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-rw-r--r--target-arm/op_helper.c688
1 files changed, 0 insertions, 688 deletions
diff --git a/target-arm/op_helper.c b/target-arm/op_helper.c
deleted file mode 100644
index 36de55b..0000000
--- a/target-arm/op_helper.c
+++ /dev/null
@@ -1,688 +0,0 @@
-/*
- * ARM helper routines
- *
- * Copyright (c) 2005-2007 CodeSourcery, LLC
- *
- * 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 "exec.h"
-#include "helpers.h"
-
-#define SIGNBIT (uint32_t)0x80000000
-#define SIGNBIT64 ((uint64_t)1 << 63)
-
-void raise_exception(int tt)
-{
- env->exception_index = tt;
- cpu_loop_exit();
-}
-
-/* thread support */
-
-spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED;
-
-void cpu_lock(void)
-{
- spin_lock(&global_cpu_lock);
-}
-
-void cpu_unlock(void)
-{
- spin_unlock(&global_cpu_lock);
-}
-
-uint32_t HELPER(neon_tbl)(uint32_t ireg, uint32_t def,
- uint32_t rn, uint32_t maxindex)
-{
- uint32_t val;
- uint32_t tmp;
- int index;
- int shift;
- uint64_t *table;
- table = (uint64_t *)&env->vfp.regs[rn];
- val = 0;
- for (shift = 0; shift < 32; shift += 8) {
- index = (ireg >> shift) & 0xff;
- if (index < maxindex) {
- tmp = (table[index >> 3] >> (index & 7)) & 0xff;
- val |= tmp << shift;
- } else {
- val |= def & (0xff << shift);
- }
- }
- return val;
-}
-
-#if !defined(CONFIG_USER_ONLY)
-
-static void do_unaligned_access (target_ulong addr, int is_write, int is_user, void *retaddr);
-
-#define MMUSUFFIX _mmu
-#define ALIGNED_ONLY 1
-
-#define SHIFT 0
-#include "softmmu_template.h"
-
-#define SHIFT 1
-#include "softmmu_template.h"
-
-#define SHIFT 2
-#include "softmmu_template.h"
-
-#define SHIFT 3
-#include "softmmu_template.h"
-
-static void do_unaligned_access (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
-{
- //printf("::UNALIGNED:: addr=%lx is_write=%d is_user=%d retaddr=%p\n", addr, is_write, is_user, retaddr);
- if (mmu_idx)
- {
- env = cpu_single_env;
- env->cp15.c5_data = 0x00000001; /* corresponds to an alignment fault */
- env->cp15.c6_data = addr;
- env->exception_index = EXCP_DATA_ABORT;
- cpu_loop_exit();
- }
-}
-
-/* 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) */
-/* XXX: fix it to restore all registers */
-void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
-{
- TranslationBlock *tb;
- CPUState *saved_env;
- unsigned long pc;
- int ret;
-
- /* XXX: hack to restore env in all cases, even if not called from
- generated code */
- saved_env = env;
- env = cpu_single_env;
- ret = cpu_arm_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
- if (unlikely(ret)) {
- if (retaddr) {
- /* now we have a real cpu fault */
- pc = (unsigned long)retaddr;
- tb = tb_find_pc(pc);
- if (tb) {
- /* the PC is inside the translated code. It means that we have
- a virtual CPU fault */
- cpu_restore_state(tb, env, pc, NULL);
- }
- }
- raise_exception(env->exception_index);
- }
- env = saved_env;
-}
-
-#if 1
-#include <string.h>
-/*
- * The following functions are address translation helper functions
- * for fast memory access in QEMU.
- */
-static target_phys_addr_t v2p_mmu(target_ulong addr, int mmu_idx)
-{
- int index;
- target_ulong tlb_addr;
- target_phys_addr_t physaddr;
- void *retaddr;
-
- index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
-redo:
- tlb_addr = env->tlb_table[mmu_idx][index].addr_read;
- if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
- physaddr = addr + env->tlb_table[mmu_idx][index].addend;
- } else {
- /* the page is not in the TLB : fill it */
- retaddr = GETPC();
- tlb_fill(addr, 0, mmu_idx, retaddr);
- goto redo;
- }
- return physaddr;
-}
-
-/*
- * translation from virtual address of simulated OS
- * to the address of simulation host (not the physical
- * address of simulated OS.
