Mercurial > pub > dyncall > dyncall
annotate dyncallback/dyncall_args_arm32_arm.c @ 45:e5cdf4b4d813
- armhf callback fix for calls with >= 64byte of floating point params where d7 is filled before all args are pushed
| author | cslag |
|---|---|
| date | Sat, 19 Dec 2015 23:24:35 +0100 |
| parents | f01895437921 |
| children | c4de113dc1e9 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 | |
| 3 Package: dyncall | |
| 4 Library: dyncallback | |
| 5 File: dyncallback/dyncall_args_arm32_arm.c | |
| 6 Description: Callback's Arguments VM - Implementation for ARM32 (ARM mode) | |
| 7 License: | |
| 8 | |
| 9 Copyright (c) 2007-2015 Daniel Adler <dadler@uni-goettingen.de>, | |
| 10 Tassilo Philipp <tphilipp@potion-studios.com> | |
| 11 | |
| 12 Permission to use, copy, modify, and distribute this software for any | |
| 13 purpose with or without fee is hereby granted, provided that the above | |
| 14 copyright notice and this permission notice appear in all copies. | |
| 15 | |
| 16 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
| 17 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
| 18 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
| 19 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 20 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 21 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
| 22 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 23 | |
| 24 */ | |
| 25 | |
| 26 | |
| 27 | |
| 28 #include "dyncall_args_arm32_arm.h" | |
| 29 | |
| 30 | |
| 31 static void arm_align_64(DCArgs* args) | |
| 32 { | |
| 33 /* Look at signature to see if current calling convention needs alignment */ | |
| 34 /* or not (e.g. EABI has different alignment). If nothing specified, fall */ | |
| 35 /* back to default behaviour for this platform. */ | |
| 36 /* @@@ check signature string */ | |
| 37 | |
| 38 int sig = | |
|
39
f01895437921
- armhf callback support: fixed alignment logic (only return type support still missing)
cslag
parents:
38
diff
changeset
|
39 #if defined(DC__ABI_ARM_EABI) || defined(DC__ABI_ARM_HF) |
| 0 | 40 0; /* EABI */ |
| 41 #else | |
| 42 1; /* ATPCS */ | |
| 43 #endif | |
| 44 if(sig == 0) { | |
| 45 if(args->reg_count < 4) | |
| 46 args->reg_count = (args->reg_count+1)&~1; | |
| 47 if(args->reg_count >= 4 && (int)args->stack_ptr & 4) | |
| 48 ++args->stack_ptr; | |
| 49 } | |
| 50 } | |
| 51 | |
| 52 | |
| 53 static void* arm_word(DCArgs* args) | |
| 54 { | |
| 55 if(args->reg_count < 4) | |
| 56 return &args->reg_data[args->reg_count++]; | |
| 57 else | |
| 58 return (void*)args->stack_ptr++; | |
| 59 } | |
| 60 | |
| 38 | 61 static DCfloat arm_float(DCArgs* args) |
| 62 { | |
| 63 #if defined(DC__ABI_ARM_HF) | |
| 64 DCfloat f; | |
| 65 if(args->freg_count < 16) { | |
| 66 f = args->f[args->freg_count++]; | |
| 67 | |
| 68 /* if freg_count was odd, sync with dreg_count */ | |
| 69 if(!(args->freg_count & 1) && (args->freg_count < args->dreg_count)) | |
| 70 args->freg_count = args->dreg_count; | |
| 71 | |
| 72 return f; | |
| 73 } | |
| 74 #endif | |
| 75 return *(DCfloat*)arm_word(args); | |
| 76 } | |
| 0 | 77 |
| 78 static DCdouble arm_double(DCArgs* args) | |
| 79 { | |
| 80 union { | |
| 81 DCdouble d; | |
| 82 DClong l[2]; | |
| 83 } d; | |
| 38 | 84 #if defined(DC__ABI_ARM_HF) |
| 85 if(args->dreg_count < args->freg_count) | |
| 86 args->dreg_count = (args->freg_count+1)&0x1e; /* clear last bit, counter won't be higher than 16, anyways */ | |
| 87 | |
| 88 if(args->dreg_count < 16) { | |
| 89 d.d = *(DCdouble*)&args->f[args->dreg_count]; | |
| 90 args->dreg_count += 2; | |
| 91 | |
| 92 /* freg_count is either odd (pointing to a gap), or always the same as dreg_count */ | |
| 93 if(!(args->freg_count & 1)) | |
| 94 args->freg_count = args->dreg_count; | |
| 95 return d.d; | |
| 96 } | |
|
45
e5cdf4b4d813
- armhf callback fix for calls with >= 64byte of floating point params where d7 is filled before all args are pushed
cslag
parents:
39
diff
changeset
|
97 args->freg_count = 16; /* float registers all filled up - stop filling gaps for single precision, also */ |
| 38 | 98 #endif |
| 0 | 99 arm_align_64(args); |
| 100 d.l[0] = *(DClong*)arm_word(args); | |
| 101 d.l[1] = *(DClong*)arm_word(args); | |
| 102 return d.d; | |
| 103 } | |
| 104 | |
| 105 static DClonglong arm_longlong(DCArgs* args) | |
| 106 { | |
| 107 union { | |
| 108 DClonglong ll; | |
| 109 DClong l[2]; | |
| 110 } ll; | |
| 111 arm_align_64(args); | |
| 112 ll.l[0] = *(DClong*)arm_word(args); | |
| 113 ll.l[1] = *(DClong*)arm_word(args); | |
| 114 return ll.ll; | |
| 115 } | |
| 116 | |
| 117 | |
| 118 | |
| 119 // ---------------------------------------------------------------------------- | |
| 120 // C API implementation: | |
| 121 | |
| 122 | |
| 123 // base operations: | |
| 124 | |
| 125 DClonglong dcbArgLongLong (DCArgs* p) { return arm_longlong(p); } | |
| 126 DClong dcbArgLong (DCArgs* p) { return *(DClong*)arm_word(p); } | |
| 127 DCint dcbArgInt (DCArgs* p) { return (DCint) dcbArgLong(p); } | |
| 128 DCchar dcbArgChar (DCArgs* p) { return (DCchar) dcbArgLong(p); } | |
| 129 DCshort dcbArgShort (DCArgs* p) { return (DCshort) dcbArgLong(p); } | |
| 130 DCbool dcbArgBool (DCArgs* p) { return (dcbArgLong(p) == 0) ? 0 : 1; } | |
| 131 | |
| 132 DCuint dcbArgUInt (DCArgs* p) { return (DCuint) dcbArgInt(p); } | |
| 133 DCuchar dcbArgUChar (DCArgs* p) { return (DCuchar) dcbArgChar(p); } | |
| 134 DCushort dcbArgUShort (DCArgs* p) { return (DCushort) dcbArgShort(p); } | |
| 135 DCulong dcbArgULong (DCArgs* p) { return (DCulong) dcbArgLong(p); } | |
| 136 DCulonglong dcbArgULongLong(DCArgs* p) { return (DCulonglong)dcbArgLongLong(p); } | |
| 137 | |
| 138 | |
| 139 DCpointer dcbArgPointer (DCArgs* p) { return (DCpointer) dcbArgLong(p); } | |
| 140 | |
| 141 DCdouble dcbArgDouble (DCArgs* p) { return arm_double(p); } | |
| 38 | 142 DCfloat dcbArgFloat (DCArgs* p) { return arm_float(p); } |
| 0 | 143 |