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| author | Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com> | 2015-01-28 15:01:50 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2015-01-28 15:06:48 +1030 |
| commit | cc9ad334a71b0c032f711e86885fb73821f3be16 (patch) | |
| tree | e721067748cda338595b230ab0557039b65d94f4 /ld/ldlang.h | |
| parent | e5fe4957b4513015b40472086f22cf8723b95773 (diff) | |
| download | gdb-cc9ad334a71b0c032f711e86885fb73821f3be16.zip gdb-cc9ad334a71b0c032f711e86885fb73821f3be16.tar.gz gdb-cc9ad334a71b0c032f711e86885fb73821f3be16.tar.bz2 | |
Allow symbols in MEMORY region specification
This patch fixes PR 4643 by allowing symbols in the LENGTH and ORIGIN
fields of MEMORY regions. Previously, only constants and constant
expressions are allowed.
For the AVR target, this helps define memory constraints more
accurately (per device), without having to create a ton of device
specific linker scripts.
ld/
PR 4643
* ldexp.c (fold_name): Fold LENGTH only after
lang_first_phase_enum.
* ldgram.y (memory_spec): Don't evaluate ORIGIN and LENGTH
rightaway.
* ldlang.h (struct memory_region_struct): Add origin_exp and
length_exp fields.
* ldlang.c (lang_do_memory_regions): New.
(lang_memory_region_lookup): Initialize origin_exp and
length_exp fields.
(lang_process): Call lang_do_memory_regions.
ld/testsuite/
* ld-scripts/memory.t: Define new symbol tred.
* ld-scripts/memory_sym.t: New.
* ld-scripts/script.exp: Perform MEMORY with symbols test, and
conditionally check values of linker symbols.
Diffstat (limited to 'ld/ldlang.h')
| -rw-r--r-- | ld/ldlang.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/ld/ldlang.h b/ld/ldlang.h index 48d7e4e..69d21a7 100644 --- a/ld/ldlang.h +++ b/ld/ldlang.h @@ -55,8 +55,10 @@ typedef struct memory_region_struct { lang_memory_region_name name_list; struct memory_region_struct *next; + union etree_union *origin_exp; bfd_vma origin; bfd_size_type length; + union etree_union *length_exp; bfd_vma current; union lang_statement_union *last_os; flagword flags; |