2006-05-30 Shaun Jackman <sjackman@gmail.com>
* arm/Makefile.in: Add Linux syscall interface.
* arm/linux-crt0.S: New file.
* arm/linux-syscall.h: New file.
* arm/linux-syscalls0.S: New file.
* arm/linux-syscalls1.c: New file.
This commit is contained in:
Jeff Johnston
196
libgloss/arm/linux-syscalls0.S
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196
libgloss/arm/linux-syscalls0.S
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@ -0,0 +1,196 @@
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/** Linux system call interface for the ARM processor.
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* Written by Shaun Jackman <sjackman@gmail.com>.
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* Copyright 2006 Pathway Connectivity
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*
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* Permission to use, copy, modify, and distribute this software
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* is freely granted, provided that this notice is preserved.
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*/
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#include "linux-syscall.h"
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#if __thumb__
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# define FUNC(name) .type name, %function; .thumb_func; name:
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# define SET .thumb_set
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#else
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# define FUNC(name) .type name, %function; name:
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# define SET .set
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#endif
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#define GLOBAL(name) .global name; FUNC(name)
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#define SIZE(name) .size name, .-name
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#if __thumb__
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# define SYSCALL0(name) \
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GLOBAL(_ ## name); \
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mov r12, r7; \
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mov r7, #SYS_ ## name; \
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swi; \
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mov r7, r12; \
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b _set_errno; \
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SIZE(_ ## name)
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/* static int _syscall3(int a, int b, int c, int number); */
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FUNC(_syscall3)
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push { r7 }
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mov r7, r3
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swi
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pop { r7 }
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b _set_errno
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SIZE(_syscall3)
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# define SYSCALL3(name) \
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GLOBAL(_ ## name); \
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mov r3, #SYS_ ## name; \
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b _syscall3; \
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SIZE(_ ## name)
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# define SYSCALL6(name) \
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GLOBAL(_ ## name); \
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push { r4 - r5, r7 }; \
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ldr r4, [sp, #12]; \
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ldr r5, [sp, #16]; \
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mov r7, #SYS_ ## name; \
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swi; \
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pop { r4 - r5, r7 }; \
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b _set_errno; \
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SIZE(_ ## name)
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# define SYSCALL4(name) SYSCALL6(name)
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#else /* __thumb__ */
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# define SYSCALL4(name) \
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GLOBAL(_ ## name); \
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swi #SYS_ ## name; \
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b _set_errno; \
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SIZE(_ ## name)
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# define SYSCALL6(name) \
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GLOBAL(_ ## name); \
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push { r4 - r5 }; \
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ldr r4, [sp, #8]; \
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ldr r5, [sp, #12]; \
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swi #SYS_ ## name; \
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pop { r4 - r5 }; \
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b _set_errno; \
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SIZE(_ ## name)
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#define SYSCALL0(name) SYSCALL3(name)
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#define SYSCALL3(name) SYSCALL4(name)
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#endif /* __thumb__ */
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#define SYSCALL1(name) SYSCALL3(name)
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#define SYSCALL2(name) SYSCALL3(name)
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#define SYSCALL5(name) SYSCALL6(name)
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SYSCALL1(alarm)
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SYSCALL1(brk)
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SYSCALL1(chdir)
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SYSCALL2(chmod)
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SYSCALL3(chown)
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SYSCALL1(close)
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SYSCALL1(dup)
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SYSCALL2(dup2)
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SYSCALL3(execve)
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SYSCALL1(exit)
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SYSCALL3(fcntl)
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SYSCALL2(fstat)
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SYSCALL3(getdents)
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SYSCALL0(getpid)
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SYSCALL2(gettimeofday)
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SYSCALL3(ioctl)
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SYSCALL2(kill)
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SYSCALL2(link)
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SYSCALL3(lseek)
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SYSCALL2(lstat)
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SYSCALL2(mkdir)
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SYSCALL3(mknod)
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SYSCALL2(nanosleep)
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SYSCALL3(open)
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SYSCALL3(read)
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SYSCALL3(readlink)
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SYSCALL4(reboot)
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SYSCALL1(rmdir)
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SYSCALL5(select)
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SYSCALL2(socketcall)
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SYSCALL2(stat)
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SYSCALL1(stime)
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SYSCALL2(symlink)
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SYSCALL1(sysinfo)
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SYSCALL1(times)
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SYSCALL2(truncate)
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SYSCALL1(umask)
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SYSCALL1(unlink)
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SYSCALL2(utime)
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SYSCALL0(vfork)
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SYSCALL4(wait4)
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SYSCALL3(write)
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#define ALIAS(name) .GLOBAL name; SET name, _ ## name
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ALIAS(alarm)
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ALIAS(chdir)
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ALIAS(chmod)
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ALIAS(chown)
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ALIAS(dup)
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ALIAS(dup2)
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ALIAS(getdents)
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ALIAS(ioctl)
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ALIAS(lstat)
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ALIAS(mkdir)
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ALIAS(mknod)
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ALIAS(nanosleep)
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ALIAS(readlink)
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ALIAS(reboot)
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ALIAS(rmdir)
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ALIAS(select)
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ALIAS(stime)
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ALIAS(symlink)
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ALIAS(sysinfo)
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ALIAS(truncate)
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ALIAS(umask)
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ALIAS(utime)
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ALIAS(vfork)
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ALIAS(wait4)
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# define SOCKETCALL(name, NAME) \
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GLOBAL(name); \
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push { r0 - r3 }; \
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mov r0, #SYS_ ## NAME; \
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b _socketcall_tail; \
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SIZE(name)
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FUNC(_socketcall_tail)
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mov r1, sp
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push { lr }
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bl _socketcall
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pop { r3 }
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add sp, #16
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bx r3
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SIZE(_socketcall_tail)
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#define SOCKETCALL2(name, NAME) SOCKETCALL(name, NAME)
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#define SOCKETCALL3(name, NAME) SOCKETCALL(name, NAME)
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#define SOCKETCALL4(name, NAME) SOCKETCALL(name, NAME)
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#define SOCKETCALL5(name, NAME) SOCKETCALL(name, NAME)
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#define SOCKETCALL6(name, NAME) SOCKETCALL(name, NAME)
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SOCKETCALL3(accept, ACCEPT)
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SOCKETCALL3(bind, BIND)
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SOCKETCALL3(connect, CONNECT)
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SOCKETCALL3(getpeername, GETPEERNAME)
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SOCKETCALL3(getsockname, GETSOCKNAME)
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SOCKETCALL5(getsockopt, GETSOCKOPT)
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SOCKETCALL2(listen, LISTEN)
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SOCKETCALL4(recv, RECV)
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SOCKETCALL6(recvfrom, RECVFROM)
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SOCKETCALL3(recvmsg, RECVMSG)
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SOCKETCALL4(send, SEND)
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SOCKETCALL3(sendmsg, SENDMSG)
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SOCKETCALL6(sendto, SENDTO)
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SOCKETCALL5(setsockopt, SETSOCKOPT)
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SOCKETCALL2(shutdown, SHUTDOWN)
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SOCKETCALL3(socket, SOCKET)
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SOCKETCALL4(socketpair, SOCKETPAIR)
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