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12.0.0 Release

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Related: rhbz#1931719
This commit is contained in:
Tom Stellard 2021-05-05 11:21:53 -07:00
parent 26f2675de1
commit 9afb337884
8 changed files with 566 additions and 8063 deletions
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12
.gitignore vendored
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@ -59,3 +59,15 @@
/lld-11.1.0rc1.src.tar.xz.sig /lld-11.1.0rc1.src.tar.xz.sig
/lld-11.1.0rc2.src.tar.xz /lld-11.1.0rc2.src.tar.xz
/lld-11.1.0rc2.src.tar.xz.sig /lld-11.1.0rc2.src.tar.xz.sig
/lld-12.0.0rc1.src.tar.xz
/lld-12.0.0rc1.src.tar.xz.sig
/lld-12.0.0rc2.src.tar.xz
/lld-12.0.0rc2.src.tar.xz.sig
/lld-12.0.0rc3.src.tar.xz
/lld-12.0.0rc3.src.tar.xz.sig
/lld-12.0.0rc4.src.tar.xz
/lld-12.0.0rc4.src.tar.xz.sig
/lld-12.0.0rc5.src.tar.xz
/lld-12.0.0rc5.src.tar.xz.sig
/lld-12.0.0.src.tar.xz
/lld-12.0.0.src.tar.xz.sig

48
0001-ELF-Only-unlink-regular-files.patch
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@ -1,48 +0,0 @@
From d146e98b7f94940386f60a902031b2a9b6237730 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar@redhat.com>
Date: Tue, 4 Jul 2017 16:03:34 +0000
Subject: [PATCH] ELF: Only unlink regular files
Summary:
If the output file is a character file (e.g. /dev/null) unlinking it could
potentially destabilize the user's system. For example,
unlinking causes `lld %input -o /dev/null` to replace /dev/null with a
regular file, which will lead to unexpected behavior in other programs
that read from /dev/null, and worse than expected peformance for
programs that write to /dev/null.
This makes it possible to run the test-release.sh script as root.
Prior to this patch, the ELF/basic.s test would replace
/dev/null with a regular file, which would cause crashes in llvm
test-suite programs that piped /dev/null to stdin.
For example, if you run the test-relase.sh script as root,
Reviewers: ruiu
Reviewed By: ruiu
Subscribers: emaste, llvm-commits
Differential Revision: https://reviews.llvm.org/D34917
---
ELF/Writer.cpp | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/ELF/Writer.cpp b/ELF/Writer.cpp
index b004a4f..d52165b 100644
--- a/ELF/Writer.cpp
+++ b/ELF/Writer.cpp
@@ -1650,7 +1650,8 @@ template <class ELFT> void Writer<ELFT>::writeHeader() {
// This function spawns a background thread to call unlink.
// The calling thread returns almost immediately.
static void unlinkAsync(StringRef Path) {
- if (!Config->Threads || !sys::fs::exists(Config->OutputFile))
+ if (!Config->Threads || !sys::fs::exists(Config->OutputFile) ||
+ !sys::fs::is_regular_file(Config->OutputFile))
return;
// First, rename Path to avoid race condition. We cannot remove
--
1.8.3.1

19
0001-CMake-Check-for-gtest-headers-even-if-lit.py-is-not-.patch → 0001-PATCH-lld-CMake-Check-for-gtest-headers-even-if-lit..patch
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@ -1,19 +1,20 @@
From e5bdf4580677da063abe8d3880fbab9eaa7a7efe Mon Sep 17 00:00:00 2001 From 760568cd24acd6ae9083b0dfea2c7c0ea6f0adc2 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar@redhat.com> From: Tom Stellard <tstellar@redhat.com>
Date: Thu, 30 Aug 2018 08:53:56 -0700 Date: Thu, 30 Aug 2018 08:53:56 -0700
Subject: [PATCH] CMake: Check for gtest headers even if lit.py is not present Subject: [PATCH 1/2] [PATCH][lld] CMake: Check for gtest headers even if
lit.py is not present
This makes it possible to build the unittests even withotu a full This makes it possible to build the unittests even withotu a full
checkout of the llvm source tree. checkout of the llvm source tree.
