arch/x86_64/ia32/ia32_binfmt.c435
1 files changed, 0 insertions, 435 deletions
diff --git a/arch/x86_64/ia32/ia32_binfmt.c b/arch/x86_64/ia32/ia32_binfmt.c
deleted file mode 100644
index c8131f342cf..00000000000
--- a/arch/x86_64/ia32/ia32_binfmt.c
+++ /dev/null
@@ -1,435 +0,0 @@
-/*
- * Written 2000,2002 by Andi Kleen.
- *
- * Loosely based on the sparc64 and IA64 32bit emulation loaders.
- * This tricks binfmt_elf.c into loading 32bit binaries using lots
- * of ugly preprocessor tricks. Talk about very very poor man's inheritance.
- */
-#include <linux/types.h>
-#include <linux/config.h>
-#include <linux/stddef.h>
-#include <linux/rwsem.h>
-#include <linux/sched.h>
-#include <linux/compat.h>
-#include <linux/string.h>
-#include <linux/binfmts.h>
-#include <linux/mm.h>
-#include <linux/security.h>
-
-#include <asm/segment.h>
-#include <asm/ptrace.h>
-#include <asm/processor.h>
-#include <asm/user32.h>
-#include <asm/sigcontext32.h>
-#include <asm/fpu32.h>
-#include <asm/i387.h>
-#include <asm/uaccess.h>
-#include <asm/ia32.h>
-#include <asm/vsyscall32.h>
-
-#define ELF_NAME "elf/i386"
-
-#define AT_SYSINFO 32
-#define AT_SYSINFO_EHDR 33
-
-int sysctl_vsyscall32 = 1;
-
-#define ARCH_DLINFO do { \
- if (sysctl_vsyscall32) { \
- NEW_AUX_ENT(AT_SYSINFO, (u32)(u64)VSYSCALL32_VSYSCALL); \
- NEW_AUX_ENT(AT_SYSINFO_EHDR, VSYSCALL32_BASE); \
- } \
-} while(0)
-
-struct file;
-struct elf_phdr;
-
-#define IA32_EMULATOR 1
-
-#define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000)
-
-#undef ELF_ARCH
-#define ELF_ARCH EM_386
-
-#undef ELF_CLASS
-#define ELF_CLASS ELFCLASS32
-
-#define ELF_DATA ELFDATA2LSB
-
-#define USE_ELF_CORE_DUMP 1
-
-/* Overwrite elfcore.h */
-#define _LINUX_ELFCORE_H 1
-typedef unsigned int elf_greg_t;
-
-#define ELF_NGREG (sizeof (struct user_regs_struct32) / sizeof(elf_greg_t))
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-
-/*
- * These macros parameterize elf_core_dump in fs/binfmt_elf.c to write out
- * extra segments containing the vsyscall DSO contents. Dumping its
- * contents makes post-mortem fully interpretable later without matching up
- * the same kernel and hardware config to see what PC values meant.
- * Dumping its extra ELF program headers includes all the other information
- * a debugger needs to easily find how the vsyscall DSO was being used.
