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MIPS/opcodes: Fix alias annotation for branch instructions
Correct issues with INSN2_ALIAS annotation for branch instructions: - regular MIPS BEQZ/L and BNEZ/L assembly instructions are idioms for BEQ/L and BNE/L respectively with the `rs' operand equal to $0, - microMIPS 32-bit BEQZ and BNEZ assembly instructions are idioms for BEQ and BNE respectively with the `rt' operand equal to $0, - regular MIPS BAL assembly instruction is an idiom for architecture levels of up to the MIPSr5 ISA and a machine instruction on its own from the MIPSr6 ISA up. Add missing annotation to BEQZ/L and BNEZ/L accordingly then and add a new entry for BAL for the MIPSr6 ISA, correcting a disassembly bug: $ mips-linux-gnu-objdump -m mips:isa64r6 -M no-aliases -d bal.o bal.o: file format elf32-tradlittlemips Disassembly of section .text: 00000000 <foo>: 0: 04110000 0x4110000 ... $ Add test cases accordingly. Parts for regular MIPS BEQZ/L and BNEZ/L instructions from Sagar Patel. 2022-03-06 Maciej W. Rozycki <macro@orcam.me.uk> binutils/ * testsuite/binutils-all/mips/mips1-branch-alias.d: New test. * testsuite/binutils-all/mips/mips1-branch-noalias.d: New test. * testsuite/binutils-all/mips/mips2-branch-alias.d: New test. * testsuite/binutils-all/mips/mips2-branch-noalias.d: New test. * testsuite/binutils-all/mips/mips32r6-branch-alias.d: New test. * testsuite/binutils-all/mips/mips32r6-branch-noalias.d: New test. * testsuite/binutils-all/mips/micromips-branch-alias.d: New test. * testsuite/binutils-all/mips/micromips-branch-noalias.d: New test. * testsuite/binutils-all/mips/mips-branch-alias.s: New test source. * testsuite/binutils-all/mips/micromips-branch-alias.s: New test source. * testsuite/binutils-all/mips/mips.exp: Run the new tests. 2022-03-06 Sagar Patel <sagarmp@cs.unc.edu> Maciej W. Rozycki <macro@orcam.me.uk> opcodes/ * mips-opc.c (mips_builtin_opcodes): Fix INSN2_ALIAS annotation for "bal", "beqz", "beqzl", "bnez" and "bnezl" instructions. * micromips-opc.c (micromips_opcodes): Likewise for "beqz" and "bnez" instructions.
This commit is contained in:
Maciej W. Rozycki
@ -1,3 +1,22 @@
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2021-03-06 Maciej W. Rozycki <macro@orcam.me.uk>
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* testsuite/binutils-all/mips/mips1-branch-alias.d: New test.
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* testsuite/binutils-all/mips/mips1-branch-noalias.d: New test.
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* testsuite/binutils-all/mips/mips2-branch-alias.d: New test.
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* testsuite/binutils-all/mips/mips2-branch-noalias.d: New test.
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* testsuite/binutils-all/mips/mips32r6-branch-alias.d: New test.
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* testsuite/binutils-all/mips/mips32r6-branch-noalias.d: New
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test.
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* testsuite/binutils-all/mips/micromips-branch-alias.d: New
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test.
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* testsuite/binutils-all/mips/micromips-branch-noalias.d: New
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test.
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* testsuite/binutils-all/mips/mips-branch-alias.s: New test
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source.
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* testsuite/binutils-all/mips/micromips-branch-alias.s: New test
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source.
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* testsuite/binutils-all/mips/mips.exp: Run the new tests.
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2022-03-04 Simon Marchi <simon.marchi@polymtl.ca>
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* readelf.c (process_dynamic_section): Fix indentation.
