aboutsummaryrefslogtreecommitdiffstats
path: root/arch/um/sys-i386/asm
diff options
context:
space:
mode:
Diffstat (limited to 'arch/um/sys-i386/asm')
-rw-r--r--arch/um/sys-i386/asm/archparam.h16
-rw-r--r--arch/um/sys-i386/asm/elf.h125
-rw-r--r--arch/um/sys-i386/asm/module.h13
-rw-r--r--arch/um/sys-i386/asm/processor.h78
-rw-r--r--arch/um/sys-i386/asm/ptrace.h51
5 files changed, 283 insertions, 0 deletions
diff --git a/arch/um/sys-i386/asm/archparam.h b/arch/um/sys-i386/asm/archparam.h
new file mode 100644
index 00000000000..2a18a884ca1
--- /dev/null
+++ b/arch/um/sys-i386/asm/archparam.h
@@ -0,0 +1,16 @@
1/*
2 * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
3 * Licensed under the GPL
4 */
5
6#ifndef __UM_ARCHPARAM_I386_H
7#define __UM_ARCHPARAM_I386_H
8
9#ifdef CONFIG_X86_PAE
10#define LAST_PKMAP 512
11#else
12#define LAST_PKMAP 1024
13#endif
14
15#endif
16
diff --git a/arch/um/sys-i386/asm/elf.h b/arch/um/sys-i386/asm/elf.h
new file mode 100644
index 00000000000..42305551d20
--- /dev/null
+++ b/arch/um/sys-i386/asm/elf.h
@@ -0,0 +1,125 @@
1/*
2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3 * Licensed under the GPL
4 */
5#ifndef __UM_ELF_I386_H
6#define __UM_ELF_I386_H
7
8#include <asm/user.h>
9#include "skas.h"
10
11#define R_386_NONE 0
12#define R_386_32 1
13#define R_386_PC32 2
14#define R_386_GOT32 3
15#define R_386_PLT32 4
16#define R_386_COPY 5
17#define R_386_GLOB_DAT 6
18#define R_386_JMP_SLOT 7
19#define R_386_RELATIVE 8
20#define R_386_GOTOFF 9
21#define R_386_GOTPC 10
22#define R_386_NUM 11
23
24typedef unsigned long elf_greg_t;
25
26#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
27typedef elf_greg_t elf_gregset_t[ELF_NGREG];
28
29typedef struct user_i387_struct elf_fpregset_t;
30
31/*
32 * This is used to ensure we don't load something for the wrong architecture.
33 */
34#define elf_check_arch(x) \
35 (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))
36
37#define ELF_CLASS ELFCLASS32
38#define ELF_DATA ELFDATA2LSB
39#define ELF_ARCH EM_386
40
41#define ELF_PLAT_INIT(regs, load_addr) do { \
42 PT_REGS_EBX(regs) = 0; \
43 PT_REGS_ECX(regs) = 0; \
44 PT_REGS_EDX(regs) = 0; \
45 PT_REGS_ESI(regs) = 0; \
46 PT_REGS_EDI(regs) = 0; \
47 PT_REGS_EBP(regs) = 0; \
48 PT_REGS_EAX(regs) = 0; \
49} while (0)
50
51#define ELF_EXEC_PAGESIZE 4096
52
53#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
54
55/* Shamelessly stolen from include/asm-i386/elf.h */
56
57#define ELF_CORE_COPY_REGS(pr_reg, regs) do { \
58 pr_reg[0] = PT_REGS_EBX(regs); \
59 pr_reg[1] = PT_REGS_ECX(regs); \
60 pr_reg[2] = PT_REGS_EDX(regs); \
61 pr_reg[3] = PT_REGS_ESI(regs); \
62 pr_reg[4] = PT_REGS_EDI(regs); \
63 pr_reg[5] = PT_REGS_EBP(regs); \
64 pr_reg[6] = PT_REGS_EAX(regs); \
65 pr_reg[7] = PT_REGS_DS(regs); \
66 pr_reg[8] = PT_REGS_ES(regs); \
67 /* fake once used fs and gs selectors? */ \
68 pr_reg[9] = PT_REGS_DS(regs); \
69 pr_reg[10] = PT_REGS_DS(regs); \
