repository: /home/avi/kvm
branch: master
commit 1e79d4532af51300d253de1beb13c0f844915ff3
Author: Avi Kivity <[EMAIL PROTECTED]>
Date: Mon Nov 26 17:06:19 2007 +0200
kvm: testsuite: add cmps test
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
diff --git a/user/test/x86/emulator.c b/user/test/x86/emulator.c
index 61bccd7..830e7dc 100644
--- a/user/test/x86/emulator.c
+++ b/user/test/x86/emulator.c
@@ -15,6 +15,81 @@ void report(const char *name, int result)
}
}
+void test_cmps(void *mem)
+{
+ unsigned char *m1 = mem, *m2 = mem + 1024;
+ unsigned char m3[1024];
+ void *rsi, *rdi;
+ long rcx, tmp;
+ int i;
+
+ for (int i = 0; i < 100; ++i)
+ m1[i] = m2[i] = m3[i] = i;
+ for (int i = 100; i < 200; ++i)
+ m1[i] = (m3[i] = m2[i] = i) + 1;
+
+ rsi = m1; rdi = m3; rcx = 30;
+ asm volatile("xor %[tmp], %[tmp] \n\t"
+ "repe/cmpsb"
+ : "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
+ : : "cc");
+ report("repe/cmpsb (1)", rcx == 0 && rsi == m1 + 30 && rdi == m3 + 30);
+
+ rsi = m1; rdi = m3; rcx = 15;
+ asm volatile("xor %[tmp], %[tmp] \n\t"
+ "repe/cmpsw"
+ : "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
+ : : "cc");
+ report("repe/cmpsw (1)", rcx == 0 && rsi == m1 + 30 && rdi == m3 + 30);
+
+ rsi = m1; rdi = m3; rcx = 7;
+ asm volatile("xor %[tmp], %[tmp] \n\t"
+ "repe/cmpsl"
+ : "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
+ : : "cc");
+ report("repe/cmpll (1)", rcx == 0 && rsi == m1 + 28 && rdi == m3 + 28);
+
+ rsi = m1; rdi = m3; rcx = 4;
+ asm volatile("xor %[tmp], %[tmp] \n\t"
+ "repe/cmpsq"
+ : "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
+ : : "cc");
+ report("repe/cmpsq (1)", rcx == 0 && rsi == m1 + 32 && rdi == m3 + 32);
+
+ rsi = m1; rdi = m3; rcx = 130;
+ asm volatile("xor %[tmp], %[tmp] \n\t"
+ "repe/cmpsb"
+ : "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
+ : : "cc");
+ report("repe/cmpsb (2)",
+ rcx == 29 && rsi == m1 + 101 && rdi == m3 + 101);
+
+ rsi = m1; rdi = m3; rcx = 65;
+ asm volatile("xor %[tmp], %[tmp] \n\t"
+ "repe/cmpsw"
+ : "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
+ : : "cc");
+ report("repe/cmpsw (2)",
+ rcx == 14 && rsi == m1 + 102 && rdi == m3 + 102);
+
+ rsi = m1; rdi = m3; rcx = 32;
+ asm volatile("xor %[tmp], %[tmp] \n\t"
+ "repe/cmpsl"
+ : "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
+ : : "cc");
+ report("repe/cmpll (2)",
+ rcx == 6 && rsi == m1 + 104 && rdi == m3 + 104);
+
+ rsi = m1; rdi = m3; rcx = 16;
+ asm volatile("xor %[tmp], %[tmp] \n\t"
+ "repe/cmpsq"
+ : "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
+ : : "cc");
+ report("repe/cmpsq (2)",
+ rcx == 3 && rsi == m1 + 104 && rdi == m3 + 104);
+
+}
+
int main()
{
void *mem;
@@ -32,6 +107,8 @@ int main()
: "memory");
report("mov reg, r/m (1)", t2 == 0x123456789abcdef);
+ test_cmps(mem);
+
printf("\nSUMMARY: %d tests, %d failures\n", tests, fails);
return fails ? 1 : 0;
}
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