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@ -0,0 +1,17 @@
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#PROG: objcopy
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#objdump: -d --prefix-addresses --show-raw-insn
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#name: microMIPS branch instruction alias disassembly
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#source: micromips-branch-alias.s
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.*: +file format .*mips.*
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Disassembly of section \.text:
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[0-9a-f]+ <[^>]*> 9400 0000 b [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 4040 0000 b [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 40e0 0000 bc [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 9401 0000 beqz at,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> b401 0000 bnez at,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 4060 0000 bal [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 4260 0000 bals [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 0000 0000 nop
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\.\.\.
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@ -0,0 +1,17 @@
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.text
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.set mips32r3
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.set noat
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.set noreorder
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.set micromips
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foo:
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beq $0, $0, . + 4
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bgez $0, . + 4
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beqzc $0, . + 4
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beqz $1, . + 4
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bnez $1, . + 4
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bgezal $0, . + 4
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bgezals $0, . + 4
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# Force some (non-delay-slot) zero bytes, to make 'objdump' print ...
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.align 4, 0
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.space 16
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@ -0,0 +1,17 @@
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#PROG: objcopy
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#objdump: -M no-aliases -d --prefix-addresses --show-raw-insn
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#name: microMIPS branch canonical alias disassembly
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#source: micromips-branch-alias.s
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.*: +file format .*mips.*
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Disassembly of section \.text:
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[0-9a-f]+ <[^>]*> 9400 0000 beq zero,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 4040 0000 bgez zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 40e0 0000 beqzc zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 9401 0000 beq at,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> b401 0000 bne at,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 4060 0000 bgezal zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 4260 0000 bgezals zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 0000 0000 sll zero,zero,0x0
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\.\.\.
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18
binutils/testsuite/binutils-all/mips/mips-branch-alias.s
Normal file
18
binutils/testsuite/binutils-all/mips/mips-branch-alias.s
Normal file
@ -0,0 +1,18 @@
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.text
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.set noat
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.set noreorder
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.set mips2
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foo:
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beq $0, $0, . + 4
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bgez $0, . + 4
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bgezal $0, . + 4
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bltzal $0, . + 4
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beqz $1, . + 4
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bnez $1, . + 4
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beqzl $1, . + 4
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bnezl $1, . + 4
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# Force some (non-delay-slot) zero bytes, to make 'objdump' print ...
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.align 4, 0
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.space 16
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@ -238,6 +238,14 @@ run_dump_test_o32 "mips16-extend-insn" noarch
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run_dump_test_o32 "mips16e2-extend-insn" noarch
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run_dump_test_o32 "mips16-alias" noarch
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run_dump_test_o32 "mips16-noalias" noarch
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run_dump_test_o32 "mips1-branch-alias"
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run_dump_test_o32 "mips1-branch-noalias"
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run_dump_test_o32 "mips2-branch-alias"
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run_dump_test_o32 "mips2-branch-noalias"
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run_dump_test_o32 "mips32r6-branch-alias"
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run_dump_test_o32 "mips32r6-branch-noalias"
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run_dump_test_o32 "micromips-branch-alias"
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run_dump_test_o32 "micromips-branch-noalias"
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run_dump_test_o32 "mips-note-2"
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run_dump_test_n32 "mips-note-2-n32"
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17
binutils/testsuite/binutils-all/mips/mips1-branch-alias.d
Normal file
17
binutils/testsuite/binutils-all/mips/mips1-branch-alias.d
Normal file
@ -0,0 +1,17 @@
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#PROG: objcopy
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#objdump: -m mips:3000 -d --prefix-addresses --show-raw-insn
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#name: MIPS1 branch instruction alias disassembly
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#source: mips-branch-alias.s
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.*: +file format .*mips.*
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Disassembly of section \.text:
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[0-9a-f]+ <[^>]*> 10000000 b [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04010000 b [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04110000 bal [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04100000 bltzal zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 10200000 beqz at,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 14200000 bnez at,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 50200000 0x50200000
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[0-9a-f]+ <[^>]*> 54200000 0x54200000
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\.\.\.
