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| author | Claudiu Zissulescu <claziss@synopsys.com> | 2016-09-15 12:24:24 +0200 |
|---|---|---|
| committer | Claudiu Zissulescu <claziss@synopsys.com> | 2016-09-16 14:49:33 +0200 |
| commit | f807f43d7eba5bba3042554f9b3e884d71a68309 (patch) | |
| tree | ec9c600313b94d50ab2982fb20db1c256b799add /gas | |
| parent | 0a0df908277bc9c63ec546fb7cd15ea14ad4d9a0 (diff) | |
| download | gdb-f807f43d7eba5bba3042554f9b3e884d71a68309.zip gdb-f807f43d7eba5bba3042554f9b3e884d71a68309.tar.gz gdb-f807f43d7eba5bba3042554f9b3e884d71a68309.tar.bz2 | |
[ARC] Disassemble correctly extension instructions.
For each MAJOR-MINOR opcode tuple, we can have either a 3-operand, or
2-operand, or a single operand instruction format, depending on the
values present in i-field, and a-field.
The disassembler is reading the section containing the extension
instruction format and stores them in a table. Each table element
represents a linked list with encodings for a particular MAJOR-MINOR
tuple.
The current implementation checks only against the first element of
the list, hence, the issue.
This patch is walking the linked list until empty or finds an opcode
match. It also adds a test outlining the found problem.
opcodes/
2016-09-15 Claudiu Zissulescu <claziss@synopsys.com>
* arc-dis.c (find_format): Walk the linked list pointed by einsn.
gas/
2016-09-15 Claudiu Zissulescu <claziss@synopsys.com>
* testsuite/gas/arc/textinsnxop.d: New file.
* testsuite/gas/arc/textinsnxop.s: Likewise.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 5 | ||||
| -rw-r--r-- | gas/testsuite/gas/arc/textinsnxop.d | 12 | ||||
| -rw-r--r-- | gas/testsuite/gas/arc/textinsnxop.s | 10 |
3 files changed, 27 insertions, 0 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index c2e390a..8a4e15f 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,8 @@ +2016-09-15 Claudiu Zissulescu <claziss@synopsys.com> + + * testsuite/gas/arc/textinsnxop.d: New file. + * testsuite/gas/arc/textinsnxop.s: Likewise. + 2016-09-15 Jose E. Marchesi <jose.marchesi@oracle.com> * testsuite/gas/sparc/sparc.exp (gas_64_check): Run diff --git a/gas/testsuite/gas/arc/textinsnxop.d b/gas/testsuite/gas/arc/textinsnxop.d new file mode 100644 index 0000000..14556e6 --- /dev/null +++ b/gas/testsuite/gas/arc/textinsnxop.d @@ -0,0 +1,12 @@ +#objdump: -d + +.*: +file format .*arc.* + + +Disassembly of section .text: + +[0-9a-f]+ <start>: + 0: 3921 0080 insn1 r0,r1,r2 + 4: 382f 0061 insn2 r0,r1 + 8: 392f 407f insn3 r1 + c: 396f 403f insn4 diff --git a/gas/testsuite/gas/arc/textinsnxop.s b/gas/testsuite/gas/arc/textinsnxop.s new file mode 100644 index 0000000..be8111d --- /dev/null +++ b/gas/testsuite/gas/arc/textinsnxop.s @@ -0,0 +1,10 @@ + .extInstruction insn1, 7, 0x21, SUFFIX_NONE, SYNTAX_3OP + .extInstruction insn2, 7, 0x21, SUFFIX_NONE, SYNTAX_2OP + .extInstruction insn3, 7, 0x21, SUFFIX_NONE, SYNTAX_1OP + .extInstruction insn4, 7, 0x21, SUFFIX_NONE, SYNTAX_NOP + +start: + insn1 r0,r1,r2 + insn2 r0,r1 + insn3 r1 + insn4 |