x86: split off condition code helpers

Move condition code helpers to cc_helper.c.

Move the shared inline functions lshift(), cpu_load_eflags() and
cpu_cc_compute_all() to cpu.h.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 387 insertions, 0 deletions

diff --git a/target-i386/cc_helper.c b/target-i386/cc_helper.c
new file mode 100644
index 0000000..ff654bc
--- /dev/null
+++ b/target-i386/cc_helper.c
@@ -0,0 +1,387 @@
+/*
+ *  x86 condition code helpers
+ *
+ *  Copyright (c) 2003 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cpu.h"
+#include "dyngen-exec.h"
+#include "helper.h"
+
+const uint8_t parity_table[256] = {
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
+    0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
+};
+
+#define SHIFT 0
+#include "cc_helper_template.h"
+#undef SHIFT
+
+#define SHIFT 1
+#include "cc_helper_template.h"
+#undef SHIFT
+
+#define SHIFT 2
+#include "cc_helper_template.h"
+#undef SHIFT
+
+#ifdef TARGET_X86_64
+
+#define SHIFT 3
+#include "cc_helper_template.h"
+#undef SHIFT
+
+#endif
+
+static int compute_all_eflags(void)
+{
+    return CC_SRC;
+}
+
+static int compute_c_eflags(void)
+{
+    return CC_SRC & CC_C;
+}
+
+uint32_t helper_cc_compute_all(int op)
+{
+    switch (op) {
+    default: /* should never happen */
+        return 0;
+
+    case CC_OP_EFLAGS:
+        return compute_all_eflags();
+
+    case CC_OP_MULB:
+        return compute_all_mulb();
+    case CC_OP_MULW:
+        return compute_all_mulw();
+    case CC_OP_MULL:
+        return compute_all_mull();
+
+    case CC_OP_ADDB:
+        return compute_all_addb();
+    case CC_OP_ADDW:
+        return compute_all_addw();
+    case CC_OP_ADDL:
+        return compute_all_addl();
+
+    case CC_OP_ADCB:
+        return compute_all_adcb();
+    case CC_OP_ADCW:
+        return compute_all_adcw();
+    case CC_OP_ADCL:
+        return compute_all_adcl();
+
+    case CC_OP_SUBB:
+        return compute_all_subb();
+    case CC_OP_SUBW:
+        return compute_all_subw();
+    case CC_OP_SUBL:
+        return compute_all_subl();
+
+    case CC_OP_SBBB:
+        return compute_all_sbbb();
+    case CC_OP_SBBW:
+        return compute_all_sbbw();
+    case CC_OP_SBBL:
+        return compute_all_sbbl();
+
+    case CC_OP_LOGICB:
+        return compute_all_logicb();
+    case CC_OP_LOGICW:
+        return compute_all_logicw();
+    case CC_OP_LOGICL:
+        return compute_all_logicl();
+
+    case CC_OP_INCB:
+        return compute_all_incb();
+    case CC_OP_INCW:
+        return compute_all_incw();
+    case CC_OP_INCL:
+        return compute_all_incl();
+
+    case CC_OP_DECB:
+        return compute_all_decb();
+    case CC_OP_DECW:
+        return compute_all_decw();
+    case CC_OP_DECL:
+        return compute_all_decl();
+
+    case CC_OP_SHLB:
+        return compute_all_shlb();
+    case CC_OP_SHLW:
+        return compute_all_shlw();
+    case CC_OP_SHLL:
+        return compute_all_shll();
+
+    case CC_OP_SARB:
+        return compute_all_sarb();
+    case CC_OP_SARW:
+        return compute_all_sarw();
+    case CC_OP_SARL:
+        return compute_all_sarl();
+
+#ifdef TARGET_X86_64
+    case CC_OP_MULQ:
+        return compute_all_mulq();
+
+    case CC_OP_ADDQ:
+        return compute_all_addq();
+
+    case CC_OP_ADCQ:
+        return compute_all_adcq();
+
+    case CC_OP_SUBQ:
+        return compute_all_subq();
+
+    case CC_OP_SBBQ:
+        return compute_all_sbbq();
+
+    case CC_OP_LOGICQ:
+        return compute_all_logicq();
+
+    case CC_OP_INCQ:
+        return compute_all_incq();
+
+    case CC_OP_DECQ:
+        return compute_all_decq();
+
+    case CC_OP_SHLQ:
+        return compute_all_shlq();
+
+    case CC_OP_SARQ:
+        return compute_all_sarq();
+#endif
+    }
+}
