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atomic_common.c.inc (3244B)

      1 /*
      2  * Common Atomic Helper Functions
      3  *
      4  * This file should be included before the various instantiations of
      5  * the atomic_template.h helpers.
      6  *
      7  * Copyright (c) 2019 Linaro
      8  * Written by Alex Bennée <alex.bennee@linaro.org>
      9  *
     10  * SPDX-License-Identifier: GPL-2.0-or-later
     11  *
     12  * This work is licensed under the terms of the GNU GPL, version 2 or later.
     13  * See the COPYING file in the top-level directory.
     14  */
     15 
     16 static void atomic_trace_rmw_post(CPUArchState *env, target_ulong addr,
     17                                   MemOpIdx oi)
     18 {
     19     qemu_plugin_vcpu_mem_cb(env_cpu(env), addr, oi, QEMU_PLUGIN_MEM_RW);
     20 }
     21 
     22 #if HAVE_ATOMIC128
     23 static void atomic_trace_ld_post(CPUArchState *env, target_ulong addr,
     24                                  MemOpIdx oi)
     25 {
     26     qemu_plugin_vcpu_mem_cb(env_cpu(env), addr, oi, QEMU_PLUGIN_MEM_R);
     27 }
     28 
     29 static void atomic_trace_st_post(CPUArchState *env, target_ulong addr,
     30                                  MemOpIdx oi)
     31 {
     32     qemu_plugin_vcpu_mem_cb(env_cpu(env), addr, oi, QEMU_PLUGIN_MEM_W);
     33 }
     34 #endif
     35 
     36 /*
     37  * Atomic helpers callable from TCG.
     38  * These have a common interface and all defer to cpu_atomic_*
     39  * using the host return address from GETPC().
     40  */
     41 
     42 #define CMPXCHG_HELPER(OP, TYPE) \
     43     TYPE HELPER(atomic_##OP)(CPUArchState *env, target_ulong addr,  \
     44                              TYPE oldv, TYPE newv, uint32_t oi)     \
     45     { return cpu_atomic_##OP##_mmu(env, addr, oldv, newv, oi, GETPC()); }
     46 
     47 CMPXCHG_HELPER(cmpxchgb, uint32_t)
     48 CMPXCHG_HELPER(cmpxchgw_be, uint32_t)
     49 CMPXCHG_HELPER(cmpxchgw_le, uint32_t)
     50 CMPXCHG_HELPER(cmpxchgl_be, uint32_t)
     51 CMPXCHG_HELPER(cmpxchgl_le, uint32_t)
     52 
     53 #ifdef CONFIG_ATOMIC64
     54 CMPXCHG_HELPER(cmpxchgq_be, uint64_t)
     55 CMPXCHG_HELPER(cmpxchgq_le, uint64_t)
     56 #endif
     57 
     58 #undef CMPXCHG_HELPER
     59 
     60 #define ATOMIC_HELPER(OP, TYPE) \
     61     TYPE HELPER(glue(atomic_,OP))(CPUArchState *env, target_ulong addr,  \
     62                                   TYPE val, uint32_t oi)                 \
     63     { return glue(glue(cpu_atomic_,OP),_mmu)(env, addr, val, oi, GETPC()); }
     64 
     65 #ifdef CONFIG_ATOMIC64
     66 #define GEN_ATOMIC_HELPERS(OP)              \
     67     ATOMIC_HELPER(glue(OP,b), uint32_t)     \
     68     ATOMIC_HELPER(glue(OP,w_be), uint32_t)  \
     69     ATOMIC_HELPER(glue(OP,w_le), uint32_t)  \
     70     ATOMIC_HELPER(glue(OP,l_be), uint32_t)  \
     71     ATOMIC_HELPER(glue(OP,l_le), uint32_t)  \
     72     ATOMIC_HELPER(glue(OP,q_be), uint64_t)  \
     73     ATOMIC_HELPER(glue(OP,q_le), uint64_t)
     74 #else
     75 #define GEN_ATOMIC_HELPERS(OP)              \
     76     ATOMIC_HELPER(glue(OP,b), uint32_t)     \
     77     ATOMIC_HELPER(glue(OP,w_be), uint32_t)  \
     78     ATOMIC_HELPER(glue(OP,w_le), uint32_t)  \
     79     ATOMIC_HELPER(glue(OP,l_be), uint32_t)  \
     80     ATOMIC_HELPER(glue(OP,l_le), uint32_t)
     81 #endif
     82 
     83 GEN_ATOMIC_HELPERS(fetch_add)
     84 GEN_ATOMIC_HELPERS(fetch_and)
     85 GEN_ATOMIC_HELPERS(fetch_or)
     86 GEN_ATOMIC_HELPERS(fetch_xor)
     87 GEN_ATOMIC_HELPERS(fetch_smin)
     88 GEN_ATOMIC_HELPERS(fetch_umin)
     89 GEN_ATOMIC_HELPERS(fetch_smax)
     90 GEN_ATOMIC_HELPERS(fetch_umax)
     91 
     92 GEN_ATOMIC_HELPERS(add_fetch)
     93 GEN_ATOMIC_HELPERS(and_fetch)
     94 GEN_ATOMIC_HELPERS(or_fetch)
     95 GEN_ATOMIC_HELPERS(xor_fetch)
     96 GEN_ATOMIC_HELPERS(smin_fetch)
     97 GEN_ATOMIC_HELPERS(umin_fetch)
     98 GEN_ATOMIC_HELPERS(smax_fetch)
     99 GEN_ATOMIC_HELPERS(umax_fetch)
    100 
    101 GEN_ATOMIC_HELPERS(xchg)
    102 
    103 #undef ATOMIC_HELPER
    104 #undef GEN_ATOMIC_HELPERS