diff options
Diffstat (limited to 'target-microblaze/op_helper.c')
| -rw-r--r-- | target-microblaze/op_helper.c | 523 |
1 files changed, 0 insertions, 523 deletions
diff --git a/target-microblaze/op_helper.c b/target-microblaze/op_helper.c deleted file mode 100644 index 4a856e6204..0000000000 --- a/target-microblaze/op_helper.c +++ /dev/null @@ -1,523 +0,0 @@ -/* - * Microblaze helper routines. - * - * Copyright (c) 2009 Edgar E. Iglesias <edgar.iglesias@gmail.com>. - * Copyright (c) 2009-2012 PetaLogix Qld Pty Ltd. - * - * 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 "qemu/host-utils.h" -#include "exec/exec-all.h" -#include "exec/cpu_ldst.h" - -#define D(x) - -#if !defined(CONFIG_USER_ONLY) - -/* 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 = mb_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); - } -} -#endif - -void helper_put(uint32_t id, uint32_t ctrl, uint32_t data) -{ - int test = ctrl & STREAM_TEST; - int atomic = ctrl & STREAM_ATOMIC; - int control = ctrl & STREAM_CONTROL; - int nonblock = ctrl & STREAM_NONBLOCK; - int exception = ctrl & STREAM_EXCEPTION; - - qemu_log_mask(LOG_UNIMP, "Unhandled stream put to stream-id=%d data=%x %s%s%s%s%s\n", - id, data, - test ? "t" : "", - nonblock ? "n" : "", - exception ? "e" : "", - control ? "c" : "", - atomic ? "a" : ""); -} - -uint32_t helper_get(uint32_t id, uint32_t ctrl) -{ - int test = ctrl & STREAM_TEST; - int atomic = ctrl & STREAM_ATOMIC; - int control = ctrl & STREAM_CONTROL; - int nonblock = ctrl & STREAM_NONBLOCK; - int exception = ctrl & STREAM_EXCEPTION; - - qemu_log_mask(LOG_UNIMP, "Unhandled stream get from stream-id=%d %s%s%s%s%s\n", - id, - test ? "t" : "", - nonblock ? "n" : "", - exception ? "e" : "", - control ? "c" : "", - atomic ? "a" : ""); - return 0xdead0000 | id; -} - -void helper_raise_exception(CPUMBState *env, uint32_t index) -{ - CPUState *cs = CPU(mb_env_get_cpu(env)); - - cs->exception_index = index; - cpu_loop_exit(cs); -} - -void helper_debug(CPUMBState *env) -{ - int i; - - qemu_log("PC=%8.8x\n", env->sregs[SR_PC]); - qemu_log("rmsr=%x resr=%x rear=%x debug[%x] imm=%x iflags=%x\n", - env->sregs[SR_MSR], env->sregs[SR_ESR], env->sregs[SR_EAR], - env->debug, env->imm, env->iflags); - qemu_log("btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n", - env->btaken, env->btarget, - (env->sregs[SR_MSR] & MSR_UM) ? "user" : "kernel", - (env->sregs[SR_MSR] & MSR_UMS) ? "user" : "kernel", - (env->sregs[SR_MSR] & MSR_EIP), - (env->sregs[SR_MSR] & MSR_IE)); - for (i = 0; i < 32; i++) { - qemu_log("r%2.2d=%8.8x ", i, env->regs[i]); - if ((i + 1) % 4 == 0) - qemu_log("\n"); - } - qemu_log("\n\n"); -} - -static inline uint32_t compute_carry(uint32_t a, uint32_t b, uint32_t cin) -{ - uint32_t cout = 0; - - if ((b == ~0) && cin) - cout = 1; - else if ((~0 - a) < (b + cin)) - cout = 1; - return cout; -} - -uint32_t helper_cmp(uint32_t a, uint32_t b) -{ - uint32_t t; - - t = b + ~a + 1; - if ((b & 0x80000000) ^ (a & 0x80000000)) - t = (t & 0x7fffffff) | (b & 0x80000000); - return t; -} - -uint32_t helper_cmpu(uint32_t a, uint32_t b) -{ - uint32_t t; - - t = b + ~a + 1; - if ((b & 0x80000000) ^ (a & 0x80000000)) - t = (t & 0x7fffffff) | (a & 0x80000000); - return t; -} - -uint32_t helper_clz(uint32_t t0) -{ - return clz32(t0); -} - -uint32_t helper_carry(uint32_t a, uint32_t b, uint32_t cf) -{ - return compute_carry(a, b, cf); -} - -static inline int div_prepare(CPUMBState *env, uint32_t a, uint32_t b) -{ - if (b == 0) { - env->sregs[SR_MSR] |= MSR_DZ; - - if ((env->sregs[SR_MSR] & MSR_EE) - && !(env->pvr.regs[2] & PVR2_DIV_ZERO_EXC_MASK)) { - env->sregs[SR_ESR] = ESR_EC_DIVZERO; - helper_raise_exception(env, EXCP_HW_EXCP); - } - return 0; - } - env->sregs[SR_MSR] &= ~MSR_DZ; - return 1; -} - -uint32_t helper_divs(CPUMBState *env, uint32_t a, uint32_t b) -{ - if (!div_prepare(env, a, b)) { - return 0; - } - return (int32_t)a / (int32_t)b; -} - -uint32_t helper_divu(CPUMBState *env, uint32_t a, uint32_t b) -{ - if (!div_prepare(env, a, b)) { - return 0; - } - return a / b; -} - -/* raise FPU exception. */ -static void raise_fpu_exception(CPUMBState *env) -{ - env->sregs[SR_ESR] = ESR_EC_FPU; - helper_raise_exception(env, EXCP_HW_EXCP); -} - -static void update_fpu_flags(CPUMBState *env, int flags) -{ - int raise = 0; - - if (flags & float_flag_invalid) { - env->sregs[SR_FSR] |= FSR_IO; - raise = 1; - } - if (flags & float_flag_divbyzero) { - env->sregs[SR_FSR] |= FSR_DZ; - raise = 1; - } - if (flags & float_flag_overflow) { - env->sregs[SR_FSR] |= FSR_OF; - raise = 1; - } - if (flags & float_flag_underflow) { - env->sregs[SR_FSR] |= FSR_UF; - raise = 1; - } - if (raise - && (env->pvr.regs[2] & PVR2_FPU_EXC_MASK) - && (env->sregs[SR_MSR] & MSR_EE)) { - raise_fpu_exception(env); - } -} - -uint32_t helper_fadd(CPUMBState *env, uint32_t a, uint32_t b) -{ - CPU_FloatU fd, fa, fb; - int flags; - - set_float_exception_flags(0, &env->fp_status); - fa.l = a; - fb.l = b; - fd.f = float32_add(fa.f, fb.f, &env->fp_status); - - flags = get_float_exception_flags(&env->fp_status); - update_fpu_flags(env, flags); - return fd.l; -} - -uint32_t helper_frsub(CPUMBState *env, uint32_t a, uint32_t b) -{ - CPU_FloatU fd, fa, fb; - int flags; - - set_float_exception_flags(0, &env->fp_status); - fa.l = a; - fb.l = b; - fd.f = float32_sub(fb.f, fa.f, &env->fp_status); - flags = get_float_exception_flags(&env->fp_status); - update_fpu_flags(env, flags); - return fd.l; -} - -uint32_t helper_fmul(CPUMBState *env, uint32_t a, uint32_t b) -{ - CPU_FloatU fd, fa, fb; - int flags; - - set_float_exception_flags(0, &env->fp_status); - fa.l = a; - fb.l = b; - fd.f = float32_mul(fa.f, fb.f, &env->fp_status); - flags = get_float_exception_flags(&env->fp_status); - update_fpu_flags(env, flags); - - return fd.l; -} - -uint32_t