moved eflags computation outside op.c

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4472 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 217 insertions, 0 deletions

diff --git a/target-i386/helper_template.h b/target-i386/helper_template.h
index 62bb15f..95af523 100644
--- a/target-i386/helper_template.h
+++ b/target-i386/helper_template.h
@@ -50,6 +50,223 @@
 #error unhandled operand size
 #endif
 
+/* dynamic flags computation */
+
+static int glue(compute_all_add, SUFFIX)(void)
+{
+    int cf, pf, af, zf, sf, of;
+    target_long src1, src2;
+    src1 = CC_SRC;
+    src2 = CC_DST - CC_SRC;
+    cf = (DATA_TYPE)CC_DST < (DATA_TYPE)src1;
+    pf = parity_table[(uint8_t)CC_DST];
+    af = (CC_DST ^ src1 ^ src2) & 0x10;
+    zf = ((DATA_TYPE)CC_DST == 0) << 6;
+    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
+    of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
+    return cf | pf | af | zf | sf | of;
+}
+
+static int glue(compute_c_add, SUFFIX)(void)
+{
+    int cf;
+    target_long src1;
+    src1 = CC_SRC;
+    cf = (DATA_TYPE)CC_DST < (DATA_TYPE)src1;
+    return cf;
+}
+
+static int glue(compute_all_adc, SUFFIX)(void)
+{
+    int cf, pf, af, zf, sf, of;
+    target_long src1, src2;
+    src1 = CC_SRC;
+    src2 = CC_DST - CC_SRC - 1;
+    cf = (DATA_TYPE)CC_DST <= (DATA_TYPE)src1;
+    pf = parity_table[(uint8_t)CC_DST];
+    af = (CC_DST ^ src1 ^ src2) & 0x10;
+    zf = ((DATA_TYPE)CC_DST == 0) << 6;
+    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
+    of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
+    return cf | pf | af | zf | sf | of;
+}
+
+static int glue(compute_c_adc, SUFFIX)(void)
+{
+    int cf;
+    target_long src1;
+    src1 = CC_SRC;
+    cf = (DATA_TYPE)CC_DST <= (DATA_TYPE)src1;
+    return cf;
+}
+
+static int glue(compute_all_sub, SUFFIX)(void)
+{
+    int cf, pf, af, zf, sf, of;
+    target_long src1, src2;
+    src1 = CC_DST + CC_SRC;
+    src2 = CC_SRC;
+    cf = (DATA_TYPE)src1 < (DATA_TYPE)src2;
+    pf = parity_table[(uint8_t)CC_DST];
+    af = (CC_DST ^ src1 ^ src2) & 0x10;
+    zf = ((DATA_TYPE)CC_DST == 0) << 6;
+    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
+    of = lshift((src1 ^ src2) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
+    return cf | pf | af | zf | sf | of;
+}
+
+static int glue(compute_c_sub, SUFFIX)(void)
+{
+    int cf;
+    target_long src1, src2;
+    src1 = CC_DST + CC_SRC;
+    src2 = CC_SRC;
+    cf = (DATA_TYPE)src1 < (DATA_TYPE)src2;
+    return cf;
+}
+
+static int glue(compute_all_sbb, SUFFIX)(void)
+{
+    int cf, pf, af, zf, sf, of;
+    target_long src1, src2;
+    src1 = CC_DST + CC_SRC + 1;
+    src2 = CC_SRC;
+    cf = (DATA_TYPE)src1 <= (DATA_TYPE)src2;
+    pf = parity_table[(uint8_t)CC_DST];
+    af = (CC_DST ^ src1 ^ src2) & 0x10;
+    zf = ((DATA_TYPE)CC_DST == 0) << 6;
+    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
+    of = lshift((src1 ^ src2) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
+    return cf | pf | af | zf | sf | of;
+}
+
+static int glue(compute_c_sbb, SUFFIX)(void)
+{
+    int cf;
+    target_long src1, src2;
+    src1 = CC_DST + CC_SRC + 1;
+    src2 = CC_SRC;
+    cf = (DATA_TYPE)src1 <= (DATA_TYPE)src2;
