73d4393d1d
On AVR32, all parameters beyond the 5th are passed on the stack. System calls don't use the stack -- they borrow a callee-saved register instead. This means that syscalls that take 6 parameters must be called through a stub that pushes the last parameter on the stack. This patch adds a stub for sync_file_range syscall on AVR32 architecture. Tested with uClibc snapshot. Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
121 lines
2.1 KiB
ArmAsm
121 lines
2.1 KiB
ArmAsm
/*
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* Copyright (C) 2005-2006 Atmel Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/*
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* Stubs for syscalls that require access to pt_regs or that take more
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* than five parameters.
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*/
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#define ARG6 r3
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.text
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.global __sys_rt_sigsuspend
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.type __sys_rt_sigsuspend,@function
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__sys_rt_sigsuspend:
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mov r10, sp
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rjmp sys_rt_sigsuspend
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.global __sys_sigaltstack
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.type __sys_sigaltstack,@function
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__sys_sigaltstack:
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mov r10, sp
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rjmp sys_sigaltstack
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.global __sys_rt_sigreturn
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.type __sys_rt_sigreturn,@function
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__sys_rt_sigreturn:
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mov r12, sp
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rjmp sys_rt_sigreturn
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.global __sys_fork
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.type __sys_fork,@function
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__sys_fork:
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mov r12, sp
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rjmp sys_fork
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.global __sys_clone
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.type __sys_clone,@function
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__sys_clone:
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mov r8, sp
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rjmp sys_clone
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.global __sys_vfork
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.type __sys_vfork,@function
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__sys_vfork:
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mov r12, sp
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rjmp sys_vfork
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.global __sys_execve
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.type __sys_execve,@function
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__sys_execve:
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mov r9, sp
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rjmp sys_execve
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.global __sys_mmap2
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.type __sys_mmap2,@function
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__sys_mmap2:
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pushm lr
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st.w --sp, ARG6
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rcall sys_mmap2
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sub sp, -4
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popm pc
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.global __sys_sendto
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.type __sys_sendto,@function
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__sys_sendto:
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pushm lr
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st.w --sp, ARG6
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rcall sys_sendto
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sub sp, -4
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popm pc
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.global __sys_recvfrom
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.type __sys_recvfrom,@function
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__sys_recvfrom:
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pushm lr
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st.w --sp, ARG6
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rcall sys_recvfrom
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sub sp, -4
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popm pc
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.global __sys_pselect6
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.type __sys_pselect6,@function
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__sys_pselect6:
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pushm lr
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st.w --sp, ARG6
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rcall sys_pselect6
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sub sp, -4
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popm pc
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.global __sys_splice
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.type __sys_splice,@function
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__sys_splice:
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pushm lr
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st.w --sp, ARG6
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rcall sys_splice
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sub sp, -4
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popm pc
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.global __sys_epoll_pwait
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.type __sys_epoll_pwait,@function
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__sys_epoll_pwait:
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pushm lr
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st.w --sp, ARG6
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rcall sys_epoll_pwait
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sub sp, -4
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popm pc
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.global __sys_sync_file_range
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.type __sys_sync_file_range,@function
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__sys_sync_file_range:
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pushm lr
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st.w --sp, ARG6
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rcall sys_sync_file_range
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sub sp, -4
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popm pc
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