--- ---
CMakeLists.txt | 15 +++++++++------ lld/CMakeLists.txt | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-) 1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/CMakeLists.txt b/CMakeLists.txt diff --git a/lld/CMakeLists.txt b/lld/CMakeLists.txt
index e2fbdbf..c9b2927 100644 index d4e561b..a7406d1c 100644
--- a/CMakeLists.txt --- a/lld/CMakeLists.txt
+++ b/CMakeLists.txt +++ b/lld/CMakeLists.txt
@@ -75,6 +75,15 @@ Please install Python or specify the PYTHON_EXECUTABLE CMake variable.") @@ -65,6 +65,15 @@ if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
set(LLVM_UTILS_PROVIDED ON) set(LLVM_UTILS_PROVIDED ON)
endif() endif()
@ -29,7 +30,7 @@ index e2fbdbf..c9b2927 100644
if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py) if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
# Note: path not really used, except for checking if lit was found # Note: path not really used, except for checking if lit was found
set(LLVM_LIT ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py) set(LLVM_LIT ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
@@ -84,12 +93,6 @@ Please install Python or specify the PYTHON_EXECUTABLE CMake variable.") @@ -74,12 +83,6 @@ if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
set(LLVM_UTILS_PROVIDED ON) set(LLVM_UTILS_PROVIDED ON)
set(LLD_TEST_DEPS FileCheck not) set(LLD_TEST_DEPS FileCheck not)
endif() endif()

0
0001-PATCH-llvm-config.patch
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7986
0001-Revert-lld-Initial-commit-for-new-Mach-O-backend.patch
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File diff suppressed because it is too large Load Diff

498
0002-PATCH-lld-Import-compact_unwind_encoding.h-from-libu.patch Normal file
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@ -0,0 +1,498 @@
From 43dfe54ce017c8d37eaec480a2f13a492bbc4203 Mon Sep 17 00:00:00 2001
From: serge-sans-paille <sguelton@redhat.com>
Date: Thu, 25 Feb 2021 14:24:14 +0100
Subject: [PATCH 2/2] [PATCH][lld] Import compact_unwind_encoding.h from
libunwind
This avoids an implicit cross package dependency
---
lld/include/mach-o/compact_unwind_encoding.h | 477 +++++++++++++++++++++++++++
1 file changed, 477 insertions(+)
create mode 100644 lld/include/mach-o/compact_unwind_encoding.h
diff --git a/lld/include/mach-o/compact_unwind_encoding.h b/lld/include/mach-o/compact_unwind_encoding.h
new file mode 100644
index 0000000..5301b10
--- /dev/null
+++ b/lld/include/mach-o/compact_unwind_encoding.h
@@ -0,0 +1,477 @@
+//===------------------ mach-o/compact_unwind_encoding.h ------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+// Darwin's alternative to DWARF based unwind encodings.
+//
+//===----------------------------------------------------------------------===//
+
+
+#ifndef __COMPACT_UNWIND_ENCODING__
+#define __COMPACT_UNWIND_ENCODING__
+
+#include <stdint.h>
+
+//
+// Compilers can emit standard DWARF FDEs in the __TEXT,__eh_frame section
+// of object files. Or compilers can emit compact unwind information in
+// the __LD,__compact_unwind section.
+//
+// When the linker creates a final linked image, it will create a
+// __TEXT,__unwind_info section. This section is a small and fast way for the
+// runtime to access unwind info for any given function. If the compiler
+// emitted compact unwind info for the function, that compact unwind info will
+// be encoded in the __TEXT,__unwind_info section. If the compiler emitted
+// DWARF unwind info, the __TEXT,__unwind_info section will contain the offset
+// of the FDE in the __TEXT,__eh_frame section in the final linked image.
+//
+// Note: Previously, the linker would transform some DWARF unwind infos into
+// compact unwind info. But that is fragile and no longer done.
+
+
+//
+// The compact unwind endoding is a 32-bit value which encoded in an
+// architecture specific way, which registers to restore from where, and how
+// to unwind out of the function.
