| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _ASM_PARISC_UNISTD_H_ |
| #define _ASM_PARISC_UNISTD_H_ |
| |
| #include <uapi/asm/unistd.h> |
| |
| #ifndef __ASSEMBLY__ |
| |
| #define SYS_ify(syscall_name) __NR_##syscall_name |
| |
| #ifndef ASM_LINE_SEP |
| # define ASM_LINE_SEP ; |
| #endif |
| |
| /* Definition taken from glibc 2.3.3 |
| * sysdeps/unix/sysv/linux/hppa/sysdep.h |
| */ |
| |
| #ifdef PIC |
| /* WARNING: CANNOT BE USED IN A NOP! */ |
| # define K_STW_ASM_PIC " copy %%r19, %%r4\n" |
| # define K_LDW_ASM_PIC " copy %%r4, %%r19\n" |
| # define K_USING_GR4 "%r4", |
| #else |
| # define K_STW_ASM_PIC " \n" |
| # define K_LDW_ASM_PIC " \n" |
| # define K_USING_GR4 |
| #endif |
| |
| /* GCC has to be warned that a syscall may clobber all the ABI |
| registers listed as "caller-saves", see page 8, Table 2 |
| in section 2.2.6 of the PA-RISC RUN-TIME architecture |
| document. However! r28 is the result and will conflict with |
| the clobber list so it is left out. Also the input arguments |
| registers r20 -> r26 will conflict with the list so they |
| are treated specially. Although r19 is clobbered by the syscall |
| we cannot say this because it would violate ABI, thus we say |
| r4 is clobbered and use that register to save/restore r19 |
| across the syscall. */ |
| |
| #define K_CALL_CLOB_REGS "%r1", "%r2", K_USING_GR4 \ |
| "%r20", "%r29", "%r31" |
| |
| #undef K_INLINE_SYSCALL |
| #define K_INLINE_SYSCALL(name, nr, args...) ({ \ |
| long __sys_res; \ |
| { \ |
| register unsigned long __res __asm__("r28"); \ |
| K_LOAD_ARGS_##nr(args) \ |
| /* FIXME: HACK stw/ldw r19 around syscall */ \ |
| __asm__ volatile( \ |
| K_STW_ASM_PIC \ |
| " ble 0x100(%%sr2, %%r0)\n" \ |
| " ldi %1, %%r20\n" \ |
| K_LDW_ASM_PIC \ |
| : "=r" (__res) \ |
| : "i" (SYS_ify(name)) K_ASM_ARGS_##nr \ |
| : "memory", K_CALL_CLOB_REGS K_CLOB_ARGS_##nr \ |
| ); \ |
| __sys_res = (long)__res; \ |
| } \ |
| if ( (unsigned long)__sys_res >= (unsigned long)-4095 ){ \ |
| errno = -__sys_res; \ |
| __sys_res = -1; \ |
| } \ |
| __sys_res; \ |
| }) |
| |
| #define K_LOAD_ARGS_0() |
| #define K_LOAD_ARGS_1(r26) \ |
| register unsigned long __r26 __asm__("r26") = (unsigned long)(r26); \ |
| K_LOAD_ARGS_0() |
| #define K_LOAD_ARGS_2(r26,r25) \ |
| register unsigned long __r25 __asm__("r25") = (unsigned long)(r25); \ |
| K_LOAD_ARGS_1(r26) |
| #define K_LOAD_ARGS_3(r26,r25,r24) \ |
| register unsigned long __r24 __asm__("r24") = (unsigned long)(r24); \ |
| K_LOAD_ARGS_2(r26,r25) |
| #define K_LOAD_ARGS_4(r26,r25,r24,r23) \ |
| register unsigned long __r23 __asm__("r23") = (unsigned long)(r23); \ |
| K_LOAD_ARGS_3(r26,r25,r24) |
| #define K_LOAD_ARGS_5(r26,r25,r24,r23,r22) \ |
| register unsigned long __r22 __asm__("r22") = (unsigned long)(r22); \ |
| K_LOAD_ARGS_4(r26,r25,r24,r23) |
| #define K_LOAD_ARGS_6(r26,r25,r24,r23,r22,r21) \ |