helper_fdiv(CPUMBState *env, uint32_t a, uint32_t b) -{ - CPU_FloatU fd, fa, fb; - int flags; - - set_float_exception_flags(0, &env->fp_status); - fa.l = a; - fb.l = b; - fd.f = float32_div(fb.f, fa.f, &env->fp_status); - flags = get_float_exception_flags(&env->fp_status); - update_fpu_flags(env, flags); - - return fd.l; -} - -uint32_t helper_fcmp_un(CPUMBState *env, uint32_t a, uint32_t b) -{ - CPU_FloatU fa, fb; - uint32_t r = 0; - - fa.l = a; - fb.l = b; - - if (float32_is_signaling_nan(fa.f, &env->fp_status) || - float32_is_signaling_nan(fb.f, &env->fp_status)) { - update_fpu_flags(env, float_flag_invalid); - r = 1; - } - - if (float32_is_quiet_nan(fa.f, &env->fp_status) || - float32_is_quiet_nan(fb.f, &env->fp_status)) { - r = 1; - } - - return r; -} - -uint32_t helper_fcmp_lt(CPUMBState *env, uint32_t a, uint32_t b) -{ - CPU_FloatU fa, fb; - int r; - int flags; - - set_float_exception_flags(0, &env->fp_status); - fa.l = a; - fb.l = b; - r = float32_lt(fb.f, fa.f, &env->fp_status); - flags = get_float_exception_flags(&env->fp_status); - update_fpu_flags(env, flags & float_flag_invalid); - - return r; -} - -uint32_t helper_fcmp_eq(CPUMBState *env, uint32_t a, uint32_t b) -{ - CPU_FloatU fa, fb; - int flags; - int r; - - set_float_exception_flags(0, &env->fp_status); - fa.l = a; - fb.l = b; - r = float32_eq_quiet(fa.f, fb.f, &env->fp_status); - flags = get_float_exception_flags(&env->fp_status); - update_fpu_flags(env, flags & float_flag_invalid); - - return r; -} - -uint32_t helper_fcmp_le(CPUMBState *env, uint32_t a, uint32_t b) -{ - CPU_FloatU fa, fb; - int flags; - int r; - - fa.l = a; - fb.l = b; - set_float_exception_flags(0, &env->fp_status); - r = float32_le(fa.f, fb.f, &env->fp_status); - flags = get_float_exception_flags(&env->fp_status); - update_fpu_flags(env, flags & float_flag_invalid); - - - return r; -} - -uint32_t helper_fcmp_gt(CPUMBState *env, uint32_t a, uint32_t b) -{ - CPU_FloatU fa, fb; - int flags, r; - - fa.l = a; - fb.l = b; - set_float_exception_flags(0, &env->fp_status); - r = float32_lt(fa.f, fb.f, &env->fp_status); - flags = get_float_exception_flags(&env->fp_status); - update_fpu_flags(env, flags & float_flag_invalid); - return r; -} - -uint32_t helper_fcmp_ne(CPUMBState *env, uint32_t a, uint32_t b) -{ - CPU_FloatU fa, fb; - int flags, r; - - fa.l = a; - fb.l = b; - set_float_exception_flags(0, &env->fp_status); - r = !float32_eq_quiet(fa.f, fb.f, &env->fp_status); - flags = get_float_exception_flags(&env->fp_status); - update_fpu_flags(env, flags & float_flag_invalid); - - return r; -} - -uint32_t helper_fcmp_ge(CPUMBState *env, uint32_t a, uint32_t b) -{ - CPU_FloatU fa, fb; - int flags, r; - - fa.l = a; - fb.l = b; - set_float_exception_flags(0, &env->fp_status); - r = !float32_lt(fa.f, fb.f, &env->fp_status); - flags = get_float_exception_flags(&env->fp_status); - update_fpu_flags(env, flags & float_flag_invalid); - - return