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Added FLEN parameterization for RV32/64 F and D instructions

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This commit is contained in:
Santosh Srivatsan
2022-01-24 15:42:15 -05:00
parent ad92c09f5b
commit 7aa93a735d
10 changed files with 140 additions and 96 deletions
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19
sim/common/bitmanip.h
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@@ -3,6 +3,7 @@
#include <cstdint>
#include <algorithm>
#include <assert.h>
#include "xlen.h"
constexpr uint32_t count_leading_zeros(uint32_t value) {
return value ? __builtin_clz(value) : 32;
@@ -71,10 +72,11 @@ inline uint64_t bit_getw(uint64_t bits, uint32_t start, uint32_t end) {
}
// Apply integer sign extension
inline uint32_t sext32(uint32_t word, uint32_t width) {
inline uintx_t sext(uintx_t word, uint32_t width) {
assert(width > 1);
assert(width <= 32);
uint32_t mask = (1 << width) - 1;
uintx_t unity = 1;
uintx_t mask = (unity << width) - 1;
return ((word >> (width - 1)) & 0x1) ? (word | ~mask) : word;
}
@@ -86,14 +88,15 @@ inline uint64_t sext64(uint64_t word, uint64_t width) {
return ((word >> (width - 1)) & 0x1) ? (word | ~mask) : word;
}
inline __uint128_t sext128(__uint128_t word, uint32_t width) {
inline uintm_t sext_mul(uintm_t word, uint32_t width) {
assert(width > 1);
assert(width <= 128);
__uint128_t unity = 1;
__uint128_t mask = (unity << width) - 1;
assert(width <= 32);
uintm_t unity = 1;
uintm_t mask = (unity << width) - 1;
return ((word >> (width - 1)) & 0x1) ? (word | ~mask) : word;
}
inline uint64_t nan_box(uint32_t word) {
return word | 0xFFFFFFFF00000000;
inline uintf_t nan_box(uint32_t word) {
uintf_t mask = uintf_t(0xffffffff00000000);
return word | mask;
}