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tool/linker/ex9/buildall.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+# 
+# Unlike the DOS batch files, this script is much more powerful.
+# In fact, this script BUILDs the DOS batch files.
+# 
+# NTS: Make sure your editor uses unix LF endings in the file,
+#      but keeps the CR LF DOS endings for the DOS batch files.
+
+for i in *; do if [ -d "$i" ]; then
+    if [ -x "$i/buildall.sh" ]; then
+        cp -v -u buildall.sh "$i/buildall.sh" || exit 1
+    fi
+
+    (cd $i && (
+        if [ -x buildall.sh ]; then
+            ./buildall.sh $* || exit 1
+        fi
+
+        if [ -x make.sh ]; then
+            ./make.sh $* || exit 1
+        fi)
+    ) || exit 1
+fi; done
+

tool/linker/ex9/code32.asm

@@ -0,0 +1,19 @@
+
+section _TEXT align=1 class=CODE use32
+
+global entry_code32
+entry_code32:
+    mov     eax,0x12345678
+    mov     esi,_ex_data32
+    call    function32
+
+function32:
+    ret
+
+section _DATA align=1 class=DATA use32
+
+global _ex_data32
+_ex_data32:
+    dd      0x89ABCDEF
+    db      'HELLO',0
+

tool/linker/ex9/common.mak

@@ -0,0 +1,84 @@
+
+# TODO: OS/2 target: What can we #define to tell the header files which OS/2
+#       environment we're doing? (Command prompt app. vs Presentation Manager app vs.
+#       "fullscreen" app.)
+
+# this makefile is included from all the dos*.mak files, do not use directly
+# NTS: HPS is either \ (DOS) or / (Linux)
+
+CFLAGS_THIS = -fr=nul -fo=$(SUBDIR)$(HPS).obj -i=.. -i..$(HPS)..$(HPS).. -zl -s
+NOW_BUILDING = TOOL_LINKER_EX1
+
+!ifneq TARGET_MSDOS 32
+! ifdef TINYMODE
+TEST_EXE =    $(SUBDIR)$(HPS)test.com
+DOSLIBLINKER_OFMT = -of com
+! else
+TEST_EXE =    $(SUBDIR)$(HPS)test.exe
+TESTW_EXE =   $(SUBDIR)$(HPS)testw.exe
+TESTF_EXE =   $(SUBDIR)$(HPS)testf.exe
+TESTFF_EXE =  $(SUBDIR)$(HPS)testff.exe
+TESTFC_EXE =  $(SUBDIR)$(HPS)testfc.com
+DOSLIBLINKER_OFMT = -of exe
+! endif
+!endif
+
+DOSLIBLINKER = ../linux-host/lnkdos16
+
+$(DOSLIBLINKER):
+	make -C ..
+
+# NTS we have to construct the command line into tmp.cmd because for MS-DOS
+# systems all arguments would exceed the pitiful 128 char command line limit
+.C.OBJ:
+	%write tmp.cmd $(CFLAGS_THIS) $(CFLAGS_CON) $[@
+	@$(CC) @tmp.cmd
+
+.ASM.OBJ:
+	nasm -o $@ -f obj $(NASMFLAGS) $[@
+
+all: $(OMFSEGDG) lib exe
+
+exe: $(DOSLIBLINKER) $(TESTW_EXE) $(TEST_EXE) $(TESTF_EXE) $(TESTFF_EXE) $(TESTFC_EXE) .symbolic
+
+lib: .symbolic
+
+!ifdef TINYMODE
+WLINK_NOCLIBS_SYSTEM = dos com
+!else
+WLINK_NOCLIBS_SYSTEM = $(WLINK_SYSTEM)
+!endif
+
+!ifdef TESTW_EXE
+$(TESTW_EXE): $(SUBDIR)$(HPS)entry.obj $(SUBDIR)$(HPS)drvc.obj $(SUBDIR)$(HPS)code32.obj
+	%write tmp.cmd option quiet OPTION NODEFAULTLIBS option map=$(TESTW_EXE).map system $(WLINK_NOCLIBS_SYSTEM) file $(SUBDIR)$(HPS)drvc.obj file $(SUBDIR)$(HPS)code32.obj file $(SUBDIR)$(HPS)entry.obj name $(TESTW_EXE)
+	@wlink @tmp.cmd
+	@$(COPY) ..$(HPS)..$(HPS)..$(HPS)dos32a.dat $(SUBDIR)$(HPS)dos4gw.exe
+!endif
+
+!ifdef TEST_EXE
+$(TEST_EXE): $(SUBDIR)$(HPS)entry.obj $(SUBDIR)$(HPS)drvc.obj $(SUBDIR)$(HPS)code32.obj
+	$(DOSLIBLINKER) -i $(SUBDIR)$(HPS)drvc.obj -i $(SUBDIR)$(HPS)code32.obj -i $(SUBDIR)$(HPS)entry.obj -o $(TEST_EXE) $(DOSLIBLINKER_OFMT) -map $(TEST_EXE).map
+!endif
+
+!ifdef TESTF_EXE
+$(TESTF_EXE): $(SUBDIR)$(HPS)entry.obj $(SUBDIR)$(HPS)drvc.obj $(SUBDIR)$(HPS)code32.obj
+	$(DOSLIBLINKER) -i $(SUBDIR)$(HPS)drvc.obj -i $(SUBDIR)$(HPS)code32.obj -i $(SUBDIR)$(HPS)entry.obj -o $(TESTF_EXE) $(DOSLIBLINKER_OFMT) -pflat -map $(TESTF_EXE).map
+!endif
+
+!ifdef TESTFF_EXE
+$(TESTFF_EXE): $(SUBDIR)$(HPS)entry2.obj $(SUBDIR)$(HPS)drvc.obj $(SUBDIR)$(HPS)code32.obj
+	$(DOSLIBLINKER) -i $(SUBDIR)$(HPS)drvc.obj -i $(SUBDIR)$(HPS)code32.obj -i $(SUBDIR)$(HPS)entry2.obj -o $(TESTFF_EXE) $(DOSLIBLINKER_OFMT) -pflat -com100 -map $(TESTFF_EXE).map
+!endif
+
+!ifdef TESTFC_EXE
+$(TESTFC_EXE): $(SUBDIR)$(HPS)entry2.obj $(SUBDIR)$(HPS)drvc.obj $(SUBDIR)$(HPS)code32.obj
+	$(DOSLIBLINKER) -i $(SUBDIR)$(HPS)drvc.obj -i $(SUBDIR)$(HPS)code32.obj -i $(SUBDIR)$(HPS)entry2.obj -o $(TESTFC_EXE) -of comrel -pflat -map $(TESTFC_EXE).map
+!endif
+
+clean: .SYMBOLIC
+          del $(SUBDIR)$(HPS)*.obj
+          del $(HW_DOS_LIB)
+          del tmp.cmd
+          @echo Cleaning done
+

