Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Copyright 2003 PathScale, Inc. | |
3 | * | |
4 | * Licensed under the GPL | |
5 | */ | |
6 | ||
7 | #define __FRAME_OFFSETS | |
8 | #include "asm/ptrace.h" | |
9 | #include "linux/sched.h" | |
10 | #include "linux/errno.h" | |
11 | #include "asm/elf.h" | |
12 | ||
13 | /* XXX x86_64 */ | |
14 | unsigned long not_ss; | |
15 | unsigned long not_ds; | |
16 | unsigned long not_es; | |
17 | ||
18 | #define SC_SS(r) (not_ss) | |
19 | #define SC_DS(r) (not_ds) | |
20 | #define SC_ES(r) (not_es) | |
21 | ||
22 | /* determines which flags the user has access to. */ | |
23 | /* 1 = access 0 = no access */ | |
24 | #define FLAG_MASK 0x44dd5UL | |
25 | ||
26 | int putreg(struct task_struct *child, int regno, unsigned long value) | |
27 | { | |
28 | unsigned long tmp; | |
29 | ||
30 | #ifdef TIF_IA32 | |
31 | /* Some code in the 64bit emulation may not be 64bit clean. | |
32 | Don't take any chances. */ | |
33 | if (test_tsk_thread_flag(child, TIF_IA32)) | |
34 | value &= 0xffffffff; | |
35 | #endif | |
36 | switch (regno){ | |
37 | case FS: | |
38 | case GS: | |
39 | case DS: | |
40 | case ES: | |
41 | case SS: | |
42 | case CS: | |
43 | if (value && (value & 3) != 3) | |
44 | return -EIO; | |
45 | value &= 0xffff; | |
46 | break; | |
47 | ||
48 | case FS_BASE: | |
49 | case GS_BASE: | |
50 | if (!((value >> 48) == 0 || (value >> 48) == 0xffff)) | |
51 | return -EIO; | |
52 | break; | |
53 | ||
54 | case EFLAGS: | |
55 | value &= FLAG_MASK; | |
56 | tmp = PT_REGS_EFLAGS(&child->thread.regs) & ~FLAG_MASK; | |
57 | value |= tmp; | |
58 | break; | |
59 | } | |
60 | ||
61 | PT_REGS_SET(&child->thread.regs, regno, value); | |
62 | return 0; | |
63 | } | |
64 | ||
65 | unsigned long getreg(struct task_struct *child, int regno) | |
66 | { | |
67 | unsigned long retval = ~0UL; | |
68 | switch (regno) { | |
69 | case FS: | |
70 | case GS: | |
71 | case DS: | |
72 | case ES: | |
73 | case SS: | |
74 | case CS: | |
75 | retval = 0xffff; | |
76 | /* fall through */ | |
77 | default: | |
78 | retval &= PT_REG(&child->thread.regs, regno); | |
79 | #ifdef TIF_IA32 | |
80 | if (test_tsk_thread_flag(child, TIF_IA32)) | |
81 | retval &= 0xffffffff; | |
82 | #endif | |
83 | } | |
84 | return retval; | |
85 | } | |
86 | ||
87 | void arch_switch(void) | |
88 | { | |
89 | /* XXX | |
90 | printk("arch_switch\n"); | |
91 | */ | |
92 | } | |
93 | ||
94 | int is_syscall(unsigned long addr) | |
95 | { | |
96 | panic("is_syscall"); | |
97 | } | |
98 | ||
99 | int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu ) | |
100 | { | |
101 | panic("dump_fpu"); | |
102 | return(1); | |
103 | } | |
104 | ||
105 | int get_fpregs(unsigned long buf, struct task_struct *child) | |
106 | { | |
107 | panic("get_fpregs"); | |
108 | return(0); | |
109 | } | |
110 | ||
111 | int set_fpregs(unsigned long buf, struct task_struct *child) | |
112 | { | |
113 | panic("set_fpregs"); | |
114 | return(0); | |
115 | } | |
116 | ||
117 | int get_fpxregs(unsigned long buf, struct task_struct *tsk) | |
118 | { | |
119 | panic("get_fpxregs"); | |
120 | return(0); | |
121 | } | |
122 | ||
123 | int set_fpxregs(unsigned long buf, struct task_struct *tsk) | |
124 | { | |
125 | panic("set_fxpregs"); | |
126 | return(0); | |
127 | } | |
128 | ||
129 | /* | |
130 | * Overrides for Emacs so that we follow Linus's tabbing style. | |
131 | * Emacs will notice this stuff at the end of the file and automatically | |
132 | * adjust the settings for this buffer only. This must remain at the end | |
133 | * of the file. | |
134 | * --------------------------------------------------------------------------- | |
135 | * Local variables: | |
136 | * c-file-style: "linux" | |
137 | * End: | |
138 | */ |