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17
binutils/testsuite/binutils-all/mips/mips1-branch-noalias.d
Normal file
17
binutils/testsuite/binutils-all/mips/mips1-branch-noalias.d
Normal file
@ -0,0 +1,17 @@
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#PROG: objcopy
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#objdump: -M no-aliases -m mips:3000 -d --prefix-addresses --show-raw-insn
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#name: MIPS1 branch canonical alias disassembly
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#source: mips-branch-alias.s
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.*: +file format .*mips.*
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Disassembly of section \.text:
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[0-9a-f]+ <[^>]*> 10000000 beq zero,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04010000 bgez zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04110000 bgezal zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04100000 bltzal zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 10200000 beq at,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 14200000 bne at,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 50200000 0x50200000
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[0-9a-f]+ <[^>]*> 54200000 0x54200000
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\.\.\.
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18
binutils/testsuite/binutils-all/mips/mips2-branch-alias.d
Normal file
18
binutils/testsuite/binutils-all/mips/mips2-branch-alias.d
Normal file
@ -0,0 +1,18 @@
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#PROG: objcopy
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#objdump: -m mips:6000 -d --prefix-addresses --show-raw-insn
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#name: MIPS2 branch instruction alias disassembly
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#source: mips-branch-alias.s
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.*: +file format .*mips.*
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Disassembly of section \.text:
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[0-9a-f]+ <[^>]*> 10000000 b [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04010000 b [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04110000 bal [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04100000 bltzal zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 10200000 beqz at,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 14200000 bnez at,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 50200000 beqzl at,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 54200000 bnezl at,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 00000000 nop
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\.\.\.
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18
binutils/testsuite/binutils-all/mips/mips2-branch-noalias.d
Normal file
18
binutils/testsuite/binutils-all/mips/mips2-branch-noalias.d
Normal file
@ -0,0 +1,18 @@
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#PROG: objcopy
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#objdump: -M no-aliases -m mips:6000 -d --prefix-addresses --show-raw-insn
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#name: MIPS2 branch canonical alias disassembly
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#source: mips-branch-alias.s
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.*: +file format .*mips.*
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Disassembly of section \.text:
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[0-9a-f]+ <[^>]*> 10000000 beq zero,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04010000 bgez zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04110000 bgezal zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04100000 bltzal zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 10200000 beq at,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 14200000 bne at,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 50200000 beql at,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 54200000 bnel at,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 00000000 sll zero,zero,0x0
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\.\.\.
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17
binutils/testsuite/binutils-all/mips/mips32r6-branch-alias.d
Normal file
17
binutils/testsuite/binutils-all/mips/mips32r6-branch-alias.d
Normal file
@ -0,0 +1,17 @@
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#PROG: objcopy
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#objdump: -m mips:isa32r6 -d --prefix-addresses --show-raw-insn
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#name: MIPS32r6 branch instruction alias disassembly
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#source: mips-branch-alias.s
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.*: +file format .*mips.*
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Disassembly of section \.text:
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[0-9a-f]+ <[^>]*> 10000000 b [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04010000 b [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04110000 bal [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04100000 nal
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[0-9a-f]+ <[^>]*> 10200000 beqz at,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 14200000 bnez at,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 50200000 0x50200000
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[0-9a-f]+ <[^>]*> 54200000 0x54200000
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\.\.\.
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@ -0,0 +1,17 @@
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#PROG: objcopy
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#objdump: -M no-aliases -m mips:isa32r6 -d --prefix-addresses --show-raw-insn
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#name: MIPS32r6 branch canonical alias disassembly
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#source: mips-branch-alias.s
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.*: +file format .*mips.*
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Disassembly of section \.text:
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[0-9a-f]+ <[^>]*> 10000000 beq zero,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04010000 bgez zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04110000 bal [0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 04100000 nal
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[0-9a-f]+ <[^>]*> 10200000 beq at,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 14200000 bne at,zero,[0-9a-f]+ <[^>]*>
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[0-9a-f]+ <[^>]*> 50200000 0x50200000
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[0-9a-f]+ <[^>]*> 54200000 0x54200000
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\.\.\.
