README revision 1.6
1 1.6 phx # $NetBSD: README,v 1.6 2023/05/14 16:13:05 phx Exp $ 2 1.2 perry 3 1.3 phx BUILD INSTRUCTIONS 4 1.1 is 5 1.3 phx Building LoadBSD isn't easy since several sources from the NetBSD repository 6 1.3 phx are required. Compiling these sources under AmigaOS without clashes with the 7 1.3 phx native GCC headers requires some knowledge. This document tries to describe 8 1.6 phx the steps necessary to rebuild LoadBSD with a modern AmigaOS gcc, or vbcc 9 1.6 phx with PosixLib. 10 1.6 phx These instructions do only apply for LoadBSD versions using the loadfile() 11 1.6 phx interface. Previous version do only require getopt.c and reboot.h. 12 1.3 phx 13 1.5 phx Note: It is not possible to build LoadBSD with the native NetBSD compiler! 14 1.3 phx LoadBSD is an *AmigaOS* program and must be built with an AmigaOS 15 1.3 phx compiler. Of course, a properly setup cross-compiler does work. 16 1.3 phx 17 1.3 phx Required sources from NetBSD (either HEAD or from a release branch) 18 1.3 phx 19 1.3 phx From src/sys/lib/libsa: loadfile.h,loadfile.c,loadfile_elf32.c,loadfile_aout.c 20 1.3 phx 21 1.3 phx place these files in the directory where you have loadbsd.c 22 1.3 phx 23 1.3 phx From src/sys/arch/m68k/include: aout_machdep.h,elf_machdep.h 24 1.3 phx 25 1.3 phx place these files in: <loadbsd directory>/include/m68k 26 1.3 phx 27 1.3 phx From src/sys/arch/amiga/include: aout_machdep.h,elf_machdep.h,loadfile_machdep.h 28 1.3 phx 29 1.3 phx place these files in: <loadbsd directory>/include/machine 30 1.3 phx 31 1.6 phx From src/sys/sys: exec.h,exec_elf.h,exec_aout.h,aout_mids.h,reboot.h 32 1.3 phx 33 1.3 phx place these files in: <loadbsd directory>/include/sys 34 1.3 phx 35 1.3 phx Additional headers (see below): inttypes.h,namespace.h,lib/libsa/stand.h,lib/libkern/libkern.h 36 1.3 phx 37 1.3 phx place these files in: <loadbsd directory>/include 38 1.3 phx 39 1.3 phx If all the mentioned files are placed at the correct place, loadfile_machdep.h 40 1.4 andvar must be modified. The patch is included below. Another small patch to 41 1.3 phx loadfile_aout.c must be applied to fix an incompatibility for LoadBSD. 42 1.3 phx However, that patch breaks loadfile() for other architectures using a.out! 43 1.3 phx Note: This patch is required to be able to suppress loaded symbols when 44 1.3 phx booting ancient a.out kernels that don't support them. Without the 45 1.3 phx patch symbol suppressing doesn't work! That also means ELF isn't 46 1.3 phx affected and LoadBSD could handle it differently but then it could 47 1.3 phx probably break in other unpredictable ways... 48 1.3 phx 49 1.6 phx The headers inttypes.h, namespace.h, include/lib/libsa/stand.h and 50 1.6 phx lib/libkern/libkern.h are listed completely below. 51 1.6 phx 52 1.6 phx Then it should be possible to recompile LoadBSD with gcc6 or newer by 53 1.6 phx typing "make" (or "make -f vmakefile" with vbcc). If make fails, fix the 54 1.6 phx problem and try again :-P 55 1.3 phx 56 1.3 phx Good luck! 57 1.3 phx 58 1.3 phx --- Missing files/patches --- 59 1.3 phx 60 1.6 phx include/machine/loadfile_machdep.h modification: 61 1.6 phx --cut-- 62 1.6 phx --- include/machine/loadfile_machdep.h~ Sun Mar 26 15:46:55 2023 63 1.6 phx +++ include/machine/loadfile_machdep.h Sun Mar 26 15:47:17 2023 64 1.6 phx @@ -38,7 +38,7 @@ 65 1.6 phx #define LOAD_KERNEL LOAD_ALL 66 1.6 phx #define COUNT_KERNEL COUNT_ALL 67 1.6 phx 68 1.6 phx -#ifdef _STANDALONE 69 1.6 phx +#if 0 70 1.6 phx 71 1.6 phx #define LOADADDR(a) ((a) + offset) 72 1.6 phx #define ALIGNENTRY(a) 0 73 1.6 phx --cut-- 74 1.6 phx 75 1.3 phx loadfile_aout.c modification: 76 1.3 phx --cut-- 77 1.3 phx --- loadfile_aout.c~ Mon Feb 11 21:25:56 2002 78 1.3 phx +++ loadfile_aout.c Thu Jan 23 10:43:27 2003 79 1.3 phx @@ -217,8 +217,8 @@ loadfile_aout(fd, x, marks, flags) 80 1.3 phx BCOPY(&x->a_syms, maxp, sizeof(x->a_syms)); 81 1.3 phx 82 1.3 phx if (flags & (LOAD_SYM|COUNT_SYM)) { 83 1.3 phx - maxp += sizeof(x->a_syms); 84 1.3 phx aoutp = maxp; 85 1.3 phx + maxp += sizeof(x->a_syms); 86 1.3 phx } 87 1.3 phx 88 1.3 phx if (x->a_syms > 0) { 89 1.3 phx --cut-- 90 1.3 phx 91 1.3 phx include/inttypes.h: 92 1.3 phx --cut-- 93 1.3 phx #ifndef _INTTYPES_H 94 1.3 phx #define _INTTYPES_H 95 1.3 phx 96 1.3 phx #include <sys/types.h> 97 1.6 phx #include <sys/cdefs.h> 98 1.6 phx 99 1.6 phx #ifndef be32toh 100 1.6 phx #define be32toh(x) (x) 101 1.6 phx #endif 102 1.6 phx 103 1.6 phx #ifndef roundup 104 1.6 phx #define roundup(x,y) ((((x)+((y)-1))/(y))*(y)) 105 1.6 phx #endif 106 1.3 phx 107 1.3 phx typedef unsigned long vaddr_t; 108 1.3 phx typedef unsigned long paddr_t; 109 1.3 phx 110 1.3 phx #endif /* !_INTTYPES_H */ 111 1.3 phx --cut-- 112 1.3 phx 113 1.3 phx include/namespace.h 114 1.3 phx --cut-- 115 1.3 phx #define _DIAGASSERT(x) /**/ 116 1.3 phx 117 1.3 phx extern char *program_name; 118 1.3 phx #define getprogname() program_name 119 1.6 phx 120 1.6 phx #ifndef __UNCONST 121 1.6 phx #define __UNCONST(a) ((void *)(unsigned long)(const void *)(a)) 122 1.6 phx #endif 123 1.3 phx --cut-- 124 1.3 phx 125 1.3 phx include/lib/libsa/stand.h 126 1.3 phx --cut-- 127 1.3 phx #include <stdio.h> 128 1.3 phx #include <string.h> 129 1.3 phx #include <errno.h> 130 1.3 phx #include <stdlib.h> 131 1.3 phx #include <unistd.h> 132 1.3 phx #include <fcntl.h> 133 1.3 phx #include "inttypes.h" 134 1.3 phx --cut-- 135 1.3 phx 136 1.3 phx include/lib/libkern/libkern.h 137 1.3 phx --cut-- 138 1.3 phx /* nothing, must only exist! */ 139 1.3 phx --cut-- 140
Indexes created Mon Sep 29 21:09:56 GMT 2025