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Reapply: "objdump: Support newer ObjC image info flags"

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Summary:
Add support for two additional ObjC image info flags: `IS_SIMULATED` and
`HAS_CATEGORY_CLASS_PROPERTIES`.

`IS_SIMULATED` indicates a Mach-O binary built for iOS simulator.

`HAS_CATEGORY_CLASS_PROPERTIES` indicates a Mach-O binary built by a compiler
that supports class properties in categories.

Reviewers: enderby, compnerd

Reviewed By: compnerd

Subscribers: keith, llvm-commits

Differential Revision: https://reviews.llvm.org/D48568

llvm-svn: 336411
This commit is contained in:
Dave Lee 2018-07-06 05:11:35 +00:00
parent 04093c3826
commit 67c9c1fb9d
2 changed files with 13 additions and 0 deletions
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7
test/tools/llvm-objdump/X86/macho-image-info.test Normal file
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@ -0,0 +1,7 @@
# RUN: llvm-mc < %s -triple x86_64-darwin -filetype=obj | llvm-objdump -m -objc-meta-data - | FileCheck %s
.section __DATA,__objc_imageinfo,regular,no_dead_strip
.long 0
.long 96
# CHECK: OBJC_IMAGE_IS_SIMULATED OBJC_IMAGE_HAS_CATEGORY_CLASS_PROPERTIES

6
tools/llvm-objdump/MachODump.cpp
View File

@ -3229,6 +3229,8 @@ struct imageInfo_t {
/* masks for objc_image_info.flags */
#define OBJC_IMAGE_IS_REPLACEMENT (1 << 0)
#define OBJC_IMAGE_SUPPORTS_GC (1 << 1)
#define OBJC_IMAGE_IS_SIMULATED (1 << 5)
#define OBJC_IMAGE_HAS_CATEGORY_CLASS_PROPERTIES (1 << 6)
struct message_ref64 {
uint64_t imp; /* IMP (64-bit pointer) */
@ -5590,6 +5592,10 @@ static void print_image_info64(SectionRef S, struct DisassembleInfo *info) {
outs() << " OBJC_IMAGE_IS_REPLACEMENT";
if (o.flags & OBJC_IMAGE_SUPPORTS_GC)
outs() << " OBJC_IMAGE_SUPPORTS_GC";
if (o.flags & OBJC_IMAGE_IS_SIMULATED)
outs() << " OBJC_IMAGE_IS_SIMULATED";
if (o.flags & OBJC_IMAGE_HAS_CATEGORY_CLASS_PROPERTIES)
outs() << " OBJC_IMAGE_HAS_CATEGORY_CLASS_PROPERTIES";
swift_version = (o.flags >> 8) & 0xff;
if (swift_version != 0) {
if (swift_version == 1)