0583f775d2
There is no point in encoding load/store within a bit of the memory trace info operand. Represent atomic operations as a single read-modify-write tracepoint. Use MemOpIdx instead of inventing a form specifically for traces. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
125 lines
3.7 KiB
C++
125 lines
3.7 KiB
C++
/*
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* Common Atomic Helper Functions
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*
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* This file should be included before the various instantiations of
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* the atomic_template.h helpers.
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*
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* Copyright (c) 2019 Linaro
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* Written by Alex Bennée <alex.bennee@linaro.org>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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static void atomic_trace_rmw_pre(CPUArchState *env, target_ulong addr,
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MemOpIdx oi)
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{
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CPUState *cpu = env_cpu(env);
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trace_guest_rmw_before_exec(cpu, addr, oi);
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}
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static void atomic_trace_rmw_post(CPUArchState *env, target_ulong addr,
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MemOpIdx oi)
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{
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qemu_plugin_vcpu_mem_cb(env_cpu(env), addr, oi, QEMU_PLUGIN_MEM_RW);
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}
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#if HAVE_ATOMIC128
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static void atomic_trace_ld_pre(CPUArchState *env, target_ulong addr,
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MemOpIdx oi)
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{
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trace_guest_ld_before_exec(env_cpu(env), addr, oi);
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}
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static void atomic_trace_ld_post(CPUArchState *env, target_ulong addr,
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MemOpIdx oi)
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{
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qemu_plugin_vcpu_mem_cb(env_cpu(env), addr, oi, QEMU_PLUGIN_MEM_R);
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}
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static void atomic_trace_st_pre(CPUArchState *env, target_ulong addr,
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MemOpIdx oi)
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{
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trace_guest_st_before_exec(env_cpu(env), addr, oi);
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}
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static void atomic_trace_st_post(CPUArchState *env, target_ulong addr,
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MemOpIdx oi)
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{
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qemu_plugin_vcpu_mem_cb(env_cpu(env), addr, oi, QEMU_PLUGIN_MEM_W);
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}
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#endif
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/*
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* Atomic helpers callable from TCG.
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* These have a common interface and all defer to cpu_atomic_*
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* using the host return address from GETPC().
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*/
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#define CMPXCHG_HELPER(OP, TYPE) \
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TYPE HELPER(atomic_##OP)(CPUArchState *env, target_ulong addr, \
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TYPE oldv, TYPE newv, uint32_t oi) \
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{ return cpu_atomic_##OP##_mmu(env, addr, oldv, newv, oi, GETPC()); }
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CMPXCHG_HELPER(cmpxchgb, uint32_t)
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CMPXCHG_HELPER(cmpxchgw_be, uint32_t)
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CMPXCHG_HELPER(cmpxchgw_le, uint32_t)
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CMPXCHG_HELPER(cmpxchgl_be, uint32_t)
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CMPXCHG_HELPER(cmpxchgl_le, uint32_t)
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#ifdef CONFIG_ATOMIC64
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CMPXCHG_HELPER(cmpxchgq_be, uint64_t)
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CMPXCHG_HELPER(cmpxchgq_le, uint64_t)
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#endif
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#undef CMPXCHG_HELPER
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#define ATOMIC_HELPER(OP, TYPE) \
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TYPE HELPER(glue(atomic_,OP))(CPUArchState *env, target_ulong addr, \
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TYPE val, uint32_t oi) \
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{ return glue(glue(cpu_atomic_,OP),_mmu)(env, addr, val, oi, GETPC()); }
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#ifdef CONFIG_ATOMIC64
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#define GEN_ATOMIC_HELPERS(OP) \
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ATOMIC_HELPER(glue(OP,b), uint32_t) \
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ATOMIC_HELPER(glue(OP,w_be), uint32_t) \
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ATOMIC_HELPER(glue(OP,w_le), uint32_t) \
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ATOMIC_HELPER(glue(OP,l_be), uint32_t) \
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ATOMIC_HELPER(glue(OP,l_le), uint32_t) \
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ATOMIC_HELPER(glue(OP,q_be), uint64_t) \
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ATOMIC_HELPER(glue(OP,q_le), uint64_t)
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#else
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#define GEN_ATOMIC_HELPERS(OP) \
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ATOMIC_HELPER(glue(OP,b), uint32_t) \
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ATOMIC_HELPER(glue(OP,w_be), uint32_t) \
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ATOMIC_HELPER(glue(OP,w_le), uint32_t) \
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ATOMIC_HELPER(glue(OP,l_be), uint32_t) \
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ATOMIC_HELPER(glue(OP,l_le), uint32_t)
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#endif
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GEN_ATOMIC_HELPERS(fetch_add)
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GEN_ATOMIC_HELPERS(fetch_and)
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GEN_ATOMIC_HELPERS(fetch_or)
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GEN_ATOMIC_HELPERS(fetch_xor)
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GEN_ATOMIC_HELPERS(fetch_smin)
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GEN_ATOMIC_HELPERS(fetch_umin)
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GEN_ATOMIC_HELPERS(fetch_smax)
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GEN_ATOMIC_HELPERS(fetch_umax)
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GEN_ATOMIC_HELPERS(add_fetch)
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GEN_ATOMIC_HELPERS(and_fetch)
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GEN_ATOMIC_HELPERS(or_fetch)
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GEN_ATOMIC_HELPERS(xor_fetch)
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GEN_ATOMIC_HELPERS(smin_fetch)
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GEN_ATOMIC_HELPERS(umin_fetch)
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GEN_ATOMIC_HELPERS(smax_fetch)
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GEN_ATOMIC_HELPERS(umax_fetch)
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GEN_ATOMIC_HELPERS(xchg)
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#undef ATOMIC_HELPER
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#undef GEN_ATOMIC_HELPERS
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