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Diffstat (limited to 'target/unicore32/softmmu.c')
-rw-r--r--target/unicore32/softmmu.c280
1 files changed, 0 insertions, 280 deletions
diff --git a/target/unicore32/softmmu.c b/target/unicore32/softmmu.c
deleted file mode 100644
index cbdaa500b7..0000000000
--- a/target/unicore32/softmmu.c
+++ /dev/null
@@ -1,280 +0,0 @@
-/*
- * Softmmu related functions
- *
- * Copyright (C) 2010-2012 Guan Xuetao
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation, or any later version.
- * See the COPYING file in the top-level directory.
- */
-#ifdef CONFIG_USER_ONLY
-#error This file only exist under softmmu circumstance
-#endif
-
-#include "qemu/osdep.h"
-#include "cpu.h"
-#include "exec/exec-all.h"
-#include "qemu/error-report.h"
-
-#undef DEBUG_UC32
-
-#ifdef DEBUG_UC32
-#define DPRINTF(fmt, ...) printf("%s: " fmt , __func__, ## __VA_ARGS__)
-#else
-#define DPRINTF(fmt, ...) do {} while (0)
-#endif
-
-#define SUPERPAGE_SIZE (1 << 22)
-#define UC32_PAGETABLE_READ (1 << 8)
-#define UC32_PAGETABLE_WRITE (1 << 7)
-#define UC32_PAGETABLE_EXEC (1 << 6)
-#define UC32_PAGETABLE_EXIST (1 << 2)
-#define PAGETABLE_TYPE(x) ((x) & 3)
-
-
-/* Map CPU modes onto saved register banks. */
-static inline int bank_number(CPUUniCore32State *env, int mode)
-{
- switch (mode) {
- case ASR_MODE_USER:
- case ASR_MODE_SUSR:
- return 0;
- case ASR_MODE_PRIV:
- return 1;
- case ASR_MODE_TRAP:
- return 2;
- case ASR_MODE_EXTN:
- return 3;
- case ASR_MODE_INTR:
- return 4;
- }
- cpu_abort(env_cpu(env), "Bad mode %x\n", mode);
- return -1;
-}
-
-void switch_mode(CPUUniCore32State *env, int mode)
-{
- int old_mode;
- int i;
-
- old_mode = env->uncached_asr & ASR_M;
- if (mode == old_mode) {
- return;
- }
-
- i = bank_number(env, old_mode);
- env->banked_r29[i] = env->regs[29];
- env->banked_r30[i] = env->regs[30];
- env->banked_bsr[i] = env->bsr;
-
- i = bank_number(env, mode);
- env->regs[29] = env->banked_r29[i];
- env->regs[30] = env->banked_r30[i];
- env->bsr = env->banked_bsr[i];
-}
-
-/* Handle a CPU exception. */
-void uc32_cpu_do_interrupt(CPUState *cs)
-{
- UniCore32CPU *cpu = UNICORE32_CPU(cs);
- CPUUniCore32State *env = &cpu->env;
- uint32_t addr;
- int new_mode;
-
- switch (cs->exception_index) {
- case UC32_EXCP_PRIV:
- new_mode = ASR_MODE_PRIV;
- addr = 0x08;
- break;
- case UC32_EXCP_ITRAP:
- DPRINTF("itrap happened at %x\n", env->regs[31]);
- new_mode = ASR_MODE_TRAP;
- addr = 0x0c;
- break;
- case UC32_EXCP_DTRAP:
- DPRINTF("dtrap happened at %x\n", env->regs[31]);
- new_mode = ASR_MODE_TRAP;
- addr = 0x10;
- break;
- case UC32_EXCP_INTR:
- new_mode = ASR_MODE_INTR;
- addr = 0x18;
- break;
- default:
- cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index);
- return;
- }
- /* High vectors. */
- if (env->cp0.c1_sys & (1 << 13)) {
- addr += 0xffff0000;
- }
-
- switch_mode(env, new_mode);
- env->bsr = cpu_asr_read(env);
- env->uncached_asr = (env->uncached_asr & ~ASR_M) | new_mode;
- env->uncached_asr |= ASR_I;
- /* The PC already points to the proper instruction. */
- env->regs[30] = env->regs[31];
- env->regs[31] = addr;
- cs->interrupt_request |= CPU_INTERRUPT_EXITTB;
-}
-
-static int get_phys_addr_ucv2(CPUUniCore32State *env, uint32_t address,
- int access_type, int is_user, uint32_t *phys_ptr, int *prot,
- target_ulong *page_size)
-{
- CPUState *cs = env_cpu(env);
- int code;
- uint32_t table;
- uint32_t desc;
- uint32_t phys_addr;
-
- /* Pagetable walk. */
- /* Lookup l1 descriptor. */