+//
+typedef uint32_t compact_unwind_encoding_t;
+
+
+// architecture independent bits
+enum {
+ UNWIND_IS_NOT_FUNCTION_START = 0x80000000,
+ UNWIND_HAS_LSDA = 0x40000000,
+ UNWIND_PERSONALITY_MASK = 0x30000000,
+};
+
+
+
+
+//
+// x86
+//
+// 1-bit: start
+// 1-bit: has lsda
+// 2-bit: personality index
+//
+// 4-bits: 0=old, 1=ebp based, 2=stack-imm, 3=stack-ind, 4=DWARF
+// ebp based:
+// 15-bits (5*3-bits per reg) register permutation
+// 8-bits for stack offset
+// frameless:
+// 8-bits stack size
+// 3-bits stack adjust
+// 3-bits register count
+// 10-bits register permutation
+//
+enum {
+ UNWIND_X86_MODE_MASK = 0x0F000000,
+ UNWIND_X86_MODE_EBP_FRAME = 0x01000000,
+ UNWIND_X86_MODE_STACK_IMMD = 0x02000000,
+ UNWIND_X86_MODE_STACK_IND = 0x03000000,
+ UNWIND_X86_MODE_DWARF = 0x04000000,
+
+ UNWIND_X86_EBP_FRAME_REGISTERS = 0x00007FFF,
+ UNWIND_X86_EBP_FRAME_OFFSET = 0x00FF0000,
+
+ UNWIND_X86_FRAMELESS_STACK_SIZE = 0x00FF0000,
+ UNWIND_X86_FRAMELESS_STACK_ADJUST = 0x0000E000,
+ UNWIND_X86_FRAMELESS_STACK_REG_COUNT = 0x00001C00,
+ UNWIND_X86_FRAMELESS_STACK_REG_PERMUTATION = 0x000003FF,
+
+ UNWIND_X86_DWARF_SECTION_OFFSET = 0x00FFFFFF,
+};
+
+enum {
+ UNWIND_X86_REG_NONE = 0,
+ UNWIND_X86_REG_EBX = 1,
+ UNWIND_X86_REG_ECX = 2,
+ UNWIND_X86_REG_EDX = 3,
+ UNWIND_X86_REG_EDI = 4,
+ UNWIND_X86_REG_ESI = 5,
+ UNWIND_X86_REG_EBP = 6,
+};
+
+//
+// For x86 there are four modes for the compact unwind encoding:
+// UNWIND_X86_MODE_EBP_FRAME:
+// EBP based frame where EBP is push on stack immediately after return address,
+// then ESP is moved to EBP. Thus, to unwind ESP is restored with the current
+// EPB value, then EBP is restored by popping off the stack, and the return
+// is done by popping the stack once more into the pc.
+// All non-volatile registers that need to be restored must have been saved
+// in a small range in the stack that starts EBP-4 to EBP-1020. The offset/4
+// is encoded in the UNWIND_X86_EBP_FRAME_OFFSET bits. The registers saved
+// are encoded in the UNWIND_X86_EBP_FRAME_REGISTERS bits as five 3-bit entries.
+// Each entry contains which register to restore.
+// UNWIND_X86_MODE_STACK_IMMD:
+// A "frameless" (EBP not used as frame pointer) function with a small
+// constant stack size. To return, a constant (encoded in the compact
+// unwind encoding) is added to the ESP. Then the return is done by
+// popping the stack into the pc.
+// All non-volatile registers that need to be restored must have been saved
+// on the stack immediately after the return address. The stack_size/4 is
+// encoded in the UNWIND_X86_FRAMELESS_STACK_SIZE (max stack size is 1024).
+// The number of registers saved is encoded in UNWIND_X86_FRAMELESS_STACK_REG_COUNT.
+// UNWIND_X86_FRAMELESS_STACK_REG_PERMUTATION constains which registers were
+// saved and their order.
+// UNWIND_X86_MODE_STACK_IND:
+// A "frameless" (EBP not used as frame pointer) function large constant
+// stack size. This case is like the previous, except the stack size is too
+// large to encode in the compact unwind encoding. Instead it requires that
+// the function contains "subl $nnnnnnnn,ESP" in its prolog. The compact
+// encoding contains the offset to the nnnnnnnn value in the function in
+// UNWIND_X86_FRAMELESS_STACK_SIZE.
+// UNWIND_X86_MODE_DWARF:
+// No compact unwind encoding is available. Instead the low 24-bits of the
+// compact encoding is the offset of the DWARF FDE in the __eh_frame section.
+// This mode is never used in object files. It is only generated by the
+// linker in final linked images which have only DWARF unwind info for a
+// function.
+//
+// The permutation encoding is a Lehmer code sequence encoded into a
+// single variable-base number so we can encode the ordering of up to
+// six registers in a 10-bit space.
+//
+// The following is the algorithm used to create the permutation encoding used
+// with frameless stacks. It is passed the number of registers to be saved and
+// an array of the register numbers saved.
