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ELF symbol table field st_other support,

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excluding visibility bits.

Mips (Mips16) specific e_header setting.

EF_MIPS_ARCH_ASE_M16 needs to be set in the 
ELF header flags for Mips16.

Contributer: Reed Kotler


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175566 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jack Carter 2013-02-19 22:14:34 +00:00
parent 4263ed33a7
commit c989c61798
4 changed files with 27 additions and 5 deletions
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7
include/llvm/Support/ELF.h
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@ -738,10 +738,12 @@ enum {
EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions
EF_MIPS_PIC = 0x00000002, // Position independent code
EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code
//ARCH_ASE
EF_MIPS_MICROMIPS = 0x02000000, // microMIPS
EF_MIPS_ARCH_ASE_M16 =
0x04000000, // Has Mips-16 ISA extensions
//ARCH
EF_MIPS_ARCH = 0xf0000000, // Mask for applying EF_MIPS_ARCH_ variant
EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set
EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set
EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set
@ -750,7 +752,8 @@ enum {
EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h
EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h
EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2
EF_MIPS_ARCH_64R2 = 0x80000000 // mips64r2
EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2
EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant
};
// ELF Relocation types for Mips

5
lib/Target/Mips/MCTargetDesc/MipsELFStreamer.cpp
View File

@ -36,7 +36,10 @@ namespace llvm {
MCAssembler& MCA = getAssembler();
unsigned EFlags = MCA.getELFHeaderEFlags();
EFlags |= ELF::EF_MIPS_NOREORDER;
if (Subtarget.inMips16Mode())
EFlags |= ELF::EF_MIPS_ARCH_ASE_M16;
else
EFlags |= ELF::EF_MIPS_NOREORDER;
// Architecture
if (Subtarget.hasMips64r2())

7
test/MC/Mips/elf_eflags.ll
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@ -25,7 +25,8 @@
; RUN: llc -filetype=obj -mtriple mipsel-unknown-linux -mcpu=mips64r2 -relocation-model=static %s -o - | elf-dump --dump-section-data | FileCheck -check-prefix=CHECK-BE64R2 %s
; RUN: llc -filetype=obj -mtriple mipsel-unknown-linux -mcpu=mips64r2 %s -o - | elf-dump --dump-section-data | FileCheck -check-prefix=CHECK-BE64R2_PIC %s
; RUN: llc -filetype=obj -mtriple mipsel-unknown-linux -mcpu=mips32r2 -mattr=+mips16 -relocation-model=pic %s -o - | elf-dump --dump-section-data | FileCheck -check-prefix=CHECK-LE32R2-MIPS16 %s
; 32(R1) bit with NO_REORDER and static
; CHECK-BE32: ('e_flags', 0x50000001)
;
@ -56,7 +57,9 @@
; 64R2 bit with NO_REORDER and PIC
; CHECK-BE64R2_PIC: ('e_flags', 0x80000003)
;
; 32R2 bit MIPS16 with PIC
; CHECK-LE32R2-MIPS16: ('e_flags', 0x74000002)
define i32 @main() nounwind {
entry:
ret i32 0

13
test/MC/Mips/elf_st_other.ll Normal file
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@ -0,0 +1,13 @@
; This tests value of ELF st_other field for function symbol table entries.
; For microMIPS value should be equal to STO_MIPS_MICROMIPS.
; RUN: llc -filetype=obj -mtriple mipsel-unknown-linux -mcpu=mips32r2 -mattr=+micromips %s -o - | elf-dump --dump-section-data | FileCheck %s
define i32 @main() nounwind {
entry:
ret i32 0
}
; CHECK: 'main'
; CHECK: ('st_other', 0x80)