Mon, 11 Oct 2010 04:18:58 -0700
6829194: JSR 292 needs to support compressed oops
Reviewed-by: kvn, jrose
1 /*
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25 // native word offsets from memory address (big endian)
26 enum {
27 pd_lo_word_offset_in_bytes = BytesPerInt,
28 pd_hi_word_offset_in_bytes = 0
29 };
32 // explicit rounding operations are not required to implement the strictFP mode
33 enum {
34 pd_strict_fp_requires_explicit_rounding = false
35 };
38 // registers
39 enum {
40 pd_nof_cpu_regs_frame_map = 32, // number of registers used during code emission
41 pd_nof_caller_save_cpu_regs_frame_map = 10, // number of cpu registers killed by calls
42 pd_nof_cpu_regs_reg_alloc = 20, // number of registers that are visible to register allocator
43 pd_nof_cpu_regs_linearscan = 32,// number of registers visible linear scan
44 pd_first_cpu_reg = 0,
45 pd_last_cpu_reg = 31,
46 pd_last_allocatable_cpu_reg = 19,
47 pd_first_callee_saved_reg = 0,
48 pd_last_callee_saved_reg = 13,
50 pd_nof_fpu_regs_frame_map = 32, // number of registers used during code emission
51 pd_nof_caller_save_fpu_regs_frame_map = 32, // number of fpu registers killed by calls
52 pd_nof_fpu_regs_reg_alloc = 32, // number of registers that are visible to register allocator
53 pd_nof_fpu_regs_linearscan = 32, // number of registers visible to linear scan
54 pd_first_fpu_reg = pd_nof_cpu_regs_frame_map,
55 pd_last_fpu_reg = pd_nof_cpu_regs_frame_map + pd_nof_fpu_regs_frame_map - 1,
57 pd_nof_xmm_regs_linearscan = 0,
58 pd_nof_caller_save_xmm_regs = 0,
59 pd_first_xmm_reg = -1,
60 pd_last_xmm_reg = -1
61 };
64 // for debug info: a float value in a register is saved in single precision by runtime stubs
65 enum {
66 pd_float_saved_as_double = false
67 };