Support for microMIPS branch instructions.

llvm-svn: 193992

Support for microMIPS jump instructions

llvm-svn: 193623

Support for microMIPS relocations 1.

llvm-svn: 193247

This patch reworks how llvm targets set
and update ELF header e_flags.

Currently gathering information such as symbol,
section and data is done by collecting it in an
MCAssembler object. From MCA

This patch reworks how llvm targets set
and update ELF header e_flags.

Currently gathering information such as symbol,
section and data is done by collecting it in an
MCAssembler object. From MCAssembler and MCAsmLayout
objects ELFObjectWriter::WriteObject() forms and
streams out the ELF object file.

This patch just adds a few members to the MCAssember
class to store and access the e_flag settings. It
allows for runtime additions to the e_flag by
assembler directives. The standalone assembler can
get to MCAssembler from getParser().getStreamer().getAssembler().

This patch is the generic infrastructure and will be
followed by patches for ARM and Mips for their target
specific use.

Contributer: Jack Carter

llvm-svn: 173882

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This patch fixes a Mips specific bug where
we need to generate a N64 compound relocation
R_MIPS_GPREL_32/R_MIPS_64/R_MIPS_NONE.

The bug was exposed by the SingleSourcetest case
DuffsDevice.c.

Con

This patch fixes a Mips specific bug where
we need to generate a N64 compound relocation
R_MIPS_GPREL_32/R_MIPS_64/R_MIPS_NONE.

The bug was exposed by the SingleSourcetest case
DuffsDevice.c.

Contributer: Jack Carter
llvm-svn: 172496

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Mips direct object xgot support

This patch provides support for the MIPS relocations:

*) R_MIPS_GOT_HI16
*) R_MIPS_GOT_LO16
*) R_MIPS_CALL_HI16
*) R_MIPS_CALL_LO16

These are us

Mips direct object xgot support

This patch provides support for the MIPS relocations:

*) R_MIPS_GOT_HI16
*) R_MIPS_GOT_LO16
*) R_MIPS_CALL_HI16
*) R_MIPS_CALL_LO16

These are used for large GOT instruction sequences.

Contributer: Jack Carter
llvm-svn: 168471

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For mips64 switch statements in subroutines could generate
within the codegen EK_GPRel64BlockAddress. This was not
supported for direct object output and resulted in an assertion.

This change adds

For mips64 switch statements in subroutines could generate
within the codegen EK_GPRel64BlockAddress. This was not
supported for direct object output and resulted in an assertion.

This change adds support for EK_GPRel64BlockAddress for
direct object.

One fallout from this is to turn on rela relocations
for mips64 to match gas.

llvm-svn: 162334

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Correct MCJIT functionality for MIPS32 architecture.

No new tests are added.
All tests in ExecutionEngine/MCJIT that have been failing pass after this patch
is applied (when "make check" is done on

Correct MCJIT functionality for MIPS32 architecture.

No new tests are added.
All tests in ExecutionEngine/MCJIT that have been failing pass after this patch
is applied (when "make check" is done on a mips board).

Patch by Petar Jovanovic.

llvm-svn: 162135

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Mips relocation R_MIPS_64 relocates a 64 bit double word.

I hit this in a very large program (spirit.cpp), but
have not figured out how to make a small make check
test for it.

llvm-svn: 161366

Mips relocations R_MIPS_HIGHER and R_MIPS_HIGHEST.

These 2 relocations gain access to the
highest and the second highest 16 bits
of a 64 bit object.

R_MIPS_HIGHER %higher(A+S)
The %higher(x) funct

Mips relocations R_MIPS_HIGHER and R_MIPS_HIGHEST.

These 2 relocations gain access to the
highest and the second highest 16 bits
of a 64 bit object.

R_MIPS_HIGHER %higher(A+S)
The %higher(x) function is [ (((long long) x + 0x80008000LL) >> 32) & 0xffff ].

R_MIPS_HIGHEST %highest(A+S)
The %highest(x) function is [ (((long long) x + 0x800080008000LL) >> 48) & 0xffff ].

llvm-svn: 161348

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The Mips specific relocation R_MIPS_GOT_DISP
is used in cases where global symbols are
directly represented in the GOT and we use an
offset into the global offset table.