+//
+//uint32_t permute_encode(uint32_t registerCount, const uint32_t registers[6])
+//{
+// uint32_t renumregs[6];
+// for (int i=6-registerCount; i < 6; ++i) {
+// int countless = 0;
+// for (int j=6-registerCount; j < i; ++j) {
+// if ( registers[j] < registers[i] )
+// ++countless;
+// }
+// renumregs[i] = registers[i] - countless -1;
+// }
+// uint32_t permutationEncoding = 0;
+// switch ( registerCount ) {
+// case 6:
+// permutationEncoding |= (120*renumregs[0] + 24*renumregs[1]
+// + 6*renumregs[2] + 2*renumregs[3]
+// + renumregs[4]);
+// break;
+// case 5:
+// permutationEncoding |= (120*renumregs[1] + 24*renumregs[2]
+// + 6*renumregs[3] + 2*renumregs[4]
+// + renumregs[5]);
+// break;
+// case 4:
+// permutationEncoding |= (60*renumregs[2] + 12*renumregs[3]
+// + 3*renumregs[4] + renumregs[5]);
+// break;
+// case 3:
+// permutationEncoding |= (20*renumregs[3] + 4*renumregs[4]
+// + renumregs[5]);
+// break;
+// case 2:
+// permutationEncoding |= (5*renumregs[4] + renumregs[5]);
+// break;
+// case 1:
+// permutationEncoding |= (renumregs[5]);
+// break;
+// }
+// return permutationEncoding;
+//}
+//
+
+
+
+
+//
+// x86_64
+//
+// 1-bit: start
+// 1-bit: has lsda
+// 2-bit: personality index
+//
+// 4-bits: 0=old, 1=rbp based, 2=stack-imm, 3=stack-ind, 4=DWARF
+// rbp based:
+// 15-bits (5*3-bits per reg) register permutation
+// 8-bits for stack offset
+// frameless:
+// 8-bits stack size
+// 3-bits stack adjust
+// 3-bits register count
+// 10-bits register permutation
+//
+enum {
+ UNWIND_X86_64_MODE_MASK = 0x0F000000,
+ UNWIND_X86_64_MODE_RBP_FRAME = 0x01000000,
+ UNWIND_X86_64_MODE_STACK_IMMD = 0x02000000,
+ UNWIND_X86_64_MODE_STACK_IND = 0x03000000,
+ UNWIND_X86_64_MODE_DWARF = 0x04000000,
+
+ UNWIND_X86_64_RBP_FRAME_REGISTERS = 0x00007FFF,
+ UNWIND_X86_64_RBP_FRAME_OFFSET = 0x00FF0000,
+
+ UNWIND_X86_64_FRAMELESS_STACK_SIZE = 0x00FF0000,
+ UNWIND_X86_64_FRAMELESS_STACK_ADJUST = 0x0000E000,
+ UNWIND_X86_64_FRAMELESS_STACK_REG_COUNT = 0x00001C00,
+ UNWIND_X86_64_FRAMELESS_STACK_REG_PERMUTATION = 0x000003FF,
+
+ UNWIND_X86_64_DWARF_SECTION_OFFSET = 0x00FFFFFF,
+};
+
+enum {
+ UNWIND_X86_64_REG_NONE = 0,
+ UNWIND_X86_64_REG_RBX = 1,
+ UNWIND_X86_64_REG_R12 = 2,
+ UNWIND_X86_64_REG_R13 = 3,
+ UNWIND_X86_64_REG_R14 = 4,
+ UNWIND_X86_64_REG_R15 = 5,
+ UNWIND_X86_64_REG_RBP = 6,
+};
+//
+// For x86_64 there are four modes for the compact unwind encoding:
+// UNWIND_X86_64_MODE_RBP_FRAME:
+// RBP based frame where RBP is push on stack immediately after return address,
+// then RSP is moved to RBP. Thus, to unwind RSP is restored with the current
+// EPB value, then RBP is restored by popping off the stack, and the return
+// is done by popping the stack once more into the pc.
+// All non-volatile registers that need to be restored must have been saved
+// in a small range in the stack that starts RBP-8 to RBP-2040. The offset/8
+// is encoded in the UNWIND_X86_64_RBP_FRAME_OFFSET bits. The registers saved
+// are encoded in the UNWIND_X86_64_RBP_FRAME_REGISTERS bits as five 3-bit entries.
