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bug fix
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Browse source
This commit is contained in:
tinebp 2025-06-16 01:51:49 -07:00
parent e9f03e5565
commit 12ba47ef26
1 changed files with 25 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

39
sim/simx/execute.cpp
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@ -458,24 +458,29 @@ instr_trace_t* Emulator::execute(const Instr &instr, uint32_t wid, uint64_t uuid
if (is_w_enabled && mdvArgs.is_w) {
auto dividen = rs1_data[t].i32;
auto divisor = rs2_data[t].i32;
int32_t largest_negative = 0x80000000;
int32_t quotient;
if (divisor != 0){
quotient = dividen / divisor;
} else {
if (divisor == 0){
quotient = -1;
} else if (dividen == largest_negative && divisor == -1) {
quotient = dividen;
} else {
quotient = dividen / divisor;
}
rd_data[t].i = sext((uint64_t)quotient, 32);
} else {
auto dividen = rs1_data[t].i;
auto divisor = rs2_data[t].i;
auto largest_negative = WordI(1) << (XLEN-1);
WordI quotient;
if (divisor == 0) {
rd_data[t].i = -1;
quotient = -1;
} else if (dividen == largest_negative && divisor == -1) {
rd_data[t].i = dividen;
quotient = dividen;
} else {
rd_data[t].i = dividen / divisor;
quotient = dividen / divisor;
}
rd_data[t].i = quotient;
}
}
} break;
@ -496,11 +501,13 @@ instr_trace_t* Emulator::execute(const Instr &instr, uint32_t wid, uint64_t uuid
} else {
auto dividen = rs1_data[t].u;
auto divisor = rs2_data[t].u;
Word quotient;
if (divisor != 0) {
rd_data[t].i = dividen / divisor;
quotient = dividen / divisor;
} else {
rd_data[t].i = -1;
quotient = -1;
}
rd_data[t].i = quotient;
}
}
} break;
@ -511,8 +518,8 @@ instr_trace_t* Emulator::execute(const Instr &instr, uint32_t wid, uint64_t uuid
if (is_w_enabled && mdvArgs.is_w) {
auto dividen = rs1_data[t].i32;
auto divisor = rs2_data[t].i32;
int32_t remainder;
int32_t largest_negative = 0x80000000;
int32_t remainder;
if (divisor == 0){
remainder = dividen;
} else if (dividen == largest_negative && divisor == -1) {
@ -525,13 +532,15 @@ instr_trace_t* Emulator::execute(const Instr &instr, uint32_t wid, uint64_t uuid
auto dividen = rs1_data[t].i;
auto divisor = rs2_data[t].i;
auto largest_negative = WordI(1) << (XLEN-1);
WordI remainder;
if (rs2_data[t].i == 0) {
rd_data[t].i = dividen;
remainder = dividen;
} else if (dividen == largest_negative && divisor == -1) {
rd_data[t].i = 0;
remainder = 0;
} else {
rd_data[t].i = dividen % divisor;
remainder = dividen % divisor;
}
rd_data[t].i = remainder;
}
}
} break;
@ -552,11 +561,13 @@ instr_trace_t* Emulator::execute(const Instr &instr, uint32_t wid, uint64_t uuid
} else {
auto dividen = rs1_data[t].u;
auto divisor = rs2_data[t].u;
Word remainder;
if (rs2_data[t].i != 0) {
rd_data[t].i = dividen % divisor;
remainder = dividen % divisor;
} else {
rd_data[t].i = dividen;
remainder = dividen;
}
rd_data[t].i = remainder;
}
}
} break;