jens
cd2640e9c6
Committed on the Free edition of March Hare Software CVSNT Server. Upgrade to CVS Suite for more features and support: http://march-hare.com/cvsnt/ git-svn-id: http://moon:8086/svn/vhdl/trunk@986 cc03376c-175c-47c8-b038-4cd826a8556b
135 lines
2.1 KiB
C
135 lines
2.1 KiB
C
//#include <stdio.h>
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#include <stdlib.h>
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//#include <string.h>
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#define NUM_ELEMENTS 100
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#define NUM_RUNS 1000
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char sein(void)
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{
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volatile char *pUART_stat = (char*)0x80000008;
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volatile char *pUART_data = (char*)0x80000004;
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while(!(0x10 & *pUART_stat));
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return *pUART_data;
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}
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void saus(char c)
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{
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volatile char *pUART_stat = (char*)0x80000008;
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volatile char *pUART_data = (char*)0x80000004;
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while((0x02 & *pUART_stat) != 0);
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*pUART_data = c;
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}
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int sputs(char *pStr)
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{
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char *start;
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start = pStr;
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while(*pStr)
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saus(*(pStr++));
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return pStr - start;
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}
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void print_byte(char byte)
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{
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int i;
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unsigned char c, nibble;
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for (i=0; i < 2; i++)
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{
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nibble = (char)((byte >> 4) & 0xF);
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byte <<= 4;
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if (nibble < 10)
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c = nibble + '0';
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else
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c = nibble + 'A' - 10;
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saus(c);
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}
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}
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void print_word(int word)
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{
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int i;
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unsigned char c, nibble;
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for (i=0; i < 4; i++)
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{
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c = (char) (word >> 24);
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print_byte(c);
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word <<= 8;
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}
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}
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int main (void)
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{
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int cnt, i, j;
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int mix, *pReg = (int*)0x80000000;
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volatile char *pUART_data = (char*)0x80000004;
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volatile char *pUART_ctrl = (char*)0x80000008;
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volatile char *pUART_baud = (char*)0x80000009;
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char msg[] = "MIPS R3000 CPU\r\nMul/Div Test\r\n";
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int s1, s2, sp, st;
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div_t div_res;
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*pUART_baud = 0x35;
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*pUART_ctrl = 0x55;
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srand(0x19701031);
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sputs(msg);
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cnt = 0;
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while(1)
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{
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for (i=0; i < 1000; i++)
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{
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for (j=1; j < 1000; j++)
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{
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mix = (int)rand();
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mix = (mix << 8) ^ (mix << 16);
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s1 = (int)rand() ^ mix;
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mix = (int)rand();
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mix = (mix << 8) ^ (mix << 16);
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s2 = (int)rand() ^ mix;
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// s1 = i;
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// s2 = j;
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div_res = div(s1, s2);
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// print_word(s1);
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// sputs(" / ");
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// print_word(s2);
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// sputs(" = ");
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// print_word(div_res.quot);
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// sputs(" R: ");
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// print_word(div_res.rem);
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// sputs(" -- ");
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sp = s2*div_res.quot;
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st = div_res.rem + sp;
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if (st != s1)
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{
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sputs("Failed: ");
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sputs("d*quot = ");
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print_word(sp);
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sputs("\r\n");
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return -1;
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}
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}
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}
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sputs("Iteration ");
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print_word(cnt++);
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sputs(": Passed\r\n");
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}
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}
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