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-rw-r--r--arch/s390/kernel/binfmt_elf32.c214
1 files changed, 0 insertions, 214 deletions
diff --git a/arch/s390/kernel/binfmt_elf32.c b/arch/s390/kernel/binfmt_elf32.c
deleted file mode 100644
index 3e1c315b736d..000000000000
--- a/arch/s390/kernel/binfmt_elf32.c
+++ /dev/null
@@ -1,214 +0,0 @@
1/*
2 * Support for 32-bit Linux for S390 ELF binaries.
3 *
4 * Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
5 * Author(s): Gerhard Tonn (ton@de.ibm.com)
6 *
7 * Heavily inspired by the 32-bit Sparc compat code which is
8 * Copyright (C) 1995, 1996, 1997, 1998 David S. Miller (davem@redhat.com)
9 * Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek (jj@ultra.linux.cz)
10 */
11
12#define __ASMS390_ELF_H
13
14#include <linux/time.h>
15
16/*
17 * These are used to set parameters in the core dumps.
18 */
19#define ELF_CLASS ELFCLASS32
20#define ELF_DATA ELFDATA2MSB
21#define ELF_ARCH EM_S390
22
23/*
24 * This is used to ensure we don't load something for the wrong architecture.
25 */
26#define elf_check_arch(x) \
27 (((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
28 && (x)->e_ident[EI_CLASS] == ELF_CLASS)
29
30/* ELF register definitions */
31#define NUM_GPRS 16
32#define NUM_FPRS 16
33#define NUM_ACRS 16
34
35/* For SVR4/S390 the function pointer to be registered with `atexit` is
36 passed in R14. */
37#define ELF_PLAT_INIT(_r, load_addr) \
38 do { \
39 _r->gprs[14] = 0; \
40 } while(0)
41
42#define USE_ELF_CORE_DUMP
43#define ELF_EXEC_PAGESIZE 4096
44
45/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
46 use of this is to invoke "./ld.so someprog" to test out a new version of
47 the loader. We need to make sure that it is out of the way of the program
48 that it will "exec", and that there is sufficient room for the brk. */
49
50#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
51
52/* Wow, the "main" arch needs arch dependent functions too.. :) */
53
54/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
55 now struct_user_regs, they are different) */
56
57#define ELF_CORE_COPY_REGS(pr_reg, regs) dump_regs32(regs, &pr_reg);
58
59#define ELF_CORE_COPY_TASK_REGS(tsk, regs) dump_task_regs32(tsk, regs)
60
61#define ELF_CORE_COPY_FPREGS(tsk, fpregs) dump_task_fpu(tsk, fpregs)
62
63/* This yields a mask that user programs can use to figure out what
64 instruction set this CPU supports. */
65
66#define ELF_HWCAP (0)
67
68/* This yields a string that ld.so will use to load implementation
69 specific libraries for optimization. This is more specific in
70 intent than poking at uname or /proc/cpuinfo.
