From 7ef3addbe195b6283d0baf59e081146dfb211c97 Mon Sep 17 00:00:00 2001
From: Jozef Lawrynowicz <jozef.l@somniumtech.com>
Date: Tue, 29 Aug 2017 17:18:43 +0100
Subject: Improve MSP430 section placement.

ld	* emultempl/msp430.em (change_output_section): New function.
	(move_prefixed_section): New function.
	(add_region_prefix): New function.
	(msp430_elf_after_open): New function.
	(gld${EMULATION_NAME}_add_options): Implement.
	(gld${EMULATION_NAME}_list_options): Implement.
	(gld${EMULATION_NAME}_handle_option): Implement.
	* ld.texinfo: Document new options.
	* testsuite/ld-msp430-elf/main-bss-lower.d: New.
	* testsuite/ld-msp430-elf/main-bss-upper.d: New.
	* testsuite/ld-msp430-elf/main-const-lower.d: New.
	* testsuite/ld-msp430-elf/main-const-upper.d: New.
	* testsuite/ld-msp430-elf/main-text-lower.d: New.
	* testsuite/ld-msp430-elf/main-text-upper.d: New.
	* testsuite/ld-msp430-elf/main-var-lower.d: New.
	* testsuite/ld-msp430-elf/main-var-upper.d: New.
	* testsuite/ld-msp430-elf/main-with-data-bss-unique-sec.s: New.
	* testsuite/ld-msp430-elf/main-with-data-bss.s: New.
	* testsuite/ld-msp430-elf/main-with-text-rodata-unique-sec.s: New.
	* testsuite/ld-msp430-elf/main-with-text-rodata.s: New.
	* testsuite/ld-msp430-elf/msp430-elf.exp: New.
	* testsuite/ld-msp430-elf/msp430-no-lower.ld: New.
	* testsuite/ld-msp430-elf/msp430.ld: New.
	* emultempl/msp430.em (data_statement_size): New.
	(eval_upper_either_sections): New.
	(eval_lower_either_sections): New.
	(intermediate_relax_sections): New.
	(msp430_elf_after_allocation): New.
	* emultempl/msp430.em (gld${EMULATION_NAME}_place_orphan): Always
	place sections in the lower region.

gas	* config/tc-msp430.c (md_parse_option): Define high data and high
	bss symbols if -mdata-region is passed.
	Define -mdata-region open.
	* doc/c-msp430.texi: Document -mdata-region.
	* testsuite/gas/msp430/high-data-bss-sym.d: New test.
	* testsuite/gas/msp430/high-data-bss-sym.s: New.
	* testsuite/gas/msp430/msp430.exp: Add -mdata-region tests.
---
 gas/doc/c-msp430.texi | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'gas/doc')

diff --git a/gas/doc/c-msp430.texi b/gas/doc/c-msp430.texi
index eb0e757..d80f540 100644
--- a/gas/doc/c-msp430.texi
+++ b/gas/doc/c-msp430.texi
@@ -107,6 +107,19 @@ disables warnings about missing NOP instructions.
 mark the object file as one that requires data to copied from ROM to
 RAM at execution startup.  Disabled by default.
 
+@item -mdata-region=@var{region}
+Select the region data will be placed in.
+Region placement is performed by the compiler and linker.  The only effect this
+option will have on the assembler is that if @var{upper} or @var{either} is
+selected, then the symbols to initialise high data and bss will be defined.
+Valid @var{region} values are:
+@table @code
+@item none
+@item lower
+@item upper
+@item either
+@end table
+
 @end table
 
 @node MSP430 Syntax
-- 
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