mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-21 06:50:25 +00:00
f646429524
- Add gettimeofday() and clock_gettime() vDSO functions
- Enable PCI_MSI_ARCH_FALLBACKS to allow PCI to PCIe bridge adaptor
with PCIe NVME card to function in parisc machines
- Allow users to reduce kernel unaligned runtime warnings
- minor code cleanups
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Merge tag 'parisc-for-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"The gettimeofday() and clock_gettime() syscalls are now available as
vDSO functions, and Dave added a patch which allows to use NVMe cards
in the PCI slots as fast and easy alternative to SCSI discs.
Summary:
- add gettimeofday() and clock_gettime() vDSO functions
- enable PCI_MSI_ARCH_FALLBACKS to allow PCI to PCIe bridge adaptor
with PCIe NVME card to function in parisc machines
- allow users to reduce kernel unaligned runtime warnings
- minor code cleanups"
* tag 'parisc-for-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Add support for CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
parisc: Use max() to calculate parisc_tlb_flush_threshold
parisc: Fix warning at drivers/pci/msi/msi.h:121
parisc: Add 64-bit gettimeofday() and clock_gettime() vDSO functions
parisc: Add 32-bit gettimeofday() and clock_gettime() vDSO functions
parisc: Clean up unistd.h file
151 lines
4.8 KiB
C
151 lines
4.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_PARISC_UNISTD_H_
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#define _ASM_PARISC_UNISTD_H_
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#include <uapi/asm/unistd.h>
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#define __NR_Linux_syscalls __NR_syscalls
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#ifndef __ASSEMBLY__
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#define SYS_ify(syscall_name) __NR_##syscall_name
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#define __IGNORE_fadvise64 /* fadvise64_64 */
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#ifndef ASM_LINE_SEP
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# define ASM_LINE_SEP ;
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#endif
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/* Definition taken from glibc 2.3.3
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* sysdeps/unix/sysv/linux/hppa/sysdep.h
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*/
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#ifndef DONT_USE_PIC
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/* WARNING: CANNOT BE USED IN A NOP! */
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# define K_STW_ASM_PIC " copy %%r19, %%r4\n"
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# define K_LDW_ASM_PIC " copy %%r4, %%r19\n"
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# define K_USING_GR4 "%r4",
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#else
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# define K_STW_ASM_PIC " \n"
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# define K_LDW_ASM_PIC " \n"
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# define K_USING_GR4
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#endif
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/* GCC has to be warned that a syscall may clobber all the ABI
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registers listed as "caller-saves", see page 8, Table 2
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in section 2.2.6 of the PA-RISC RUN-TIME architecture
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document. However! r28 is the result and will conflict with
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the clobber list so it is left out. Also the input arguments
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registers r20 -> r26 will conflict with the list so they
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are treated specially. Although r19 is clobbered by the syscall
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we cannot say this because it would violate ABI, thus we say
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r4 is clobbered and use that register to save/restore r19
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across the syscall. */
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#define K_CALL_CLOB_REGS "%r1", "%r2", K_USING_GR4 \
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"%r20", "%r29", "%r31"
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#undef K_INLINE_SYSCALL
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#define K_INLINE_SYSCALL(name, nr, args...) ({ \
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long __sys_res; \
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{ \
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register unsigned long __res __asm__("r28"); \
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K_LOAD_ARGS_##nr(args) \
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/* FIXME: HACK stw/ldw r19 around syscall */ \
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__asm__ volatile( \
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K_STW_ASM_PIC \
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" ble 0x100(%%sr2, %%r0)\n" \
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" ldi %1, %%r20\n" \
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K_LDW_ASM_PIC \
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: "=r" (__res) \
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: "i" (name) K_ASM_ARGS_##nr \
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: "memory", K_CALL_CLOB_REGS K_CLOB_ARGS_##nr \
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); \
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__sys_res = (long)__res; \
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} \
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__sys_res; \
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})
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#define K_LOAD_ARGS_0()
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#define K_LOAD_ARGS_1(r26) \
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register unsigned long __r26 __asm__("r26") = (unsigned long)(r26); \
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K_LOAD_ARGS_0()
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#define K_LOAD_ARGS_2(r26,r25) \
