1 #ifndef _ASM_PARISC_UNISTD_H_ 2 #define _ASM_PARISC_UNISTD_H_ 3 4 #include <uapi/asm/unistd.h> 5 6 #ifndef __ASSEMBLY__ 7 8 #define SYS_ify(syscall_name) __NR_##syscall_name 9 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 { \ 47 register unsigned long __res __asm__("r28"); \ 48 K_LOAD_ARGS_##nr(args) \ 49 /* FIXME: HACK stw/ldw r19 around syscall */ \ 50 __asm__ volatile( \ 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 } 142 143 #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_COMPAT_SYS_SCHED_RR_GET_INTERVAL 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 160 #define __ARCH_WANT_SYS_OLD_GETRLIMIT 161 #define __ARCH_WANT_SYS_OLDUMOUNT 162 #define __ARCH_WANT_SYS_SIGPENDING 163 #define __ARCH_WANT_SYS_SIGPROCMASK 164 #define __ARCH_WANT_SYS_FORK 165 #define __ARCH_WANT_SYS_VFORK 166 #define __ARCH_WANT_SYS_CLONE 167 #define __ARCH_WANT_COMPAT_SYS_SENDFILE 168 169 #endif /* __ASSEMBLY__ */ 170 171 #undef STR 172 173 #endif /* _ASM_PARISC_UNISTD_H_ */ 174