+// Each entry contains which register to restore.
+// UNWIND_X86_64_MODE_STACK_IMMD:
+// A "frameless" (RBP not used as frame pointer) function with a small
+// constant stack size. To return, a constant (encoded in the compact
+// unwind encoding) is added to the RSP. Then the return is done by
+// popping the stack into the pc.
+// All non-volatile registers that need to be restored must have been saved
+// on the stack immediately after the return address. The stack_size/8 is
+// encoded in the UNWIND_X86_64_FRAMELESS_STACK_SIZE (max stack size is 2048).
+// The number of registers saved is encoded in UNWIND_X86_64_FRAMELESS_STACK_REG_COUNT.
+// UNWIND_X86_64_FRAMELESS_STACK_REG_PERMUTATION constains which registers were
+// saved and their order.
+// UNWIND_X86_64_MODE_STACK_IND:
+// A "frameless" (RBP not used as frame pointer) function large constant
+// stack size. This case is like the previous, except the stack size is too
+// large to encode in the compact unwind encoding. Instead it requires that
+// the function contains "subq $nnnnnnnn,RSP" in its prolog. The compact
+// encoding contains the offset to the nnnnnnnn value in the function in
+// UNWIND_X86_64_FRAMELESS_STACK_SIZE.
+// UNWIND_X86_64_MODE_DWARF:
+// No compact unwind encoding is available. Instead the low 24-bits of the
+// compact encoding is the offset of the DWARF FDE in the __eh_frame section.
+// This mode is never used in object files. It is only generated by the
+// linker in final linked images which have only DWARF unwind info for a
+// function.
+//
+
+
+// ARM64
+//
+// 1-bit: start
+// 1-bit: has lsda
+// 2-bit: personality index
+//
+// 4-bits: 4=frame-based, 3=DWARF, 2=frameless
+// frameless:
+// 12-bits of stack size
+// frame-based:
+// 4-bits D reg pairs saved
+// 5-bits X reg pairs saved
+// DWARF:
+// 24-bits offset of DWARF FDE in __eh_frame section
+//
+enum {
+ UNWIND_ARM64_MODE_MASK = 0x0F000000,
+ UNWIND_ARM64_MODE_FRAMELESS = 0x02000000,
+ UNWIND_ARM64_MODE_DWARF = 0x03000000,
+ UNWIND_ARM64_MODE_FRAME = 0x04000000,
+
+ UNWIND_ARM64_FRAME_X19_X20_PAIR = 0x00000001,
+ UNWIND_ARM64_FRAME_X21_X22_PAIR = 0x00000002,
+ UNWIND_ARM64_FRAME_X23_X24_PAIR = 0x00000004,
+ UNWIND_ARM64_FRAME_X25_X26_PAIR = 0x00000008,
+ UNWIND_ARM64_FRAME_X27_X28_PAIR = 0x00000010,
+ UNWIND_ARM64_FRAME_D8_D9_PAIR = 0x00000100,
+ UNWIND_ARM64_FRAME_D10_D11_PAIR = 0x00000200,
+ UNWIND_ARM64_FRAME_D12_D13_PAIR = 0x00000400,
+ UNWIND_ARM64_FRAME_D14_D15_PAIR = 0x00000800,
+
+ UNWIND_ARM64_FRAMELESS_STACK_SIZE_MASK = 0x00FFF000,
+ UNWIND_ARM64_DWARF_SECTION_OFFSET = 0x00FFFFFF,
+};
+// For arm64 there are three modes for the compact unwind encoding:
+// UNWIND_ARM64_MODE_FRAME:
+// This is a standard arm64 prolog where FP/LR are immediately pushed on the
+// stack, then SP is copied to FP. If there are any non-volatile registers
+// saved, then are copied into the stack frame in pairs in a contiguous
+// range right below the saved FP/LR pair. Any subset of the five X pairs
+// and four D pairs can be saved, but the memory layout must be in register
+// number order.
+// UNWIND_ARM64_MODE_FRAMELESS:
+// A "frameless" leaf function, where FP/LR are not saved. The return address
+// remains in LR throughout the function. If any non-volatile registers
+// are saved, they must be pushed onto the stack before any stack space is
+// allocated for local variables. The stack sized (including any saved
+// non-volatile registers) divided by 16 is encoded in the bits
+// UNWIND_ARM64_FRAMELESS_STACK_SIZE_MASK.
