linker: Do not store entire ELF in memory when writing to a file.

This reduces the amount of memory that needs to be allocated while
writing the ELF file to disk.

Note: We're abusing #:page-aligned? in 'link-elf' to choose whether to
return a bytevector or a procedure.

* module/system/vm/linker.scm (process-reloc): Subtract SECTION-OFFSET
when writing to BV.
(write-linker-object): Pass BV directly to the linker object writer.
(link-elf): When PAGE-ALIGNED? is false, call 'bytevector-slice' from
here.  When it is true, return a procedure that takes a port and writes
to it, without having to allocate a bytevector for the whole ELF
container.
* module/language/bytecode/spec.scm (bytecode->value): Handle X being a
procedure instead of a bytevector.
(bytecode) <#:printer>: Likewise.
* test-suite/tests/linker.test (link-elf-with-one-main-section): Pass
 #:page-aligned? #f.

0 files changed, 0 insertions, 0 deletions