Add support for new functionality in the msp430 backend of GCC.
authorJozef Lawrynowicz <jozef.l@mittosystems.com>
Mon, 7 Oct 2019 15:34:31 +0000 (16:34 +0100)
committerNick Clifton <nickc@redhat.com>
Mon, 7 Oct 2019 15:34:31 +0000 (16:34 +0100)
commitc0ea7c52e10024ecd29b8f0e23b666b6af926c6e
tree6be0be49c09e42f501772b4575576057ac57bc33
parent93370e8e7b406cf0aeedcf57cf457c07d6a2c7e6
Add support for new functionality in the msp430 backend of GCC.

This functionality will generate a new GNU object attribute for the "data region"
has been added. This object attribute is used
mark whether the compiler has generated code assuming that data could be in the
upper or lower memory regions.

Code which assumes data is always in the lower memory region is incompatible
with code which uses the full memory range for data.

The patch also adds a new assembler directive ".mspabi_attribute" to handle the
existing MSPABI object attributes. GCC will now emit both .gnu_attribute and
.mspabi_attribute directives to indicate what options the source file was
compiled with.

The assembler will now check the values set in these directives against the
options that the it has been invoked with. If there is a discrepancy, the
assembler will exit with an error.

bfd * elf32-msp430.c (elf32_msp430_merge_mspabi_attributes): Rename to..
(elf32_msp430_merge_msp430_attributes): Add support for merging the GNU
object attribute for data region.

binutils* readelf.c (display_msp430_gnu_attribute): New.
(process_arch_specific): Use msp430 specific handler for GNU
attributes.

gas * config/tc-msp430.c (md_parse_option): Set lower_data_region_only to
FALSE if the data region is set to "upper", "either" or "none".
(msp430_object_attribute): New.
(md_pseudo_table): Handle .mspabi_attribute and .gnu_attribute.
(msp430_md_end): Replace hard-coded attribute values with enums.
Handle data region object attribute.
* doc/as.texi: Document MSP430 Data Region object attribute.
* doc/c-msp430.texi: Document the .mspabi_attribute directive.
* testsuite/gas/msp430/attr-430-small-bad.d: New test.
* testsuite/gas/msp430/attr-430-small-bad.l: New test.
* testsuite/gas/msp430/attr-430-small-good.d: New test.
* testsuite/gas/msp430/attr-430-small.s: New test.
* testsuite/gas/msp430/attr-430x-large-any-bad.d: New test.
* testsuite/gas/msp430/attr-430x-large-any-bad.l: New test.
* testsuite/gas/msp430/attr-430x-large-any-good.d: New test.
* testsuite/gas/msp430/attr-430x-large-any.s: New test.
* testsuite/gas/msp430/attr-430x-large-lower-bad.d: New test.
* testsuite/gas/msp430/attr-430x-large-lower-bad.l: New test.
* testsuite/gas/msp430/attr-430x-large-lower-good.d: New test.
* testsuite/gas/msp430/attr-430x-large-lower.s: New test.
* testsuite/gas/msp430/msp430.exp: Run new tests.

include * elf/msp430.h: Add enums for MSPABI and GNU object attribute tag names
and values.

ld * testsuite/ld-msp430-elf/attr-gnu-main.s: New test.
* testsuite/ld-msp430-elf/attr-gnu-obj.s: New test.
* testsuite/ld-msp430-elf/attr-gnu-region-lower-upper.d: New test.
* testsuite/ld-msp430-elf/attr-gnu-region-lower.d: New test.
* testsuite/ld-msp430-elf/attr-gnu-region-upper.d: New test.
* testsuite/ld-msp430-elf/msp430-elf.exp: Run new tests.
30 files changed:
bfd/ChangeLog
bfd/elf32-msp430.c
binutils/ChangeLog
binutils/readelf.c
gas/ChangeLog
gas/config/tc-msp430.c
gas/doc/as.texi
gas/doc/c-msp430.texi
gas/testsuite/gas/msp430/attr-430-small-bad.d [new file with mode: 0644]
gas/testsuite/gas/msp430/attr-430-small-bad.l [new file with mode: 0644]
gas/testsuite/gas/msp430/attr-430-small-good.d [new file with mode: 0644]
gas/testsuite/gas/msp430/attr-430-small.s [new file with mode: 0644]
gas/testsuite/gas/msp430/attr-430x-large-any-bad.d [new file with mode: 0644]
gas/testsuite/gas/msp430/attr-430x-large-any-bad.l [new file with mode: 0644]
gas/testsuite/gas/msp430/attr-430x-large-any-good.d [new file with mode: 0644]
gas/testsuite/gas/msp430/attr-430x-large-any.s [new file with mode: 0644]
gas/testsuite/gas/msp430/attr-430x-large-lower-bad.d [new file with mode: 0644]
gas/testsuite/gas/msp430/attr-430x-large-lower-bad.l [new file with mode: 0644]
gas/testsuite/gas/msp430/attr-430x-large-lower-good.d [new file with mode: 0644]
gas/testsuite/gas/msp430/attr-430x-large-lower.s [new file with mode: 0644]
gas/testsuite/gas/msp430/msp430.exp
include/ChangeLog
include/elf/msp430.h
ld/ChangeLog
ld/testsuite/ld-msp430-elf/attr-gnu-main.s [new file with mode: 0644]
ld/testsuite/ld-msp430-elf/attr-gnu-obj.s [new file with mode: 0644]
ld/testsuite/ld-msp430-elf/attr-gnu-region-lower-upper.d [new file with mode: 0644]
ld/testsuite/ld-msp430-elf/attr-gnu-region-lower.d [new file with mode: 0644]
ld/testsuite/ld-msp430-elf/attr-gnu-region-upper.d [new file with mode: 0644]
ld/testsuite/ld-msp430-elf/msp430-elf.exp