/* * There is an ELF kernel and one or more ELF modules loaded. * We wish to start executing the kernel image, so make such * preparations as are required, and do so. */ static int elf32_exec(struct preloaded_file *fp) { struct file_metadata *md; Elf_Ehdr *ehdr; vm_offset_t entry, bootinfop, modulep, kernend; int boothowto, err, bootdev; if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) return(EFTYPE); ehdr = (Elf_Ehdr *)&(md->md_data); err = bi_load32(fp->f_args, &boothowto, &bootdev, &bootinfop, &modulep, &kernend); if (err != 0) return(err); entry = ehdr->e_entry & 0xffffff; #ifdef DEBUG printf("Start @ 0x%lx ...\n", entry); #endif dev_cleanup(); __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop, modulep, kernend); panic("exec returned"); }
/* * There is an ELF kernel and one or more ELF modules loaded. * We wish to start executing the kernel image, so make such * preparations as are required, and do so. */ static int elf32_exec(struct preloaded_file *fp) { struct file_metadata *md; Elf_Ehdr *ehdr; vm_offset_t entry, bootinfop, modulep, kernend; int boothowto, err, bootdev; uint32_t stack[1024]; if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) return(EFTYPE); ehdr = (Elf_Ehdr *)&(md->md_data); err = bi_load32(fp->f_args, &boothowto, &bootdev, &bootinfop, &modulep, &kernend); if (err != 0) return(err); entry = ehdr->e_entry & 0xffffff; #ifdef DEBUG printf("Start @ 0x%lx ...\n", entry); #endif dev_cleanup(); /* * Build a scratch stack at physical 0x1000 */ stack[0] = boothowto; stack[1] = bootdev; stack[2] = 0; stack[3] = 0; stack[4] = 0; stack[5] = bootinfop; stack[6] = modulep; stack[7] = kernend; CALLBACK(copyin, stack, 0x1000, sizeof(stack)); CALLBACK(setreg, 4, 0x1000); CALLBACK(exec, entry); panic("exec returned"); }