- */
-target_phys_addr_t v2p(target_ulong ptr, int mmu_idx)
-{
- CPUState *saved_env;
- int index;
- target_ulong addr;
- target_phys_addr_t physaddr;
-
- saved_env = env;
- env = cpu_single_env;
- addr = ptr;
- index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
- if (__builtin_expect(env->tlb_table[mmu_idx][index].addr_read !=
- (addr & TARGET_PAGE_MASK), 0))
- {
- physaddr = v2p_mmu(addr, mmu_idx);
- } else {
- physaddr = (target_phys_addr_t)addr + env->tlb_table[mmu_idx][index].addend;
- }
- env = saved_env;
- return physaddr;
-}
-
-#define MINSIZE(x,y) ((x) < (y) ? (x) : (y))
-/* copy memory from the simulated virtual space to a buffer in QEMU */
-void vmemcpy(target_ulong ptr, char *buf, int size)
-{
- if (buf == NULL) return;
- while (size) {
- int page_remain = TARGET_PAGE_SIZE - (ptr & ~TARGET_PAGE_MASK);
- int to_copy = MINSIZE(size, page_remain);
- char *phys = (char *)v2p(ptr, 0);
- if (phys == NULL) return;
- memcpy(buf, phys, to_copy);
- ptr += to_copy;
- buf += to_copy;
- size -= to_copy;
- }
-}
-
-/* copy memory from the QEMU buffer to simulated virtual space */
-void pmemcpy(target_ulong ptr, const char *buf, int size)
-{
- if (buf == NULL) return;
- while (size) {
- int page_remain = TARGET_PAGE_SIZE - (ptr & ~TARGET_PAGE_MASK);
- int to_copy = MINSIZE(size, page_remain);
- char *phys = (char *)v2p(ptr, 0);
- if (phys == NULL) return;
- memcpy(phys, buf, to_copy);
- ptr += to_copy;
- buf += to_copy;
- size -= to_copy;
- }
-}
-
-/* copy a string from the simulated virtual space to a buffer in QEMU */
-void vstrcpy(target_ulong ptr, char *buf, int max)
-{
- char *phys = 0;
- unsigned long page = 0;
-
- if (buf == NULL) return;
-
- while (max) {
- if ((ptr & TARGET_PAGE_MASK) != page) {
- phys = (char *)v2p(ptr, 0);
- page = ptr & TARGET_PAGE_MASK;
- }
- *buf = *phys;
- if (*phys == '\0')
- return;
- ptr ++;
- buf ++;
- phys ++;
- max --;
- }
-}
-#endif
-#endif
-
-/* FIXME: Pass an axplicit pointer to QF to CPUState, and move saturating
- instructions into helper.c */
-uint32_t HELPER(add_setq)(uint32_t a, uint32_t b)
-{
- uint32_t res = a + b;
- if (((res ^ a) & SIGNBIT) && !((a ^ b) & SIGNBIT))
- env->QF = 1;
- return res;
-}
-
-uint32_t HELPER(add_saturate)(uint32_t a, uint32_t b)
-{
- uint32_t res = a + b;
- if (((res ^ a) & SIGNBIT) && !((a ^ b) & SIGNBIT)) {
- env->QF = 1;
- res = ~(((int32_t)a >> 31) ^ SIGNBIT);
- }
- return res;
-}
-
-uint32_t HELPER(sub_saturate)(uint32_t a, uint32_t b)
-{
- uint32_t res = a - b;
- if (((res ^ a) & SIGNBIT) && ((a ^ b) & SIGNBIT)) {
- env->QF = 1;
- res = ~(((int32_t)a >> 31) ^ SIGNBIT);
- }
- return res;
-}
-
-uint32_t HELPER(double_saturate)(int32_t val)
-{
- uint32_t res;
- if (val >= 0x40000000) {
- res = ~SIGNBIT;
- env->QF = 1;
- } else if (val <= (int32_t)0xc0000000) {
