diff options
Diffstat (limited to 'arch/um/os-Linux/sys-i386')
| -rw-r--r-- | arch/um/os-Linux/sys-i386/Makefile | 10 | ||||
| -rw-r--r-- | arch/um/os-Linux/sys-i386/registers.c | 140 | ||||
| -rw-r--r-- | arch/um/os-Linux/sys-i386/tls.c | 34 |
3 files changed, 0 insertions, 184 deletions
diff --git a/arch/um/os-Linux/sys-i386/Makefile b/arch/um/os-Linux/sys-i386/Makefile deleted file mode 100644 index b3213613c41..00000000000 --- a/arch/um/os-Linux/sys-i386/Makefile +++ /dev/null @@ -1,10 +0,0 @@ -# -# Copyright (C) 2000 Jeff Dike (jdike@karaya.com) -# Licensed under the GPL -# - -obj-$(CONFIG_MODE_SKAS) = registers.o tls.o - -USER_OBJS := $(obj-y) - -include arch/um/scripts/Makefile.rules diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-i386/registers.c deleted file mode 100644 index 516f66dd87e..00000000000 --- a/arch/um/os-Linux/sys-i386/registers.c +++ /dev/null @@ -1,140 +0,0 @@ -/* - * Copyright (C) 2004 PathScale, Inc - * Licensed under the GPL - */ - -#include <errno.h> -#include <string.h> -#include <setjmp.h> -#include "sysdep/ptrace_user.h" -#include "sysdep/ptrace.h" -#include "uml-config.h" -#include "skas_ptregs.h" -#include "registers.h" -#include "user.h" - -/* These are set once at boot time and not changed thereafter */ - -static unsigned long exec_regs[HOST_FRAME_SIZE]; -static unsigned long exec_fp_regs[HOST_FP_SIZE]; -static unsigned long exec_fpx_regs[HOST_XFP_SIZE]; -static int have_fpx_regs = 1; - -void init_thread_registers(union uml_pt_regs *to) -{ - memcpy(to->skas.regs, exec_regs, sizeof(to->skas.regs)); - memcpy(to->skas.fp, exec_fp_regs, sizeof(to->skas.fp)); - if(have_fpx_regs) - memcpy(to->skas.xfp, exec_fpx_regs, sizeof(to->skas.xfp)); -} - -/* XXX These need to use [GS]ETFPXREGS and copy_sc_{to,from}_user_skas needs - * to pass in a sufficiently large buffer - */ -int save_fp_registers(int pid, unsigned long *fp_regs) -{ - if(ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0) - return(-errno); - return(0); -} - -int restore_fp_registers(int pid, unsigned long *fp_regs) -{ - if(ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0) - return(-errno); - return(0); -} - -static int move_registers(int pid, int int_op, union uml_pt_regs *regs, - int fp_op, unsigned long *fp_regs) -{ - if(ptrace(int_op, pid, 0, regs->skas.regs) < 0) - return(-errno); - - if(ptrace(fp_op, pid, 0, fp_regs) < 0) - return(-errno); - - return(0); -} - -void save_registers(int pid, union uml_pt_regs *regs) -{ - unsigned long *fp_regs; - int err, fp_op; - - if(have_fpx_regs){ - fp_op = PTRACE_GETFPXREGS; - fp_regs = regs->skas.xfp; - } - else { - fp_op = PTRACE_GETFPREGS; - fp_regs = regs->skas.fp; - } - - err = move_registers(pid, PTRACE_GETREGS, regs, fp_op, fp_regs); - if(err) - panic("save_registers - saving registers failed, errno = %d\n", - -err); -} - -void restore_registers(int pid, union uml_pt_regs *regs) -{ - unsigned long *fp_regs; - int err, fp_op; - - if(have_fpx_regs){ - fp_op = PTRACE_SETFPXREGS; - fp_regs = regs->skas.xfp; - } - else { - fp_op = PTRACE_SETFPREGS; - fp_regs = regs->skas.fp; - } - - err = move_registers(pid, PTRACE_SETREGS, regs, fp_op, fp_regs); - if(err) - panic("restore_registers - saving registers failed, " - "errno = %d\n", -err); -} - -void init_registers(int pid) -{ - int err; - - err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs); - if(err) - panic("check_ptrace : PTRACE_GETREGS failed, errno = %d", - errno); - - errno = 0; - err = ptrace(PTRACE_GETFPXREGS, pid, 0, exec_fpx_regs); - if(!err) - return; - if(errno != EIO) - panic("check_ptrace : PTRACE_GETFPXREGS failed, errno = %d", - errno); - - have_fpx_regs = 0; - - err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs); - if(err) - panic("check_ptrace : PTRACE_GETFPREGS failed, errno = %d", - errno); -} - -void get_safe_registers(unsigned long *regs, unsigned long *fp_regs) -{ - memcpy(regs, exec_regs, HOST_FRAME_SIZE * sizeof(unsigned long)); - if(fp_regs != NULL) - memcpy(fp_regs, exec_fp_regs, - HOST_FP_SIZE * sizeof(unsigned long)); -} - -void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer) -{ - struct __jmp_buf_tag *jmpbuf = buffer; - - UPT_SET(uml_regs, EIP, jmpbuf->__jmpbuf[JB_PC]); - UPT_SET(uml_regs, UESP, jmpbuf->__jmpbuf[JB_SP]); - UPT_SET(uml_regs, EBP, jmpbuf->__jmpbuf[JB_BP]); -} diff --git a/arch/um/os-Linux/sys-i386/tls.c b/arch/um/os-Linux/sys-i386/tls.c deleted file mode 100644 index 120abbe4e3c..00000000000 --- a/arch/um/os-Linux/sys-i386/tls.c +++ /dev/null @@ -1,34 +0,0 @@ -#include <errno.h> -#include <linux/unistd.h> -#include "sysdep/tls.h" -#include "user_util.h" - -static _syscall1(int, get_thread_area, user_desc_t *, u_info); - -/* Checks whether host supports TLS, and sets *tls_min according to the value - * valid on the host. - * i386 host have it == 6; x86_64 host have it == 12, for i386 emulation. */ -void check_host_supports_tls(int *supports_tls, int *tls_min) { - /* Values for x86 and x86_64.*/ - int val[] = {GDT_ENTRY_TLS_MIN_I386, GDT_ENTRY_TLS_MIN_X86_64}; - int i; - - for (i = 0; i < ARRAY_SIZE(val); i++) { - user_desc_t info; - info.entry_number = val[i]; - - if (get_thread_area(&info) == 0) { - *tls_min = val[i]; - *supports_tls = 1; - return; - } else { - if (errno == EINVAL) - continue; - else if (errno == ENOSYS) - *supports_tls = 0; - return; - } - } - - *supports_tls = 0; -} |
