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Added the new files to the build, and implemented a real startup. 

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7240 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-04-19 01:57:29 +00:00
parent b2f8da6214
commit 3796dbef26
2 changed files with 54 additions and 17 deletions
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8
src/kernel/boot/platform/bios_ia32/Jamfile
View File

@ -3,10 +3,12 @@ SubDir OBOS_TOP src kernel boot platform bios_ia32 ;
SubDirHdrs $(OBOS_TOP) headers private kernel boot platform $(OBOS_BOOT_PLATFORM) ;
KernelMergeObject boot_platform_bios_ia32.o :
<$(SOURCE_GRIST)>shell.S
<$(SOURCE_GRIST)>start.c
<$(SOURCE_GRIST)>debug.c
<$(SOURCE_GRIST)>bios.S
<$(SOURCE_GRIST)>console.cpp
<$(SOURCE_GRIST)>devices.cpp
<$(SOURCE_GRIST)>mmu.cpp
:
;
SEARCH on [ FGristFiles crt0.S ]
= [ FDirName $(OBOS_TOP) src kernel boot arch $(OBOS_ARCH) ] ;

63
src/kernel/boot/platform/bios_ia32/start.c
View File

@ -1,9 +1,12 @@
/*
** Copyright 2003, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
** Copyright 2003-2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
** Distributed under the terms of the OpenBeOS License.
*/
#include "console.h"
#include "mmu.h"
#include <SupportDefs.h>
#include <boot/platform.h>
#include <boot/heap.h>
@ -11,26 +14,33 @@
#include <string.h>
#define HEAP_SIZE 32768
// GCC defined globals
extern void (*__ctor_list)(void);
extern void (*__ctor_end)(void);
extern uint8 __bss_start;
extern uint8 _end;
extern int main(stage2_args *args);
void _start(void);
int32 stdin, stdout;
// only needed for linking, must be derived from the (abstract) ConsoleNode class
// dummy implementations
void
panic(const char *format, ...)
static void
clear_bss(void)
{
memset(&__bss_start, 0, &_end - &__bss_start);
}
void
dprintf(const char *format, ...)
{
static void
call_ctors(void)
{
void (**f)(void);
for (f = &__ctor_list; f < &__ctor_end; f++) {
(**f)();
}
}
@ -44,6 +54,7 @@ platform_user_menu_requested(void)
status_t
platform_allocate_region(void **_address, size_t size, uint8 protection)
{
puts(__FUNCTION__);
return B_ERROR;
}
@ -51,6 +62,7 @@ platform_allocate_region(void **_address, size_t size, uint8 protection)
status_t
platform_free_region(void *address, size_t size)
{
puts(__FUNCTION__);
return B_ERROR;
}
@ -58,18 +70,41 @@ platform_free_region(void *address, size_t size)
void
platform_release_heap(struct stage2_args *args, void *base)
{
mmu_free(base, args->heap_size);
}
status_t
platform_init_heap(struct stage2_args *args, void **_base, void **_top)
{
void *heap = mmu_allocate(NULL, args->heap_size);
if (heap == NULL)
return B_NO_MEMORY;
*_base = heap;
*_top = (void *)((int8 *)heap + args->heap_size);
return B_OK;
}
void
_start(void)
{
main(NULL);
stage2_args args;
asm("cld"); // Ain't nothing but a GCC thang.
asm("fninit"); // initialize floating point unit
clear_bss();
call_ctors();
// call C++ constructors before doing anything else
args.heap_size = HEAP_SIZE;
console_init();
mmu_init();
main(&args);
}