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| author | Jozef Lawrynowicz <jozef.l@mittosystems.com> | 2020-08-07 11:48:27 +0100 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2020-08-07 15:16:43 +0200 |
| commit | 748970c8337eb286d816ac623c8ee097d4085c29 (patch) | |
| tree | 26338bfc8d79c477889ee17a526c338febeb327f /libgloss | |
| parent | c8dc3fa0ba5543d69300040acabe751fc3ec7cb5 (diff) | |
| download | newlib-748970c8337eb286d816ac623c8ee097d4085c29.zip newlib-748970c8337eb286d816ac623c8ee097d4085c29.tar.gz newlib-748970c8337eb286d816ac623c8ee097d4085c29.tar.bz2 | |
MSP430: Word align __*_array_start symbols in sim linker scripts
__{preinit,init,fini}_array_start symbols must be word aligned in
linker scripts. If the section preceding the __*_array_start symbol
has an odd size, then a NULL byte will be present between the start
symbol and the .*_array section itself, when the section gets
automatically word-aligned.
This results in a branch to an invalid address when the CRT startup
code tries to run through the functions listed in the array sections.
>From de115144d05ecbaa82c9c737cc261715ca4b7d67 Mon Sep 17 00:00:00 2001
From: Jozef Lawrynowicz <jozef.l@mittosystems.com>
Date: Mon, 3 Aug 2020 19:09:46 +0100
Subject: [PATCH 1/2] MSP430: Word align __*_array_start symbols in sim linker
scripts
__{preinit,init,fini}_array_start symbols must be word aligned in
linker scripts. If the section preceding the __*_array_start symbol
has an odd size, then a NULL byte will be present between the start
symbol and the .*_array section itself, when the section gets
automatically word-aligned.
This results in a branch to an invalid address when the CRT startup
code tries to run through the functions listed in the array sections.
Diffstat (limited to 'libgloss')
| -rw-r--r-- | libgloss/msp430/msp430-sim.ld | 4 | ||||
| -rw-r--r-- | libgloss/msp430/msp430xl-sim.ld | 3 |
2 files changed, 7 insertions, 0 deletions
diff --git a/libgloss/msp430/msp430-sim.ld b/libgloss/msp430/msp430-sim.ld index fadd137..5c0e3b7 100644 --- a/libgloss/msp430/msp430-sim.ld +++ b/libgloss/msp430/msp430-sim.ld @@ -42,14 +42,18 @@ SECTIONS . = ALIGN(2); *(.rodata1) + . = ALIGN(2); KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) + . = ALIGN(2); PROVIDE (__preinit_array_start = .); KEEP (*(.preinit_array)) PROVIDE (__preinit_array_end = .); + . = ALIGN(2); PROVIDE (__init_array_start = .); KEEP (*(SORT(.init_array.*))) KEEP (*(.init_array)) PROVIDE (__init_array_end = .); + . = ALIGN(2); PROVIDE (__fini_array_start = .); KEEP (*(.fini_array)) KEEP (*(SORT(.fini_array.*))) diff --git a/libgloss/msp430/msp430xl-sim.ld b/libgloss/msp430/msp430xl-sim.ld index 125b7d8..5126e39 100644 --- a/libgloss/msp430/msp430xl-sim.ld +++ b/libgloss/msp430/msp430xl-sim.ld @@ -68,13 +68,16 @@ SECTIONS . = ALIGN(2); KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) + . = ALIGN(2); PROVIDE (__preinit_array_start = .); KEEP (*(.preinit_array)) PROVIDE (__preinit_array_end = .); + . = ALIGN(2); PROVIDE (__init_array_start = .); KEEP (*(SORT(.init_array.*))) KEEP (*(.init_array)) PROVIDE (__init_array_end = .); + . = ALIGN(2); PROVIDE (__fini_array_start = .); KEEP (*(.fini_array)) KEEP (*(SORT(.fini_array.*))) |