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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef _ASM_PARISC_UNISTD_H_ |
3 | #define _ASM_PARISC_UNISTD_H_ | |
4 | ||
70c1674f | 5 | #include <uapi/asm/unistd.h> |
1da177e4 LT |
6 | |
7 | #ifndef __ASSEMBLY__ | |
8 | ||
9 | #define SYS_ify(syscall_name) __NR_##syscall_name | |
10 | ||
1da177e4 LT |
11 | #ifndef ASM_LINE_SEP |
12 | # define ASM_LINE_SEP ; | |
13 | #endif | |
14 | ||
15 | /* Definition taken from glibc 2.3.3 | |
16 | * sysdeps/unix/sysv/linux/hppa/sysdep.h | |
17 | */ | |
18 | ||
19 | #ifdef PIC | |
20 | /* WARNING: CANNOT BE USED IN A NOP! */ | |
21 | # define K_STW_ASM_PIC " copy %%r19, %%r4\n" | |
22 | # define K_LDW_ASM_PIC " copy %%r4, %%r19\n" | |
23 | # define K_USING_GR4 "%r4", | |
24 | #else | |
25 | # define K_STW_ASM_PIC " \n" | |
26 | # define K_LDW_ASM_PIC " \n" | |
27 | # define K_USING_GR4 | |
28 | #endif | |
29 | ||
30 | /* GCC has to be warned that a syscall may clobber all the ABI | |
31 | registers listed as "caller-saves", see page 8, Table 2 | |
32 | in section 2.2.6 of the PA-RISC RUN-TIME architecture | |
33 | document. However! r28 is the result and will conflict with | |
34 | the clobber list so it is left out. Also the input arguments | |
35 | registers r20 -> r26 will conflict with the list so they | |
36 | are treated specially. Although r19 is clobbered by the syscall | |
37 | we cannot say this because it would violate ABI, thus we say | |
38 | r4 is clobbered and use that register to save/restore r19 | |
39 | across the syscall. */ | |
40 | ||
41 | #define K_CALL_CLOB_REGS "%r1", "%r2", K_USING_GR4 \ | |
42 | "%r20", "%r29", "%r31" | |
43 | ||
44 | #undef K_INLINE_SYSCALL | |
45 | #define K_INLINE_SYSCALL(name, nr, args...) ({ \ | |
46 | long __sys_res; \ | |
47 | { \ | |
ba1f188c | 48 | register unsigned long __res __asm__("r28"); \ |
1da177e4 LT |
49 | K_LOAD_ARGS_##nr(args) \ |
50 | /* FIXME: HACK stw/ldw r19 around syscall */ \ | |
ba1f188c | 51 | __asm__ volatile( \ |
1da177e4 LT |
52 | K_STW_ASM_PIC \ |
53 | " ble 0x100(%%sr2, %%r0)\n" \ | |
54 | " ldi %1, %%r20\n" \ | |
55 | K_LDW_ASM_PIC \ | |
56 | : "=r" (__res) \ | |
57 | : "i" (SYS_ify(name)) K_ASM_ARGS_##nr \ | |
58 | : "memory", K_CALL_CLOB_REGS K_CLOB_ARGS_##nr \ | |
59 | ); \ | |
60 | __sys_res = (long)__res; \ | |
61 | } \ | |
62 | if ( (unsigned long)__sys_res >= (unsigned long)-4095 ){ \ | |
63 | errno = -__sys_res; \ | |
64 | __sys_res = -1; \ | |
65 | } \ | |
66 | __sys_res; \ | |
67 | }) | |
68 | ||
69 | #define K_LOAD_ARGS_0() | |
70 | #define K_LOAD_ARGS_1(r26) \ | |
71 | register unsigned long __r26 __asm__("r26") = (unsigned long)(r26); \ | |
72 | K_LOAD_ARGS_0() | |
73 | #define K_LOAD_ARGS_2(r26,r25) \ | |
74 | register unsigned long __r25 __asm__("r25") = (unsigned long)(r25); \ | |
75 | K_LOAD_ARGS_1(r26) | |
76 | #define K_LOAD_ARGS_3(r26,r25,r24) \ | |
77 | register unsigned long __r24 __asm__("r24") = (unsigned long)(r24); \ | |
78 | K_LOAD_ARGS_2(r26,r25) | |
79 | #define K_LOAD_ARGS_4(r26,r25,r24,r23) \ | |
80 | register unsigned long __r23 __asm__("r23") = (unsigned long)(r23); \ | |
81 | K_LOAD_ARGS_3(r26,r25,r24) | |
82 | #define K_LOAD_ARGS_5(r26,r25,r24,r23,r22) \ | |
83 | register unsigned long __r22 __asm__("r22") = (unsigned long)(r22); \ | |
84 | K_LOAD_ARGS_4(r26,r25,r24,r23) | |
85 | #define K_LOAD_ARGS_6(r26,r25,r24,r23,r22,r21) \ | |
86 | register unsigned long __r21 __asm__("r21") = (unsigned long)(r21); \ | |
