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| author | Anton Kolesov <Anton.Kolesov@synopsys.com> | 2017-02-10 14:12:06 +0300 |
|---|---|---|
| committer | Anton Kolesov <Anton.Kolesov@synopsys.com> | 2017-03-28 21:36:35 +0300 |
| commit | eea787570f708e51048f812808e6cbd76fde6919 (patch) | |
| tree | b3df9e1ebf01db2652e0c1b99cab8b68e814eddb /gdb/doc/gdb.texinfo | |
| parent | 3be78afdeddd3ebf57eb0df8b029cf596f468c7a (diff) | |
| download | gdb-eea787570f708e51048f812808e6cbd76fde6919.zip gdb-eea787570f708e51048f812808e6cbd76fde6919.tar.gz gdb-eea787570f708e51048f812808e6cbd76fde6919.tar.bz2 | |
arc: Add disassembler helper
Add disassembler helper for GDB, that uses opcodes structure arc_instruction
and adds convenience functions to handle instruction operands. This interface
solves at least those problems with arc_instruction:
* Some instructions, like "push_s", have implicit operands which are not
directly present in arc_instruction.
* Operands of particular meaning, like branch/jump targets, have various
locations and meaning depending on type of branch/target.
* Access to operand value is abstracted into a separate function, so callee
code shouldn't bother if operand value is an immediate value or in a
register.
Testcases included in this commit are fairly limited - they test exclusively
branch instructions, something that will be used in software single stepping.
Most of the other parts of this disassembler helper are tested during prologue
analysis testing.
gdb/ChangeLog:
yyyy-mm-dd Anton Kolesov <anton.kolesov@synopsys.com>
* configure.tgt: Add arc-insn.o.
* arc-tdep.c (arc_delayed_print_insn): Make non-static.
(dump_arc_instruction_command): New function.
(arc_fprintf_disasm): Likewise.
(arc_disassemble_info): Likewise.
(arc_insn_get_operand_value): Likewise.
(arc_insn_get_operand_value_signed): Likewise.
(arc_insn_get_memory_base_reg): Likewise.
(arc_insn_get_memory_offset): Likewise.
(arc_insn_get_branch_target): Likewise.
(arc_insn_dump): Likewise.
(arc_insn_get_linear_next_pc): Likewise.
* arc-tdep.h (arc_delayed_print_insn): Add function declaration.
(arc_disassemble_info): Likewise.
(arc_insn_get_branch_target): Likewise.
(arc_insn_get_linear_next_pc): Likewise.
* NEWS: Mention new "maint print arc arc-instruction".
gdb/doc/ChangeLog:
yyyy-mm-dd Anton Kolesov <anton.kolesov@synopsys.com>
* gdb.texinfo (Synopsys ARC): Add "maint print arc arc-instruction".
gdb/testsuite/ChangeLog:
yyyy-mm-dd Anton Kolesov <anton.kolesov@synopsys.com>
* gdb.arch/arc-decode-insn.S: New file.
* gdb.arch/arc-decode-insn.exp: Likewise.
Diffstat (limited to 'gdb/doc/gdb.texinfo')
| -rw-r--r-- | gdb/doc/gdb.texinfo | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index 90785dc..7e2fc81 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -22105,6 +22105,10 @@ messages. @kindex show debug arc Show the level of ARC specific debugging in operation. +@item maint print arc arc-instruction @var{address} +@kindex maint print arc arc-instruction +Print internal disassembler information about instruction at a given address. + @end table @node ARM |