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1da177e4 LT |
1 | #ifndef _ASM_PARISC_UNISTD_H_ |
2 | #define _ASM_PARISC_UNISTD_H_ | |
3 | ||
70c1674f | 4 | #include <uapi/asm/unistd.h> |
1da177e4 LT |
5 | |
6 | #ifndef __ASSEMBLY__ | |
7 | ||
8 | #define SYS_ify(syscall_name) __NR_##syscall_name | |
9 | ||
1da177e4 LT |
10 | #ifndef ASM_LINE_SEP |
11 | # define ASM_LINE_SEP ; | |
12 | #endif | |
13 | ||
14 | /* Definition taken from glibc 2.3.3 | |
15 | * sysdeps/unix/sysv/linux/hppa/sysdep.h | |
16 | */ | |
17 | ||
18 | #ifdef PIC | |
19 | /* WARNING: CANNOT BE USED IN A NOP! */ | |
20 | # define K_STW_ASM_PIC " copy %%r19, %%r4\n" | |
21 | # define K_LDW_ASM_PIC " copy %%r4, %%r19\n" | |
22 | # define K_USING_GR4 "%r4", | |
23 | #else | |
24 | # define K_STW_ASM_PIC " \n" | |
25 | # define K_LDW_ASM_PIC " \n" | |
26 | # define K_USING_GR4 | |
27 | #endif | |
28 | ||
29 | /* GCC has to be warned that a syscall may clobber all the ABI | |
30 | registers listed as "caller-saves", see page 8, Table 2 | |
31 | in section 2.2.6 of the PA-RISC RUN-TIME architecture | |
32 | document. However! r28 is the result and will conflict with | |
33 | the clobber list so it is left out. Also the input arguments | |
34 | registers r20 -> r26 will conflict with the list so they | |
35 | are treated specially. Although r19 is clobbered by the syscall | |
36 | we cannot say this because it would violate ABI, thus we say | |
37 | r4 is clobbered and use that register to save/restore r19 | |
38 | across the syscall. */ | |
39 | ||
40 | #define K_CALL_CLOB_REGS "%r1", "%r2", K_USING_GR4 \ | |
41 | "%r20", "%r29", "%r31" | |
42 | ||
43 | #undef K_INLINE_SYSCALL | |
44 | #define K_INLINE_SYSCALL(name, nr, args...) ({ \ | |
45 | long __sys_res; \ | |
46 | { \ | |
ba1f188c | 47 | register unsigned long __res __asm__("r28"); \ |
1da177e4 LT |
48 | K_LOAD_ARGS_##nr(args) \ |
49 | /* FIXME: HACK stw/ldw r19 around syscall */ \ | |
ba1f188c | 50 | __asm__ volatile( \ |
1da177e4 LT |
51 | K_STW_ASM_PIC \ |
52 | " ble 0x100(%%sr2, %%r0)\n" \ | |
53 | " ldi %1, %%r20\n" \ | |
54 | K_LDW_ASM_PIC \ | |
55 | : "=r" (__res) \ | |
56 | : "i" (SYS_ify(name)) K_ASM_ARGS_##nr \ | |
57 | : "memory", K_CALL_CLOB_REGS K_CLOB_ARGS_##nr \ | |
58 | ); \ | |
59 | __sys_res = (long)__res; \ | |
60 | } \ | |
61 | if ( (unsigned long)__sys_res >= (unsigned long)-4095 ){ \ | |
62 | errno = -__sys_res; \ | |
63 | __sys_res = -1; \ | |
64 | } \ | |
65 | __sys_res; \ | |
66 | }) | |
67 | ||
68 | #define K_LOAD_ARGS_0() | |
69 | #define K_LOAD_ARGS_1(r26) \ | |
70 | register unsigned long __r26 __asm__("r26") = (unsigned long)(r26); \ | |
71 | K_LOAD_ARGS_0() | |
72 | #define K_LOAD_ARGS_2(r26,r25) \ | |
73 | register unsigned long __r25 __asm__("r25") = (unsigned long)(r25); \ | |
74 | K_LOAD_ARGS_1(r26) | |
75 | #define K_LOAD_ARGS_3(r26,r25,r24) \ | |
76 | register unsigned long __r24 __asm__("r24") = (unsigned long)(r24); \ | |
77 | K_LOAD_ARGS_2(r26,r25) | |
78 | #define K_LOAD_ARGS_4(r26,r25,r24,r23) \ | |
79 | register unsigned long __r23 __asm__("r23") = (unsigned long)(r23); \ | |
80 | K_LOAD_ARGS_3(r26,r25,r24) | |
81 | #define K_LOAD_ARGS_5(r26,r25,r24,r23,r22) \ | |
82 | register unsigned long __r22 __asm__("r22") = (unsigned long)(r22); \ | |
83 | K_LOAD_ARGS_4(r26,r25,r24,r23) | |
84 | #define K_LOAD_ARGS_6(r26,r25,r24,r23,r22,r21) \ | |
85 | register unsigned long __r21 __asm__("r21") = (unsigned long)(r21); \ | |
86 | K_LOAD_ARGS_5(r26,r25,r24,r23,r22) | |
87 | ||
88 | /* Even with zero args we use r20 for the syscall number */ | |
89 | #define K_ASM_ARGS_0 | |
90 | #define K_ASM_ARGS_1 K_ASM_ARGS_0, "r" (__r26) | |