- */
-#define ELF_CORE_EXTRA_PHDRS (VSYSCALL32_EHDR->e_phnum)
-#define ELF_CORE_WRITE_EXTRA_PHDRS \
-do { \
- const struct elf32_phdr *const vsyscall_phdrs = \
- (const struct elf32_phdr *) (VSYSCALL32_BASE \
- + VSYSCALL32_EHDR->e_phoff); \
- int i; \
- Elf32_Off ofs = 0; \
- for (i = 0; i < VSYSCALL32_EHDR->e_phnum; ++i) { \
- struct elf32_phdr phdr = vsyscall_phdrs[i]; \
- if (phdr.p_type == PT_LOAD) { \
- BUG_ON(ofs != 0); \
- ofs = phdr.p_offset = offset; \
- phdr.p_memsz = PAGE_ALIGN(phdr.p_memsz); \
- phdr.p_filesz = phdr.p_memsz; \
- offset += phdr.p_filesz; \
- } \
- else \
- phdr.p_offset += ofs; \
- phdr.p_paddr = 0; /* match other core phdrs */ \
- DUMP_WRITE(&phdr, sizeof(phdr)); \
- } \
-} while (0)
-#define ELF_CORE_WRITE_EXTRA_DATA \
-do { \
- const struct elf32_phdr *const vsyscall_phdrs = \
- (const struct elf32_phdr *) (VSYSCALL32_BASE \
- + VSYSCALL32_EHDR->e_phoff); \
- int i; \
- for (i = 0; i < VSYSCALL32_EHDR->e_phnum; ++i) { \
- if (vsyscall_phdrs[i].p_type == PT_LOAD) \
- DUMP_WRITE((void *) (u64) vsyscall_phdrs[i].p_vaddr, \
- PAGE_ALIGN(vsyscall_phdrs[i].p_memsz)); \
- } \
-} while (0)
-
-struct elf_siginfo
-{
- int si_signo; /* signal number */
- int si_code; /* extra code */
- int si_errno; /* errno */
-};
-
-#define jiffies_to_timeval(a,b) do { (b)->tv_usec = 0; (b)->tv_sec = (a)/HZ; }while(0)
-
-struct elf_prstatus
-{
- struct elf_siginfo pr_info; /* Info associated with signal */
- short pr_cursig; /* Current signal */
- unsigned int pr_sigpend; /* Set of pending signals */
- unsigned int pr_sighold; /* Set of held signals */
- pid_t pr_pid;
- pid_t pr_ppid;
- pid_t pr_pgrp;
- pid_t pr_sid;
- struct compat_timeval pr_utime; /* User time */
- struct compat_timeval pr_stime; /* System time */
- struct compat_timeval pr_cutime; /* Cumulative user time */
- struct compat_timeval pr_cstime; /* Cumulative system time */
- elf_gregset_t pr_reg; /* GP registers */
- int pr_fpvalid; /* True if math co-processor being used. */
-};
-
-#define ELF_PRARGSZ (80) /* Number of chars for args */
-
-struct elf_prpsinfo
-{
- char pr_state; /* numeric process state */
- char pr_sname; /* char for pr_state */
- char pr_zomb; /* zombie */
- char pr_nice; /* nice val */
- unsigned int pr_flag; /* flags */
- __u16 pr_uid;
- __u16 pr_gid;
- pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
- /* Lots missing */
- char pr_fname[16]; /* filename of executable */
- char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
-};
-
-#define __STR(x) #x
-#define STR(x) __STR(x)
-
-#define _GET_SEG(x) \
- ({ __u32 seg; asm("movl %%" STR(x) ",%0" : "=r"(seg)); seg; })
-
-/* Assumes current==process to be dumped */
-#define ELF_CORE_COPY_REGS(pr_reg, regs) \
- pr_reg[0] = regs->rbx; \
- pr_reg[1] = regs->rcx; \
- pr_reg[2] = regs->rdx; \
- pr_reg[3] = regs->rsi; \
- pr_reg[4] = regs->rdi; \
- pr_reg[5] = regs->rbp; \
- pr_reg[6] = regs->rax; \
- pr_reg[7] = _GET_SEG(ds); \
- pr_reg[8] = _GET_SEG(es); \
- pr_reg[9] = _GET_SEG(fs); \
- pr_reg[10] = _GET_SEG(gs); \
- pr_reg[11] = regs->orig_rax; \
- pr_reg[12] = regs->rip; \
- pr_reg[13] = regs->cs; \
- pr_reg[14] = regs->eflags; \
- pr_reg[15] = regs->rsp; \
- pr_reg[16] = regs->ss;
-
-#define user user32
-
-#define __ASM_X86_64_ELF_H 1
-#define elf_read_implies_exec(ex, have_pt_gnu_stack) (!(have_pt_gnu_stack))
-//#include <asm/ia32.h>
-#include <linux/elf.h>
-
