| /* |
| * Copyright (c) 2016, 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. |
| * |
| */ |
| |
| #ifndef CPU_S390_VM_C1_DEFS_S390_HPP |
| #define CPU_S390_VM_C1_DEFS_S390_HPP |
| |
| // 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, |
| |
| pd_nof_xmm_regs_linearscan = 0, |
| pd_nof_caller_save_xmm_regs = 0, |
| pd_first_xmm_reg = -1, |
| pd_last_xmm_reg = -1 |
| }; |
| |
| // For debug info: a float value in a register is saved in single precision by runtime stubs. |
| enum { |
| pd_float_saved_as_double = false |
| }; |
| |
| #endif // CPU_S390_VM_C1_DEFS_S390_HPP |