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Bug #9336
closedMicroTESK is not able to disassemble euclid binary (RISC-V)
Start date:
10/18/2018
Due date:
% Done:
0%
Estimated time:
Detected in build:
svn
Platform:
Published in build:
2.4.44
Description
Analyzing file: ./euclid_0000.bin... Error: Unrecognized instruction encoding: 32'b00000001100000000000000001101111 Error: Failed to disassemble ./euclid_0000.bin Created file: ./euclid_0000.bin.smt2
Updated by Alexander Protsenko about 6 years ago
00000001100000000000000001101111
isimm[20|10:1|11|19:12] rd 1101111 JAL
(page 104 of https://forge.ispras.ru/projects/microtesk-riscv/repository/revisions/master/entry/microtesk-riscv/docs/riscv-spec-v2.2.pdf)
00000001100000000000
is a 20-bit immediate;00000
is GPR [0];1101111
is JAL opcode.
20-bit immediate (normal order of bits): 00000000000000001100 = 0x0000c = 12
Updated by Alexander Kamkin about 6 years ago
Generation of the instruction decoder fails:
Warning: Failed to construct decoder for jal. Unrecognized field: jump_imm20<19..19> Warning: Failed to construct decoder for jal. Unrecognized field: jump_imm20<9..0> Warning: Failed to construct decoder for jal. Unrecognized field: jump_imm20<10..10> Warning: Failed to construct decoder for jal. Unrecognized field: jump_imm20<18..11> Warning: Failed to construct decoder for jal. Undecoded arguments: [imm]
Updated by Alexander Kamkin about 6 years ago
StbDecoder (line 169):
if (ExprUtils.isValue(field)) { // Constant (treated as an OPC). buildOpcCheck(stConstructor, group, field); } else if (isImmediateArgument(field)) { // Image of an immediate value. buildImmediateArgument(stConstructor, group, field); } else if (isImmediateArgumentField(field)) { // Image of an immediate value's part. buildImmediateArgumentField(stConstructor, group, field); } else if (isArgumentImage(field)) { // Image of an addressing mode / operation (argument). buildArgumentImage(stConstructor, group, field); } else if (isInstanceImage(field)) { // Image of an addressing mode / operation (instance). buildInstanceImage(st, stConstructor, group, field); } else { reportError("Unrecognized field: %s", field); }
Updated by Alexander Kamkin about 6 years ago
- Status changed from New to Resolved
Updated by Alexander Kamkin about 6 years ago
- Status changed from Resolved to Closed
- Published in build set to 2.4.44
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