-typedef struct user_i387_ia32_struct elf_fpregset_t;
-typedef struct user32_fxsr_struct elf_fpxregset_t;
-
-
-static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
-{
- ELF_CORE_COPY_REGS((*elfregs), regs)
-}
-
-static inline int elf_core_copy_task_regs(struct task_struct *t, elf_gregset_t* elfregs)
-{
- struct pt_regs *pp = (struct pt_regs *)(t->thread.rsp0);
- --pp;
- ELF_CORE_COPY_REGS((*elfregs), pp);
- /* fix wrong segments */
- (*elfregs)[7] = t->thread.ds;
- (*elfregs)[9] = t->thread.fsindex;
- (*elfregs)[10] = t->thread.gsindex;
- (*elfregs)[8] = t->thread.es;
- return 1;
-}
-
-static inline int
-elf_core_copy_task_fpregs(struct task_struct *tsk, struct pt_regs *regs, elf_fpregset_t *fpu)
-{
- struct _fpstate_ia32 *fpstate = (void*)fpu;
- mm_segment_t oldfs = get_fs();
-
- if (!tsk_used_math(tsk))
- return 0;
- if (!regs)
- regs = (struct pt_regs *)tsk->thread.rsp0;
- --regs;
- if (tsk == current)
- unlazy_fpu(tsk);
- set_fs(KERNEL_DS);
- save_i387_ia32(tsk, fpstate, regs, 1);
- /* Correct for i386 bug. It puts the fop into the upper 16bits of
- the tag word (like FXSAVE), not into the fcs*/
- fpstate->cssel |= fpstate->tag & 0xffff0000;
- set_fs(oldfs);
- return 1;
-}
-
-#define ELF_CORE_COPY_XFPREGS 1
-static inline int
-elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu)
-{
- struct pt_regs *regs = ((struct pt_regs *)(t->thread.rsp0))-1;
- if (!tsk_used_math(t))
- return 0;
- if (t == current)
- unlazy_fpu(t);
- memcpy(xfpu, &t->thread.i387.fxsave, sizeof(elf_fpxregset_t));
- xfpu->fcs = regs->cs;
- xfpu->fos = t->thread.ds; /* right? */
- return 1;
-}
-
-#undef elf_check_arch
-#define elf_check_arch(x) \
- ((x)->e_machine == EM_386)
-
-extern int force_personality32;
-
-#define ELF_EXEC_PAGESIZE PAGE_SIZE
-#define ELF_HWCAP (boot_cpu_data.x86_capability[0])
-#define ELF_PLATFORM ("i686")
-#define SET_PERSONALITY(ex, ibcs2) \
-do { \
- unsigned long new_flags = 0; \
- if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
- new_flags = _TIF_IA32; \
- if ((current_thread_info()->flags & _TIF_IA32) \
- != new_flags) \
- set_thread_flag(TIF_ABI_PENDING); \
- else \
- clear_thread_flag(TIF_ABI_PENDING); \
- /* XXX This overwrites the user set personality */ \
- current->personality |= force_personality32; \
-} while (0)
-
-/* Override some function names */
-#define elf_format elf32_format
-
-#define init_elf_binfmt init_elf32_binfmt
-#define exit_elf_binfmt exit_elf32_binfmt
-
-#define load_elf_binary load_elf32_binary
-
-#define ELF_PLAT_INIT(r, load_addr) elf32_init(r)
-#define setup_arg_pages(bprm, stack_top, exec_stack) \
- ia32_setup_arg_pages(bprm, stack_top, exec_stack)
-int ia32_setup_arg_pages(struct linux_binprm *bprm, unsigned long stack_top, int executable_stack);
-
-#undef start_thread
-#define start_thread(regs,new_rip,new_rsp) do { \
- asm volatile("movl %0,%%fs" :: "r" (0)); \
- asm volatile("movl %0,%%es; movl %0,%%ds": :"r" (__USER32_DS)); \
- load_gs_index(0); \
- (regs)->rip = (new_rip); \
- (regs)->rsp = (new_rsp); \
- (regs)->eflags = 0x200; \
- (regs)->cs = __USER32_CS; \
- (regs)->ss = __USER32_DS; \
- set_fs(USER_DS); \
-} while(0)
-
-
-#define elf_map elf32_map
-
-#include <linux/module.h>
-
-MODULE_DESCRIPTION("Binary format loader for compatibility with IA32 ELF binaries.");
-MODULE_AUTHOR("Eric Youngdale, Andi Kleen");
-
-#undef MODULE_DESCRIPTION
-#undef MODULE_AUTHOR