r; -} - -uint32_t helper_flt(CPUMBState *env, uint32_t a) -{ - CPU_FloatU fd, fa; - - fa.l = a; - fd.f = int32_to_float32(fa.l, &env->fp_status); - return fd.l; -} - -uint32_t helper_fint(CPUMBState *env, uint32_t a) -{ - CPU_FloatU fa; - uint32_t r; - int flags; - - set_float_exception_flags(0, &env->fp_status); - fa.l = a; - r = float32_to_int32(fa.f, &env->fp_status); - flags = get_float_exception_flags(&env->fp_status); - update_fpu_flags(env, flags); - - return r; -} - -uint32_t helper_fsqrt(CPUMBState *env, uint32_t a) -{ - CPU_FloatU fd, fa; - int flags; - - set_float_exception_flags(0, &env->fp_status); - fa.l = a; - fd.l = float32_sqrt(fa.f, &env->fp_status); - flags = get_float_exception_flags(&env->fp_status); - update_fpu_flags(env, flags); - - return fd.l; -} - -uint32_t helper_pcmpbf(uint32_t a, uint32_t b) -{ - unsigned int i; - uint32_t mask = 0xff000000; - - for (i = 0; i < 4; i++) { - if ((a & mask) == (b & mask)) - return i + 1; - mask >>= 8; - } - return 0; -} - -void helper_memalign(CPUMBState *env, uint32_t addr, uint32_t dr, uint32_t wr, - uint32_t mask) -{ - if (addr & mask) { - qemu_log_mask(CPU_LOG_INT, - "unaligned access addr=%x mask=%x, wr=%d dr=r%d\n", - addr, mask, wr, dr); - env->sregs[SR_EAR] = addr; - env->sregs[SR_ESR] = ESR_EC_UNALIGNED_DATA | (wr << 10) \ - | (dr & 31) << 5; - if (mask == 3) { - env->sregs[SR_ESR] |= 1 << 11; - } - if (!(env->sregs[SR_MSR] & MSR_EE)) { - return; - } - helper_raise_exception(env, EXCP_HW_EXCP); - } -} - -void helper_stackprot(CPUMBState *env, uint32_t addr) -{ - if (addr < env->slr || addr > env->shr) { - qemu_log_mask(CPU_LOG_INT, "Stack protector violation at %x %x %x\n", - addr, env->slr, env->shr); - env->sregs[SR_EAR] = addr; - env->sregs[SR_ESR] = ESR_EC_STACKPROT; - helper_raise_exception(env, EXCP_HW_EXCP); - } -} - -#if !defined(CONFIG_USER_ONLY) -/* Writes/reads to the MMU's special regs end up here. */ -uint32_t helper_mmu_read(CPUMBState *env, uint32_t rn) -{ - return mmu_read(env, rn); -} - -void helper_mmu_write(CPUMBState *env, uint32_t rn, uint32_t v) -{ - mmu_write(env, rn, v); -} - -void mb_cpu_unassigned_access(CPUState *cs, hwaddr addr, - bool is_write, bool is_exec, int is_asi, - unsigned size) -{ - MicroBlazeCPU *cpu; - CPUMBState *env; - - qemu_log_mask(CPU_LOG_INT, "Unassigned " TARGET_FMT_plx " wr=%d exe=%d\n", - addr, is_write ? 1 : 0, is_exec ? 1 : 0); - if (cs == NULL) { - return; - } - cpu = MICROBLAZE_CPU(cs); - env = &cpu->env; - if (!(env->sregs[SR_MSR] & MSR_EE)) { - return; - } - - env->sregs[SR_EAR] = addr; - if (is_exec) { - if ((env->pvr.regs[2] & PVR2_IOPB_BUS_EXC_MASK)) { - env->sregs[SR_ESR] = ESR_EC_INSN_BUS; - helper_raise_exception(env, EXCP_HW_EXCP); - } - } else { - if ((env->pvr.regs[2] & PVR2_DOPB_BUS_EXC_MASK)) { - env->sregs[SR_ESR] = ESR_EC_DATA_BUS; - helper_raise_exception(env, EXCP_HW_EXCP); - } - } -} -#endif |