This calls the C function fmodf() as the VM Spec suggests.
Signed-off-by: Arthur Huillet <arthur.huil...@free.fr>
---
arch/x86/insn-selector_32.brg | 21 +++++++++++++++++++++
regression/jvm/FloatArithmeticTest.java | 9 +++++++--
2 files changed, 28 insertions(+), 2 deletions(-)
diff --git a/arch/x86/insn-selector_32.brg b/arch/x86/insn-selector_32.brg
index 1ba67b9..0e8e84f 100644
--- a/arch/x86/insn-selector_32.brg
+++ b/arch/x86/insn-selector_32.brg
@@ -22,6 +22,7 @@
#include <assert.h>
#include <errno.h>
+#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -447,6 +448,26 @@ reg: OP_REM(reg, reg) 1
select_insn(s, tree, reg_reg_insn(INSN_DIV_REG_REG, state->right->reg1,
eax));
}
+freg: OP_FREM(freg, freg) 1
+{
+ struct var_info *esp, *eax;
+
+ state->reg1 = get_fpu_var(s->b_parent);
+
+ esp = get_fixed_var(s->b_parent, REG_ESP);
+ eax = get_fixed_var(s->b_parent, REG_EAX);
+
+ select_insn(s, tree, reg_membase_insn(INSN_MOV_XMM_MEMBASE,
state->left->reg1, esp, -8));
+ select_insn(s, tree, reg_membase_insn(INSN_MOV_XMM_MEMBASE,
state->right->reg1, esp, -4));
+ select_insn(s, tree, imm_reg_insn(INSN_SUB_IMM_REG, 8, esp));
+
+ select_insn(s, tree, rel_insn(INSN_CALL_REL, (unsigned long)fmodf));
+ method_args_cleanup(s, tree, 2);
+
+ select_insn(s, tree, membase_insn(INSN_FSTP_MEMBASE, esp, -4));
+ select_insn(s, tree, membase_reg_insn(INSN_MOV_MEMBASE_XMM, esp, -4,
state->reg1));
+}
+
reg: OP_REM_64(reg, reg) 1
{
emulate_op_64(state, s, tree, emulate_lrem, J_LONG);
diff --git a/regression/jvm/FloatArithmeticTest.java
b/regression/jvm/FloatArithmeticTest.java
index 711710a..3a44995 100644
--- a/regression/jvm/FloatArithmeticTest.java
+++ b/regression/jvm/FloatArithmeticTest.java
@@ -97,6 +97,12 @@ public class FloatArithmeticTest extends TestCase {
return dividend / divisor;
}
+ public static void testFloatRemainder() {
+ assertEquals(2.0f, rem(6.0f, 4.0f));
+ assertEquals(10000.5f, rem(10000.5f, 10001.5f));
+ assertEquals(1.0f, rem(10002.5f, 10001.5f));
+ }
+
public static float rem(float dividend, float divisor) {
return dividend % divisor;
}
@@ -133,8 +139,7 @@ public class FloatArithmeticTest extends TestCase {
testFloatSubtractionImmediateLocal();
testFloatMultiplication();
testFloatDivision();
-// FIXME
-// testFloatRemainder();
+ testFloatRemainder();
testFloatNegation();
testFloatIntConversion();
exit();
--
1.6.3.3
------------------------------------------------------------------------------
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