author | roland |
Wed, 02 Oct 2019 17:32:08 +0200 | |
changeset 58471 | bada0782842a |
parent 53244 | 9807daeb47c4 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. |
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* Copyright (c) 2016 SAP SE. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#ifndef CPU_S390_C1_DEFS_S390_HPP |
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#define CPU_S390_C1_DEFS_S390_HPP |
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// Native word offsets from memory address (big endian). |
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enum { |
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pd_lo_word_offset_in_bytes = BytesPerInt, |
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pd_hi_word_offset_in_bytes = 0 |
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}; |
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||
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// Explicit rounding operations are not required to implement the strictFP mode. |
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enum { |
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pd_strict_fp_requires_explicit_rounding = false |
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}; |
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// registers |
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enum { |
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pd_nof_cpu_regs_frame_map = 16, // Number of registers used during code emission. |
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// Treat all registers as caller save (values of callee save are hard to find if caller is in runtime). |
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// unallocated: Z_thread, Z_fp, Z_SP, Z_R0_scratch, Z_R1_scratch, Z_R14 |
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pd_nof_cpu_regs_unallocated = 6, |
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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. |
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pd_nof_cpu_regs_reg_alloc = pd_nof_caller_save_cpu_regs_frame_map, // Number of registers that are visible to register allocator. |
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pd_nof_cpu_regs_linearscan = pd_nof_cpu_regs_frame_map,// Number of registers visible linear scan. |
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pd_first_cpu_reg = 0, |
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pd_last_cpu_reg = 9, // Others are unallocated (see FrameMap::initialize()). |
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pd_nof_fpu_regs_frame_map = 16, // Number of registers used during code emission. |
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pd_nof_fcpu_regs_unallocated = 1, // Leave Z_F15 unallocated and use it as scratch register. |
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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. |
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pd_nof_fpu_regs_reg_alloc = pd_nof_caller_save_fpu_regs_frame_map, // Number of registers that are visible to register allocator. |
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pd_nof_fpu_regs_linearscan = pd_nof_fpu_regs_frame_map, // Number of registers visible to linear scan. |
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pd_first_fpu_reg = pd_nof_cpu_regs_frame_map, |
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pd_last_fpu_reg = pd_first_fpu_reg + pd_nof_fpu_regs_frame_map - pd_nof_fcpu_regs_unallocated - 1, |
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pd_nof_xmm_regs_linearscan = 0, |
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pd_nof_caller_save_xmm_regs = 0, |
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pd_first_xmm_reg = -1, |
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pd_last_xmm_reg = -1 |
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}; |
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// For debug info: a float value in a register is saved in single precision by runtime stubs. |
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enum { |
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pd_float_saved_as_double = false |
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}; |
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#endif // CPU_S390_C1_DEFS_S390_HPP |