diff options
Diffstat (limited to 'arch/x86/ia32/ia32_binfmt.c')
| -rw-r--r-- | arch/x86/ia32/ia32_binfmt.c | 285 |
1 files changed, 0 insertions, 285 deletions
diff --git a/arch/x86/ia32/ia32_binfmt.c b/arch/x86/ia32/ia32_binfmt.c deleted file mode 100644 index 55822d2cf053..000000000000 --- a/arch/x86/ia32/ia32_binfmt.c +++ /dev/null @@ -1,285 +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/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 <linux/elfcore-compat.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> - -#undef ELF_ARCH -#undef ELF_CLASS -#define ELF_CLASS ELFCLASS32 -#define ELF_ARCH EM_386 - -#undef elfhdr -#undef elf_phdr -#undef elf_note -#undef elf_addr_t -#define elfhdr elf32_hdr -#define elf_phdr elf32_phdr -#define elf_note elf32_note -#define elf_addr_t Elf32_Off - -#define ELF_NAME "elf/i386" - -#define AT_SYSINFO 32 -#define AT_SYSINFO_EHDR 33 - -int sysctl_vsyscall32 = 1; - -#undef ARCH_DLINFO -#define ARCH_DLINFO do { \ - if (sysctl_vsyscall32) { \ - current->mm->context.vdso = (void *)VSYSCALL32_BASE; \ - NEW_AUX_ENT(AT_SYSINFO, (u32)(u64)VSYSCALL32_VSYSCALL); \ - NEW_AUX_ENT(AT_SYSINFO_EHDR, VSYSCALL32_BASE); \ - } \ -} while(0) - -struct file; - -#define IA32_EMULATOR 1 - -#undef ELF_ET_DYN_BASE - -#define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000) - -#define jiffies_to_timeval(a,b) do { (b)->tv_usec = 0; (b)->tv_sec = (a)/HZ; }while(0) - -#define _GET_SEG(x) \ - ({ __u32 seg; asm("movl %%" __stringify(x) ",%0" : "=r"(seg)); seg; }) - -/* Assumes current==process to be dumped */ -#undef ELF_CORE_COPY_REGS -#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 elf_prstatus compat_elf_prstatus -#define elf_prpsinfo compat_elf_prpsinfo -#define elf_fpregset_t struct user_i387_ia32_struct -#define elf_fpxregset_t struct user32_fxsr_struct -#define user user32 - -#undef elf_read_implies_exec -#define elf_read_implies_exec(ex, executable_stack) (executable_stack != EXSTACK_DISABLE_X) - -#define elf_core_copy_regs elf32_core_copy_regs -static inline void elf32_core_copy_regs(compat_elf_gregset_t *elfregs, - struct pt_regs *regs) -{ - ELF_CORE_COPY_REGS((&elfregs->ebx), regs) -} - -#define elf_core_copy_task_regs elf32_core_copy_task_regs -static inline int elf32_core_copy_task_regs(struct task_struct *t, - compat_elf_gregset_t* elfregs) -{ - struct pt_regs *pp = task_pt_regs(t); - ELF_CORE_COPY_REGS((&elfregs->ebx), pp); - /* fix wrong segments */ - elfregs->ds = t->thread.ds; - elfregs->fs = t->thread.fsindex; - elfregs->gs = t->thread.gsindex; - elfregs->es = t->thread.es; - return 1; -} - -#define elf_core_copy_task_fpregs elf32_core_copy_task_fpregs -static inline int -elf32_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 = task_pt_regs(tsk); - 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 -#define ELF_CORE_XFPREG_TYPE NT_PRXFPREG -#define elf_core_copy_task_xfpregs elf32_core_copy_task_xfpregs -static inline int -elf32_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu) -{ - struct pt_regs *regs = task_pt_regs(t); - 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; - -#undef ELF_EXEC_PAGESIZE -#undef ELF_HWCAP -#undef ELF_PLATFORM -#undef SET_PERSONALITY -#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 - -#undef ELF_PLAT_INIT -#define ELF_PLAT_INIT(r, load_addr) elf32_init(r) - -#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) - - -#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 - -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; -} - -#ifdef CONFIG_SYSCTL -/* Register vsyscall32 into the ABI table */ -#include <linux/sysctl.h> - -static ctl_table abi_table2[] = { - { - .procname = "vsyscall32", - .data = &sysctl_vsyscall32, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec - }, - {} -}; - -static ctl_table abi_root_table2[] = { - { - .ctl_name = CTL_ABI, - .procname = "abi", - .mode = 0555, - .child = abi_table2 - }, - {} -}; - -static __init int ia32_binfmt_init(void) -{ - register_sysctl_table(abi_root_table2); - return 0; -} -__initcall(ia32_binfmt_init); -#endif |
