From 6c90d54f67f0b2b7a4736e119f091e66afbabcce Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Thu, 25 Dec 2014 18:22:22 +0000
Subject: Pull in r214284 from upstream llvm trunk (by Hal Finkel):
[PowerPC] Add JMP_SLOT relocation definitions
This will be required by upcoming patches for LLDB support.
Patch by Justin Hibbits!
Pull in r221510 from upstream llvm trunk (by Justin Hibbits):
Add Position-independent Code model Module API.
Summary:
This makes PIC levels a Module flag attribute, which can be queried by the
backend. The flag is named `PIC Level`, and can have a value of:
0 - Backend-default
1 - Small-model (-fpic)
2 - Large-model (-fPIC)
These match the `-pic-level' command line argument for clang, and the value of the
preprocessor macro `__PIC__'.
Test Plan:
New flags tests specific for the 'PIC Level' module flag.
Tests to be added as part of a future commit for PowerPC, which will use this new API.
Reviewers: rafael, echristo
Reviewed By: rafael, echristo
Subscribers: rafael, llvm-commits
Differential Revision: http://reviews.llvm.org/D5882
Pull in r221791 from upstream llvm trunk (by Justin Hibbits):
Add support for small-model PIC for PowerPC.
Summary:
Large-model was added first. With the addition of support for multiple PIC
models in LLVM, now add small-model PIC for 32-bit PowerPC, SysV4 ABI. This
generates more optimal code, for shared libraries with less than about 16380
data objects.
Test Plan: Test cases added or updated
Reviewers: joerg, hfinkel
Reviewed By: hfinkel
Subscribers: jholewinski, mcrosier, emaste, llvm-commits
Differential Revision: http://reviews.llvm.org/D5399
Together, these changes implement small-model PIC support for PowerPC.
Thanks to Justin Hibbits and Roman Divacky for their assistance in
getting this working.
---
contrib/llvm/include/llvm/IR/Module.h | 10 ++++++++++
contrib/llvm/include/llvm/MC/MCExpr.h | 1 +
contrib/llvm/include/llvm/Support/CodeGen.h | 4 ++++
contrib/llvm/include/llvm/Support/ELF.h | 3 +++
4 files changed, 18 insertions(+)
(limited to 'contrib/llvm/include')
diff --git a/contrib/llvm/include/llvm/IR/Module.h b/contrib/llvm/include/llvm/IR/Module.h
index 26f62db..0b0f4ea 100644
--- a/contrib/llvm/include/llvm/IR/Module.h
+++ b/contrib/llvm/include/llvm/IR/Module.h
@@ -23,6 +23,7 @@
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/Metadata.h"
#include "llvm/Support/CBindingWrapping.h"
+#include "llvm/Support/CodeGen.h"
#include "llvm/Support/DataTypes.h"
#include <system_error>
@@ -620,6 +621,15 @@ public:
unsigned getDwarfVersion() const;
/// @}
+/// @name Utility functions for querying and setting PIC level
+/// @{
+
+ /// \brief Returns the PIC level (small or large model)
+ PICLevel::Level getPICLevel() const;
+
+ /// \brief Set the PIC level (small or large model)
+ void setPICLevel(PICLevel::Level PL);
+/// @}
};
/// An raw_ostream inserter for modules.
diff --git a/contrib/llvm/include/llvm/MC/MCExpr.h b/contrib/llvm/include/llvm/MC/MCExpr.h
index e96ecb4..163574e 100644
--- a/contrib/llvm/include/llvm/MC/MCExpr.h
+++ b/contrib/llvm/include/llvm/MC/MCExpr.h
@@ -238,6 +238,7 @@ public:
VK_PPC_GOT_TLSLD_HI, // symbol@got@tlsld@h
VK_PPC_GOT_TLSLD_HA, // symbol@got@tlsld@ha
VK_PPC_TLSLD, // symbol@tlsld
+ VK_PPC_LOCAL, // symbol@local
VK_Mips_GPREL,
VK_Mips_GOT_CALL,
diff --git a/contrib/llvm/include/llvm/Support/CodeGen.h b/contrib/llvm/include/llvm/Support/CodeGen.h
index 240eba6..243f2dd 100644
--- a/contrib/llvm/include/llvm/Support/CodeGen.h
+++ b/contrib/llvm/include/llvm/Support/CodeGen.h
@@ -30,6 +30,10 @@ namespace llvm {
enum Model { Default, JITDefault, Small, Kernel, Medium, Large };
}
+ namespace PICLevel {
+ enum Level { Default=0, Small=1, Large=2 };
+ }
+
// TLS models.
namespace TLSModel {
enum Model {
diff --git a/contrib/llvm/include/llvm/Support/ELF.h b/contrib/llvm/include/llvm/Support/ELF.h
index 13394d3..ddc7ff8 100644
--- a/contrib/llvm/include/llvm/Support/ELF.h
+++ b/contrib/llvm/include/llvm/Support/ELF.h
@@ -459,6 +459,8 @@ enum {
R_PPC_GOT16_HI = 16,
R_PPC_GOT16_HA = 17,
R_PPC_PLTREL24 = 18,
+ R_PPC_JMP_SLOT = 21,
+ R_PPC_LOCAL24PC = 23,
R_PPC_REL32 = 26,
R_PPC_TLS = 67,
R_PPC_DTPMOD32 = 68,
@@ -547,6 +549,7 @@ enum {
R_PPC64_GOT16_LO = 15,
R_PPC64_GOT16_HI = 16,
R_PPC64_GOT16_HA = 17,
+ R_PPC64_JMP_SLOT = 21,
R_PPC64_REL32 = 26,
R_PPC64_ADDR64 = 38,
R_PPC64_ADDR16_HIGHER = 39,
--
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