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| author | Yao Qi <yao@codesourcery.com> | 2013-11-01 12:26:10 +0800 |
|---|---|---|
| committer | Yao Qi <yao@codesourcery.com> | 2013-11-24 14:56:49 +0800 |
| commit | 29453a14557af65ed7a0867722b0145bb9f0e0c2 (patch) | |
| tree | b73a98586473bb5a36387711bcf71778b27bab20 /gdb/target.h | |
| parent | 0fb14d8ffde0940e0b55d529c50a5d424b763b13 (diff) | |
| download | gdb-29453a14557af65ed7a0867722b0145bb9f0e0c2.zip gdb-29453a14557af65ed7a0867722b0145bb9f0e0c2.tar.gz gdb-29453a14557af65ed7a0867722b0145bb9f0e0c2.tar.bz2 | |
set/show code-cache
Similar to stack cache, in this patch, we add
TARGET_OBJECT_CODE_MEMORY to read code from target and add a new
option "set code-cache on|off" to optimize code accesses by
using the target memory cache.
In V4:
- Remove "without affecting correctness" from NEWS and doc.
- Replace "ON" with "on" in doc.
- "access" -> "accesses".
In V3:
- Rename functions and variables.
- Update command help, doc and NEWS entry.
- Invalidate cache on option transitions, to align with
the behaviour of "stack-cache". Since cache invalidation is
transparent to users, users don't know option "stack-cache"
transitions cause code cache invalidation.
V2 was reviewed by Doug. There are some changes in V3, so I post it
here.
gdb:
2013-11-24 Yao Qi <yao@codesourcery.com>
* NEWS: Add note on new "set code-cache" option.
* target-dcache.c (code_cache_enabled_1): New variable.
(code_cache_enabled): New variable.
(show_code_cache, set_code_cache): New function.
(code_cache_enabled_p): New function.
(_initialize_target_dcache): Register command.
* target-dcache.h (code_cache_enabled_p): Declare.
* target.c (memory_xfer_partial_1):Handle
TARGET_OBJECT_CODE_MEMORY and code_cache_enabled.
(target_read_code): New function.
* target.h (enum target_object) <TARGET_OBJECT_CODE_MEMORY>:
New.
(target_read_code): Declare.
gdb/doc:
2013-11-24 Yao Qi <yao@codesourcery.com>
* gdb.texinfo (Caching Remote Data): Document new
"set/show stack-cache" option.
Diffstat (limited to 'gdb/target.h')
| -rw-r--r-- | gdb/target.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gdb/target.h b/gdb/target.h index 646907a..890171d 100644 --- a/gdb/target.h +++ b/gdb/target.h @@ -145,6 +145,9 @@ enum target_object if it is not in a region marked as such, since it is known to be "normal" RAM. */ TARGET_OBJECT_STACK_MEMORY, + /* Memory known to be part of the target code. This is cached even + if it is not in a region marked as such. */ + TARGET_OBJECT_CODE_MEMORY, /* Kernel Unwind Table. See "ia64-tdep.c". */ TARGET_OBJECT_UNWIND_TABLE, /* Transfer auxilliary vector. */ @@ -1050,6 +1053,8 @@ extern int target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, extern int target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len); +extern int target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len); + extern int target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len); |