tool/linker/ex9/drvc.c

@@ -0,0 +1,42 @@
+
+extern const char hellostr2[];
+
+const char hello_world[] = "Hello world. This is code without a C runtime.\r\n";
+const char crlf[] = "\r\n";
+
+void dos_putc(const char c);
+#pragma aux dos_putc = \
+    "mov    ah,0x02" \
+    "int    21h" \
+    modify [ah] \
+    parm [dl]
+
+void dos_puts(const char *p) {
+    char c;
+
+    while ((c = *p++) != 0)
+        dos_putc(c);
+}
+
+extern unsigned long ex_data32;
+
+unsigned int near entry_c(void) {
+    dos_puts(hello_world);
+    dos_puts(hellostr2);
+
+    /* in code32.asm there is 32-bit code and data.
+     * test that we can access it relative to our 16-bit segment.
+     * the 32-bit code/data is linked together as if part of our 16-bit code and data.
+     * NTS: Open Watcom's Linker WILL NOT link this test properly, this test will fail. */
+    if (ex_data32 == 0x89ABCDEF) {
+        dos_puts("EX_DATA32 YES\nEX_DATA32 string: ");
+        dos_puts((const char *)(&ex_data32) + 4ul);
+        dos_puts(crlf);
+    }
+    else {
+        dos_puts("EX_DATA32 NO");
+    }
+
+    return 0;
+}
+

