xref: /plan9/sys/src/cmd/gs/386.h (revision 593dc095aefb2a85c828727bbfa9da139a49bdf4)
1*593dc095SDavid du Colombier /* Parameters derived from machine and compiler architecture. */
2*593dc095SDavid du Colombier /* This file is generated mechanically by genarch.c. */
3219b2ee8SDavid du Colombier 
4219b2ee8SDavid du Colombier 	 /* ---------------- Scalar alignments ---------------- */
5219b2ee8SDavid du Colombier 
67dd7cddfSDavid du Colombier #define ARCH_ALIGN_SHORT_MOD 2
77dd7cddfSDavid du Colombier #define ARCH_ALIGN_INT_MOD 4
87dd7cddfSDavid du Colombier #define ARCH_ALIGN_LONG_MOD 4
97dd7cddfSDavid du Colombier #define ARCH_ALIGN_PTR_MOD 4
107dd7cddfSDavid du Colombier #define ARCH_ALIGN_FLOAT_MOD 4
117dd7cddfSDavid du Colombier #define ARCH_ALIGN_DOUBLE_MOD 4
12*593dc095SDavid du Colombier #define ARCH_ALIGN_STRUCT_MOD 4
13219b2ee8SDavid du Colombier 
14219b2ee8SDavid du Colombier 	 /* ---------------- Scalar sizes ---------------- */
15219b2ee8SDavid du Colombier 
16*593dc095SDavid du Colombier #define ARCH_LOG2_SIZEOF_CHAR 0
177dd7cddfSDavid du Colombier #define ARCH_LOG2_SIZEOF_SHORT 1
187dd7cddfSDavid du Colombier #define ARCH_LOG2_SIZEOF_INT 2
197dd7cddfSDavid du Colombier #define ARCH_LOG2_SIZEOF_LONG 2
20*593dc095SDavid du Colombier #define ARCH_LOG2_SIZEOF_LONG_LONG 3
217dd7cddfSDavid du Colombier #define ARCH_SIZEOF_PTR 4
227dd7cddfSDavid du Colombier #define ARCH_SIZEOF_FLOAT 4
237dd7cddfSDavid du Colombier #define ARCH_SIZEOF_DOUBLE 8
247dd7cddfSDavid du Colombier #define ARCH_FLOAT_MANTISSA_BITS 24
257dd7cddfSDavid du Colombier #define ARCH_DOUBLE_MANTISSA_BITS 53
26219b2ee8SDavid du Colombier 
27219b2ee8SDavid du Colombier 	 /* ---------------- Unsigned max values ---------------- */
28219b2ee8SDavid du Colombier 
297dd7cddfSDavid du Colombier #define ARCH_MAX_UCHAR ((unsigned char)0xff + (unsigned char)0)
307dd7cddfSDavid du Colombier #define ARCH_MAX_USHORT ((unsigned short)0xffff + (unsigned short)0)
317dd7cddfSDavid du Colombier #define ARCH_MAX_UINT ((unsigned int)~0 + (unsigned int)0)
327dd7cddfSDavid du Colombier #define ARCH_MAX_ULONG ((unsigned long)~0L + (unsigned long)0)
337dd7cddfSDavid du Colombier 
347dd7cddfSDavid du Colombier 	 /* ---------------- Cache sizes ---------------- */
357dd7cddfSDavid du Colombier 
36*593dc095SDavid du Colombier #define ARCH_CACHE1_SIZE 131072
37*593dc095SDavid du Colombier #define ARCH_CACHE2_SIZE 4194304
38219b2ee8SDavid du Colombier 
39219b2ee8SDavid du Colombier 	 /* ---------------- Miscellaneous ---------------- */
40219b2ee8SDavid du Colombier 
417dd7cddfSDavid du Colombier #define ARCH_IS_BIG_ENDIAN 0
427dd7cddfSDavid du Colombier #define ARCH_PTRS_ARE_SIGNED 0
437dd7cddfSDavid du Colombier #define ARCH_FLOATS_ARE_IEEE 1
447dd7cddfSDavid du Colombier #define ARCH_ARITH_RSHIFT 2
457dd7cddfSDavid du Colombier #define ARCH_CAN_SHIFT_FULL_LONG 0
467dd7cddfSDavid du Colombier #define ARCH_DIV_NEG_POS_TRUNCATES 1
47