- res = SIGNBIT;
- env->QF = 1;
- } else {
- res = val << 1;
- }
- return res;
-}
-
-uint32_t HELPER(add_usaturate)(uint32_t a, uint32_t b)
-{
- uint32_t res = a + b;
- if (res < a) {
- env->QF = 1;
- res = ~0;
- }
- return res;
-}
-
-uint32_t HELPER(sub_usaturate)(uint32_t a, uint32_t b)
-{
- uint32_t res = a - b;
- if (res > a) {
- env->QF = 1;
- res = 0;
- }
- return res;
-}
-
-/* Signed saturation. */
-static inline uint32_t do_ssat(int32_t val, int shift)
-{
- int32_t top;
- uint32_t mask;
-
- top = val >> shift;
- mask = (1u << shift) - 1;
- if (top > 0) {
- env->QF = 1;
- return mask;
- } else if (top < -1) {
- env->QF = 1;
- return ~mask;
- }
- return val;
-}
-
-/* Unsigned saturation. */
-static inline uint32_t do_usat(int32_t val, int shift)
-{
- uint32_t max;
-
- max = (1u << shift) - 1;
- if (val < 0) {
- env->QF = 1;
- return 0;
- } else if (val > max) {
- env->QF = 1;
- return max;
- }
- return val;
-}
-
-/* Signed saturate. */
-uint32_t HELPER(ssat)(uint32_t x, uint32_t shift)
-{
- return do_ssat(x, shift);
-}
-
-/* Dual halfword signed saturate. */
-uint32_t HELPER(ssat16)(uint32_t x, uint32_t shift)
-{
- uint32_t res;
-
- res = (uint16_t)do_ssat((int16_t)x, shift);
- res |= do_ssat(((int32_t)x) >> 16, shift) << 16;
- return res;
-}
-
-/* Unsigned saturate. */
-uint32_t HELPER(usat)(uint32_t x, uint32_t shift)
-{
- return do_usat(x, shift);
-}
-
-/* Dual halfword unsigned saturate. */
-uint32_t HELPER(usat16)(uint32_t x, uint32_t shift)
-{
- uint32_t res;
-
- res = (uint16_t)do_usat((int16_t)x, shift);
- res |= do_usat(((int32_t)x) >> 16, shift) << 16;
- return res;
-}
-
-void HELPER(wfi)(void)
-{
- env->exception_index = EXCP_HLT;
- env->halted = 1;
- cpu_loop_exit();
-}
-
-void HELPER(exception)(uint32_t excp)
-{
- env->exception_index = excp;
- cpu_loop_exit();
-}
-
-uint32_t HELPER(cpsr_read)(void)
-{
- return cpsr_read(env) & ~CPSR_EXEC;
-}
-
-void HELPER(cpsr_write)(uint32_t val, uint32_t mask)
-{
- cpsr_write(env, val, mask);
-}
-
-/* Access to user mode registers from privileged modes. */
-uint32_t HELPER(get_user_reg)(uint32_t regno)
-{
- uint32_t val;
-
- if (regno == 13) {
- val = env->banked_r13[0];
- } else if (regno == 14) {
- val = env->banked_r14[0];
- } else if (regno >= 8
- && (env->uncached_cpsr & 0x1f) == ARM_CPU_MODE_FIQ) {
- val = env->usr_regs[regno - 8];
- } else {
- val = env->regs[regno];
- }
- return val;
-}
-
-void HELPER(set_user_reg)(uint32_t regno, uint32_t val)
-{
- if (regno == 13) {
- env->banked_r13[0] = val;
- } else if (regno == 14) {
- env->banked_r14[0] = val;
- } else if (regno >= 8
- && (env->uncached_cpsr & 0x1f) == ARM_CPU_MODE_FIQ) {
- env->usr_regs[regno - 8] = val;
- } else {
- env->regs[regno] = val;
- }
-}
-
-/* ??? Flag setting arithmetic is awkward because we need to do comparisons.
