| 1 | /* -----------------------------------------------------------------------
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| 2 | ia64_flags.h - Copyright (c) 2000 Hewlett Packard Company
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| 3 |
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| 4 | IA64/unix Foreign Function Interface
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| 5 |
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| 6 | Original author: Hans Boehm, HP Labs
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| 7 |
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| 8 | Permission is hereby granted, free of charge, to any person obtaining
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| 9 | a copy of this software and associated documentation files (the
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| 10 | ``Software''), to deal in the Software without restriction, including
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| 11 | without limitation the rights to use, copy, modify, merge, publish,
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| 12 | distribute, sublicense, and/or sell copies of the Software, and to
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| 13 | permit persons to whom the Software is furnished to do so, subject to
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| 14 | the following conditions:
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| 15 |
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| 16 | The above copyright notice and this permission notice shall be included
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| 17 | in all copies or substantial portions of the Software.
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| 18 |
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| 19 | THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
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| 20 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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| 21 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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| 22 | IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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| 23 | OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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| 24 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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| 25 | OTHER DEALINGS IN THE SOFTWARE.
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| 26 | ----------------------------------------------------------------------- */
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| 27 |
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| 28 |
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| 29 | /* Homogeneous Floating Point Aggregates (HFAs) which are returned */
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| 30 | /* in FP registers. The least significant bits specify the size in */
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| 31 | /* words. */
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| 32 | #define FFI_IS_FLOAT_FP_AGGREGATE 0x1000
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| 33 | #define FFI_IS_DOUBLE_FP_AGGREGATE 0x0800
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| 34 | #define FLOAT_FP_AGGREGATE_BIT 12
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| 35 | #define DOUBLE_FP_AGGREGATE_BIT 11
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| 36 |
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| 37 | /* Small structures containing N words. If N=1, they are returned */
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| 38 | /* as though they were integers. */
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| 39 | #define FFI_IS_SMALL_STRUCT2 0x40 /* Struct > 8, <=16 bytes */
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| 40 | #define FFI_IS_SMALL_STRUCT3 0x41 /* Struct > 16 <= 24 bytes */
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| 41 | #define FFI_IS_SMALL_STRUCT4 0x42 /* Struct > 24, <=32 bytes */
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| 42 |
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| 43 | /* Flag values identifying particularly simple cases, which are */
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| 44 | /* handled specially. We treat functions as simple if they take all */
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| 45 | /* arguments can be passed as 32 or 64 bit integer quantities, there is */
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| 46 | /* either no return value or it can be treated as a 64bit integer, and */
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| 47 | /* if there are at most 2 arguments. */
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| 48 | /* This is OR'ed with the normal flag values. */
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| 49 | #define FFI_SIMPLE_V 0x10000 /* () -> X */
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| 50 | #define FFI_SIMPLE_I 0x20000 /* (int) -> X */
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| 51 | #define FFI_SIMPLE_L 0x30000 /* (long) -> X */
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| 52 | #define FFI_SIMPLE_II 0x40000 /* (int,int) -> X */
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| 53 | #define FFI_SIMPLE_IL 0x50000 /* (int,long) -> X */
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| 54 | #define FFI_SIMPLE_LI 0x60000 /* (long,int) -> X */
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| 55 | #define FFI_SIMPLE_LL 0x70000 /* (long,long) -> X */
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| 56 |
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| 57 | /* Mask for all of the FFI_SIMPLE bits: */
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| 58 | #define FFI_SIMPLE 0xf0000
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| 59 |
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| 60 | /* An easy way to build FFI_SIMPLE flags from FFI_SIMPLE_V: */
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| 61 | #define FFI_ADD_LONG_ARG(flag) (((flag) << 1) | 0x10000)
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| 62 | #define FFI_ADD_INT_ARG(flag) ((flag) << 1)
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