summaryrefslogtreecommitdiff
path: root/base/loader/elf_object.cc
diff options
context:
space:
mode:
Diffstat (limited to 'base/loader/elf_object.cc')
-rw-r--r--base/loader/elf_object.cc48
1 files changed, 16 insertions, 32 deletions
diff --git a/base/loader/elf_object.cc b/base/loader/elf_object.cc
index 791c6f6de..58029bc3e 100644
--- a/base/loader/elf_object.cc
+++ b/base/loader/elf_object.cc
@@ -42,12 +42,14 @@
#include "libelf/gelf.h"
#include "base/loader/elf_object.hh"
+#include "base/misc.hh"
-#include "mem/functional/functional.hh"
#include "base/loader/symtab.hh"
#include "base/trace.hh" // for DPRINTF
+#include "sim/byteswap.hh"
+
using namespace std;
@@ -73,8 +75,7 @@ ElfObject::tryFile(const string &fname, int fd, size_t len, uint8_t *data)
DPRINTFR(Loader, "Not ELF\n");
elf_end(elf);
return NULL;
- }
- else {
+ } else {
//Detect the architecture
//Versioning issues in libelf need to be resolved to get the correct
//SPARC constants.
@@ -90,7 +91,7 @@ ElfObject::tryFile(const string &fname, int fd, size_t len, uint8_t *data)
arch = ObjectFile::SPARC;
} else if (ehdr.e_machine == EM_MIPS
&& ehdr.e_ident[EI_CLASS] == ELFCLASS32) {
- arch = ObjectFile::MIPS;
+ arch = ObjectFile::Mips;
} else if (ehdr.e_ident[EI_CLASS] == ELFCLASS64) {
arch = ObjectFile::Alpha;
} else {
@@ -154,6 +155,7 @@ ElfObject::tryFile(const string &fname, int fd, size_t len, uint8_t *data)
section = elf_getscn(elf, ++secIdx);
} // while sections
}
+
elf_end(elf);
return new ElfObject(fname, fd, len, data, arch, opSys);
}
@@ -185,6 +187,7 @@ ElfObject::ElfObject(const string &_filename, int _fd,
entry = ehdr.e_entry;
+
// initialize segment sizes to 0 in case they're not present
text.size = data.size = bss.size = 0;
@@ -203,20 +206,18 @@ ElfObject::ElfObject(const string &_filename, int _fd,
if (text.size == 0) { // haven't seen text segment yet
text.baseAddr = phdr.p_vaddr;
text.size = phdr.p_filesz;
- // remember where the data is for loadSections()
- fileTextBits = fileData + phdr.p_offset;
+ text.fileImage = fileData + phdr.p_offset;
// if there's any padding at the end that's not in the
// file, call it the bss. This happens in the "text"
// segment if there's only one loadable segment (as for
// kernel images).
bss.size = phdr.p_memsz - phdr.p_filesz;
bss.baseAddr = phdr.p_vaddr + phdr.p_filesz;
- }
- else if (data.size == 0) { // have text, this must be data
+ bss.fileImage = NULL;
+ } else if (data.size == 0) { // have text, this must be data
data.baseAddr = phdr.p_vaddr;
data.size = phdr.p_filesz;
- // remember where the data is for loadSections()
- fileDataBits = fileData + phdr.p_offset;
+ data.fileImage = fileData + phdr.p_offset;
// if there's any padding at the end that's not in the
// file, call it the bss. Warn if this happens for both
// the text & data segments (should only have one bss).
@@ -225,6 +226,11 @@ ElfObject::ElfObject(const string &_filename, int _fd,
}
bss.size = phdr.p_memsz - phdr.p_filesz;
bss.baseAddr = phdr.p_vaddr + phdr.p_filesz;
+ bss.fileImage = NULL;
+ } else {
+ warn("More than two loadable segments in ELF object.");
+ warn("Ignoring segment @ 0x%x length 0x%x.",
+ phdr.p_vaddr, phdr.p_filesz);
}
}
@@ -242,28 +248,6 @@ ElfObject::ElfObject(const string &_filename, int _fd,
bool
-ElfObject::loadSections(FunctionalMemory *mem, bool loadPhys)
-{
- Addr textAddr = text.baseAddr;
- Addr dataAddr = data.baseAddr;
-
- if (loadPhys) {
- textAddr &= (ULL(1) << 40) - 1;
- dataAddr &= (ULL(1) << 40) - 1;
- }
-
- // Since we don't really have an MMU and all memory is
- // zero-filled, there's no need to set up the BSS segment.
- if (text.size != 0)
- mem->prot_write(textAddr, fileTextBits, text.size);
- if (data.size != 0)
- mem->prot_write(dataAddr, fileDataBits, data.size);
-
- return true;
-}
-
-
-bool
ElfObject::loadSomeSymbols(SymbolTable *symtab, int binding)
{
Elf *elf;