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authorThomas Huth <thuth@redhat.com>2016-10-11 08:56:52 +0200
committerThomas Huth <thuth@redhat.com>2016-12-20 21:52:12 +0100
commitfcf5ef2ab52c621a4617ebbef36bf43b4003f4c0 (patch)
tree2b450d96b01455df8ed908bf8f26ddc388a03380 /target-m68k/op_helper.c
parent82ecffa8c050bf5bbc13329e9b65eac1caa5b55c (diff)
Move target-* CPU file into a target/ folder
We've currently got 18 architectures in QEMU, and thus 18 target-xxx folders in the root folder of the QEMU source tree. More architectures (e.g. RISC-V, AVR) are likely to be included soon, too, so the main folder of the QEMU sources slowly gets quite overcrowded with the target-xxx folders. To disburden the main folder a little bit, let's move the target-xxx folders into a dedicated target/ folder, so that target-xxx/ simply becomes target/xxx/ instead. Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part] Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part] Acked-by: Michael Walle <michael@walle.cc> [lm32 part] Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part] Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part] Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part] Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part] Acked-by: Richard Henderson <rth@twiddle.net> [alpha part] Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part] Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part] Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [cris&microblaze part] Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part] Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'target-m68k/op_helper.c')
-rw-r--r--target-m68k/op_helper.c229
1 files changed, 0 insertions, 229 deletions
diff --git a/target-m68k/op_helper.c b/target-m68k/op_helper.c
deleted file mode 100644
index 48e02e4062..0000000000
--- a/target-m68k/op_helper.c
+++ /dev/null
@@ -1,229 +0,0 @@
-/*
- * M68K helper routines
- *
- * Copyright (c) 2007 CodeSourcery
- *
- * 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 "qemu/osdep.h"
-#include "cpu.h"
-#include "exec/helper-proto.h"
-#include "exec/exec-all.h"
-#include "exec/cpu_ldst.h"
-#include "exec/semihost.h"
-
-#if defined(CONFIG_USER_ONLY)
-
-void m68k_cpu_do_interrupt(CPUState *cs)
-{
- cs->exception_index = -1;
-}
-
-static inline void do_interrupt_m68k_hardirq(CPUM68KState *env)
-{
-}
-
-#else
-
-/* Try to fill the TLB and return an exception if error. If retaddr is
- NULL, it means that the function was called in C code (i.e. not
- from generated code or from helper.c) */
-void tlb_fill(CPUState *cs, target_ulong addr, MMUAccessType access_type,
- int mmu_idx, uintptr_t retaddr)
-{
- int ret;
-
- ret = m68k_cpu_handle_mmu_fault(cs, addr, access_type, mmu_idx);
- if (unlikely(ret)) {
- if (retaddr) {
- /* now we have a real cpu fault */
- cpu_restore_state(cs, retaddr);
- }
- cpu_loop_exit(cs);
- }
-}
-
-static void do_rte(CPUM68KState *env)
-{
- uint32_t sp;
- uint32_t fmt;
-
- sp = env->aregs[7];
- fmt = cpu_ldl_kernel(env, sp);
- env->pc = cpu_ldl_kernel(env, sp + 4);
- sp |= (fmt >> 28) & 3;
- env->aregs[7] = sp + 8;
-
- helper_set_sr(env, fmt);
-}
-
-static void do_interrupt_all(CPUM68KState *env, int is_hw)
-{
- CPUState *cs = CPU(m68k_env_get_cpu(env));
- uint32_t sp;