+    return cf;
+}
+
+static int glue(compute_all_logic, SUFFIX)(void)
+{
+    int cf, pf, af, zf, sf, of;
+    cf = 0;
+    pf = parity_table[(uint8_t)CC_DST];
+    af = 0;
+    zf = ((DATA_TYPE)CC_DST == 0) << 6;
+    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
+    of = 0;
+    return cf | pf | af | zf | sf | of;
+}
+
+static int glue(compute_c_logic, SUFFIX)(void)
+{
+    return 0;
+}
+
+static int glue(compute_all_inc, SUFFIX)(void)
+{
+    int cf, pf, af, zf, sf, of;
+    target_long src1, src2;
+    src1 = CC_DST - 1;
+    src2 = 1;
+    cf = CC_SRC;
+    pf = parity_table[(uint8_t)CC_DST];
+    af = (CC_DST ^ src1 ^ src2) & 0x10;
+    zf = ((DATA_TYPE)CC_DST == 0) << 6;
+    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
+    of = ((CC_DST & DATA_MASK) == SIGN_MASK) << 11;
+    return cf | pf | af | zf | sf | of;
+}
+
+#if DATA_BITS == 32
+static int glue(compute_c_inc, SUFFIX)(void)
+{
+    return CC_SRC;
+}
+#endif
+
+static int glue(compute_all_dec, SUFFIX)(void)
+{
+    int cf, pf, af, zf, sf, of;
+    target_long src1, src2;
+    src1 = CC_DST + 1;
+    src2 = 1;
+    cf = CC_SRC;
+    pf = parity_table[(uint8_t)CC_DST];
+    af = (CC_DST ^ src1 ^ src2) & 0x10;
+    zf = ((DATA_TYPE)CC_DST == 0) << 6;
+    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
+    of = ((CC_DST & DATA_MASK) == ((target_ulong)SIGN_MASK - 1)) << 11;
+    return cf | pf | af | zf | sf | of;
+}
+
+static int glue(compute_all_shl, SUFFIX)(void)
+{
+    int cf, pf, af, zf, sf, of;
+    cf = (CC_SRC >> (DATA_BITS - 1)) & CC_C;
+    pf = parity_table[(uint8_t)CC_DST];
+    af = 0; /* undefined */
+    zf = ((DATA_TYPE)CC_DST == 0) << 6;
+    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
+    /* of is defined if shift count == 1 */
+    of = lshift(CC_SRC ^ CC_DST, 12 - DATA_BITS) & CC_O;
+    return cf | pf | af | zf | sf | of;
+}
+
+static int glue(compute_c_shl, SUFFIX)(void)
+{
+    return (CC_SRC >> (DATA_BITS - 1)) & CC_C;
+}
+
+#if DATA_BITS == 32
+static int glue(compute_c_sar, SUFFIX)(void)
+{
+    return CC_SRC & 1;
+}
+#endif
+
+static int glue(compute_all_sar, SUFFIX)(void)
+{
+    int cf, pf, af, zf, sf, of;
+    cf = CC_SRC & 1;
+    pf = parity_table[(uint8_t)CC_DST];
+    af = 0; /* undefined */
+    zf = ((DATA_TYPE)CC_DST == 0) << 6;
+    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
+    /* of is defined if shift count == 1 */
+    of = lshift(CC_SRC ^ CC_DST, 12 - DATA_BITS) & CC_O;
+    return cf | pf | af | zf | sf | of;
+}
+
+#if DATA_BITS == 32
+static int glue(compute_c_mul, SUFFIX)(void)
+{
+    int cf;
+    cf = (CC_SRC != 0);
+    return cf;
+}
+#endif
+
+/* NOTE: we compute the flags like the P4. On olders CPUs, only OF and
+   CF are modified and it is slower to do that. */
+static int glue(compute_all_mul, SUFFIX)(void)
+{
+    int cf, pf, af, zf, sf, of;
+    cf = (CC_SRC != 0);
+    pf = parity_table[(uint8_t)CC_DST];
+    af = 0; /* undefined */
+    zf = ((DATA_TYPE)CC_DST == 0) << 6;
+    sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
+    of = cf << 11;
+    return cf | pf | af | zf | sf | of;
+}
+
+/* shifts */
+
 target_ulong glue(helper_rcl, SUFFIX)(target_ulong t0, target_ulong t1)
 {
     int count, eflags;