+// UNWIND_ARM64_MODE_DWARF:
+// No compact unwind encoding is available. Instead the low 24-bits of the
+// compact encoding is the offset of the DWARF FDE in the __eh_frame section.
+// This mode is never used in object files. It is only generated by the
+// linker in final linked images which have only DWARF unwind info for a
+// function.
+//
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// Relocatable Object Files: __LD,__compact_unwind
+//
+////////////////////////////////////////////////////////////////////////////////
+
+//
+// A compiler can generated compact unwind information for a function by adding
+// a "row" to the __LD,__compact_unwind section. This section has the
+// S_ATTR_DEBUG bit set, so the section will be ignored by older linkers.
+// It is removed by the new linker, so never ends up in final executables.
+// This section is a table, initially with one row per function (that needs
+// unwind info). The table columns and some conceptual entries are:
+//
+// range-start pointer to start of function/range
+// range-length
+// compact-unwind-encoding 32-bit encoding
+// personality-function or zero if no personality function
+// lsda or zero if no LSDA data
+//
+// The length and encoding fields are 32-bits. The other are all pointer sized.
+//
+// In x86_64 assembly, these entry would look like:
+//
+// .section __LD,__compact_unwind,regular,debug
+//
+// #compact unwind for _foo
+// .quad _foo
+// .set L1,LfooEnd-_foo
+// .long L1
+// .long 0x01010001
+// .quad 0
+// .quad 0
+//
+// #compact unwind for _bar
+// .quad _bar
+// .set L2,LbarEnd-_bar
+// .long L2
+// .long 0x01020011
+// .quad __gxx_personality
+// .quad except_tab1
+//
+//
+// Notes: There is no need for any labels in the the __compact_unwind section.
+// The use of the .set directive is to force the evaluation of the
+// range-length at assembly time, instead of generating relocations.
+//
+// To support future compiler optimizations where which non-volatile registers
+// are saved changes within a function (e.g. delay saving non-volatiles until
+// necessary), there can by multiple lines in the __compact_unwind table for one
+// function, each with a different (non-overlapping) range and each with
+// different compact unwind encodings that correspond to the non-volatiles
+// saved at that range of the function.
+//
+// If a particular function is so wacky that there is no compact unwind way
+// to encode it, then the compiler can emit traditional DWARF unwind info.
+// The runtime will use which ever is available.
+//
+// Runtime support for compact unwind encodings are only available on 10.6
+// and later. So, the compiler should not generate it when targeting pre-10.6.
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// Final Linked Images: __TEXT,__unwind_info
+//
+////////////////////////////////////////////////////////////////////////////////
+
+//
+// The __TEXT,__unwind_info section is laid out for an efficient two level lookup.
+// The header of the section contains a coarse index that maps function address
+// to the page (4096 byte block) containing the unwind info for that function.
+//
+
+#define UNWIND_SECTION_VERSION 1
+struct unwind_info_section_header
+{
+ uint32_t version; // UNWIND_SECTION_VERSION
+ uint32_t commonEncodingsArraySectionOffset;
+ uint32_t commonEncodingsArrayCount;
+ uint32_t personalityArraySectionOffset;
+ uint32_t personalityArrayCount;
+ uint32_t indexSectionOffset;
+ uint32_t indexCount;
+ // compact_unwind_encoding_t[]
+ // uint32_t personalities[]
+ // unwind_info_section_header_index_entry[]
+ // unwind_info_section_header_lsda_index_entry[]
+};
+
+struct unwind_info_section_header_index_entry
+{
+ uint32_t functionOffset;
+ uint32_t secondLevelPagesSectionOffset; // section offset to start of regular or compress page
+ uint32_t lsdaIndexArraySectionOffset; // section offset to start of lsda_index array for this range
+};
+
+struct unwind_info_section_header_lsda_index_entry
+{
+ uint32_t functionOffset;
+ uint32_t lsdaOffset;
+};
+
+//
+// There are two kinds of second level index pages: regular and compressed.
+// A compressed page can hold up to 1021 entries, but it cannot be used
+// if too many different encoding types are used. The regular page holds
+// 511 entries.