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@ -1,3 +1,11 @@
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2022-03-06 Sagar Patel <sagarmp@cs.unc.edu>
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Maciej W. Rozycki <macro@orcam.me.uk>
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* mips-opc.c (mips_builtin_opcodes): Fix INSN2_ALIAS annotation
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for "bal", "beqz", "beqzl", "bnez" and "bnezl" instructions.
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* micromips-opc.c (micromips_opcodes): Likewise for "beqz" and
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"bnez" instructions.
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2022-02-17 Nick Clifton <nickc@redhat.com>
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* po/sr.po: Updated Serbian translation.
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@ -373,7 +373,7 @@ const struct mips_opcode micromips_opcodes[] =
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{"bc2tl", "p", 0, (int) M_BC2TL, INSN_MACRO, 0, I1, 0, 0 },
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{"bc2tl", "N,p", 0, (int) M_BC2TL, INSN_MACRO, 0, I1, 0, 0 },
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{"beqz", "md,mE", 0x8c00, 0xfc00, RD_1|CBD, 0, I1, 0, 0 },
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{"beqz", "s,p", 0x94000000, 0xffe00000, RD_1|CBD, 0, I1, 0, 0 },
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{"beqz", "s,p", 0x94000000, 0xffe00000, RD_1|CBD, INSN2_ALIAS, I1, 0, 0 },
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{"beqzl", "s,p", 0, (int) M_BEQL, INSN_MACRO, 0, I1, 0, 0 },
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{"beq", "md,mz,mE", 0x8c00, 0xfc00, RD_1|CBD, 0, I1, 0, 0 }, /* beqz */
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{"beq", "mz,md,mE", 0x8c00, 0xfc00, RD_2|CBD, 0, I1, 0, 0 }, /* beqz */
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@ -431,7 +431,7 @@ const struct mips_opcode micromips_opcodes[] =
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{"bltzals", "s,p", 0x42200000, 0xffe00000, RD_1|WR_31|CBD, BD16, I1, 0, 0 },
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{"bltzall", "s,p", 0, (int) M_BLTZALL, INSN_MACRO, 0, I1, 0, 0 },
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{"bnez", "md,mE", 0xac00, 0xfc00, RD_1|CBD, 0, I1, 0, 0 },
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{"bnez", "s,p", 0xb4000000, 0xffe00000, RD_1|CBD, 0, I1, 0, 0 },
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{"bnez", "s,p", 0xb4000000, 0xffe00000, RD_1|CBD, INSN2_ALIAS, I1, 0, 0 },
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{"bnezl", "s,p", 0, (int) M_BNEL, INSN_MACRO, 0, I1, 0, 0 },
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{"bne", "md,mz,mE", 0xac00, 0xfc00, RD_1|CBD, 0, I1, 0, 0 }, /* bnez */
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{"bne", "mz,md,mE", 0xac00, 0xfc00, RD_2|CBD, 0, I1, 0, 0 }, /* bnez */
