The Tor Browser / file comparison
comparison: xpcom/reflect/xptcall/src/md/unix/xptcinvoke_pa32.cpp
xpcom/reflect/xptcall/src/md/unix/xptcinvoke_pa32.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:defc2efe0ed8 |
|---|---|
| 1 | |
| 2 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 3 * | |
| 4 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 5 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 6 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 7 | |
| 8 #include "xptcprivate.h" | |
| 9 | |
| 10 #if _HPUX | |
| 11 #error "This code is for HP-PA RISC 32 bit mode only" | |
| 12 #endif | |
| 13 | |
| 14 #include <alloca.h> | |
| 15 | |
| 16 typedef unsigned nsXPCVariant; | |
| 17 | |
| 18 extern "C" int32_t | |
| 19 invoke_count_bytes(nsISupports* that, const uint32_t methodIndex, | |
| 20 const uint32_t paramCount, const nsXPTCVariant* s) | |
| 21 { | |
| 22 int32_t result = 4; /* variant records do not include self pointer */ | |
| 23 | |
| 24 /* counts the number of bytes required by the argument stack, | |
| 25 64 bit integer, and double requires 8 bytes. All else requires | |
| 26 4 bytes. | |
| 27 */ | |
| 28 | |
| 29 { | |
| 30 uint32_t indx; | |
| 31 for (indx = paramCount; indx > 0; --indx, ++s) | |
| 32 { | |
| 33 if (! s->IsPtrData()) | |
| 34 { | |
| 35 if (s->type == nsXPTType::T_I64 || s->type == nsXPTType::T_U64 || | |
| 36 s->type == nsXPTType::T_DOUBLE) | |
| 37 { | |
| 38 /* 64 bit integer and double aligned on 8 byte boundaries */ | |
| 39 result += (result & 4) + 8; | |
| 40 continue; | |
| 41 } | |
| 42 } | |
| 43 result += 4; /* all other cases use 4 bytes */ | |
| 44 } | |
| 45 } | |
| 46 result -= 72; /* existing stack buffer is 72 bytes */ | |
| 47 if (result < 0) | |
| 48 return 0; | |
| 49 { | |
| 50 /* round up to 64 bytes boundary */ | |
| 51 int32_t remainder = result & 63; | |
| 52 return (remainder == 0) ? result : (result + 64 - remainder); | |
| 53 } | |
| 54 } | |
| 55 | |
| 56 extern "C" uint32_t | |
| 57 invoke_copy_to_stack(uint32_t* d, | |
| 58 const uint32_t paramCount, nsXPTCVariant* s) | |
| 59 { | |
| 60 | |
| 61 typedef struct | |
| 62 { | |
| 63 uint32_t hi; | |
| 64 uint32_t lo; | |
| 65 } DU; | |
| 66 | |
| 67 uint32_t* dest = d; | |
| 68 nsXPTCVariant* source = s; | |
| 69 /* we clobber param vars by copying stuff on stack, have to use local var */ | |
| 70 | |
| 71 uint32_t floatflags = 0; | |
| 72 /* flag indicating which floating point registers to load */ | |
| 73 | |
| 74 uint32_t regwords = 1; /* register 26 is reserved for ptr to 'that' */ | |
| 75 uint32_t indx; | |
| 76 | |
| 77 for (indx = paramCount; indx > 0; --indx, --dest, ++source) | |
| 78 { | |
| 79 if (source->IsPtrData()) | |
| 80 { | |
| 81 *((void**) dest) = source->ptr; | |
| 82 ++regwords; | |
| 83 continue; | |
| 84 } | |
| 85 switch (source->type) | |
| 86 { | |
| 87 case nsXPTType::T_I8 : *((int32_t*) dest) = source->val.i8; break; | |
| 88 case nsXPTType::T_I16 : *((int32_t*) dest) = source->val.i16; break; | |
| 89 case nsXPTType::T_I32 : *((int32_t*) dest) = source->val.i32; break; | |
| 90 case nsXPTType::T_I64 : | |
| 91 case nsXPTType::T_U64 : | |
| 92 if (regwords & 1) | |
| 93 { | |
| 94 /* align on double word boundary */ | |
| 95 --dest; | |
| 96 ++regwords; | |
| 97 } | |
| 98 *((uint32_t*) dest) = ((DU *) source)->lo; | |
| 99 *((uint32_t*) --dest) = ((DU *) source)->hi; | |
| 100 /* big endian - hi word in low addr */ | |
| 101 regwords += 2; | |
| 102 continue; | |
| 103 case nsXPTType::T_DOUBLE : | |
| 104 if (regwords & 1) | |
| 105 { | |
| 106 /* align on double word boundary */ | |
| 107 --dest; | |
| 108 ++regwords; | |
| 109 } | |
| 110 switch (regwords) /* load double precision float register */ | |
| 111 { | |
| 112 case 2: | |
| 113 floatflags |= 1; | |
| 114 } | |
| 115 *((uint32_t*) dest) = ((DU *) source)->lo; | |
| 116 *((uint32_t*) --dest) = ((DU *) source)->hi; | |
| 117 /* big endian - hi word in low addr */ | |
| 118 regwords += 2; | |
| 119 continue; | |
| 120 case nsXPTType::T_FLOAT : | |
| 121 switch (regwords) /* load single precision float register */ | |
| 122 { | |
| 123 case 1: | |
| 124 floatflags |= 2; | |
| 125 break; | |
| 126 case 2: | |
| 127 floatflags |= 4; | |
| 128 break; | |
| 129 case 3: | |
| 130 floatflags |= 8; | |
| 131 } | |
| 132 *((float*) dest) = source->val.f; | |
| 133 break; | |
| 134 case nsXPTType::T_U8 : *((uint32_t*) (dest)) = source->val.u8; break; | |
| 135 case nsXPTType::T_U16 : *((uint32_t*) (dest)) = source->val.u16; break; | |
| 136 case nsXPTType::T_U32 : *((uint32_t*) (dest)) = source->val.u32; break; | |
| 137 case nsXPTType::T_BOOL : *((uint32_t*) (dest)) = source->val.b; break; | |
| 138 case nsXPTType::T_CHAR : *((uint32_t*) (dest)) = source->val.c; break; | |
| 139 case nsXPTType::T_WCHAR : *((int32_t*) (dest)) = source->val.wc; break; | |
| 140 | |
| 141 default: | |
| 142 // all the others are plain pointer types | |
| 143 *((void**) dest) = source->val.p; | |
| 144 } | |
| 145 ++regwords; | |
| 146 } | |
| 147 return floatflags; | |
| 148 } | |
| 149 |