87 | K_LOAD_ARGS_5(r26,r25,r24,r23,r22) | |
88 | ||
89 | /* Even with zero args we use r20 for the syscall number */ | |
90 | #define K_ASM_ARGS_0 | |
91 | #define K_ASM_ARGS_1 K_ASM_ARGS_0, "r" (__r26) | |
92 | #define K_ASM_ARGS_2 K_ASM_ARGS_1, "r" (__r25) | |
93 | #define K_ASM_ARGS_3 K_ASM_ARGS_2, "r" (__r24) | |
94 | #define K_ASM_ARGS_4 K_ASM_ARGS_3, "r" (__r23) | |
95 | #define K_ASM_ARGS_5 K_ASM_ARGS_4, "r" (__r22) | |
96 | #define K_ASM_ARGS_6 K_ASM_ARGS_5, "r" (__r21) | |
97 | ||
98 | /* The registers not listed as inputs but clobbered */ | |
99 | #define K_CLOB_ARGS_6 | |
100 | #define K_CLOB_ARGS_5 K_CLOB_ARGS_6, "%r21" | |
101 | #define K_CLOB_ARGS_4 K_CLOB_ARGS_5, "%r22" | |
102 | #define K_CLOB_ARGS_3 K_CLOB_ARGS_4, "%r23" | |
103 | #define K_CLOB_ARGS_2 K_CLOB_ARGS_3, "%r24" | |
104 | #define K_CLOB_ARGS_1 K_CLOB_ARGS_2, "%r25" | |
105 | #define K_CLOB_ARGS_0 K_CLOB_ARGS_1, "%r26" | |
106 | ||
107 | #define _syscall0(type,name) \ | |
108 | type name(void) \ | |
109 | { \ | |
110 | return K_INLINE_SYSCALL(name, 0); \ | |
111 | } | |
112 | ||
113 | #define _syscall1(type,name,type1,arg1) \ | |
114 | type name(type1 arg1) \ | |
115 | { \ | |
116 | return K_INLINE_SYSCALL(name, 1, arg1); \ | |
117 | } | |
118 | ||
119 | #define _syscall2(type,name,type1,arg1,type2,arg2) \ | |
120 | type name(type1 arg1, type2 arg2) \ | |
121 | { \ | |
122 | return K_INLINE_SYSCALL(name, 2, arg1, arg2); \ | |
123 | } | |
124 | ||
125 | #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ | |
126 | type name(type1 arg1, type2 arg2, type3 arg3) \ | |
127 | { \ | |
128 | return K_INLINE_SYSCALL(name, 3, arg1, arg2, arg3); \ | |
129 | } | |
130 | ||
131 | #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ | |
132 | type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ | |
133 | { \ | |
134 | return K_INLINE_SYSCALL(name, 4, arg1, arg2, arg3, arg4); \ | |
135 | } | |
136 | ||
137 | /* select takes 5 arguments */ | |
138 | #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \ | |
139 | type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \ | |
140 | { \ | |
141 | return K_INLINE_SYSCALL(name, 5, arg1, arg2, arg3, arg4, arg5); \ | |
142 | } | |
143 | ||
1da177e4 LT |
144 | #define __ARCH_WANT_OLD_READDIR |
145 | #define __ARCH_WANT_STAT64 | |
146 | #define __ARCH_WANT_SYS_ALARM | |
147 | #define __ARCH_WANT_SYS_GETHOSTNAME | |
148 | #define __ARCH_WANT_SYS_PAUSE | |
1da177e4 LT |
149 | #define __ARCH_WANT_SYS_SIGNAL |
150 | #define __ARCH_WANT_SYS_TIME | |
151 | #define __ARCH_WANT_COMPAT_SYS_TIME | |
e27da28a | 152 | #define __ARCH_WANT_COMPAT_SYS_SCHED_RR_GET_INTERVAL |
1da177e4 LT |
153 | #define __ARCH_WANT_SYS_UTIME |
154 | #define __ARCH_WANT_SYS_WAITPID | |
155 | #define __ARCH_WANT_SYS_SOCKETCALL | |
156 | #define __ARCH_WANT_SYS_FADVISE64 | |
157 | #define __ARCH_WANT_SYS_GETPGRP | |
158 | #define __ARCH_WANT_SYS_LLSEEK | |
159 | #define __ARCH_WANT_SYS_NICE | |
1da177e4 LT |
160 | #define __ARCH_WANT_SYS_OLDUMOUNT |
161 | #define __ARCH_WANT_SYS_SIGPENDING | |
162 | #define __ARCH_WANT_SYS_SIGPROCMASK | |
415bfae9 AV |
163 | #define __ARCH_WANT_SYS_FORK |
164 | #define __ARCH_WANT_SYS_VFORK | |
165 | #define __ARCH_WANT_SYS_CLONE | |
f03d70a7 | 166 | #define __ARCH_WANT_COMPAT_SYS_SENDFILE |
1da177e4 | 167 | |
1da177e4 LT |
168 | #endif /* __ASSEMBLY__ */ |
169 | ||
170 | #undef STR | |
171 | ||
1da177e4 | 172 | #endif /* _ASM_PARISC_UNISTD_H_ */ |