cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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unistd.h (5610B)


      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _ASM_PARISC_UNISTD_H_
      3#define _ASM_PARISC_UNISTD_H_
      4
      5#include <uapi/asm/unistd.h>
      6
      7#define __NR_Linux_syscalls	__NR_syscalls
      8
      9#ifndef __ASSEMBLY__
     10
     11#define SYS_ify(syscall_name)   __NR_##syscall_name
     12
     13#define __IGNORE_fadvise64		/* fadvise64_64 */
     14
     15#ifndef ASM_LINE_SEP
     16# define ASM_LINE_SEP ;
     17#endif
     18
     19/* Definition taken from glibc 2.3.3
     20 * sysdeps/unix/sysv/linux/hppa/sysdep.h
     21 */
     22
     23#ifdef PIC
     24/* WARNING: CANNOT BE USED IN A NOP! */
     25# define K_STW_ASM_PIC	"       copy %%r19, %%r4\n"
     26# define K_LDW_ASM_PIC	"       copy %%r4, %%r19\n"
     27# define K_USING_GR4	"%r4",
     28#else
     29# define K_STW_ASM_PIC	" \n"
     30# define K_LDW_ASM_PIC	" \n"
     31# define K_USING_GR4
     32#endif
     33
     34/* GCC has to be warned that a syscall may clobber all the ABI
     35   registers listed as "caller-saves", see page 8, Table 2
     36   in section 2.2.6 of the PA-RISC RUN-TIME architecture
     37   document. However! r28 is the result and will conflict with
     38   the clobber list so it is left out. Also the input arguments
     39   registers r20 -> r26 will conflict with the list so they
     40   are treated specially. Although r19 is clobbered by the syscall
     41   we cannot say this because it would violate ABI, thus we say
     42   r4 is clobbered and use that register to save/restore r19
     43   across the syscall. */
     44
     45#define K_CALL_CLOB_REGS "%r1", "%r2", K_USING_GR4 \
     46	        	 "%r20", "%r29", "%r31"
     47
     48#undef K_INLINE_SYSCALL
     49#define K_INLINE_SYSCALL(name, nr, args...)	({			\
     50	long __sys_res;							\
     51	{								\
     52		register unsigned long __res __asm__("r28");		\
     53		K_LOAD_ARGS_##nr(args)					\
     54		/* FIXME: HACK stw/ldw r19 around syscall */		\
     55		__asm__ volatile(					\
     56			K_STW_ASM_PIC					\
     57			"	ble  0x100(%%sr2, %%r0)\n"		\
     58			"	ldi %1, %%r20\n"			\
     59			K_LDW_ASM_PIC					\
     60			: "=r" (__res)					\
     61			: "i" (SYS_ify(name)) K_ASM_ARGS_##nr   	\
     62			: "memory", K_CALL_CLOB_REGS K_CLOB_ARGS_##nr	\
     63		);							\
     64		__sys_res = (long)__res;				\
     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)						\
    108type name(void)								\
    109{									\
    110    return K_INLINE_SYSCALL(name, 0);	                                \
    111}
    112
    113#define _syscall1(type,name,type1,arg1)					\
    114type name(type1 arg1)							\
    115{									\
    116    return K_INLINE_SYSCALL(name, 1, arg1);	                        \
    117}
    118
    119#define _syscall2(type,name,type1,arg1,type2,arg2)			\
    120type 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)		\
    126type 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) \
    132type 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) \
    139type 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
    144#define __ARCH_WANT_NEW_STAT
    145#define __ARCH_WANT_STAT64
    146#define __ARCH_WANT_SYS_ALARM
    147#define __ARCH_WANT_SYS_GETHOSTNAME
    148#define __ARCH_WANT_SYS_PAUSE
    149#define __ARCH_WANT_SYS_SIGNAL
    150#define __ARCH_WANT_SYS_TIME32
    151#define __ARCH_WANT_COMPAT_SYS_SCHED_RR_GET_INTERVAL
    152#define __ARCH_WANT_SYS_UTIME32
    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_NICE
    158#define __ARCH_WANT_SYS_SIGPENDING
    159#define __ARCH_WANT_SYS_SIGPROCMASK
    160#define __ARCH_WANT_SYS_FORK
    161#define __ARCH_WANT_SYS_VFORK
    162#define __ARCH_WANT_SYS_CLONE
    163#define __ARCH_WANT_SYS_CLONE3
    164#define __ARCH_WANT_COMPAT_SYS_SENDFILE
    165#define __ARCH_WANT_COMPAT_STAT
    166
    167#ifdef CONFIG_64BIT
    168#define __ARCH_WANT_SYS_TIME
    169#define __ARCH_WANT_SYS_UTIME
    170#endif
    171
    172#endif /* __ASSEMBLY__ */
    173
    174#undef STR
    175
    176#endif /* _ASM_PARISC_UNISTD_H_ */