diff options
Diffstat (limited to 'target/ppc/mem_helper.c')
| -rw-r--r-- | target/ppc/mem_helper.c | 45 |
1 files changed, 32 insertions, 13 deletions
diff --git a/target/ppc/mem_helper.c b/target/ppc/mem_helper.c index 508d472a2f..e7d3a79d96 100644 --- a/target/ppc/mem_helper.c +++ b/target/ppc/mem_helper.c @@ -84,26 +84,45 @@ static void *probe_contiguous(CPUPPCState *env, target_ulong addr, uint32_t nb, void helper_lmw(CPUPPCState *env, target_ulong addr, uint32_t reg) { - for (; reg < 32; reg++) { - if (needs_byteswap(env)) { - env->gpr[reg] = bswap32(cpu_ldl_data_ra(env, addr, GETPC())); - } else { - env->gpr[reg] = cpu_ldl_data_ra(env, addr, GETPC()); + uintptr_t raddr = GETPC(); + int mmu_idx = cpu_mmu_index(env, false); + void *host = probe_contiguous(env, addr, (32 - reg) * 4, + MMU_DATA_LOAD, mmu_idx, raddr); + + if (likely(host)) { + /* Fast path -- the entire operation is in RAM at host. */ + for (; reg < 32; reg++) { + env->gpr[reg] = (uint32_t)ldl_be_p(host); + host += 4; + } + } else { + /* Slow path -- at least some of the operation requires i/o. */ + for (; reg < 32; reg++) { + env->gpr[reg] = cpu_ldl_mmuidx_ra(env, addr, mmu_idx, raddr); + addr = addr_add(env, addr, 4); } - addr = addr_add(env, addr, 4); } } void helper_stmw(CPUPPCState *env, target_ulong addr, uint32_t reg) { - for (; reg < 32; reg++) { - if (needs_byteswap(env)) { - cpu_stl_data_ra(env, addr, bswap32((uint32_t)env->gpr[reg]), - GETPC()); - } else { - cpu_stl_data_ra(env, addr, (uint32_t)env->gpr[reg], GETPC()); + uintptr_t raddr = GETPC(); + int mmu_idx = cpu_mmu_index(env, false); + void *host = probe_contiguous(env, addr, (32 - reg) * 4, + MMU_DATA_STORE, mmu_idx, raddr); + + if (likely(host)) { + /* Fast path -- the entire operation is in RAM at host. */ + for (; reg < 32; reg++) { + stl_be_p(host, env->gpr[reg]); + host += 4; + } + } else { + /* Slow path -- at least some of the operation requires i/o. */ + for (; reg < 32; reg++) { + cpu_stl_mmuidx_ra(env, addr, env->gpr[reg], mmu_idx, raddr); + addr = addr_add(env, addr, 4); } - addr = addr_add(env, addr, 4); } } |