Give extracted linker sections pretty names
Replace .linker.sect0, etc. with .linker, .linker.text, .linker.data
and .linker.data.rel.ro by extracting the name of the first section
in each program header.
Test: build and run host bionic binary
Change-Id: I25107547536a3a3963fdeb311c45a7ee53c0bc45
diff --git a/cmd/extract_linker/main.go b/cmd/extract_linker/main.go
index ea0bf4e..d62dea1 100644
--- a/cmd/extract_linker/main.go
+++ b/cmd/extract_linker/main.go
@@ -61,8 +61,15 @@
continue
}
- sectionName := fmt.Sprintf(".linker.sect%d", load)
- symName := fmt.Sprintf("__dlwrap_linker_sect%d", load)
+ var progName string
+ progSection := progToFirstSection(prog, ef.Sections)
+ if progSection != nil {
+ progName = progSection.Name
+ } else {
+ progName = fmt.Sprintf(".sect%d", load)
+ }
+ sectionName := ".linker" + progName
+ symName := "__dlwrap_linker" + strings.ReplaceAll(progName, ".", "_")
flags := ""
if prog.Flags&elf.PF_W != 0 {
@@ -125,3 +132,12 @@
}
fmt.Fprintln(asm)
}
+
+func progToFirstSection(prog *elf.Prog, sections []*elf.Section) *elf.Section {
+ for _, section := range sections {
+ if section.Addr == prog.Vaddr {
+ return section
+ }
+ }
+ return nil
+}
