aboutsummaryrefslogtreecommitdiff
path: root/target-mips/op.c
diff options
context:
space:
mode:
Diffstat (limited to 'target-mips/op.c')
-rw-r--r--target-mips/op.c641
1 files changed, 641 insertions, 0 deletions
diff --git a/target-mips/op.c b/target-mips/op.c
new file mode 100644
index 0000000000..6d94be6311
--- /dev/null
+++ b/target-mips/op.c
@@ -0,0 +1,641 @@
+/*
+ * MIPS emulation micro-operations for qemu.
+ *
+ * Copyright (c) 2004-2005 Jocelyn Mayer
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "config.h"
+#include "exec.h"
+
+#define REG 1
+#include "op_template.c"
+#undef REG
+#define REG 2
+#include "op_template.c"
+#undef REG
+#define REG 3
+#include "op_template.c"
+#undef REG
+#define REG 4
+#include "op_template.c"
+#undef REG
+#define REG 5
+#include "op_template.c"
+#undef REG
+#define REG 6
+#include "op_template.c"
+#undef REG
+#define REG 7
+#include "op_template.c"
+#undef REG
+#define REG 8
+#include "op_template.c"
+#undef REG
+#define REG 9
+#include "op_template.c"
+#undef REG
+#define REG 10
+#include "op_template.c"
+#undef REG
+#define REG 11
+#include "op_template.c"
+#undef REG
+#define REG 12
+#include "op_template.c"
+#undef REG
+#define REG 13
+#include "op_template.c"
+#undef REG
+#define REG 14
+#include "op_template.c"
+#undef REG
+#define REG 15
+#include "op_template.c"
+#undef REG
+#define REG 16
+#include "op_template.c"
+#undef REG
+#define REG 17
+#include "op_template.c"
+#undef REG
+#define REG 18
+#include "op_template.c"
+#undef REG
+#define REG 19
+#include "op_template.c"
+#undef REG
+#define REG 20
+#include "op_template.c"
+#undef REG
+#define REG 21
+#include "op_template.c"
+#undef REG
+#define REG 22
+#include "op_template.c"
+#undef REG
+#define REG 23
+#include "op_template.c"
+#undef REG
+#define REG 24
+#include "op_template.c"
+#undef REG
+#define REG 25
+#include "op_template.c"
+#undef REG
+#define REG 26
+#include "op_template.c"
+#undef REG
+#define REG 27
+#include "op_template.c"
+#undef REG
+#define REG 28
+#include "op_template.c"
+#undef REG
+#define REG 29
+#include "op_template.c"
+#undef REG
+#define REG 30
+#include "op_template.c"
+#undef REG
+#define REG 31
+#include "op_template.c"
+#undef REG
+
+#define TN T0
+#include "op_template.c"
+#undef TN
+#define TN T1
+#include "op_template.c"
+#undef TN
+#define TN T2
+#include "op_template.c"
+#undef TN
+
+void op_dup_T0 (void)
+{
+ T2 = T0;
+ RETURN();
+}
+
+void op_load_HI (void)
+{
+ T0 = env->HI;
+ RETURN();
+}
+
+void op_store_HI (void)
+{
+ env->HI = T0;
+ RETURN();
+}
+
+void op_load_LO (void)
+{
+ T0 = env->LO;
+ RETURN();
+}
+
+void op_store_LO (void)
+{
+ env->LO = T0;
+ RETURN();
+}
+
+/* Load and store */
+#define MEMSUFFIX _raw
+#include "op_mem.c"
+#undef MEMSUFFIX
+#if !defined(CONFIG_USER_ONLY)
+#define MEMSUFFIX _user
+#include "op_mem.c"
+#undef MEMSUFFIX
+
+#define MEMSUFFIX _kernel
+#include "op_mem.c"
+#undef MEMSUFFIX
+#endif
+
+/* Arithmetic */
+void op_add (void)
+{
+ T0 += T1;
+ RETURN();
+}
+
+void op_addo (void)
+{
+ target_ulong tmp;
+
+ tmp = T0;
+ T0 += T1;
+ if ((T0 >> 31) ^ (T1 >> 31) ^ (tmp >> 31)) {
+ CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW);
+ }
+ RETURN();
+}
+
+void op_sub (void)
+{
+ T0 -= T1;
+ RETURN();
+}
+
+void op_subo (void)
+{
+ target_ulong tmp;
+
+ tmp = T0;
+ T0 = (int32_t)T0 - (int32_t)T1;
+ if (!((T0 >> 31) ^ (T1 >> 31) ^ (tmp >> 31))) {
+ CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW);
+ }
+ RETURN();
+}
+
+void op_mul (void)
+{
+ T0 = (int32_t)T0 * (int32_t)T1;
+ RETURN();
+}
+
+void op_div (void)
+{
+ if (T1 != 0) {
+ env->LO = (int32_t)T0 / (int32_t)T1;
+ env->HI = (int32_t)T0 % (int32_t)T1;
+ }
+ RETURN();
+}
+
+void op_divu (void)
+{
+ if (T1 != 0) {
+ env->LO = T0 / T1;
+ env->HI = T0 % T1;
+ }
+ RETURN();
+}
+
+/* Logical */
+void op_and (void)
+{
+ T0 &= T1;
+ RETURN();
+}
+
+void op_nor (void)
+{
+ T0 = ~(T0 | T1);
+ RETURN();
+}
+
+void op_or (void)
+{
+ T0 |= T1;
+ RETURN();
+}
+
+void op_xor (void)
+{
+ T0 ^= T1;
+ RETURN();
+}
+
+void op_sll (void)
+{
+ T0 = T0 << T1;
+ RETURN();
+}
+
+void op_sra (void)
+{
+ T0 = (int32_t)T0 >> T1;
+ RETURN();
+}
+
+void op_srl (void)
+{
+ T0 = T0 >> T1;
+ RETURN();
+}
+
+void op_sllv (void)
+{
+ T0 = T1 << (T0 & 0x1F);
+ RETURN();
+}
+
+void op_srav (void)
+{
+ T0 = (int32_t)T1 >> (T0 & 0x1F);
+ RETURN();
+}
+
+void op_srlv (void)
+{
+ T0 = T1 >> (T0 & 0x1F);
+ RETURN();
+}
+
+void op_clo (void)
+{
+ int n;
+
+ if (T0 == (target_ulong)-1) {
+ T0 = 32;
+ } else {
+ for (n = 0; n < 32; n++) {
+ if (!(T0 & (1 << 31)))
+ break;
+ T0 = T0 << 1;
+ }
+ T0 = n;
+ }
+ RETURN();
+}
+
+void op_clz (void)
+{
+ int n;
+
+ if (T0 == 0) {
+ T0 = 32;
+ } else {
+ for (n = 0; n < 32; n++) {
+ if (T0 & (1 << 31))
+ break;
+ T0 = T0 << 1;
+ }
+ T0 = n;
+ }
+ RETURN();
+}
+
+/* 64 bits arithmetic */
+#if (HOST_LONG_BITS == 64)
+static inline uint64_t get_HILO (void)
+{
+ return ((uint64_t)env->HI << 32) | (uint64_t)env->LO;
+}
+
+static inline void set_HILO (uint64_t HILO)
+{
+ env->LO = HILO & 0xFFFFFFFF;
+ env->HI = HILO >> 32;
+}
+
+void op_mult (void)
+{
+ set_HILO((int64_t)T0 * (int64_t)T1);
+ RETURN();
+}
+
+void op_multu (void)
+{
+ set_HILO((uint64_t)T0 * (uint64_t)T1);
+ RETURN();
+}
+
+void op_madd (void)
+{
+ int64_t tmp;
+
+ tmp = ((int64_t)T0 * (int64_t)T1);
+ set_HILO((int64_t)get_HILO() + tmp);
+ RETURN();
+}
+
+void op_maddu (void)
+{
+ uint64_t tmp;
+
+ tmp = ((uint64_t)T0 * (uint64_t)T1);
+ set_HILO(get_HILO() + tmp);
+ RETURN();
+}
+
+void op_msub (void)
+{
+ int64_t tmp;
+
+ tmp = ((int64_t)T0 * (int64_t)T1);
+ set_HILO((int64_t)get_HILO() - tmp);
+ RETURN();
+}
+
+void op_msubu (void)
+{
+ uint64_t tmp;
+
+ tmp = ((uint64_t)T0 * (uint64_t)T1);
+ set_HILO(get_HILO() - tmp);
+ RETURN();
+}
+#else
+void op_mult (void)
+{
+ CALL_FROM_TB0(do_mult);
+ RETURN();
+}
+
+void op_multu (void)
+{
+ CALL_FROM_TB0(do_multu);
+ RETURN();
+}
+
+void op_madd (void)
+{
+ CALL_FROM_TB0(do_madd);
+ RETURN();
+}
+
+void op_maddu (void)
+{
+ CALL_FROM_TB0(do_maddu);
+ RETURN();
+}
+
+void op_msub (void)
+{
+ CALL_FROM_TB0(do_msub);
+ RETURN();
+}
+
+void op_msubu (void)
+{
+ CALL_FROM_TB0(do_msubu);
+ RETURN();
+}
+#endif
+
+/* Conditional moves */
+void op_movn (void)
+{
+ if (T1 != 0)