71
72 For the moment, we have only optimizations for the Intel generations,
73 but that could change... */
74
75#define ELF_PLATFORM (NULL)
76
77#define SET_PERSONALITY(ex, ibcs2) \
78do { \
79 if (ibcs2) \
80 set_personality(PER_SVR4); \
81 else if (current->personality != PER_LINUX32) \
82 set_personality(PER_LINUX); \
83 set_thread_flag(TIF_31BIT); \
84} while (0)
85
86#include "compat_linux.h"
87
88typedef _s390_fp_regs32 elf_fpregset_t;
89
90typedef struct
91{
92
93 _psw_t32 psw;
94 __u32 gprs[__NUM_GPRS];
95 __u32 acrs[__NUM_ACRS];
96 __u32 orig_gpr2;
97} s390_regs32;
98typedef s390_regs32 elf_gregset_t;
99
100static inline int dump_regs32(struct pt_regs *ptregs, elf_gregset_t *regs)
101{
102 int i;
103
104 memcpy(&regs->psw.mask, &ptregs->psw.mask, 4);
105 memcpy(&regs->psw.addr, (char *)&ptregs->psw.addr + 4, 4);
106 for (i = 0; i < NUM_GPRS; i++)
107 regs->gprs[i] = ptregs->gprs[i];
108 save_access_regs(regs->acrs);
109 regs->orig_gpr2 = ptregs->orig_gpr2;
110 return 1;
111}
112
113static inline int dump_task_regs32(struct task_struct *tsk, elf_gregset_t *regs)
114{
115 struct pt_regs *ptregs = task_pt_regs(tsk);
116 int i;
117
118 memcpy(&regs->psw.mask, &ptregs->psw.mask, 4);
119 memcpy(&regs->psw.addr, (char *)&ptregs->psw.addr + 4, 4);
120 for (i = 0; i < NUM_GPRS; i++)
121 regs->gprs[i] = ptregs->gprs[i];
122 memcpy(regs->acrs, tsk->thread.acrs, sizeof(regs->acrs));
123 regs->orig_gpr2 = ptregs->orig_gpr2;
124 return 1;
125}
126
127static inline int dump_task_fpu(struct task_struct *tsk, elf_fpregset_t *fpregs)
128{
129 if (tsk == current)
130 save_fp_regs((s390_fp_regs *) fpregs);
131 else
132 memcpy(fpregs, &tsk->thread.fp_regs, sizeof(elf_fpregset_t));
133 return 1;
134}
135
136#include <asm/processor.h>
137#include <asm/pgalloc.h>
138#include <linux/module.h>
139#include <linux/elfcore.h>
140#include <linux/binfmts.h>
141#include <linux/compat.h>
142
143#define elf_prstatus elf_prstatus32
144struct elf_prstatus32
145{
146 struct elf_siginfo pr_info; /* Info associated with signal */
147 short pr_cursig; /* Current signal */
148 u32 pr_sigpend; /* Set of pending signals */
149 u32 pr_sighold; /* Set of held signals */
150 pid_t pr_pid;
151 pid_t pr_ppid;
152 pid_t pr_pgrp;
153 pid_t pr_sid;
154 struct compat_timeval pr_utime; /* User time */
155 struct compat_timeval pr_stime; /* System time */
156 struct compat_timeval pr_cutime; /* Cumulative user time */
157 struct compat_timeval pr_cstime; /* Cumulative system time */
158 elf_gregset_t pr_reg; /* GP registers */
159 int pr_fpvalid; /* True if math co-processor being used. */
160};
161
162#define elf_prpsinfo elf_prpsinfo32
163struct elf_prpsinfo32
164{
165 char pr_state; /* numeric process state */
166 char pr_sname; /* char for pr_state */
167 char pr_zomb; /* zombie */
168 char pr_nice; /* nice val */
169 u32 pr_flag; /* flags */
170 u16 pr_uid;
171 u16 pr_gid;
172 pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
173 /* Lots missing */
174 char pr_fname[16]; /* filename of executable */
175 char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
176};
177
178#include <linux/highuid.h>
179
180/*
181#define init_elf_binfmt init_elf32_binfmt
182*/
183
184#undef start_thread
185#define start_thread start_thread31
186
187static inline void start_thread31(struct pt_regs *regs, unsigned long new_psw,
188 unsigned long new_stackp)
189{
190 set_fs(USER_DS);
191 regs->psw.mask = psw_user32_bits;
192 regs->psw.addr = new_psw;
193 regs->gprs[15] = new_stackp;
194 crst_table_downgrade(current->mm, 1UL << 31);
195}
196
197MODULE_DESCRIPTION("Binary format loader for compatibility with 32bit Linux for S390 binaries,"
198 " Copyright 2000 IBM Corporation");
199MODULE_AUTHOR("Gerhard Tonn <ton@de.ibm.com>");
200
201#undef MODULE_DESCRIPTION
202#undef MODULE_AUTHOR
203
204#undef cputime_to_timeval
205#define cputime_to_timeval cputime_to_compat_timeval
206static inline void
207cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value)
208{
209 value->tv_usec = cputime % 1000000;
210 value->tv_sec = cputime / 1000000;
211}
212
213#include "../../../fs/binfmt_elf.c"
214
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