- table = env->cp0.c2_base & 0xfffff000;
- table |= (address >> 20) & 0xffc;
- desc = ldl_phys(cs->as, table);
- code = 0;
- switch (PAGETABLE_TYPE(desc)) {
- case 3:
- /* Superpage */
- if (!(desc & UC32_PAGETABLE_EXIST)) {
- code = 0x0b; /* superpage miss */
- goto do_fault;
- }
- phys_addr = (desc & 0xffc00000) | (address & 0x003fffff);
- *page_size = SUPERPAGE_SIZE;
- break;
- case 0:
- /* Lookup l2 entry. */
- if (is_user) {
- DPRINTF("PGD address %x, desc %x\n", table, desc);
- }
- if (!(desc & UC32_PAGETABLE_EXIST)) {
- code = 0x05; /* second pagetable miss */
- goto do_fault;
- }
- table = (desc & 0xfffff000) | ((address >> 10) & 0xffc);
- desc = ldl_phys(cs->as, table);
- /* 4k page. */
- if (is_user) {
- DPRINTF("PTE address %x, desc %x\n", table, desc);
- }
- if (!(desc & UC32_PAGETABLE_EXIST)) {
- code = 0x08; /* page miss */
- goto do_fault;
- }
- switch (PAGETABLE_TYPE(desc)) {
- case 0:
- phys_addr = (desc & 0xfffff000) | (address & 0xfff);
- *page_size = TARGET_PAGE_SIZE;
- break;
- default:
- cpu_abort(cs, "wrong page type!");
- }
- break;
- default:
- cpu_abort(cs, "wrong page type!");
- }
-
- *phys_ptr = phys_addr;
- *prot = 0;
- /* Check access permissions. */
- if (desc & UC32_PAGETABLE_READ) {
- *prot |= PAGE_READ;
- } else {
- if (is_user && (access_type == 0)) {
- code = 0x11; /* access unreadable area */
- goto do_fault;
- }
- }
-
- if (desc & UC32_PAGETABLE_WRITE) {
- *prot |= PAGE_WRITE;
- } else {
- if (is_user && (access_type == 1)) {
- code = 0x12; /* access unwritable area */
- goto do_fault;
- }
- }
-
- if (desc & UC32_PAGETABLE_EXEC) {
- *prot |= PAGE_EXEC;
- } else {
- if (is_user && (access_type == 2)) {
- code = 0x13; /* access unexecutable area */
- goto do_fault;
- }
- }
-
-do_fault:
- return code;
-}
-
-bool uc32_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
- MMUAccessType access_type, int mmu_idx,
- bool probe, uintptr_t retaddr)
-{
- UniCore32CPU *cpu = UNICORE32_CPU(cs);
- CPUUniCore32State *env = &cpu->env;
- uint32_t phys_addr;
- target_ulong page_size;
- int prot;
- int ret, is_user;
-
- ret = 1;
- is_user = mmu_idx == MMU_USER_IDX;
-
- if ((env->cp0.c1_sys & 1) == 0) {
- /* MMU disabled. */
- phys_addr = address;
- prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
- page_size = TARGET_PAGE_SIZE;
- ret = 0;
- } else {
- if ((address & (1 << 31)) || (is_user)) {
- ret = get_phys_addr_ucv2(env, address, access_type, is_user,
- &phys_addr, &prot, &page_size);
- if (is_user) {
- DPRINTF("user space access: ret %x, address %" VADDR_PRIx ", "
- "access_type %x, phys_addr %x, prot %x\n",
- ret, address, access_type, phys_addr, prot);
- }
- } else {
- /*IO memory */
- phys_addr = address | (1 << 31);
- prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
- page_size = TARGET_PAGE_SIZE;
- ret = 0;
- }
- }
-
- if (ret == 0) {
- /* Map a single page. */
- phys_addr &= TARGET_PAGE_MASK;
- address &= TARGET_PAGE_MASK;
- tlb_set_page(cs, address, phys_addr, prot, mmu_idx, page_size);
- return true;
- }
-
- if (probe) {
- return false;
- }
-
- env->cp0.c3_faultstatus = ret;
- env->cp0.c4_faultaddr = address;
- if (access_type == 2) {
- cs->exception_index = UC32_EXCP_ITRAP;
- } else {
- cs->exception_index = UC32_EXCP_DTRAP;
- }
- cpu_loop_exit_restore(cs, retaddr);
-}
-
-hwaddr uc32_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
-{
- error_report("function uc32_cpu_get_phys_page_debug not "
- "implemented, aborting");
- return -1;
-}
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