diff options
Diffstat (limited to 'libgloss/moxie/crt0.S')
| -rw-r--r-- | libgloss/moxie/crt0.S | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/libgloss/moxie/crt0.S b/libgloss/moxie/crt0.S index e7c64a68b..d413a4580 100644 --- a/libgloss/moxie/crt0.S +++ b/libgloss/moxie/crt0.S @@ -1,6 +1,6 @@ /* crt0.S -- startup file for moxie * - * Copyright (c) 2008 Anthony Green + * Copyright (c) 2008, 2009 Anthony Green * * The authors hereby grant permission to use, copy, modify, distribute, * and license this software and its documentation for any purpose, provided @@ -23,12 +23,22 @@ _start: ldi.l $fp, 0x0 /* zero fp to allow unwinders to stop */ /* zero the bss area */ - /* TODO */ - /* call memset */ + dec $sp, 12 + ldi.l $r0, __bss_start__ + ldi.l $r1, __bss_end__ + sub.l $r1, $r0 + sto.l 8($sp), $r1 + ldi.l $r1, 0 + jsra memset + inc $sp, 12 - /* Call _init to invoke static constructors, etc. */ + /* Call _init to invoke static constructors, etc. */ jsra _init + /* Call _fini at exit time for static destructors. */ + ldi.l $r0, _fini + jsra atexit + /* Set argc and argv. These are populated by the simulator. */ lda.l $r0, 0x4 ldi.l $r1, 0x8 |