- The only way to do that in TCG is a conditional branch, which clobbers
- all our temporaries. For now implement these as helper functions. */
-
-uint32_t HELPER (add_cc)(uint32_t a, uint32_t b)
-{
- uint32_t result;
- result = T0 + T1;
- env->NF = env->ZF = result;
- env->CF = result < a;
- env->VF = (a ^ b ^ -1) & (a ^ result);
- return result;
-}
-
-uint32_t HELPER(adc_cc)(uint32_t a, uint32_t b)
-{
- uint32_t result;
- if (!env->CF) {
- result = a + b;
- env->CF = result < a;
- } else {
- result = a + b + 1;
- env->CF = result <= a;
- }
- env->VF = (a ^ b ^ -1) & (a ^ result);
- env->NF = env->ZF = result;
- return result;
-}
-
-uint32_t HELPER(sub_cc)(uint32_t a, uint32_t b)
-{
- uint32_t result;
- result = a - b;
- env->NF = env->ZF = result;
- env->CF = a >= b;
- env->VF = (a ^ b) & (a ^ result);
- return result;
-}
-
-uint32_t HELPER(sbc_cc)(uint32_t a, uint32_t b)
-{
- uint32_t result;
- if (!env->CF) {
- result = a - b - 1;
- env->CF = a > b;
- } else {
- result = a - b;
- env->CF = a >= b;
- }
- env->VF = (a ^ b) & (a ^ result);
- env->NF = env->ZF = result;
- return result;
-}
-
-/* Similarly for variable shift instructions. */
-
-uint32_t HELPER(shl)(uint32_t x, uint32_t i)
-{
- int shift = i & 0xff;
- if (shift >= 32)
- return 0;
- return x << shift;
-}
-
-uint32_t HELPER(shr)(uint32_t x, uint32_t i)
-{
- int shift = i & 0xff;
- if (shift >= 32)
- return 0;
- return (uint32_t)x >> shift;
-}
-
-uint32_t HELPER(sar)(uint32_t x, uint32_t i)
-{
- int shift = i & 0xff;
- if (shift >= 32)
- shift = 31;
- return (int32_t)x >> shift;
-}
-
-uint32_t HELPER(ror)(uint32_t x, uint32_t i)
-{
- int shift = i & 0xff;
- if (shift == 0)
- return x;
- return (x >> shift) | (x << (32 - shift));
-}
-
-uint32_t HELPER(shl_cc)(uint32_t x, uint32_t i)
-{
- int shift = i & 0xff;
- if (shift >= 32) {
- if (shift == 32)
- env->CF = x & 1;
- else
- env->CF = 0;
- return 0;
- } else if (shift != 0) {
- env->CF = (x >> (32 - shift)) & 1;
- return x << shift;
- }
- return x;
-}
-
-uint32_t HELPER(shr_cc)(uint32_t x, uint32_t i)
-{
- int shift = i & 0xff;
- if (shift >= 32) {
- if (shift == 32)
- env->CF = (x >> 31) & 1;
- else
- env->CF = 0;
- return 0;
- } else if (shift != 0) {
- env->CF = (x >> (shift - 1)) & 1;
- return x >> shift;
- }
- return x;
-}
-
-uint32_t HELPER(sar_cc)(uint32_t x, uint32_t i)
-{
- int shift = i & 0xff;
- if (shift >= 32) {
- env->CF = (x >> 31) & 1;
- return (int32_t)x >> 31;
- } else if (shift != 0) {
- env->CF = (x >> (shift - 1)) & 1;
- return (int32_t)x >> shift;
- }
- return x;
-}
-
-uint32_t HELPER(ror_cc)(uint32_t x, uint32_t i)
-{
- int shift1, shift;
