From f95a4a932476be2ba99e2fd081e8d2bc6ea12813 Mon Sep 17 00:00:00 2001 From: PikalaxALT Date: Fri, 15 Dec 2017 09:38:53 -0500 Subject: Import newlib and create makefile --- newlib/libc/sys/h8500hms/crt0.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 newlib/libc/sys/h8500hms/crt0.c (limited to 'newlib/libc/sys/h8500hms/crt0.c') diff --git a/newlib/libc/sys/h8500hms/crt0.c b/newlib/libc/sys/h8500hms/crt0.c new file mode 100644 index 0000000..fa7d1b9 --- /dev/null +++ b/newlib/libc/sys/h8500hms/crt0.c @@ -0,0 +1,32 @@ + +extern char _start_bss; +extern char end; +extern char stack; + +static zeroandrun(); +#pragma noprolog + +start() +{ + asm("mov.w #%off(_stack),sp"); +/* asm("ldc.w #0x700,sr");*/ + asm("ldc.b #%page(_stack),tp"); + asm("ldc.b #%page(_stack),dp"); + asm("ldc.b #%page(_stack),ep"); + /* Can't have anything else in here, since the fp won't be set up + so local variables won't work */ + zeroandrun(); +} + +static +zeroandrun() +{ + char *p; + p = &_start_bss; + while (p < &end) + { + *p++ = 0; + } + main(); + _exit(); +} -- cgit v1.2.3