70 lines
1.3 KiB
C
70 lines
1.3 KiB
C
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/* See if ADOX give expected results */
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#include <assert.h>
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#include <stdint.h>
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#include <stdbool.h>
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static uint64_t adoxq(bool *c_out, uint64_t a, uint64_t b, bool c)
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{
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asm ("addl $0x7fffffff, %k1\n\t"
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"adoxq %2, %0\n\t"
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"seto %b1"
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: "+r"(a), "=&r"(c) : "r"(b), "1"((int)c));
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*c_out = c;
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return a;
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}
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static uint64_t adoxl(bool *c_out, uint64_t a, uint64_t b, bool c)
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{
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asm ("addl $0x7fffffff, %k1\n\t"
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"adoxl %k2, %k0\n\t"
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"seto %b1"
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: "+r"(a), "=&r"(c) : "r"(b), "1"((int)c));
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*c_out = c;
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return a;
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}
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int main()
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{
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uint64_t r;
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bool c;
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r = adoxq(&c, 0, 0, 0);
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assert(r == 0);
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assert(c == 0);
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r = adoxl(&c, 0, 0, 0);
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assert(r == 0);
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assert(c == 0);
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r = adoxl(&c, 0x100000000, 0, 0);
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assert(r == 0);
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assert(c == 0);
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r = adoxq(&c, 0, 0, 1);
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assert(r == 1);
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assert(c == 0);
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r = adoxl(&c, 0, 0, 1);
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assert(r == 1);
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assert(c == 0);
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r = adoxq(&c, -1, -1, 0);
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assert(r == -2);
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assert(c == 1);
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r = adoxl(&c, -1, -1, 0);
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assert(r == 0xfffffffe);
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assert(c == 1);
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r = adoxq(&c, -1, -1, 1);
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assert(r == -1);
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assert(c == 1);
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r = adoxl(&c, -1, -1, 1);
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assert(r == 0xffffffff);
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assert(c == 1);
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return 0;
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}
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