-
-#define elf_addr_t __u32
-
-static void elf32_init(struct pt_regs *);
-
-#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
-#define arch_setup_additional_pages syscall32_setup_pages
-extern int syscall32_setup_pages(struct linux_binprm *, int exstack);
-
-#include "../../../fs/binfmt_elf.c"
-
-static void elf32_init(struct pt_regs *regs)
-{
- struct task_struct *me = current;
- regs->rdi = 0;
- regs->rsi = 0;
- regs->rdx = 0;
- regs->rcx = 0;
- regs->rax = 0;
- regs->rbx = 0;
- regs->rbp = 0;
- regs->r8 = regs->r9 = regs->r10 = regs->r11 = regs->r12 =
- regs->r13 = regs->r14 = regs->r15 = 0;
- me->thread.fs = 0;
- me->thread.gs = 0;
- me->thread.fsindex = 0;
- me->thread.gsindex = 0;
- me->thread.ds = __USER_DS;
- me->thread.es = __USER_DS;
-}
-
-int setup_arg_pages(struct linux_binprm *bprm, unsigned long stack_top, int executable_stack)
-{
- unsigned long stack_base;
- struct vm_area_struct *mpnt;
- struct mm_struct *mm = current->mm;
- int i, ret;
-
- stack_base = IA32_STACK_TOP - MAX_ARG_PAGES * PAGE_SIZE;
- mm->arg_start = bprm->p + stack_base;
-
- bprm->p += stack_base;
- if (bprm->loader)
- bprm->loader += stack_base;
- bprm->exec += stack_base;
-
- mpnt = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
- if (!mpnt)
- return -ENOMEM;
-
- if (security_vm_enough_memory((IA32_STACK_TOP - (PAGE_MASK & (unsigned long) bprm->p))>>PAGE_SHIFT)) {
- kmem_cache_free(vm_area_cachep, mpnt);
- return -ENOMEM;
- }
-
- memset(mpnt, 0, sizeof(*mpnt));
-
- down_write(&mm->mmap_sem);
- {
- mpnt->vm_mm = mm;
- mpnt->vm_start = PAGE_MASK & (unsigned long) bprm->p;
- mpnt->vm_end = IA32_STACK_TOP;
- if (executable_stack == EXSTACK_ENABLE_X)
- mpnt->vm_flags = VM_STACK_FLAGS | VM_EXEC;
- else if (executable_stack == EXSTACK_DISABLE_X)
- mpnt->vm_flags = VM_STACK_FLAGS & ~VM_EXEC;
- else
- mpnt->vm_flags = VM_STACK_FLAGS;
- mpnt->vm_page_prot = (mpnt->vm_flags & VM_EXEC) ?
- PAGE_COPY_EXEC : PAGE_COPY;
- if ((ret = insert_vm_struct(mm, mpnt))) {
- up_write(&mm->mmap_sem);
- kmem_cache_free(vm_area_cachep, mpnt);
- return ret;
- }
- mm->stack_vm = mm->total_vm = vma_pages(mpnt);
- }
-
- for (i = 0 ; i < MAX_ARG_PAGES ; i++) {
- struct page *page = bprm->page[i];
- if (page) {
- bprm->page[i] = NULL;
- install_arg_page(mpnt, page, stack_base);
- }
- stack_base += PAGE_SIZE;
- }
- up_write(&mm->mmap_sem);
-
- return 0;
-}
-
-static unsigned long
-elf32_map (struct file *filep, unsigned long addr, struct elf_phdr *eppnt, int prot, int type)
-{
- unsigned long map_addr;
- struct task_struct *me = current;
-
- down_write(&me->mm->mmap_sem);
- map_addr = do_mmap(filep, ELF_PAGESTART(addr),
- eppnt->p_filesz + ELF_PAGEOFFSET(eppnt->p_vaddr), prot,
- type,
- eppnt->p_offset - ELF_PAGEOFFSET(eppnt->p_vaddr));
- up_write(&me->mm->mmap_sem);
- return(map_addr);
-}
-
-#ifdef CONFIG_SYSCTL
-/* Register vsyscall32 into the ABI table */
-#include <linux/sysctl.h>
-
-static ctl_table abi_table2[] = {
- { 99, "vsyscall32", &sysctl_vsyscall32, sizeof(int), 0644, NULL,
- proc_dointvec },
- { 0, }
-};
-
-static ctl_table abi_root_table2[] = {
- { .ctl_name = CTL_ABI, .procname = "abi", .mode = 0555,
- .child = abi_table2 },
- { 0 },
-};
-
-static __init int ia32_binfmt_init(void)
-{
- register_sysctl_table(abi_root_table2, 1);
- return 0;
-}
-__initcall(ia32_binfmt_init);
-#endif
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