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[Mach-O] wip

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This commit is contained in:
Rui Ueyama 2021-10-04 18:57:26 +09:00
parent 74244c3c9c
commit 4932daadba
4 changed files with 23 additions and 4 deletions
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5
macho/mold.h
View File

@ -59,6 +59,10 @@ public:
class Subsection {
public:
std::string_view get_contents() {
return sec.contents.substr(input_offset, input_size);
}
const InputSection &sec;
u32 input_offset = 0;
u32 input_size = 0;
@ -140,6 +144,7 @@ class OutputSection : public Chunk {
public:
OutputSection(std::string_view name);
void compute_size(Context &ctx) override;
void copy_buf(Context &ctx) override;
std::vector<Subsection *> members;
};

12
macho/output-chunks.cc
View File

@ -236,12 +236,22 @@ OutputSection::OutputSection(std::string_view name) {
}
void OutputSection::compute_size(Context &ctx) {
SyncOut(ctx) << "members: " << members.size();
hdr.size = 0;
for (Subsection *subsec : members)
hdr.size += subsec->input_size;
}
void OutputSection::copy_buf(Context &ctx) {
u8 *buf = ctx.buf + hdr.offset;
i64 offset = 0;
for (Subsection *subsec : members) {
std::string_view data = subsec->get_contents();
memcpy(buf + offset, data.data(), data.size());
offset += data.size();
}
}
OutputSegment::OutputSegment(std::string_view name, u32 prot, u32 flags) {
assert(name.size() <= sizeof(cmd.segname));

2
test/macho/dump.sh
View File

@ -3,7 +3,7 @@ set -e
cd $(dirname $0)
mold=`pwd`/../../ld64.mold
echo -n "Testing $(basename -s .sh $0) ... "
t=$(pwd)/../../out/test/elf/$(basename -s .sh $0)
t=$(pwd)/../../out/test/macho/$(basename -s .sh $0)
mkdir -p $t
$mold -o $t/exe

8
test/macho/hello.sh
View File

@ -3,14 +3,18 @@ set -e
cd $(dirname $0)
mold=`pwd`/../../ld64.mold
echo -n "Testing $(basename -s .sh $0) ... "
t=$(pwd)/../../out/test/elf/$(basename -s .sh $0)
t=$(pwd)/../../out/test/macho/$(basename -s .sh $0)
mkdir -p $t
cat <<EOF | cc -o $t/a.o -c -xc -
#include <stdio.h>
int main() {
void hello() {
printf("Hello world\n");
}
int main() {
hello();
}
EOF
$mold -o $t/hello $t/a.o