70 pr_reg[11] = PT_REGS_SYSCALL_NR(regs); \
71 pr_reg[12] = PT_REGS_IP(regs); \
72 pr_reg[13] = PT_REGS_CS(regs); \
73 pr_reg[14] = PT_REGS_EFLAGS(regs); \
74 pr_reg[15] = PT_REGS_SP(regs); \
75 pr_reg[16] = PT_REGS_SS(regs); \
76} while (0);
77
78#define task_pt_regs(t) (&(t)->thread.regs)
79
80struct task_struct;
81
82extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
83
84#define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu)
85
86extern long elf_aux_hwcap;
87#define ELF_HWCAP (elf_aux_hwcap)
88
89extern char * elf_aux_platform;
90#define ELF_PLATFORM (elf_aux_platform)
91
92#define SET_PERSONALITY(ex) do { } while (0)
93
94extern unsigned long vsyscall_ehdr;
95extern unsigned long vsyscall_end;
96extern unsigned long __kernel_vsyscall;
97
98#define VSYSCALL_BASE vsyscall_ehdr
99#define VSYSCALL_END vsyscall_end
100
101/*
102 * This is the range that is readable by user mode, and things
103 * acting like user mode such as get_user_pages.
104 */
105#define FIXADDR_USER_START VSYSCALL_BASE
106#define FIXADDR_USER_END VSYSCALL_END
107
108#define __HAVE_ARCH_GATE_AREA 1
109
110/*
111 * Architecture-neutral AT_ values in 0-17, leave some room
112 * for more of them, start the x86-specific ones at 32.
113 */
114#define AT_SYSINFO 32
115#define AT_SYSINFO_EHDR 33
116
117#define ARCH_DLINFO \
118do { \
119 if ( vsyscall_ehdr ) { \
120 NEW_AUX_ENT(AT_SYSINFO, __kernel_vsyscall); \
121 NEW_AUX_ENT(AT_SYSINFO_EHDR, vsyscall_ehdr); \
122 } \
123} while (0)
124
125#endif
diff --git a/arch/um/sys-i386/asm/module.h b/arch/um/sys-i386/asm/module.h
new file mode 100644
index 00000000000..5ead4a0b2e3
--- /dev/null
+++ b/arch/um/sys-i386/asm/module.h
@@ -0,0 +1,13 @@
1#ifndef __UM_MODULE_I386_H
2#define __UM_MODULE_I386_H
3
4/* UML is simple */
5struct mod_arch_specific
6{
7};
8
9#define Elf_Shdr Elf32_Shdr
10#define Elf_Sym Elf32_Sym
11#define Elf_Ehdr Elf32_Ehdr
12
13#endif
diff --git a/arch/um/sys-i386/asm/processor.h b/arch/um/sys-i386/asm/processor.h
new file mode 100644
index 00000000000..82a9061ab5b
--- /dev/null
+++ b/arch/um/sys-i386/asm/processor.h
@@ -0,0 +1,78 @@
1/*
2 * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
4 */
5
6#ifndef __UM_PROCESSOR_I386_H
7#define __UM_PROCESSOR_I386_H
8
9#include "linux/string.h"
10#include <sysdep/host_ldt.h>
11#include "asm/segment.h"
12
13extern int host_has_cmov;
14
15/* include faultinfo structure */
16#include "sysdep/faultinfo.h"
17
18struct uml_tls_struct {
19 struct user_desc tls;
20 unsigned flushed:1;
21 unsigned present:1;
22};
23
24struct arch_thread {
25 struct uml_tls_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
26 unsigned long debugregs[8];
27 int debugregs_seq;
28 struct faultinfo faultinfo;
29};
30
31#define INIT_ARCH_THREAD { \
32 .tls_array = { [ 0 ... GDT_ENTRY_TLS_ENTRIES - 1 ] = \
33 { .present = 0, .flushed = 0 } }, \
34 .debugregs = { [ 0 ... 7 ] = 0 }, \
35 .debugregs_seq = 0, \