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register unsigned long __r25 __asm__("r25") = (unsigned long)(r25); \
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K_LOAD_ARGS_1(r26)
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#define K_LOAD_ARGS_3(r26,r25,r24) \
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register unsigned long __r24 __asm__("r24") = (unsigned long)(r24); \
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K_LOAD_ARGS_2(r26,r25)
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#define K_LOAD_ARGS_4(r26,r25,r24,r23) \
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register unsigned long __r23 __asm__("r23") = (unsigned long)(r23); \
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K_LOAD_ARGS_3(r26,r25,r24)
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#define K_LOAD_ARGS_5(r26,r25,r24,r23,r22) \
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register unsigned long __r22 __asm__("r22") = (unsigned long)(r22); \
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K_LOAD_ARGS_4(r26,r25,r24,r23)
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#define K_LOAD_ARGS_6(r26,r25,r24,r23,r22,r21) \
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register unsigned long __r21 __asm__("r21") = (unsigned long)(r21); \
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K_LOAD_ARGS_5(r26,r25,r24,r23,r22)
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/* Even with zero args we use r20 for the syscall number */
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#define K_ASM_ARGS_0
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#define K_ASM_ARGS_1 K_ASM_ARGS_0, "r" (__r26)
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#define K_ASM_ARGS_2 K_ASM_ARGS_1, "r" (__r25)
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#define K_ASM_ARGS_3 K_ASM_ARGS_2, "r" (__r24)
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#define K_ASM_ARGS_4 K_ASM_ARGS_3, "r" (__r23)
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#define K_ASM_ARGS_5 K_ASM_ARGS_4, "r" (__r22)
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#define K_ASM_ARGS_6 K_ASM_ARGS_5, "r" (__r21)
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/* The registers not listed as inputs but clobbered */
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#define K_CLOB_ARGS_6
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#define K_CLOB_ARGS_5 K_CLOB_ARGS_6, "%r21"
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#define K_CLOB_ARGS_4 K_CLOB_ARGS_5, "%r22"
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#define K_CLOB_ARGS_3 K_CLOB_ARGS_4, "%r23"
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#define K_CLOB_ARGS_2 K_CLOB_ARGS_3, "%r24"
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#define K_CLOB_ARGS_1 K_CLOB_ARGS_2, "%r25"
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#define K_CLOB_ARGS_0 K_CLOB_ARGS_1, "%r26"
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#define syscall0(name) \
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K_INLINE_SYSCALL(name, 0)
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#define syscall1(name, arg1) \
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K_INLINE_SYSCALL(name, 1, arg1)
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#define syscall2(name, arg1, arg2) \
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K_INLINE_SYSCALL(name, 2, arg1, arg2)
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#define syscall3(name, arg1, arg2, arg3) \
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K_INLINE_SYSCALL(name, 3, arg1, arg2, arg3)
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#define syscall4(name, arg1, arg2, arg3, arg4) \
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K_INLINE_SYSCALL(name, 4, arg1, arg2, arg3, arg4)
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#define syscall5(name, arg1, arg2, arg3, arg4, arg5) \
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K_INLINE_SYSCALL(name, 5, arg1, arg2, arg3, arg4, arg5)
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#define __ARCH_WANT_NEW_STAT
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#define __ARCH_WANT_STAT64
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#define __ARCH_WANT_SYS_ALARM
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#define __ARCH_WANT_SYS_GETHOSTNAME
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#define __ARCH_WANT_SYS_PAUSE
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#define __ARCH_WANT_SYS_SIGNAL
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#define __ARCH_WANT_SYS_TIME32
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#define __ARCH_WANT_COMPAT_SYS_SCHED_RR_GET_INTERVAL
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#define __ARCH_WANT_SYS_UTIME32
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#define __ARCH_WANT_SYS_WAITPID
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#define __ARCH_WANT_SYS_SOCKETCALL
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#define __ARCH_WANT_SYS_FADVISE64
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#define __ARCH_WANT_SYS_GETPGRP
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#define __ARCH_WANT_SYS_NICE
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#define __ARCH_WANT_SYS_SIGPENDING
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#define __ARCH_WANT_SYS_SIGPROCMASK
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#define __ARCH_WANT_SYS_FORK
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#define __ARCH_WANT_SYS_VFORK
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#define __ARCH_WANT_SYS_CLONE
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#define __ARCH_WANT_COMPAT_SYS_SENDFILE
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#define __ARCH_WANT_COMPAT_STAT
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#ifdef CONFIG_64BIT
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#define __ARCH_WANT_SYS_TIME
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#define __ARCH_WANT_SYS_UTIME
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#endif
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#endif /* __ASSEMBLY__ */
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#undef STR
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#endif /* _ASM_PARISC_UNISTD_H_ */
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