Axel Dörfler
fbe5e77d0b
elf_load_image() now uses this heap for the preloaded_image structures. Moved gKernelArgs and gKernelEntry to different files. Improved enabling debug output (it can now be activated by a makefile, too) git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7281 a95241bf-73f2-0310-859d-f6bbb57e9c96
116 lines
2.4 KiB
C++
116 lines
2.4 KiB
C++
/*
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** Copyright 2003-2004, Axel Dörfler, [email protected]. All rights reserved.
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** Distributed under the terms of the OpenBeOS License.
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*/
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#include "loader.h"
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#include "elf.h"
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#include <OS.h>
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#include <boot/stage2.h>
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#include <boot/vfs.h>
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#include <boot/platform.h>
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#include <boot/stdio.h>
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#include <unistd.h>
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#ifndef BOOT_ARCH
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# error BOOT_ARCH has to be defined to differentiate the kernel per platform
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#endif
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#define KERNEL_IMAGE "kernel_" BOOT_ARCH
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#define KERNEL_PATH "beos/system/" KERNEL_IMAGE
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// temp. VFS API
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extern Node *get_node_from(int fd);
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addr_t gKernelEntry;
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bool
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is_bootable(Directory *volume)
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{
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if (volume->IsEmpty())
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return false;
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// check for the existance of a kernel (for our platform)
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int fd = open_from(volume, KERNEL_PATH, O_RDONLY);
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if (fd < B_OK)
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return false;
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close(fd);
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return true;
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}
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status_t
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load_kernel(stage2_args *args, Directory *volume)
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{
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int fd = open_from(volume, KERNEL_PATH, O_RDONLY);
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if (fd < B_OK)
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return fd;
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puts("load kernel...");
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preloaded_image image;
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status_t status = elf_load_image(fd, &image);
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close(fd);
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if (status < B_OK) {
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printf("loading kernel failed: %ld!\n", status);
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return status;
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}
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puts("kernel loaded successfully");
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// init kernel args with loaded image data
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gKernelArgs.kernel_seg0_addr.start = image.text_region.start;
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gKernelArgs.kernel_seg0_addr.size = image.text_region.size;
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gKernelArgs.kernel_seg1_addr.start = image.data_region.start;
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gKernelArgs.kernel_seg1_addr.size = image.data_region.size;
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gKernelArgs.kernel_dynamic_section_addr = image.dynamic_section;
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gKernelEntry = image.elf_header.e_entry;
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/* void *cookie;
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if (volume->Open(&cookie, O_RDONLY) == B_OK) {
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char name[B_FILE_NAME_LENGTH];
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while (volume->GetNextEntry(cookie, name, sizeof(name)) == B_OK)
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printf("\t%s\n", name);
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volume->Close(cookie);
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}*/
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return B_OK;
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}
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status_t
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load_modules(stage2_args *args, Directory *volume)
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{
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// we don't have readdir() & co. yet...
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int fd = open_from(volume, "beos/system/add-ons/kernel/boot", O_RDONLY);
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if (fd < B_OK)
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return fd;
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Directory *modules = (Directory *)get_node_from(fd);
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if (modules == NULL)
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return B_ENTRY_NOT_FOUND;
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void *cookie;
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if (modules->Open(&cookie, O_RDONLY) == B_OK) {
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char name[B_FILE_NAME_LENGTH];
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while (modules->GetNextEntry(cookie, name, sizeof(name)) == B_OK)
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printf("\t%s\n", name);
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modules->Close(cookie);
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}
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return B_OK;
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}
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