tool/linker/ex9/entry.asm

@@ -0,0 +1,121 @@
+; auto-generated code, do not edit
+%ifidni segment_use,use32
+bits 32          ; 32-bit real mode
+%else
+bits 16          ; 16-bit real mode
+%endif
+
+; code
+%ifidni segment_use,use32
+section _TEXT align=1 class=CODE use32
+%else
+ %ifidni segment_use,use16
+segment _TEXT align=1 class=CODE use16
+ %else
+  %error unknown or undefined segment_use
+ %endif
+%endif
+
+..start:
+global asm_entry
+asm_entry:
+
+extern entry_c_
+
+%ifndef TINYMODE
+    mov     ax,_DATA
+    mov     ds,ax
+%else
+    ; the DOSLIB linker can properly link .com executables
+%endif
+
+; unsigned int near entry_c(void)
+    call    entry_c_
+
+global _exit_
+_exit_:
+    mov     ah,4Ch
+    int     21h
+
+; comrel.
+; recent versions of the linker allow us to re-define the location of the COMREL fixup code
+%ifidni segment_use,use32
+section __COMREL_RELOC align=4 class=CODE use32
+%else
+ %ifidni segment_use,use16
+segment __COMREL_RELOC align=4 class=CODE use16
+ %else
+  %error unknown or undefined segment_use
+ %endif
+%endif
+
+; the linker SHOULD append it's COMREL table + code after any data we insert here
+global dummy_junk
+dummy_junk:
+    dw  0x1234
+    db  'The linker should put COMREL code right after this string.',0
+
+; comrel.
+; recent versions of the linker allow us to re-define the location of the COMREL fixup code
+%ifidni segment_use,use32
+section __COMREL_RELOCTBL align=4 class=CODE use32
+%else
+ %ifidni segment_use,use16
+segment __COMREL_RELOCTBL align=4 class=CODE use16
+ %else
+  %error unknown or undefined segment_use
+ %endif
+%endif
+
+; the linker SHOULD append it's COMREL table + code after any data we insert here
+global dummy_junk2
+dummy_junk2:
+    dw  0xABCD
+    db  'The linker should put COMREL table right after this string.',0
+
+; data
+%ifidni segment_use,use32
+section _DATA align=1 class=DATA use32
+%else
+ %ifidni segment_use,use16
+segment _DATA align=1 class=DATA use16
+ %else
+  %error unknown or undefined segment_use
+ %endif
+%endif
+
+global _hellostr2
+_hellostr2:
+    db      'Hello world from ASM',13,10,0
+
+; stack
+%ifidni segment_use,use32
+section _STACK align=4 class=STACK use32
+%else
+ %ifidni segment_use,use16
+segment _STACK align=4 class=STACK use16
+ %else
+  %error unknown or undefined segment_use
+ %endif
+%endif
+
+; stack
+%ifidni segment_use,use32
+section _BSS align=4 class=BSS use32
+%else
+ %ifidni segment_use,use16
+segment _BSS align=4 class=BSS use16
+ %else
+  %error unknown or undefined segment_use
+ %endif
+%endif
+
+%ifdef TINYMODE
+group DGROUP _DATA _TEXT _STACK __COMREL_RELOC
+%else
+ %if TARGET_MSDOS == 32
+group DGROUP _DATA _STACK
+ %else
+group DGROUP _DATA __COMREL_RELOC
+ %endif
+%endif

tool/linker/ex9/entry2.asm

@@ -0,0 +1,5 @@
+
+%define TINYMODE
+
+%include "entry.asm"
+

tool/linker/ex9/make.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/bash
+rel=../../..
+if [ x"$TOP" == x ]; then TOP=`pwd`/$rel; fi
+. $rel/linux-ow.sh
+
+dos=1 # MS-DOS
+dostiny=1 # MS-DOS tiny model
+#doshuge=1 # MS-DOS huge model
+#dospc98=1 # MS-DOS PC-98
+#win30=1 # Windows 3.0
+#win31=1 # Windows 3.1
+#winnt=1 # Windows NT
+#win32=1 # Windows 9x/NT/XP/Vista/etc.
+#win32s=1 # Windows 3.1 + Win32s
+#os216=1 # OS/2 16-bit 286
+#os232=1 # OS/2 32-bit 386
+#win386=1
+#win38631=1
+
+if [ "$1" == "clean" ]; then
+    do_clean
+    rm -Rf linux-host
+    exit 0
+fi
+
+if [[ "$1" == "build" || "$1" == "" ]]; then
+    make_buildlist
+    begin_bat
+
+    what=all
+    if [ x"$2" != x ]; then what="$2"; fi
+    if [ x"$3" != x ]; then build_list="$3"; fi
+
+    for name in $build_list; do
+        do_wmake $name "$what" || exit 1
+        bat_wmake $name "$what" || exit 1
+    done
+
+    end_bat
+fi
+