- shift1 = i & 0xff;
- shift = shift1 & 0x1f;
- if (shift == 0) {
- if (shift1 != 0)
- env->CF = (x >> 31) & 1;
- return x;
- } else {
- env->CF = (x >> (shift - 1)) & 1;
- return ((uint32_t)x >> shift) | (x << (32 - shift));
- }
-}
-
-uint64_t HELPER(neon_add_saturate_s64)(uint64_t src1, uint64_t src2)
-{
- uint64_t res;
-
- res = src1 + src2;
- if (((res ^ src1) & SIGNBIT64) && !((src1 ^ src2) & SIGNBIT64)) {
- env->QF = 1;
- res = ((int64_t)src1 >> 63) ^ ~SIGNBIT64;
- }
- return res;
-}
-
-uint64_t HELPER(neon_add_saturate_u64)(uint64_t src1, uint64_t src2)
-{
- uint64_t res;
-
- res = src1 + src2;
- if (res < src1) {
- env->QF = 1;
- res = ~(uint64_t)0;
- }
- return res;
-}
-
-uint64_t HELPER(neon_sub_saturate_s64)(uint64_t src1, uint64_t src2)
-{
- uint64_t res;
-
- res = src1 - src2;
- if (((res ^ src1) & SIGNBIT64) && ((src1 ^ src2) & SIGNBIT64)) {
- env->QF = 1;
- res = ((int64_t)src1 >> 63) ^ ~SIGNBIT64;
- }
- return res;
-}
-
-uint64_t HELPER(neon_sub_saturate_u64)(uint64_t src1, uint64_t src2)
-{
- uint64_t res;
-
- if (src1 < src2) {
- env->QF = 1;
- res = 0;
- } else {
- res = src1 - src2;
- }
- return res;
-}
-
-/* These need to return a pair of value, so still use T0/T1. */
-/* Transpose. Argument order is rather strange to avoid special casing
- the tranlation code.
- On input T0 = rm, T1 = rd. On output T0 = rd, T1 = rm */
-void HELPER(neon_trn_u8)(void)
-{
- uint32_t rd;
- uint32_t rm;
- rd = ((T0 & 0x00ff00ff) << 8) | (T1 & 0x00ff00ff);
- rm = ((T1 & 0xff00ff00) >> 8) | (T0 & 0xff00ff00);
- T0 = rd;
- T1 = rm;
- FORCE_RET();
-}
-
-void HELPER(neon_trn_u16)(void)
-{
- uint32_t rd;
- uint32_t rm;
- rd = (T0 << 16) | (T1 & 0xffff);
- rm = (T1 >> 16) | (T0 & 0xffff0000);
- T0 = rd;
- T1 = rm;
- FORCE_RET();
-}
-
-/* Worker routines for zip and unzip. */
-void HELPER(neon_unzip_u8)(void)
-{
- uint32_t rd;
- uint32_t rm;
- rd = (T0 & 0xff) | ((T0 >> 8) & 0xff00)
- | ((T1 << 16) & 0xff0000) | ((T1 << 8) & 0xff000000);
- rm = ((T0 >> 8) & 0xff) | ((T0 >> 16) & 0xff00)
- | ((T1 << 8) & 0xff0000) | (T1 & 0xff000000);
- T0 = rd;
- T1 = rm;
- FORCE_RET();
-}
-
-void HELPER(neon_zip_u8)(void)
-{
- uint32_t rd;
- uint32_t rm;
- rd = (T0 & 0xff) | ((T1 << 8) & 0xff00)
- | ((T0 << 16) & 0xff0000) | ((T1 << 24) & 0xff000000);
- rm = ((T0 >> 16) & 0xff) | ((T1 >> 8) & 0xff00)
- | ((T0 >> 8) & 0xff0000) | (T1 & 0xff000000);
- T0 = rd;
- T1 = rm;
- FORCE_RET();
-}
-
-void HELPER(neon_zip_u16)(void)
-{
- uint32_t tmp;
-
- tmp = (T0 & 0xffff) | (T1 << 16);
- T1 = (T1 & 0xffff0000) | (T0 >> 16);
- T0 = tmp;
- FORCE_RET();
-}
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