+//
+
+struct unwind_info_regular_second_level_entry
+{
+ uint32_t functionOffset;
+ compact_unwind_encoding_t encoding;
+};
+
+#define UNWIND_SECOND_LEVEL_REGULAR 2
+struct unwind_info_regular_second_level_page_header
+{
+ uint32_t kind; // UNWIND_SECOND_LEVEL_REGULAR
+ uint16_t entryPageOffset;
+ uint16_t entryCount;
+ // entry array
+};
+
+#define UNWIND_SECOND_LEVEL_COMPRESSED 3
+struct unwind_info_compressed_second_level_page_header
+{
+ uint32_t kind; // UNWIND_SECOND_LEVEL_COMPRESSED
+ uint16_t entryPageOffset;
+ uint16_t entryCount;
+ uint16_t encodingsPageOffset;
+ uint16_t encodingsCount;
+ // 32-bit entry array
+ // encodings array
+};
+
+#define UNWIND_INFO_COMPRESSED_ENTRY_FUNC_OFFSET(entry) (entry & 0x00FFFFFF)
+#define UNWIND_INFO_COMPRESSED_ENTRY_ENCODING_INDEX(entry) ((entry >> 24) & 0xFF)
+
+
+
+#endif
+
--
1.8.3.1

62
lld.spec
View File

@ -1,8 +1,7 @@
%global rc_ver 2 #%%global rc_ver 5
%global baserelease 3
%global lld_srcdir lld-%{version}%{?rc_ver:rc%{rc_ver}}.src %global lld_srcdir lld-%{version}%{?rc_ver:rc%{rc_ver}}.src
%global maj_ver 11 %global maj_ver 12
%global min_ver 1 %global min_ver 0
%global patch_ver 0 %global patch_ver 0
# Don't include unittests in automatic generation of provides or requires. # Don't include unittests in automatic generation of provides or requires.
@ -10,8 +9,8 @@
%global __requires_exclude ^libgtest.*$ %global __requires_exclude ^libgtest.*$
Name: lld Name: lld
Version: %{maj_ver}.%{min_ver}.%{patch_ver} Version: %{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:~rc%{rc_ver}}
Release: %{?rc_ver:0.}%{baserelease}%{?rc_ver:.rc%{rc_ver}}%{?dist} Release: 1%{?dist}
Summary: The LLVM Linker Summary: The LLVM Linker
License: NCSA License: NCSA
@ -24,8 +23,10 @@ Source4: lit.lld-test.cfg.py
ExcludeArch: s390x ExcludeArch: s390x
Patch0: 0001-CMake-Check-for-gtest-headers-even-if-lit.py-is-not-.patch Patch0: 0001-PATCH-lld-CMake-Check-for-gtest-headers-even-if-lit..patch
Patch1: 0001-Revert-lld-Initial-commit-for-new-Mach-O-backend.patch
# Bundle libunwind header need during build for MachO support
Patch1: 0002-PATCH-lld-Import-compact_unwind_encoding.h-from-libu.patch
BuildRequires: gcc BuildRequires: gcc
BuildRequires: gcc-c++ BuildRequires: gcc-c++
@ -81,13 +82,7 @@ LLVM regression tests.
%prep %prep
%{gpgverify} --keyring='%{SOURCE2}' --signature='%{SOURCE1}' --data='%{SOURCE0}' %{gpgverify} --keyring='%{SOURCE2}' --signature='%{SOURCE1}' --data='%{SOURCE0}'
