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45 lines
781 B
ArmAsm
45 lines
781 B
ArmAsm
/* ==== syscall.S ============================================================
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* Copyright (c) 1994 Chris Provenzano, proven@mit.edu
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* All rights reserved.
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*
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*/
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#ifndef lint
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.text
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.asciz "$Id$";
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#endif
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#define _ASM
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#include <sys/syscall.h>
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/*
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* Initial asm stuff for all functions.
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*/
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.text
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.align 4
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/* ==========================================================================
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* error code for all syscalls. The error value is returned as the negative
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* of the errno value.
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*/
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1:
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sub %r0, %o0, %o0
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2:
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retl
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nop
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#define concat2(a,b) a ## b
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#define concat(a,b) concat2(a,b)
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#define SYSval concat(SYS_,SYSCALL_NAME)
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#define procname concat(machdep_sys_,SYSCALL_NAME)
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.globl procname
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procname:
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mov SYSval, %g1
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ta 0
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bcs,a 2b
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sub %r0,%o0,%o0
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retl
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nop
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