JDK14/Java14源码在线阅读

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 *
 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#ifndef CPU_SPARC_C1_DEFS_SPARC_HPP
#define CPU_SPARC_C1_DEFS_SPARC_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 = 32,  // number of registers used during code emission
  pd_nof_caller_save_cpu_regs_frame_map = 10,  // number of cpu registers killed by calls
  pd_nof_cpu_regs_reg_alloc = 20,  // number of registers that are visible to register allocator
  pd_nof_cpu_regs_linearscan = 32,// number of registers visible linear scan
  pd_first_cpu_reg = 0,
  pd_last_cpu_reg = 31,
  pd_last_allocatable_cpu_reg = 19,
  pd_first_callee_saved_reg = 0,
  pd_last_callee_saved_reg = 13,

  pd_nof_fpu_regs_frame_map = 32,  // number of registers used during code emission
  pd_nof_caller_save_fpu_regs_frame_map = 32,  // number of fpu registers killed by calls
  pd_nof_fpu_regs_reg_alloc = 32,  // number of registers that are visible to register allocator
  pd_nof_fpu_regs_linearscan = 32, // number of registers visible to linear scan
  pd_first_fpu_reg = pd_nof_cpu_regs_frame_map,
  pd_last_fpu_reg =  pd_nof_cpu_regs_frame_map + pd_nof_fpu_regs_frame_map - 1,


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