+
+uint32_t cpu_cc_compute_all(CPUX86State *env1, int op)
+{
+    CPUX86State *saved_env;
+    uint32_t ret;
+
+    saved_env = env;
+    env = env1;
+    ret = helper_cc_compute_all(op);
+    env = saved_env;
+    return ret;
+}
+
+uint32_t helper_cc_compute_c(int op)
+{
+    switch (op) {
+    default: /* should never happen */
+        return 0;
+
+    case CC_OP_EFLAGS:
+        return compute_c_eflags();
+
+    case CC_OP_MULB:
+        return compute_c_mull();
+    case CC_OP_MULW:
+        return compute_c_mull();
+    case CC_OP_MULL:
+        return compute_c_mull();
+
+    case CC_OP_ADDB:
+        return compute_c_addb();
+    case CC_OP_ADDW:
+        return compute_c_addw();
+    case CC_OP_ADDL:
+        return compute_c_addl();
+
+    case CC_OP_ADCB:
+        return compute_c_adcb();
+    case CC_OP_ADCW:
+        return compute_c_adcw();
+    case CC_OP_ADCL:
+        return compute_c_adcl();
+
+    case CC_OP_SUBB:
+        return compute_c_subb();
+    case CC_OP_SUBW:
+        return compute_c_subw();
+    case CC_OP_SUBL:
+        return compute_c_subl();
+
+    case CC_OP_SBBB:
+        return compute_c_sbbb();
+    case CC_OP_SBBW:
+        return compute_c_sbbw();
+    case CC_OP_SBBL:
+        return compute_c_sbbl();
+
+    case CC_OP_LOGICB:
+        return compute_c_logicb();
+    case CC_OP_LOGICW:
+        return compute_c_logicw();
+    case CC_OP_LOGICL:
+        return compute_c_logicl();
+
+    case CC_OP_INCB:
+        return compute_c_incl();
+    case CC_OP_INCW:
+        return compute_c_incl();
+    case CC_OP_INCL:
+        return compute_c_incl();
+
+    case CC_OP_DECB:
+        return compute_c_incl();
+    case CC_OP_DECW:
+        return compute_c_incl();
+    case CC_OP_DECL:
+        return compute_c_incl();
+
+    case CC_OP_SHLB:
+        return compute_c_shlb();
+    case CC_OP_SHLW:
+        return compute_c_shlw();
+    case CC_OP_SHLL:
+        return compute_c_shll();
+
+    case CC_OP_SARB:
+        return compute_c_sarl();
+    case CC_OP_SARW:
+        return compute_c_sarl();
+    case CC_OP_SARL:
+        return compute_c_sarl();
+
+#ifdef TARGET_X86_64
+    case CC_OP_MULQ:
+        return compute_c_mull();
+
+    case CC_OP_ADDQ:
+        return compute_c_addq();
+
+    case CC_OP_ADCQ:
+        return compute_c_adcq();
+
+    case CC_OP_SUBQ:
+        return compute_c_subq();
+
+    case CC_OP_SBBQ:
+        return compute_c_sbbq();
+
+    case CC_OP_LOGICQ:
+        return compute_c_logicq();
+
+    case CC_OP_INCQ:
+        return compute_c_incl();
+
+    case CC_OP_DECQ:
+        return compute_c_incl();
+
+    case CC_OP_SHLQ:
+        return compute_c_shlq();
+
+    case CC_OP_SARQ:
+        return compute_c_sarl();
+#endif
+    }
+}
+
+void helper_write_eflags(target_ulong t0, uint32_t update_mask)
+{
+    cpu_load_eflags(env, t0, update_mask);
+}
+
+target_ulong helper_read_eflags(void)
+{
+    uint32_t eflags;
+
+    eflags = helper_cc_compute_all(CC_OP);
+    eflags |= (DF & DF_MASK);
+    eflags |= env->eflags & ~(VM_MASK | RF_MASK);
+    return eflags;
+}
+
+void helper_clts(void)
+{
+    env->cr[0] &= ~CR0_TS_MASK;
+    env->hflags &= ~HF_TS_MASK;
+}
+
+void helper_reset_rf(void)
+{
+    env->eflags &= ~RF_MASK;
+}
+
+void helper_cli(void)
+{
+    env->eflags &= ~IF_MASK;
+}
+
+void helper_sti(void)
+{
+    env->eflags |= IF_MASK;
+}
+
+#if 0
+/* vm86plus instructions */
+void helper_cli_vm(void)
+{
+    env->eflags &= ~VIF_MASK;
+}
+
+void helper_sti_vm(void)
+{
+    env->eflags |= VIF_MASK;
+    if (env->eflags & VIP_MASK) {
+        raise_exception(env, EXCP0D_GPF);
+    }
+}
+#endif
+
+void helper_set_inhibit_irq(void)
+{
+    env->hflags |= HF_INHIBIT_IRQ_MASK;
+}
+
+void helper_reset_inhibit_irq(void)
+{
+    env->hflags &= ~HF_INHIBIT_IRQ_MASK;
+}