36 .faultinfo = { 0, 0, 0 } \
37}
38
39static inline void arch_flush_thread(struct arch_thread *thread)
40{
41 /* Clear any TLS still hanging */
42 memset(&thread->tls_array, 0, sizeof(thread->tls_array));
43}
44
45static inline void arch_copy_thread(struct arch_thread *from,
46 struct arch_thread *to)
47{
48 memcpy(&to->tls_array, &from->tls_array, sizeof(from->tls_array));
49}
50
51#include <asm/user.h>
52
53/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
54static inline void rep_nop(void)
55{
56 __asm__ __volatile__("rep;nop": : :"memory");
57}
58
59#define cpu_relax() rep_nop()
60
61/*
62 * Default implementation of macro that returns current
63 * instruction pointer ("program counter"). Stolen
64 * from asm-i386/processor.h
65 */
66#define current_text_addr() \
67 ({ void *pc; __asm__("movl $1f,%0\n1:":"=g" (pc)); pc; })
68
69#define ARCH_IS_STACKGROW(address) \
70 (address + 32 >= UPT_SP(&current->thread.regs.regs))
71
72#define KSTK_EIP(tsk) KSTK_REG(tsk, EIP)
73#define KSTK_ESP(tsk) KSTK_REG(tsk, UESP)
74#define KSTK_EBP(tsk) KSTK_REG(tsk, EBP)
75
76#include "asm/processor-generic.h"
77
78#endif
diff --git a/arch/um/sys-i386/asm/ptrace.h b/arch/um/sys-i386/asm/ptrace.h
new file mode 100644
index 00000000000..5d2a5911253
--- /dev/null
+++ b/arch/um/sys-i386/asm/ptrace.h
@@ -0,0 +1,51 @@
1/*
2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3 * Licensed under the GPL
4 */
5
6#ifndef __UM_PTRACE_I386_H
7#define __UM_PTRACE_I386_H
8
9#define HOST_AUDIT_ARCH AUDIT_ARCH_I386
10
11#include "linux/compiler.h"
12#include "asm/ptrace-generic.h"
13
14#define PT_REGS_EAX(r) UPT_EAX(&(r)->regs)
15#define PT_REGS_EBX(r) UPT_EBX(&(r)->regs)
16#define PT_REGS_ECX(r) UPT_ECX(&(r)->regs)
17#define PT_REGS_EDX(r) UPT_EDX(&(r)->regs)
18#define PT_REGS_ESI(r) UPT_ESI(&(r)->regs)
19#define PT_REGS_EDI(r) UPT_EDI(&(r)->regs)
20#define PT_REGS_EBP(r) UPT_EBP(&(r)->regs)
21
22#define PT_REGS_CS(r) UPT_CS(&(r)->regs)
23#define PT_REGS_SS(r) UPT_SS(&(r)->regs)
24#define PT_REGS_DS(r) UPT_DS(&(r)->regs)
25#define PT_REGS_ES(r) UPT_ES(&(r)->regs)
26#define PT_REGS_FS(r) UPT_FS(&(r)->regs)
27#define PT_REGS_GS(r) UPT_GS(&(r)->regs)
28
29#define PT_REGS_EFLAGS(r) UPT_EFLAGS(&(r)->regs)
30
31#define PT_REGS_ORIG_SYSCALL(r) PT_REGS_EAX(r)
32#define PT_REGS_SYSCALL_RET(r) PT_REGS_EAX(r)
33#define PT_FIX_EXEC_STACK(sp) do ; while(0)
34
35#define profile_pc(regs) PT_REGS_IP(regs)
36
37#define user_mode(r) UPT_IS_USER(&(r)->regs)
38
39/*
40 * Forward declaration to avoid including sysdep/tls.h, which causes a
41 * circular include, and compilation failures.
42 */
43struct user_desc;
44
45extern int ptrace_get_thread_area(struct task_struct *child, int idx,
46 struct user_desc __user *user_desc);
47
48extern int ptrace_set_thread_area(struct task_struct *child, int idx,
49 struct user_desc __user *user_desc);
50
51#endif
generated by cgit v1.2.2 (git 2.25.0) at 2026-03-24 02:07:36 -0400