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| author | Yao Qi <yao.qi@linaro.org> | 2015-07-29 12:43:10 +0100 |
|---|---|---|
| committer | Yao Qi <yao.qi@linaro.org> | 2015-07-29 12:43:10 +0100 |
| commit | cc9f16aa882eb22cb2128c5eb8237fd453ab2988 (patch) | |
| tree | 1731fb259bc51d6759f4710fc0081dcd6a3d938f /gdb/target.h | |
| parent | eb1a79028c63ca565850c5d64ae60193f90cd841 (diff) | |
| download | gdb-cc9f16aa882eb22cb2128c5eb8237fd453ab2988.zip gdb-cc9f16aa882eb22cb2128c5eb8237fd453ab2988.tar.gz gdb-cc9f16aa882eb22cb2128c5eb8237fd453ab2988.tar.bz2 | |
PR record/18691: Fix fails in solib-precsave.exp
We see the following regressions in testing on x86_64-linux,
reverse-step^M
Cannot access memory at address 0x2aaaaaed26c0^M
(gdb) FAIL: gdb.reverse/solib-precsave.exp: reverse-step into solib function one
when GDB reverse step into a function, GDB wants to skip prologue so
it requests TARGET_OBJECT_CODE_MEMORY to read some code memory in
memory_xfer_partial_1. However in dcache_read_memory_partial, the object
becomes TARGET_OBJECT_MEMORY
return ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL,
myaddr, NULL, memaddr, len,
xfered_len);
in reverse debugging, ops->to_xfer_partial is record_full_core_xfer_partial
and it will return TARGET_XFER_E_IO because it can't find any records.
The test fails.
At this moment, the delegate relationship is like
dcache -> record-core -> core -> exec
and we want to GDB read memory across targets, which means if the
requested memory isn't found in record-core, GDB can read memory from
core, and exec even further if needed. I find raw_memory_xfer_partial
is exactly what I want.
gdb:
2015-07-29 Yao Qi <yao.qi@linaro.org>
PR record/18691
* dcache.c (dcache_read_memory_partial): Call
raw_memory_xfer_partial.
* target.c (raw_memory_xfer_partial): Make it non-static.
* target.h (raw_memory_xfer_partial): Declare.
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 32234f7..cad5c52 100644 --- a/gdb/target.h +++ b/gdb/target.h @@ -265,6 +265,11 @@ typedef enum target_xfer_status ULONGEST len, ULONGEST *xfered_len); +enum target_xfer_status + raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, + const gdb_byte *writebuf, ULONGEST memaddr, + LONGEST len, ULONGEST *xfered_len); + /* Request that OPS transfer up to LEN addressable units of the target's OBJECT. When reading from a memory object, the size of an addressable unit is architecture dependent and can be found using |