This patch adds direct ob

The Mips specific relocation R_MIPS_GOT_DISP
is used in cases where global symbols are
directly represented in the GOT and we use an
offset into the global offset table.

This patch adds direct object support for R_MIPS_GOT_DISP.

llvm-svn: 160183

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This allows hello world to be compiled for Mips 64 direct object.

It takes advantage of r159299 which introduces relocation support for N64.
elf-dump needed to be upgraded to support N64 relocation

This allows hello world to be compiled for Mips 64 direct object.

It takes advantage of r159299 which introduces relocation support for N64.
elf-dump needed to be upgraded to support N64 relocations as well.

This passes make check.

Jack

llvm-svn: 159301

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The ELF relocation record format is different for N64
which many Mips 64 ABIs use than for O64 which many
if not all other target ABIs use.

Most architectures have the following 64 bit relocation

The ELF relocation record format is different for N64
which many Mips 64 ABIs use than for O64 which many
if not all other target ABIs use.

Most architectures have the following 64 bit relocation record format:

typedef struct
{
Elf64_Addr r_offset; /* Address of reference */
Elf64_Xword r_info; /* Symbol index and type of relocation */
} Elf64_Rel;

typedef struct
{
Elf64_Addr r_offset;
Elf64_Xword r_info;
Elf64_Sxword r_addend;
} Elf64_Rela;

Whereas N64 has the following format:

typedef struct
{
Elf64_Addr r_offset;/* Address of reference */
Elf64_Word r_sym; /* Symbol index */
Elf64_Byte r_ssym; /* Special symbol */
Elf64_Byte r_type3; /* Relocation type */
Elf64_Byte r_type2; /* Relocation type */
Elf64_Byte r_type; /* Relocation type */
} Elf64_Rel;

typedef struct
{
Elf64_Addr r_offset;/* Address of reference */
Elf64_Word r_sym; /* Symbol index */
Elf64_Byte r_ssym; /* Special symbol */
Elf64_Byte r_type3; /* Relocation type */
Elf64_Byte r_type2; /* Relocation type */
Elf64_Byte r_type; /* Relocation type */
Elf64_Sxword r_addend;
} Elf64_Rela;

The structure is the same size, but the r_info data element
is now 5 separate elements. Besides the content aspects,
endian byte reordering will be different for the area with
each element being endianized separately.

I treat this as generic and continue to pass r_type as
an integer masking and unmasking the byte sized N64
values for N64 mode. I've implemented this and it causes no
affect on other current targets.

This passes make check.

Jack

llvm-svn: 159299

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Fix coding style violations. Remove white spaces and tabs.

llvm-svn: 158471

Initial 64 bit direct object support.

This patch allows llvm to recognize that a 64 bit object file is being produced
and that the subsequently generated ELF header has the correct information.

The

Initial 64 bit direct object support.

This patch allows llvm to recognize that a 64 bit object file is being produced
and that the subsequently generated ELF header has the correct information.

The test case checks for both big and little endian flavors.

Patch by Jack Carter.

llvm-svn: 153889

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Sort relocation entries before they are written out to a file. MIPS ABI
imposes a constraint that GOT16 referring to a local symbol or HI16 has to be
followed immediately by a matching LO16 relocatio

Sort relocation entries before they are written out to a file. MIPS ABI
imposes a constraint that GOT16 referring to a local symbol or HI16 has to be
followed immediately by a matching LO16 relocation.

llvm-svn: 153553

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Pass endian information to constructors. Define separate functions to create
objects for big endian and little endian targets.

Patch by Jack Carter.

llvm-svn: 151788

remove Emacs-tag form .cpp files in Mips Backend, and fix some typo.

llvm-svn: 150805

add Emacs tag and fix some comment error in file headers

llvm-svn: 150775

Ensure .AliasedSymbol() is called on all uses of getSymbol(). Affects ARM and MIPS ELF backends.

Fixes PR11877

llvm-svn: 149180

Move the Mips only bits of the ELF writer to lib/Target/Mips.

llvm-svn: 147133