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ld: allow linking to a different offset

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This commit is contained in:
Paul Mathieu 2021-04-17 23:05:02 -07:00
parent 2ab6b4a5a9
commit 0e6a311610
1 changed files with 5 additions and 3 deletions
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8
tools/ld.py
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@ -21,10 +21,10 @@ def parse_objs(objs):
return sections, relocs return sections, relocs
def map_sections(sections): def map_sections(sections, offset=0):
secmap = [] secmap = []
addr = 0 addr = offset
# _start goes first # _start goes first
for sec in sections: for sec in sections:
@ -76,6 +76,8 @@ def parse_args():
parser.add_argument('--output', '-o', type=argparse.FileType('wb'), parser.add_argument('--output', '-o', type=argparse.FileType('wb'),
default=sys.stdout.buffer, help='output file') default=sys.stdout.buffer, help='output file')
parser.add_argument('--vhdl', help='vhdl output with given template') parser.add_argument('--vhdl', help='vhdl output with given template')
parser.add_argument('--offset', default=0, type=int,
help='memory offset to link from')
return parser.parse_args() return parser.parse_args()
@ -85,7 +87,7 @@ def main():
with open(CRT0_FILE, 'rb') as crt0: with open(CRT0_FILE, 'rb') as crt0:
sections, relocs = parse_objs(args.objfiles + [crt0]) sections, relocs = parse_objs(args.objfiles + [crt0])
sectionmap = map_sections(sections) sectionmap = map_sections(sections, offset=args.offset)
do_relocs(sectionmap, relocs) do_relocs(sectionmap, relocs)
text = dump(sectionmap) text = dump(sectionmap)