diff options
Diffstat (limited to 'accel/tcg/tcg-runtime.c')
| -rw-r--r-- | accel/tcg/tcg-runtime.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/accel/tcg/tcg-runtime.c b/accel/tcg/tcg-runtime.c new file mode 100644 index 0000000..3e23649 --- /dev/null +++ b/accel/tcg/tcg-runtime.c @@ -0,0 +1,234 @@ +/* + * Tiny Code Generator for QEMU + * + * Copyright (c) 2008 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#include "qemu/osdep.h" +#include "qemu/host-utils.h" +#include "cpu.h" +#include "exec/helper-proto.h" +#include "exec/cpu_ldst.h" +#include "exec/exec-all.h" +#include "exec/tb-hash.h" +#include "disas/disas.h" +#include "exec/log.h" + +/* 32-bit helpers */ + +int32_t HELPER(div_i32)(int32_t arg1, int32_t arg2) +{ + return arg1 / arg2; +} + +int32_t HELPER(rem_i32)(int32_t arg1, int32_t arg2) +{ + return arg1 % arg2; +} + +uint32_t HELPER(divu_i32)(uint32_t arg1, uint32_t arg2) +{ + return arg1 / arg2; +} + +uint32_t HELPER(remu_i32)(uint32_t arg1, uint32_t arg2) +{ + return arg1 % arg2; +} + +/* 64-bit helpers */ + +uint64_t HELPER(shl_i64)(uint64_t arg1, uint64_t arg2) +{ + return arg1 << arg2; +} + +uint64_t HELPER(shr_i64)(uint64_t arg1, uint64_t arg2) +{ + return arg1 >> arg2; +} + +int64_t HELPER(sar_i64)(int64_t arg1, int64_t arg2) +{ + return arg1 >> arg2; +} + +int64_t HELPER(div_i64)(int64_t arg1, int64_t arg2) +{ + return arg1 / arg2; +} + +int64_t HELPER(rem_i64)(int64_t arg1, int64_t arg2) +{ + return arg1 % arg2; +} + +uint64_t HELPER(divu_i64)(uint64_t arg1, uint64_t arg2) +{ + return arg1 / arg2; +} + +uint64_t HELPER(remu_i64)(uint64_t arg1, uint64_t arg2) +{ + return arg1 % arg2; +} + +uint64_t HELPER(muluh_i64)(uint64_t arg1, uint64_t arg2) +{ + uint64_t l, h; + mulu64(&l, &h, arg1, arg2); + return h; +} + +int64_t HELPER(mulsh_i64)(int64_t arg1, int64_t arg2) +{ + uint64_t l, h; + muls64(&l, &h, arg1, arg2); + return h; +} + +uint32_t HELPER(clz_i32)(uint32_t arg, uint32_t zero_val) +{ + return arg ? clz32(arg) : zero_val; +} + +uint32_t HELPER(ctz_i32)(uint32_t arg, uint32_t zero_val) +{ + return arg ? ctz32(arg) : zero_val; +} + +uint64_t HELPER(clz_i64)(uint64_t arg, uint64_t zero_val) +{ + return arg ? clz64(arg) : zero_val; +} + +uint64_t HELPER(ctz_i64)(uint64_t arg, uint64_t zero_val) +{ + return arg ? ctz64(arg) : zero_val; +} + +uint32_t HELPER(clrsb_i32)(uint32_t arg) +{ + return clrsb32(arg); +} + +uint64_t HELPER(clrsb_i64)(uint64_t arg) +{ + return clrsb64(arg); +} + +uint32_t HELPER(ctpop_i32)(uint32_t arg) +{ + return ctpop32(arg); +} + +uint64_t HELPER(ctpop_i64)(uint64_t arg) +{ + return ctpop64(arg); +} + +void *HELPER(lookup_tb_ptr)(CPUArchState *env, target_ulong addr) +{ + CPUState *cpu = ENV_GET_CPU(env); + TranslationBlock *tb; + target_ulong cs_base, pc; + uint32_t flags, addr_hash; + + addr_hash = tb_jmp_cache_hash_func(addr); + tb = atomic_rcu_read(&cpu->tb_jmp_cache[addr_hash]); + cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags); + + if (unlikely(!(tb + && tb->pc == addr + && tb->cs_base == cs_base + && tb->flags == flags + && tb->trace_vcpu_dstate == *cpu->trace_dstate))) { + tb = tb_htable_lookup(cpu, addr, cs_base, flags); + if (!tb) { + return tcg_ctx.code_gen_epilogue; + } + atomic_set(&cpu->tb_jmp_cache[addr_hash], tb); + } + + qemu_log_mask_and_addr(CPU_LOG_EXEC, addr, + "Chain %p [%d: " TARGET_FMT_lx "] %s\n", + tb->tc_ptr, cpu->cpu_index, addr, + lookup_symbol(addr)); + return tb->tc_ptr; +} + +void HELPER(exit_atomic)(CPUArchState *env) +{ + cpu_loop_exit_atomic(ENV_GET_CPU(env), GETPC()); +} + +#ifndef CONFIG_SOFTMMU +/* The softmmu versions of these helpers are in cputlb.c. */ + +/* Do not allow unaligned operations to proceed. Return the host address. */ +static void *atomic_mmu_lookup(CPUArchState *env, target_ulong addr, + int size, uintptr_t retaddr) +{ + /* Enforce qemu required alignment. */ + if (unlikely(addr & (size - 1))) { + cpu_loop_exit_atomic(ENV_GET_CPU(env), retaddr); + } + return g2h(addr); +} + +/* Macro to call the above, with local variables from the use context. */ +#define ATOMIC_MMU_LOOKUP atomic_mmu_lookup(env, addr, DATA_SIZE, GETPC()) + +#define ATOMIC_NAME(X) HELPER(glue(glue(atomic_ ## X, SUFFIX), END)) +#define EXTRA_ARGS + +#define DATA_SIZE 1 +#include "atomic_template.h" + +#define DATA_SIZE 2 +#include "atomic_template.h" + +#define DATA_SIZE 4 +#include "atomic_template.h" + +#ifdef CONFIG_ATOMIC64 +#define DATA_SIZE 8 +#include "atomic_template.h" +#endif + +/* The following is only callable from other helpers, and matches up + with the softmmu version. */ + +#ifdef CONFIG_ATOMIC128 + +#undef EXTRA_ARGS +#undef ATOMIC_NAME +#undef ATOMIC_MMU_LOOKUP + +#define EXTRA_ARGS , TCGMemOpIdx oi, uintptr_t retaddr +#define ATOMIC_NAME(X) \ + HELPER(glue(glue(glue(atomic_ ## X, SUFFIX), END), _mmu)) +#define ATOMIC_MMU_LOOKUP atomic_mmu_lookup(env, addr, DATA_SIZE, retaddr) + +#define DATA_SIZE 16 +#include "atomic_template.h" +#endif /* CONFIG_ATOMIC128 */ + +#endif /* !CONFIG_SOFTMMU */ |