1 /*
2 * Support for 32-bit Linux/Parisc ELF binaries on 64 bit kernels
3 *
4 * Copyright (C) 2000 John Marvin
5 * Copyright (C) 2000 Hewlett Packard Co.
6 *
7 * Heavily inspired from various other efforts to do the same thing
8 * (ia64,sparc64/mips64)
9 */
10
11 /* Make sure include/asm-parisc/elf.h does the right thing */
12
13 #define ELF_CLASS ELFCLASS32
14
15 #define ELF_CORE_COPY_REGS(dst, pt) \
16 memset(dst, 0, sizeof(dst)); /* don't leak any "random" bits */ \
17 { int i; \
18 for (i = 0; i < 32; i++) dst[i] = (elf_greg_t) pt->gr[i]; \
19 for (i = 0; i < 8; i++) dst[32 + i] = (elf_greg_t) pt->sr[i]; \
20 } \
21 dst[40] = (elf_greg_t) pt->iaoq[0]; dst[41] = (elf_greg_t) pt->iaoq[1]; \
22 dst[42] = (elf_greg_t) pt->iasq[0]; dst[43] = (elf_greg_t) pt->iasq[1]; \
23 dst[44] = (elf_greg_t) pt->sar; dst[45] = (elf_greg_t) pt->iir; \
24 dst[46] = (elf_greg_t) pt->isr; dst[47] = (elf_greg_t) pt->ior; \
25 dst[48] = (elf_greg_t) mfctl(22); dst[49] = (elf_greg_t) mfctl(0); \
26 dst[50] = (elf_greg_t) mfctl(24); dst[51] = (elf_greg_t) mfctl(25); \
27 dst[52] = (elf_greg_t) mfctl(26); dst[53] = (elf_greg_t) mfctl(27); \
28 dst[54] = (elf_greg_t) mfctl(28); dst[55] = (elf_greg_t) mfctl(29); \
29 dst[56] = (elf_greg_t) mfctl(30); dst[57] = (elf_greg_t) mfctl(31); \
30 dst[58] = (elf_greg_t) mfctl( 8); dst[59] = (elf_greg_t) mfctl( 9); \
31 dst[60] = (elf_greg_t) mfctl(12); dst[61] = (elf_greg_t) mfctl(13); \
32 dst[62] = (elf_greg_t) mfctl(10); dst[63] = (elf_greg_t) mfctl(15);
33
34
35 typedef unsigned int elf_greg_t;
36
37 #include <linux/spinlock.h>
38 #include <asm/processor.h>
39 #include <linux/module.h>
40 #include <linux/elfcore.h>
41 #include <linux/compat.h> /* struct compat_timeval */
42
43 #define elf_prstatus elf_prstatus32
44 struct elf_prstatus32
45 {
46 struct elf_siginfo pr_info; /* Info associated with signal */
47 short pr_cursig; /* Current signal */
48 unsigned int pr_sigpend; /* Set of pending signals */
49 unsigned int pr_sighold; /* Set of held signals */
50 pid_t pr_pid;
51 pid_t pr_ppid;
52 pid_t pr_pgrp;
53 pid_t pr_sid;
54 struct compat_timeval pr_utime; /* User time */
55 struct compat_timeval pr_stime; /* System time */
56 struct compat_timeval pr_cutime; /* Cumulative user time */
57 struct compat_timeval pr_cstime; /* Cumulative system time */
58 elf_gregset_t pr_reg; /* GP registers */
59 int pr_fpvalid; /* True if math co-processor being used. */
60 };
61
62 #define elf_prpsinfo elf_prpsinfo32
63 struct elf_prpsinfo32
64 {
65 char pr_state; /* numeric process state */
66 char pr_sname; /* char for pr_state */
67 char pr_zomb; /* zombie */
68 char pr_nice; /* nice val */
69 unsigned int pr_flag; /* flags */
70 u16 pr_uid;
71 u16 pr_gid;
72 pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
73 /* Lots missing */
74 char pr_fname[16]; /* filename of executable */
75 char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
76 };
77
78 #define init_elf_binfmt init_elf32_binfmt
79
80 #define ELF_PLATFORM ("PARISC32\0")
81
82 /*
83 * We should probably use this macro to set a flag somewhere to indicate
84 * this is a 32 on 64 process. We could use PER_LINUX_32BIT, or we
85 * could set a processor dependent flag in the thread_struct.
86 */
87
88 #define SET_PERSONALITY(ex) \
89 set_thread_flag(TIF_32BIT); \
90 current->thread.map_base = DEFAULT_MAP_BASE32; \
91 current->thread.task_size = DEFAULT_TASK_SIZE32 \
92
93 #undef cputime_to_timeval
94 #define cputime_to_timeval cputime_to_compat_timeval
95 static __inline__ void
cputime_to_compat_timeval(const cputime_t cputime,struct compat_timeval * value)96 cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value)
97 {
98 unsigned long jiffies = cputime_to_jiffies(cputime);
99 value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
100 value->tv_sec = jiffies / HZ;
101 }
102
103 #include "../../../fs/binfmt_elf.c"
104