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40 #ifndef __njconfig_h__
41 #define __njconfig_h__
45 // Do not include nanojit.h here; this file should be usable without it.
47 #ifdef FEATURE_NANOJIT
52 * A struct used to configure the assumptions that Assembler can make when
53 * generating code. The ctor will fill in all fields with the most reasonable
54 * values it can derive from compiler flags and/or runtime detection, but
55 * the embedder is free to override any or all of them as it sees fit.
56 * Using the ctor-provided default setup is guaranteed to provide a safe
57 * runtime environment (though perhaps suboptimal in some cases), so an embedder
58 * should replace these values with great care.
60 * Note that although many fields are used on only specific architecture(s),
61 * this struct is deliberately declared without ifdef's for them, so (say) ARM-specific
62 * fields are declared everywhere. This reduces build dependencies (so that this
63 * files does not require nanojit.h to be included beforehand) and also reduces
64 * clutter in this file; the extra storage space required is trivial since most
65 * fields are single bits.
70 // fills in reasonable default values for all fields.
73 // ARM architecture to assume when generate instructions for (currently, 4 <= arm_arch <= 7)
79 // Can we use SSE2 instructions? (x86-only)
82 // Can we use cmov instructions? (x86-only)
83 uint32_t i386_use_cmov
:1;
85 // Should we use a virtual stack pointer? (x86-only)
86 uint32_t i386_fixed_esp
:1;
88 // Whether or not to generate VFP instructions. (ARM only)
92 uint32_t arm_show_stats
:1;
94 // If true, use softfloat for all floating point operations,
95 // whether or not an FPU is present. (ARM only for now, but might also includes MIPS in the future)
96 uint32_t soft_float
:1;
100 #endif // FEATURE_NANOJIT
101 #endif // __njconfig_h__