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This commit is contained in:
Wilson Snyder
2019-03-07 20:56:53 -05:00
parent c4b9f4bccf
commit 7bf3366041
13 changed files with 328 additions and 0 deletions
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include/verilated.cpp
+53
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@@ -1384,6 +1384,59 @@ void VL_WRITEMEM_N(
fclose(fp);
}
IData VL_FREAD_I(int width, int array_lsb, int array_size,
void* memp, IData fpi, IData start, IData count) VL_MT_SAFE {
// While threadsafe, each thread can only access different file handles
FILE* fp = VL_CVT_I_FP(fpi);
if (VL_UNLIKELY(!fp)) return 0;
if (count > (array_size - (start - array_lsb))) count = array_size - (start - array_lsb);
// Prep for reading
IData read_count = 0;
IData read_elements = 0;
int start_shift = (width-1) & ~7; // bit+7:bit gets first character
int shift = start_shift;
// Read the data
// We process a character at a time, as then we don't need to deal
// with changing buffer sizes dynamically, etc.
while (1) {
int c = fgetc(fp);
if (VL_UNLIKELY(c==EOF)) break;
// Shift value in
IData entry = read_elements + start - array_lsb;
if (width <= 8) {
CData* datap = &(reinterpret_cast<CData*>(memp))[entry];
if (shift == start_shift) { *datap = 0; }
*datap |= (c << shift) & VL_MASK_I(width);
} else if (width <= 16) {
SData* datap = &(reinterpret_cast<SData*>(memp))[entry];
if (shift == start_shift) { *datap = 0; }
*datap |= (c << shift) & VL_MASK_I(width);
} else if (width <= VL_WORDSIZE) {
IData* datap = &(reinterpret_cast<IData*>(memp))[entry];
if (shift == start_shift) { *datap = 0; }
*datap |= (c << shift) & VL_MASK_I(width);
} else if (width <= VL_QUADSIZE) {
QData* datap = &(reinterpret_cast<QData*>(memp))[entry];
if (shift == start_shift) { *datap = 0; }
*datap |= ((static_cast<QData>(c) << static_cast<QData>(shift))
& VL_MASK_Q(width));
} else {
WDataOutP datap = &(reinterpret_cast<WDataOutP>(memp))[ entry*VL_WORDS_I(width) ];
if (shift == start_shift) { VL_ZERO_RESET_W(width, datap); }
datap[VL_BITWORD_I(shift)] |= (c << VL_BITBIT_I(shift));
}
// Prep for next
++read_count;
shift -= 8;
if (shift < 0) {
shift = start_shift;
++read_elements;
if (VL_UNLIKELY(read_elements >= count)) break;
}
}
return read_count;
}
void VL_READMEM_Q(bool hex, int width, int depth, int array_lsb, int,
QData filename, void* memp, IData start, IData end) VL_MT_SAFE {
WData fnw[2]; VL_SET_WQ(fnw, filename);