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| author | Sergio Durigan Junior <sergiodj@redhat.com> | 2013-06-30 00:35:39 +0000 |
|---|---|---|
| committer | Sergio Durigan Junior <sergiodj@redhat.com> | 2013-06-30 00:35:39 +0000 |
| commit | e82839d425857fb5c30ec01faab12263baddfd99 (patch) | |
| tree | fd0c52a3161470bcf3820db6e387b1d6b2f64945 /gdb/ia64-linux-tdep.c | |
| parent | 297ad641370a57108fdbb64f8db4c9f1b38b83c3 (diff) | |
| download | gdb-e82839d425857fb5c30ec01faab12263baddfd99.zip gdb-e82839d425857fb5c30ec01faab12263baddfd99.tar.gz gdb-e82839d425857fb5c30ec01faab12263baddfd99.tar.bz2 | |
This patch implements the support for SystemTap SDT probes on IA-64.
Joel Brobecker reported a bug which was happening because of the
"Improved linker-debugger interface", by Gary Benson, when tested on
IA-64 with rhES5. The message is:
<http://sourceware.org/ml/gdb-patches/2013-06/msg00745.html>
The failure happened because GDB was trying to parse the probes'
operands using only the generic parser (implemented on stap-probe.c),
because the arch-specific parser was not implemented. Thus, I am
committing the following changes which solve the bug.
2013-06-29 Sergio Durigan Junior <sergiodj@redhat.com>
* ia64-linux-tdep.c: Include <ctype.h>.
(ia64_linux_stap_is_single_operand): New function.
(ia64_linux_init_abi): Initialize SystemTap related attributes.
Diffstat (limited to 'gdb/ia64-linux-tdep.c')
| -rw-r--r-- | gdb/ia64-linux-tdep.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gdb/ia64-linux-tdep.c b/gdb/ia64-linux-tdep.c index 35ee4e2..d1eb529 100644 --- a/gdb/ia64-linux-tdep.c +++ b/gdb/ia64-linux-tdep.c @@ -27,6 +27,8 @@ #include "symtab.h" #include "linux-tdep.h" +#include <ctype.h> + /* The sigtramp code is in a non-readable (executable-only) region of memory called the ``gate page''. The addresses in question were determined by examining the system headers. They are @@ -118,6 +120,17 @@ ia64_linux_write_pc (struct regcache *regcache, CORE_ADDR pc) regcache_cooked_write_unsigned (regcache, IA64_GR10_REGNUM, 0); } +/* Implementation of `gdbarch_stap_is_single_operand', as defined in + gdbarch.h. */ + +static int +ia64_linux_stap_is_single_operand (struct gdbarch *gdbarch, const char *s) +{ + return ((isdigit (*s) && s[1] == '[' && s[2] == 'r') /* Displacement. */ + || *s == 'r' /* Register value. */ + || isdigit (*s)); /* Literal number. */ +} + static void ia64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { @@ -142,6 +155,14 @@ ia64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) /* Enable TLS support. */ set_gdbarch_fetch_tls_load_module_address (gdbarch, svr4_fetch_objfile_link_map); + + /* SystemTap related. */ + set_gdbarch_stap_register_prefix (gdbarch, "r"); + set_gdbarch_stap_register_indirection_prefix (gdbarch, "["); + set_gdbarch_stap_register_indirection_suffix (gdbarch, "]"); + set_gdbarch_stap_gdb_register_prefix (gdbarch, "r"); + set_gdbarch_stap_is_single_operand (gdbarch, + ia64_linux_stap_is_single_operand); } /* Provide a prototype to silence -Wmissing-prototypes. */ |