/* * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2016 SAP SE. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code 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 General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. *
*/
// Native word offsets from memory address (big endian). enum {
pd_lo_word_offset_in_bytes = BytesPerInt,
pd_hi_word_offset_in_bytes = 0
};
// Explicit rounding operations are not required to implement the strictFP mode. enum {
pd_strict_fp_requires_explicit_rounding = false
};
// registers enum {
pd_nof_cpu_regs_frame_map = 16, // Number of registers used during code emission. // Treat all registers as caller save (values of callee save are hard to find if caller is in runtime). // unallocated: Z_thread, Z_fp, Z_SP, Z_R0_scratch, Z_R1_scratch, Z_R14
pd_nof_cpu_regs_unallocated = 6,
pd_nof_caller_save_cpu_regs_frame_map = pd_nof_cpu_regs_frame_map - pd_nof_cpu_regs_unallocated, // Number of cpu registers killed by calls.
pd_nof_cpu_regs_reg_alloc = pd_nof_caller_save_cpu_regs_frame_map, // Number of registers that are visible to register allocator.
pd_nof_cpu_regs_linearscan = pd_nof_cpu_regs_frame_map,// Number of registers visible linear scan.
pd_first_cpu_reg = 0,
pd_last_cpu_reg = 9, // Others are unallocated (see FrameMap::initialize()).
pd_nof_fpu_regs_frame_map = 16, // Number of registers used during code emission.
pd_nof_fcpu_regs_unallocated = 1, // Leave Z_F15 unallocated and use it as scratch register.
pd_nof_caller_save_fpu_regs_frame_map = pd_nof_fpu_regs_frame_map - pd_nof_fcpu_regs_unallocated, // Number of fpu registers killed by calls.
pd_nof_fpu_regs_reg_alloc = pd_nof_caller_save_fpu_regs_frame_map, // Number of registers that are visible to register allocator.
pd_nof_fpu_regs_linearscan = pd_nof_fpu_regs_frame_map, // Number of registers visible to linear scan.
pd_first_fpu_reg = pd_nof_cpu_regs_frame_map,
pd_last_fpu_reg = pd_first_fpu_reg + pd_nof_fpu_regs_frame_map - pd_nof_fcpu_regs_unallocated - 1,
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