diff options
Diffstat (limited to 'decoder/source/i_dec/trc_i_decode.cpp')
| -rw-r--r-- | decoder/source/i_dec/trc_i_decode.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/decoder/source/i_dec/trc_i_decode.cpp b/decoder/source/i_dec/trc_i_decode.cpp index 0e05895..11b70a3 100644 --- a/decoder/source/i_dec/trc_i_decode.cpp +++ b/decoder/source/i_dec/trc_i_decode.cpp @@ -36,6 +36,22 @@ #include "i_dec/trc_i_decode.h" #include "i_dec/trc_idec_arminst.h" +#include <cstdlib> + +TrcIDecode::TrcIDecode() : + aa64_err_bad_opcode(false) +{ +} + +void TrcIDecode::envSetAA64_errOnBadOpcode() +{ + char* env_var = NULL; + + if ((env_var = getenv(OCSD_ENV_ERR_ON_AA64_BAD_OPCODE)) != NULL) + setAA64_errOnBadOpcode(true); +} + + ocsd_err_t TrcIDecode::DecodeInstruction(ocsd_instr_info *instr_info) { ocsd_err_t err = OCSD_OK; @@ -133,6 +149,10 @@ ocsd_err_t TrcIDecode::DecodeA64(ocsd_instr_info *instr_info, struct decode_info instr_info->next_isa = instr_info->isa; // assume same ISA instr_info->is_link = 0; + // check for invalid opcode - top 16 bits cannot be 0x0000. + if (aa64_err_bad_opcode && !(instr_info->opcode & 0xFFFF0000)) + return OCSD_ERR_INVALID_OPCODE; + if(inst_A64_is_indirect_branch_link(instr_info->opcode, &instr_info->is_link, info)) { instr_info->type = OCSD_INSTR_BR_INDIRECT; |