91 | #define K_ASM_ARGS_2 K_ASM_ARGS_1, "r" (__r25) | |
92 | #define K_ASM_ARGS_3 K_ASM_ARGS_2, "r" (__r24) | |
93 | #define K_ASM_ARGS_4 K_ASM_ARGS_3, "r" (__r23) | |
94 | #define K_ASM_ARGS_5 K_ASM_ARGS_4, "r" (__r22) | |
95 | #define K_ASM_ARGS_6 K_ASM_ARGS_5, "r" (__r21) | |
96 | ||
97 | /* The registers not listed as inputs but clobbered */ | |
98 | #define K_CLOB_ARGS_6 | |
99 | #define K_CLOB_ARGS_5 K_CLOB_ARGS_6, "%r21" | |
100 | #define K_CLOB_ARGS_4 K_CLOB_ARGS_5, "%r22" | |
101 | #define K_CLOB_ARGS_3 K_CLOB_ARGS_4, "%r23" | |
102 | #define K_CLOB_ARGS_2 K_CLOB_ARGS_3, "%r24" | |
103 | #define K_CLOB_ARGS_1 K_CLOB_ARGS_2, "%r25" | |
104 | #define K_CLOB_ARGS_0 K_CLOB_ARGS_1, "%r26" | |
105 | ||
106 | #define _syscall0(type,name) \ | |
107 | type name(void) \ | |
108 | { \ | |
109 | return K_INLINE_SYSCALL(name, 0); \ | |
110 | } | |
111 | ||
112 | #define _syscall1(type,name,type1,arg1) \ | |
113 | type name(type1 arg1) \ | |
114 | { \ | |
115 | return K_INLINE_SYSCALL(name, 1, arg1); \ | |
116 | } | |
117 | ||
118 | #define _syscall2(type,name,type1,arg1,type2,arg2) \ | |
119 | type name(type1 arg1, type2 arg2) \ | |
120 | { \ | |
121 | return K_INLINE_SYSCALL(name, 2, arg1, arg2); \ | |
122 | } | |
123 | ||
124 | #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ | |
125 | type name(type1 arg1, type2 arg2, type3 arg3) \ | |
126 | { \ | |
127 | return K_INLINE_SYSCALL(name, 3, arg1, arg2, arg3); \ | |
128 | } | |
129 | ||
130 | #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ | |
131 | type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ | |
132 | { \ | |
133 | return K_INLINE_SYSCALL(name, 4, arg1, arg2, arg3, arg4); \ | |
134 | } | |
135 | ||
136 | /* select takes 5 arguments */ | |
137 | #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \ | |
138 | type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \ | |
139 | { \ | |
140 | return K_INLINE_SYSCALL(name, 5, arg1, arg2, arg3, arg4, arg5); \ | |
141 | } | |
142 | ||
1da177e4 LT |
143 | #define __ARCH_WANT_OLD_READDIR |
144 | #define __ARCH_WANT_STAT64 | |
145 | #define __ARCH_WANT_SYS_ALARM | |
146 | #define __ARCH_WANT_SYS_GETHOSTNAME | |
147 | #define __ARCH_WANT_SYS_PAUSE | |
148 | #define __ARCH_WANT_SYS_SGETMASK | |
149 | #define __ARCH_WANT_SYS_SIGNAL | |
150 | #define __ARCH_WANT_SYS_TIME | |
151 | #define __ARCH_WANT_COMPAT_SYS_TIME | |
152 | #define __ARCH_WANT_SYS_UTIME | |
153 | #define __ARCH_WANT_SYS_WAITPID | |
154 | #define __ARCH_WANT_SYS_SOCKETCALL | |
155 | #define __ARCH_WANT_SYS_FADVISE64 | |
156 | #define __ARCH_WANT_SYS_GETPGRP | |
157 | #define __ARCH_WANT_SYS_LLSEEK | |
158 | #define __ARCH_WANT_SYS_NICE | |
159 | #define __ARCH_WANT_SYS_OLD_GETRLIMIT | |
160 | #define __ARCH_WANT_SYS_OLDUMOUNT | |
161 | #define __ARCH_WANT_SYS_SIGPENDING | |
162 | #define __ARCH_WANT_SYS_SIGPROCMASK | |
163 | #define __ARCH_WANT_SYS_RT_SIGACTION | |
4650f0a5 KM |
164 | #define __ARCH_WANT_SYS_RT_SIGSUSPEND |
165 | #define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND | |
7f1f311a | 166 | #define __ARCH_WANT_SYS_EXECVE |
415bfae9 AV |
167 | #define __ARCH_WANT_SYS_FORK |
168 | #define __ARCH_WANT_SYS_VFORK | |
169 | #define __ARCH_WANT_SYS_CLONE | |
1da177e4 | 170 | |
1da177e4 LT |
171 | #endif /* __ASSEMBLY__ */ |
172 | ||
173 | #undef STR | |
174 | ||
175 | /* | |
176 | * "Conditional" syscalls | |
177 | * | |
178 | * What we want is __attribute__((weak,alias("sys_ni_syscall"))), | |
179 | * but it doesn't work on all toolchains, so we just do it by hand | |
180 | */ | |
181 | #define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall") | |
182 | ||
183 | #endif /* _ASM_PARISC_UNISTD_H_ */ |