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@ -460,7 +460,8 @@ const struct mips_opcode mips_builtin_opcodes[] =
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{"move", "d,s", 0x00000021, 0xfc1f07ff, WR_1|RD_2, INSN2_ALIAS, I1, 0, 0 },/* addu */
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{"b", "p", 0x10000000, 0xffff0000, UBD, INSN2_ALIAS, I1, 0, 0 },/* beq 0,0 */
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{"b", "p", 0x04010000, 0xffff0000, UBD, INSN2_ALIAS, I1, 0, 0 },/* bgez 0 */
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{"bal", "p", 0x04110000, 0xffff0000, WR_31|UBD, INSN2_ALIAS, I1, 0, 0 },/* bgezal 0*/
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{"bal", "p", 0x04110000, 0xffff0000, WR_31|UBD, INSN2_ALIAS, I1, 0, I37 }, /* bgezal 0 */
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{"bal", "p", 0x04110000, 0xffff0000, WR_31|UBD, 0, I37, 0, 0 },
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{"bc", "+'", 0xc8000000, 0xfc000000, NODS, 0, I37, 0, 0 },
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{"balc", "+'", 0xe8000000, 0xfc000000, WR_31|NODS, 0, I37, 0, 0 },
|
||||
{"lapc", "s,-A", 0xec000000, 0xfc180000, WR_1, RD_pc, I37, 0, 0 },
|
||||
@ -733,8 +734,8 @@ const struct mips_opcode mips_builtin_opcodes[] =
|
||||
{"bc1tl", "N,p", 0x45030000, 0xffe30000, RD_CC|CBL|FP_S, 0, I4_32, 0, I37 },
|
||||
/* bc2* are at the bottom of the table. */
|
||||
/* bc3* are at the bottom of the table. */
|
||||
{"beqz", "s,p", 0x10000000, 0xfc1f0000, RD_1|CBD, 0, I1, 0, 0 },
|
||||
{"beqzl", "s,p", 0x50000000, 0xfc1f0000, RD_1|CBL, 0, I2|T3, 0, I37 },
|
||||
{"beqz", "s,p", 0x10000000, 0xfc1f0000, RD_1|CBD, INSN2_ALIAS, I1, 0, 0 },
|
||||
{"beqzl", "s,p", 0x50000000, 0xfc1f0000, RD_1|CBL, INSN2_ALIAS, I2|T3, 0, I37 },
|
||||
{"beq", "s,t,p", 0x10000000, 0xfc000000, RD_1|RD_2|CBD, 0, I1, 0, 0 },
|
||||
{"beq", "s,I,p", 0, (int) M_BEQ_I, INSN_MACRO, 0, I1, 0, 0 },
|
||||
{"beql", "s,t,p", 0x50000000, 0xfc000000, RD_1|RD_2|CBL, 0, I2|T3, 0, I37 },
|
||||
@ -784,8 +785,8 @@ const struct mips_opcode mips_builtin_opcodes[] =
|
||||
{"bltzal", "s,p", 0x04100000, 0xfc1f0000, RD_1|WR_31|CBD, 0, I1, 0, I37 },
|
||||
{"nal", "", 0x04100000, 0xffffffff, WR_31|CBD, 0, I1, 0, 0 }, /* bltzal 0,.+4 */
|
||||
{"bltzall", "s,p", 0x04120000, 0xfc1f0000, RD_1|WR_31|CBL, 0, I2|T3, 0, I37 },
|
||||
{"bnez", "s,p", 0x14000000, 0xfc1f0000, RD_1|CBD, 0, I1, 0, 0 },
|
||||
{"bnezl", "s,p", 0x54000000, 0xfc1f0000, RD_1|CBL, 0, I2|T3, 0, I37 },
|
||||
{"bnez", "s,p", 0x14000000, 0xfc1f0000, RD_1|CBD, INSN2_ALIAS, I1, 0, 0 },
|
||||
{"bnezl", "s,p", 0x54000000, 0xfc1f0000, RD_1|CBL, INSN2_ALIAS, I2|T3, 0, I37 },
|
||||
{"bne", "s,t,p", 0x14000000, 0xfc000000, RD_1|RD_2|CBD, 0, I1, 0, 0 },
|
||||
{"bne", "s,I,p", 0, (int) M_BNE_I, INSN_MACRO, 0, I1, 0, 0 },
|
||||
{"bnel", "s,t,p", 0x54000000, 0xfc000000, RD_1|RD_2|CBL, 0, I2|T3, 0, I37 },
|
||||
|
||||
Reference in New Issue
Block a user