- uint32_t fmt;
- uint32_t retaddr;
- uint32_t vector;
-
- fmt = 0;
- retaddr = env->pc;
-
- if (!is_hw) {
- switch (cs->exception_index) {
- case EXCP_RTE:
- /* Return from an exception. */
- do_rte(env);
- return;
- case EXCP_HALT_INSN:
- if (semihosting_enabled()
- && (env->sr & SR_S) != 0
- && (env->pc & 3) == 0
- && cpu_lduw_code(env, env->pc - 4) == 0x4e71
- && cpu_ldl_code(env, env->pc) == 0x4e7bf000) {
- env->pc += 4;
- do_m68k_semihosting(env, env->dregs[0]);
- return;
- }
- cs->halted = 1;
- cs->exception_index = EXCP_HLT;
- cpu_loop_exit(cs);
- return;
- }
- if (cs->exception_index >= EXCP_TRAP0
- && cs->exception_index <= EXCP_TRAP15) {
- /* Move the PC after the trap instruction. */
- retaddr += 2;
- }
- }
-
- vector = cs->exception_index << 2;
-
- fmt |= 0x40000000;
- fmt |= vector << 16;
- fmt |= env->sr;
- fmt |= cpu_m68k_get_ccr(env);
-
- env->sr |= SR_S;
- if (is_hw) {
- env->sr = (env->sr & ~SR_I) | (env->pending_level << SR_I_SHIFT);
- env->sr &= ~SR_M;
- }
- m68k_switch_sp(env);
- sp = env->aregs[7];
- fmt |= (sp & 3) << 28;
-
- /* ??? This could cause MMU faults. */
- sp &= ~3;
- sp -= 4;
- cpu_stl_kernel(env, sp, retaddr);
- sp -= 4;
- cpu_stl_kernel(env, sp, fmt);
- env->aregs[7] = sp;
- /* Jump to vector. */
- env->pc = cpu_ldl_kernel(env, env->vbr + vector);
-}
-
-void m68k_cpu_do_interrupt(CPUState *cs)
-{
- M68kCPU *cpu = M68K_CPU(cs);
- CPUM68KState *env = &cpu->env;
-
- do_interrupt_all(env, 0);
-}
-
-static inline void do_interrupt_m68k_hardirq(CPUM68KState *env)
-{
- do_interrupt_all(env, 1);
-}
-#endif
-
-bool m68k_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
-{
- M68kCPU *cpu = M68K_CPU(cs);
- CPUM68KState *env = &cpu->env;
-
- if (interrupt_request & CPU_INTERRUPT_HARD
- && ((env->sr & SR_I) >> SR_I_SHIFT) < env->pending_level) {
- /* Real hardware gets the interrupt vector via an IACK cycle
- at this point. Current emulated hardware doesn't rely on
- this, so we provide/save the vector when the interrupt is
- first signalled. */
- cs->exception_index = env->pending_vector;
- do_interrupt_m68k_hardirq(env);
- return true;
- }
- return false;
-}
-
-static void raise_exception(CPUM68KState *env, int tt)
-{
- CPUState *cs = CPU(m68k_env_get_cpu(env));
-
- cs->exception_index = tt;
- cpu_loop_exit(cs);
-}
-
-void HELPER(raise_exception)(CPUM68KState *env, uint32_t tt)
-{
- raise_exception(env, tt);
-}
-
-void HELPER(divu)(CPUM68KState *env, uint32_t word)
-{
- uint32_t num;
- uint32_t den;
- uint32_t quot;
- uint32_t rem;
-
- num = env->div1;
- den = env->div2;
- /* ??? This needs to make sure the throwing location is accurate. */
- if (den == 0) {
- raise_exception(env, EXCP_DIV0);
- }
- quot = num / den;
- rem = num % den;
-
- env->cc_v = (word && quot > 0xffff ? -1 : 0);
- env->cc_z = quot;
- env->cc_n = quot;
- env->cc_c = 0;
-
- env->div1 = quot;
- env->div2 = rem;
-}
-
-void HELPER(divs)(CPUM68KState *env, uint32_t word)
-{
- int32_t num;
- int32_t den;
- int32_t quot;
- int32_t rem;
-
- num = env->div1;
- den = env->div2;
- if (den == 0) {
- raise_exception(env, EXCP_DIV0);
- }
- quot = num / den;
- rem = num % den;
-
- env->cc_v = (word && quot != (int16_t)quot ? -1 : 0);
- env->cc_z = quot;
- env->cc_n = quot;
- env->cc_c = 0;
-
- env->div1 = quot;
- env->div2 = rem;
-}