diff options
Diffstat (limited to 'sys/arch/i386/stand/libsa/exec_i386.c')
| -rw-r--r-- | sys/arch/i386/stand/libsa/exec_i386.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/sys/arch/i386/stand/libsa/exec_i386.c b/sys/arch/i386/stand/libsa/exec_i386.c new file mode 100644 index 00000000000..3a437498264 --- /dev/null +++ b/sys/arch/i386/stand/libsa/exec_i386.c @@ -0,0 +1,51 @@ + +/* $OpenBSD: exec_i386.c,v 1.1 1997/03/31 03:12:13 weingart Exp $ */ + +#include <sys/param.h> +#include <sys/exec.h> +#include <sys/reboot.h> +#include <libsa.h> + + +void +machdep_start(startaddr, howto, loadaddr, ssym, esym) + char *startaddr, *loadaddr, *ssym, *esym; + int howto; +{ + static int argv[9]; + static int (*x_entry)() = 0; + + x_entry = (void *)startaddr; + (int)startaddr &= 0xffffff; + + /* + * We now pass the various bootstrap parameters to the loaded + * image via the argument list + * + * arg0 = 8 (magic) + * arg1 = boot flags + * arg2 = boot device + * arg3 = start of symbol table (0 if not loaded) + * arg4 = end of symbol table (0 if not loaded) + * arg5 = transfer address from image + * arg6 = transfer address for next image pointer + * arg7 = conventional memory size (640) + * arg8 = extended memory size (8196) + */ + argv[0] = 8; + argv[1] = howto; + argv[2] = 0; /* Boot device */ + argv[3] = 0; /* Cyl offset */ + argv[4] = (int)esym; + argv[5] = (int)startaddr; + argv[6] = (int)&x_entry; + argv[7] = 0; + argv[8] = 0; + + /****************************************************************/ + /* copy that first page and overwrite any BIOS variables */ + /****************************************************************/ + printf("entry point at 0x%x\n", (int)startaddr); + startprog(startaddr, argv); +} + |