+ env->gpr[PARAM1] = T0;
+ RETURN();
+}
+
+void op_movz (void)
+{
+ if (T1 == 0)
+ env->gpr[PARAM1] = T0;
+ RETURN();
+}
+
+/* Tests */
+#define OP_COND(name, cond) \
+void glue(op_, name) (void) \
+{ \
+ if (cond) { \
+ T0 = 1; \
+ } else { \
+ T0 = 0; \
+ } \
+ RETURN(); \
+}
+
+OP_COND(eq, T0 == T1);
+OP_COND(ne, T0 != T1);
+OP_COND(ge, (int32_t)T0 >= (int32_t)T1);
+OP_COND(geu, T0 >= T1);
+OP_COND(lt, (int32_t)T0 < (int32_t)T1);
+OP_COND(ltu, T0 < T1);
+OP_COND(gez, (int32_t)T0 >= 0);
+OP_COND(gtz, (int32_t)T0 > 0);
+OP_COND(lez, (int32_t)T0 <= 0);
+OP_COND(ltz, (int32_t)T0 < 0);
+
+/* Branchs */
+//#undef USE_DIRECT_JUMP
+#define EIP env->PC
+
+/* Branch to register */
+void op_save_breg_target (void)
+{
+ env->btarget = T2;
+}
+
+void op_restore_breg_target (void)
+{
+ T2 = env->btarget;
+}
+
+void op_breg (void)
+{
+ env->PC = T2;
+ RETURN();
+}
+
+/* Unconditional branch */
+void op_branch (void)
+{
+ JUMP_TB(branch, PARAM1, 0, PARAM2);
+ RETURN();
+}
+
+void op_save_btarget (void)
+{
+ env->btarget = PARAM1;
+ RETURN();
+}
+
+/* Conditional branch */
+void op_set_bcond (void)
+{
+ T2 = T0;
+ RETURN();
+}
+
+void op_save_bcond (void)
+{
+ env->bcond = T2;
+ RETURN();
+}
+
+void op_restore_bcond (void)
+{
+ T2 = env->bcond;
+ RETURN();
+}
+
+void op_bcond (void)
+{
+ if (T2) {
+ JUMP_TB(bcond, PARAM1, 0, PARAM2);
+ } else {
+ JUMP_TB(bcond, PARAM1, 1, PARAM3);
+ }
+ RETURN();
+}
+
+/* Likely branch (used to skip the delay slot) */
+void op_blikely (void)
+{
+ /* If the test is false, skip the delay slot */
+ if (T2 == 0) {
+ env->hflags = PARAM3;
+ JUMP_TB(blikely, PARAM1, 1, PARAM2);
+ }
+ RETURN();
+}
+
+/* CP0 functions */
+void op_mfc0 (void)
+{
+ CALL_FROM_TB2(do_mfc0, PARAM1, PARAM2);
+ RETURN();
+}
+
+void op_mtc0 (void)
+{
+ CALL_FROM_TB2(do_mtc0, PARAM1, PARAM2);
+ RETURN();
+}
+
+#if defined(MIPS_USES_R4K_TLB)
+void op_tlbwi (void)
+{
+ CALL_FROM_TB0(do_tlbwi);
+ RETURN();
+}
+
+void op_tlbwr (void)
+{
+ CALL_FROM_TB0(do_tlbwr);
+ RETURN();
+}
+
+void op_tlbp (void)
+{
+ CALL_FROM_TB0(do_tlbp);
+ RETURN();
+}
+
+void op_tlbr (void)
+{
+ CALL_FROM_TB0(do_tlbr);
+ RETURN();
+}
+#endif
+
+/* Specials */
+void op_pmon (void)
+{
+ CALL_FROM_TB1(do_pmon, PARAM1);
+}
+
+void op_trap (void)
+{
+ if (T0) {
+ CALL_FROM_TB1(do_raise_exception, EXCP_TRAP);
+ }
+ RETURN();
+}
+
+void op_set_lladdr (void)
+{
+ env->CP0_LLAddr = T2;
+}
+
+void debug_eret (void);
+void op_eret (void)
+{
+ CALL_FROM_TB0(debug_eret);
+ if (env->hflags & MIPS_HFLAG_ERL)
+ env->PC = env->CP0_ErrorEPC;
+ else
+ env->PC = env->CP0_EPC;
+ env->CP0_LLAddr = 1;
+}
+
+void op_deret (void)
+{
+ CALL_FROM_TB0(debug_eret);
+ env->PC = env->CP0_DEPC;
+}
+
+void op_save_state (void)
+{
+ env->hflags = PARAM1;
+ RETURN();
+}
+
+void op_save_pc (void)
+{
+ env->PC = PARAM1;
+ RETURN();
+}
+
+void op_raise_exception (void)
+{
+ CALL_FROM_TB1(do_raise_exception, PARAM1);
+ RETURN();
+}
+
+void op_raise_exception_err (void)
+{
+ CALL_FROM_TB2(do_raise_exception_err, PARAM1, PARAM2);
+ RETURN();
+}
+
+void op_exit_tb (void)
+{
+ EXIT_TB();
+}
+
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-12 16:07:14 +0000