libmach/elf: Add loadmap() - scc - simple c99 compiler
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---
(DIR) commit e2e71bfb86d012abec03e47f20aaae56e0b84bd3
(DIR) parent f485fa123db6f14395f034c90705edde591e759a
(HTM) Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date: Tue, 28 Jan 2025 14:50:25 +0100
libmach/elf: Add loadmap()
Diffstat:
M src/libmach/elf/Makefile | 1 +
A src/libmach/elf/elfloadmap.c | 42 +++++++++++++++++++++++++++++++
M src/libmach/loadmap.c | 1 +
3 files changed, 44 insertions(+), 0 deletions(-)
---
(DIR) diff --git a/src/libmach/elf/Makefile b/src/libmach/elf/Makefile
@@ -8,6 +8,7 @@ OBJS =\
elfdel.o\
elfgetsec.o\
elfgetsym.o\
+ elfloadmap.o\
elfnew.o\
elfprobe.o\
elfread.o\
(DIR) diff --git a/src/libmach/elf/elfloadmap.c b/src/libmach/elf/elfloadmap.c
@@ -0,0 +1,42 @@
+#include <stdio.h>
+
+#include <scc/mach.h>
+#include <scc/elf.h>
+
+#include "../libmach.h"
+#include "fun.h"
+
+Map *
+elfloadmap(Obj *obj, FILE *fp)
+{
+ long i;
+ Map *map;
+ char *name;
+ long nsec;
+ FILE *src;
+ Elfsec *shdr;
+ Elf *elf = obj->data;
+ Elfhdr *hdr = &elf->hdr;
+
+ nsec = hdr->shnum;
+ if ((map = newmap(NULL, nsec)) == NULL)
+ return NULL;
+
+ for (shdr = elf->secs; nsec--; ++shdr) {
+ unsigned long o;
+ unsigned long long b = shdr->addralign;
+ unsigned long long e = b + shdr->size;
+
+ if (shdr->offset != 0) {
+ o = obj->pos + shdr->offset;
+ src = fp;
+ } else {
+ o = 0;
+ src = NULL;
+ }
+
+ setmap(map, name, src, b, e, o);
+ }
+
+ return map;
+}
(DIR) diff --git a/src/libmach/loadmap.c b/src/libmach/loadmap.c
@@ -9,6 +9,7 @@
static Map *(*ops[NFORMATS])(Obj *, FILE *) = {
[COFF32] = coff32loadmap,
+ [ELF] = elfloadmap,
};
Map *