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softfloat library integration

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This commit is contained in:
Blaise Tine
2021-10-10 13:20:50 -07:00
parent 28e26f3130
commit b8682f56ac
21 changed files with 400 additions and 818 deletions
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26
hw/dpi/util_dpi.cpp
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@@ -9,8 +9,8 @@
#include "VX_config.h"
extern "C" {
void dpi_imul(int a, int b, bool is_signed_a, bool is_signed_b, int* resultl, int* resulth);
void dpi_idiv(int a, int b, bool is_signed, int* quotient, int* remainder);
void dpi_imul(bool enable, int a, int b, bool is_signed_a, bool is_signed_b, int* resultl, int* resulth);
void dpi_idiv(bool enable, int a, int b, bool is_signed, int* quotient, int* remainder);
int dpi_register();
void dpi_assert(int inst, bool cond, int delay);
@@ -93,15 +93,18 @@ void dpi_assert(int inst, bool cond, int delay) {
}
}
void dpi_imul(int a, int b, bool is_signed_a, bool is_signed_b, int* resultl, int* resulth) {
uint64_t first = a;
uint64_t second = b;
void dpi_imul(bool enable, int a, int b, bool is_signed_a, bool is_signed_b, int* resultl, int* resulth) {
if (!enable)
return;
if (is_signed_a && (a & 0x80000000)) {
uint64_t first = *(uint32_t*)&a;
uint64_t second = *(uint32_t*)&b;
if (is_signed_a && (first & 0x80000000)) {
first |= 0xFFFFFFFF00000000;
}
if (is_signed_b && (b & 0x80000000)) {
if (is_signed_b && (second & 0x80000000)) {
second |= 0xFFFFFFFF00000000;
}
@@ -116,9 +119,12 @@ void dpi_imul(int a, int b, bool is_signed_a, bool is_signed_b, int* resultl, in
*resulth = (result >> 32) & 0xFFFFFFFF;
}
void dpi_idiv(int a, int b, bool is_signed, int* quotient, int* remainder) {
uint32_t dividen = a;
uint32_t divisor = b;
void dpi_idiv(bool enable, int a, int b, bool is_signed, int* quotient, int* remainder) {
if (!enable)
return;
uint32_t dividen = *(uint32_t*)&a;
uint32_t divisor = *(uint32_t*)&b;
if (is_signed) {
if (b == 0) {