scc

commit 52cf2e9986d52e8e812a30b94dc118dabb1aea1f
parent ece7fade7d459523af266428e95b4f587a2f0ba9
Author: Roberto E. Vargas Caballero <k0ga@shike2.net>
Date:   Mon,  5 Jan 2026 22:22:18 +0100

libmach: Add findseg()

This function returns the segment index in the map.  This function is
mainly designed to be used in elf where there is a difference between
sections and segments.

Diffstat:
M
include/scc/bits/scc/mach.h
 | 
1
+
M
src/libmach/Makefile
 | 
1
+
A
src/libmach/findseg.c
 | 
21
+++++++++++++++++++++

3 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/include/scc/bits/scc/mach.h b/include/scc/bits/scc/mach.h
@@ -162,6 +162,7 @@ int pc2line(Obj *, unsigned long long, char *, int *);
 int rebase(Obj *, int, unsigned long long);
 
 int findsec(Map *, char *);
+int findseg(Map *, unsigned long long);
 
 Symbol *getsym(Obj *, int *, Symbol *);
 Symbol *setsym(Obj *, int *, Symbol *);
diff --git a/src/libmach/Makefile b/src/libmach/Makefile
@@ -16,6 +16,7 @@ OBJS =\
 	delmap.o\
 	delobj.o\
 	findsec.o\
+	findseg.o\
 	getindex.o\
 	getsec.o\
 	getsym.o\
diff --git a/src/libmach/findseg.c b/src/libmach/findseg.c
@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include <string.h>
+
+#include <scc/mach.h>
+
+#include "libmach.h"
+
+int
+findseg(Map *map, unsigned long long addr)
+{
+	int i;
+	Mapsec *seg;
+
+	for (i = 0; i < map->nseg; ++i) {
+		seg = &map->seg[i];
+		if (seg->used && seg->sec.base == addr)
+			return i;
+	}
+
+	return -1;
+}