Changing Mapfiles with -k filename and +nodefaultmap

The +nodefaultmap option used with -k option prevents the linker from concatenating the default memory map to the map provided by filename. If you specify +nodefaultmap, the linker does not append the default mapfile to your mapfile. If you do not specify +nodefaultmap with -k, the linker appends the default to the output file.

Mapfile Example: Using -k mapfile and +nodefaultmap

cat mapfile

text = LOAD ?RX V0x1000;
text : .rodata;
text : .PARISC.milli;
text : .dynamic;
text : .dynsym;
text : .dynstr;
text : .hash;
text : $PROGBITS ?AX;
text : .PARISC.unwind;
text : $UNWIND;
data = LOAD ?RW V0x4000000040001000;
data : .opd;
data : .plt;
data : .dlt;
data : .data;
data : $PROGBITS ?AW!S;
data : .sdata;
data : $PROGBITS ?AWS;
data : .sbss;
data : $NOBITS ?AWS;
data : .bss;
data : $NOBITS ?AW!S;
note = NOTE;
note : $NOTE;

ld main.o +nomapfile -k mapfile -lc

elfdump -h -S a.out

a.out:

	*** Section Header ***Index 	Type	Vaddr	Offset	Size	Name
1	DYNM	00000000000011c8	00000000000001c8	00000120	.dynamic
2	DYNS	00000000000012e8	00000000000002e8	00000270	.dynsym
3	STRT	0000000000001558	0000000000000558	00000113	.dynstr
4	HASH	0000000000001670	0000000000000670	000000a4	.hash
5	PBIT	0000000000001718	0000000000000718	00000044	.text
6	PBIT	000000000000175c	000000000000075c	00000018	.interp
7	RELA	0000000000001778	0000000000000778	00000000	.rela.HP.init
8	RELA	0000000000001778	0000000000000778	00000000	.rela.init
9	RELA	0000000000001778	0000000000000778	00000000	.rela.fini
10	RELA	0000000000001778	0000000000000778	00000000	.rela.opd
11	RELA	0000000000001778	0000000000000778	00000018	.rela.plt
12	RELA	0000000000001790	0000000000000790	00000000	.rela.dlt
13	UNWI	0000000000001790	0000000000000790	00000010	.PARISC.unwind
14	PBIT	4000000040001000	0000000000001000	00000020	.opd
15	PBIT	4000000040001020	0000000000001020	00000010	.plt
16	PBIT	4000000040001030	0000000000001030	00000000	.dlt
17	PBIT	4000000040001030	0000000000001030	00000000	.data
18	PBIT	4000000040001030	0000000000001030	00000000	.HP.init
19	PBIT	4000000040001030	0000000000001030	00000000	.preinit
20	PBIT	4000000040001030	0000000000001030	00000000	.init
21	PBIT	4000000040001030	0000000000001030	00000000	.fini
22	PBIT	4000000040001030	0000000000001030	00000008	.sdata
23	NOBI	4000000040001038	0000000000001038	00000008	.bss
24	NOBI	0000000000000000	0000000000001038	00000000	.tbss
25	STRT	0000000000000000	0000000000001038	000001b2	.strtab
26	SYMT	0000000000000000	00000000000011ec	000004b0	.symtab
27	STRT	0000000000000000	000000000000169c	000000de	.shstrtab

Changing Mapfiles with -k filename and +nodefaultmap

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Mapfile Example: Using -k mapfile and +nodefaultmap