%setup -q -n %{lld_srcdir} %autosetup -n %{lld_srcdir} -p2
%patch0 -p1 -b .gtest-fix
# Remove the MachO backend since it doesn't seem to work on big-endian hosts.
%ifarch s390x
%patch1 -p2 -b .remove-MachO
%endif
%build %build
@ -144,7 +139,7 @@ mv %{lit_unit_cfg} %{buildroot}%{_datadir}/lld/src/%{_arch}.Unit.site.cfg.py
tar --sort=name --mtime='UTC 2020-01-01' -c test/ | gzip -n > %{buildroot}%{_datadir}/lld/src/test.tar.gz tar --sort=name --mtime='UTC 2020-01-01' -c test/ | gzip -n > %{buildroot}%{_datadir}/lld/src/test.tar.gz
install -d %{buildroot}%{_libexecdir}/tests/lld install -d %{buildroot}%{_libexecdir}/tests/lld
cp %{SOURCE3} %{buildroot}%{_libexecdir}/tests/lld install -m 0755 %{SOURCE3} %{buildroot}%{_libexecdir}/tests/lld
# Install unit test binaries # Install unit test binaries
install -d %{buildroot}%{_libdir}/lld/ install -d %{buildroot}%{_libdir}/lld/
@ -157,6 +152,9 @@ cp %{_target_platform}/%{_lib}/libgtest*so* %{buildroot}%{_libdir}/lld/
# Install libraries and binaries # Install libraries and binaries
%cmake_install %cmake_install
# This is generated by Patch1 during build and (probably) must be removed afterward
rm %{buildroot}%{_includedir}/mach-o/compact_unwind_encoding.h
# Required when using update-alternatives: # Required when using update-alternatives:
# https://docs.fedoraproject.org/en-US/packaging-guidelines/Alternatives/ # https://docs.fedoraproject.org/en-US/packaging-guidelines/Alternatives/
touch %{buildroot}%{_bindir}/ld touch %{buildroot}%{_bindir}/ld
@ -184,6 +182,7 @@ fi
%{_bindir}/lld* %{_bindir}/lld*
%{_bindir}/ld.lld %{_bindir}/ld.lld
%{_bindir}/ld64.lld %{_bindir}/ld64.lld
%{_bindir}/ld64.lld.darwinnew
%{_bindir}/wasm-ld %{_bindir}/wasm-ld
%files devel %files devel
@ -203,8 +202,35 @@ fi
%{_datadir}/lld/lit.lld-test.cfg.py %{_datadir}/lld/lit.lld-test.cfg.py
%changelog %changelog
* Fri Apr 16 2021 Mohan Boddu <mboddu@redhat.com> - 11.1.0-0.3.rc2 * Fri Apr 16 2021 Tom Stellard <tstellar@redhat.com> - 12.0.0-1
- Rebuilt for RHEL 9 BETA on Apr 15th 2021. Related: rhbz#1947937 - 12.0.0 Release
* Thu Apr 08 2021 sguelton@redhat.com - 12.0.0-0.8.rc5
- New upstream release candidate
* Wed Apr 07 2021 Tom Stellard <tstellar@redhat.com> - 12.0.0-0.7.rc4
- Set executable permissions on run-lit-tests
* Fri Apr 02 2021 sguelton@redhat.com - 12.0.0-0.6.rc4
- New upstream release candidate
* Wed Mar 31 2021 Jonathan Wakely <jwakely@redhat.com> - 12.0.0-0.5.rc3
- Rebuilt for removed libstdc++ symbols (#1937698)
* Thu Mar 11 2021 sguelton@redhat.com - 12.0.0-0.4.rc3
- LLVM 12.0.0 rc3
* Wed Mar 10 2021 sguelton@redhat.com - 12.0.0-0.3.rc2
- rebuilt
* Wed Feb 24 2021 sguelton@redhat.com - 12.0.0-0.2.rc2
- llvm 12.0.0-rc2 release
* Tue Feb 16 2021 sguelton@redhat.com - 12.0.0-0.1.rc1
- llvm 12.0.0-rc1 release
* Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 11.1.0-0.3.rc2
- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
* Fri Jan 22 2021 Serge Guelton - 11.1.0-0.2.rc2 * Fri Jan 22 2021 Serge Guelton - 11.1.0-0.2.rc2
- llvm 11.1.0-rc2 release - llvm 11.1.0-rc2 release

4
sources
View File

@ -1,2 +1,2 @@
SHA512 (lld-11.1.0rc2.src.tar.xz) = f4ab66bcfd974601bb53fc2e8d791316782d1143486beedb9cf71f8256ee67221bb8e5093e48f83a173c16299b89013052d2d423e45394f5250e29df7a268915 SHA512 (lld-12.0.0.src.tar.xz) = a7185061ce45279cdc0e55dcd6eba94798cdd5bf5a95b7e23b0bf701e0baaa4894df1b0da93de0300f5b8a3987c138e81bb5cf2a0ecfcba6b13af013247f92e6
SHA512 (lld-11.1.0rc2.src.tar.xz.sig) = 806a12aa29139705d5735beba558d8d7bbe3b5df80cea3266a470b6774e6190a8182a37c95c81f7dcc2395317d9d79c29389312f9c2eaeaf6073f37d3c432c85 SHA512 (lld-12.0.0.src.tar.xz.sig) = 709f128a830b5a30fd3bac5a5dcdc0ae32fa74e307eaed785f9f8fa1c502d4d52a951ec0b0c32248325580bc4aa5541510f92ba468c65d552bd3d6a55ab0ff93