| register unsigned long __r21 __asm__("r21") = (unsigned long)(r21); \ |
| K_LOAD_ARGS_5(r26,r25,r24,r23,r22) |
| |
| /* Even with zero args we use r20 for the syscall number */ |
| #define K_ASM_ARGS_0 |
| #define K_ASM_ARGS_1 K_ASM_ARGS_0, "r" (__r26) |
| #define K_ASM_ARGS_2 K_ASM_ARGS_1, "r" (__r25) |
| #define K_ASM_ARGS_3 K_ASM_ARGS_2, "r" (__r24) |
| #define K_ASM_ARGS_4 K_ASM_ARGS_3, "r" (__r23) |
| #define K_ASM_ARGS_5 K_ASM_ARGS_4, "r" (__r22) |
| #define K_ASM_ARGS_6 K_ASM_ARGS_5, "r" (__r21) |
| |
| /* The registers not listed as inputs but clobbered */ |
| #define K_CLOB_ARGS_6 |
| #define K_CLOB_ARGS_5 K_CLOB_ARGS_6, "%r21" |
| #define K_CLOB_ARGS_4 K_CLOB_ARGS_5, "%r22" |
| #define K_CLOB_ARGS_3 K_CLOB_ARGS_4, "%r23" |
| #define K_CLOB_ARGS_2 K_CLOB_ARGS_3, "%r24" |
| #define K_CLOB_ARGS_1 K_CLOB_ARGS_2, "%r25" |
| #define K_CLOB_ARGS_0 K_CLOB_ARGS_1, "%r26" |
| |
| #define _syscall0(type,name) \ |
| type name(void) \ |
| { \ |
| return K_INLINE_SYSCALL(name, 0); \ |
| } |
| |
| #define _syscall1(type,name,type1,arg1) \ |
| type name(type1 arg1) \ |
| { \ |
| return K_INLINE_SYSCALL(name, 1, arg1); \ |
| } |
| |
| #define _syscall2(type,name,type1,arg1,type2,arg2) \ |
| type name(type1 arg1, type2 arg2) \ |
| { \ |
| return K_INLINE_SYSCALL(name, 2, arg1, arg2); \ |
| } |
| |
| #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ |
| type name(type1 arg1, type2 arg2, type3 arg3) \ |
| { \ |
| return K_INLINE_SYSCALL(name, 3, arg1, arg2, arg3); \ |
| } |
| |
| #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ |
| type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ |
| { \ |
| return K_INLINE_SYSCALL(name, 4, arg1, arg2, arg3, arg4); \ |
| } |
| |
| /* select takes 5 arguments */ |
| #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \ |
| type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \ |
| { \ |
| return K_INLINE_SYSCALL(name, 5, arg1, arg2, arg3, arg4, arg5); \ |
| } |
| |
| #define __ARCH_WANT_OLD_READDIR |
| #define __ARCH_WANT_STAT64 |
| #define __ARCH_WANT_SYS_ALARM |
| #define __ARCH_WANT_SYS_GETHOSTNAME |
| #define __ARCH_WANT_SYS_PAUSE |
| #define __ARCH_WANT_SYS_SIGNAL |
| #define __ARCH_WANT_SYS_TIME |
| #define __ARCH_WANT_COMPAT_SYS_TIME |
| #define __ARCH_WANT_COMPAT_SYS_SCHED_RR_GET_INTERVAL |
| #define __ARCH_WANT_SYS_UTIME |
| #define __ARCH_WANT_SYS_WAITPID |
| #define __ARCH_WANT_SYS_SOCKETCALL |
| #define __ARCH_WANT_SYS_FADVISE64 |
| #define __ARCH_WANT_SYS_GETPGRP |
| #define __ARCH_WANT_SYS_LLSEEK |
| #define __ARCH_WANT_SYS_NICE |
| #define __ARCH_WANT_SYS_OLDUMOUNT |
| #define __ARCH_WANT_SYS_SIGPENDING |
| #define __ARCH_WANT_SYS_SIGPROCMASK |
| #define __ARCH_WANT_SYS_FORK |
| #define __ARCH_WANT_SYS_VFORK |
| #define __ARCH_WANT_SYS_CLONE |
| #define __ARCH_WANT_COMPAT_SYS_SENDFILE |
| |
| #endif /* __ASSEMBLY__ */ |
| |
| #undef STR |
| |
| #endif /* _ASM_PARISC_UNISTD_H_ */ |