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Diffstat (limited to 'libgloss/msp430/syscalls.S')
-rw-r--r-- | libgloss/msp430/syscalls.S | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/libgloss/msp430/syscalls.S b/libgloss/msp430/syscalls.S deleted file mode 100644 index 8aa22ae8a..000000000 --- a/libgloss/msp430/syscalls.S +++ /dev/null @@ -1,66 +0,0 @@ -/* Copyright (c) 2012, 2013 Red Hat, Inc. All rights reserved. - - This copyrighted material is made available to anyone wishing to use, modify, - copy, or redistribute it subject to the terms and conditions of the BSD - License. This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties - of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license - is available at http://www.opensource.org/licenses. Any Red Hat trademarks that - are incorporated in the source code or documentation are not subject to the BSD - License and may only be used or replicated with the express permission of - Red Hat, Inc. -*/ - -/* Be wary: the lower N bits of the *address* of the function - determines the syscall used by the simulator. Thus, the addresses - listed here depend on the syscall numbers in ../syscalls.h. */ - -/* As per the MSP430x200 Family Users Guide, section 1.5, "An - instruction fetch from the address range 0x0000 - 0x01FF will reset - the device." We take advantage of that to do syscalls in the - simulator, by trying to execute specific addresses in that range - and letting the simulator catch them while simulating the CALL - instruction. In theory, this is an operation that the physical - hardware will never attempt to do, so it won't interfere with the - simulation's accuracy (i.e. we aren't abusing holes in the opcode - map, for example). */ - -#include "../syscall.h" -#include "memmodel.h" - -.macro sc,a - sc2 \a,\a -.endm - -.macro sc2,name,num - .weak \name - .global \name - \name = 0x180 + \num -.endm - -#define SC(n) sc2 n,SYS_##n - - sc2 _exit,SYS_exit - SC (exit) - SC (open) - SC (close) - SC (read) -/* SC (write)*/ - SC (fstat) - SC (lseek) - SC (kill) - - .weak isatty - .global isatty -isatty: - .weak _isatty - .global _isatty -_isatty: - MOV #1,R12 - ret_ - - .weak getpid - .global getpid -getpid: - MOV #42,R12 - ret_ |