1 /*
2 * Copyright (c) 2019, Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included
12 * in all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 */
22 // CM Fast Composite Linking library.
23 //
24
25 #include <cstring>
26
27 #include "cm_fc_ld.h"
28
29 #include "PatchInfoLinker.h"
30 #include "PatchInfoReader.h"
31 #include "PatchInfoRecord.h"
32
33
cm_fc_get_callee_info(const char * buf,size_t size,void * c,cm_fc_link_type * out_link_type)34 int cm_fc_get_callee_info(const char *buf, size_t size,
35 void *c,
36 cm_fc_link_type *out_link_type) {
37 // Read patch info.
38 if (readPatchInfo(buf, size, *((cm::patch::Collection *)c)))
39 return CM_FC_FAILURE;
40
41 cm::patch::Collection *C = reinterpret_cast<cm::patch::Collection *>(c);
42
43 // Bail out if there's no symbol.
44 if (C->sym_begin() == C->sym_end())
45 return CM_FC_FAILURE;
46 // Bail out if there's no binary.
47 if (C->bin_begin() == C->bin_end())
48 return CM_FC_FAILURE;
49
50 cm::patch::Binary &Bin = *(C->bin_begin());
51
52 cm::patch::Symbol *S = nullptr;
53 for (auto I = C->sym_begin(), E = C->sym_end(); I != E; ++I)
54 if (I->getBinary() == &Bin) {
55 S = &*I;
56 }
57 if (!S)
58 return CM_FC_FAILURE;
59
60 unsigned LT = S->getExtra() & 0x3;
61 if (LT >= 3)
62 return CM_FC_FAILURE;
63 *out_link_type = cm_fc_link_type(LT);
64
65 if (Bin.rel_begin() == Bin.rel_end()) {
66 // If there is no relocation, there's no callee info to return.
67 return CM_FC_FAILURE;
68 }
69
70 return CM_FC_OK;
71 }
72
cm_fc_combine_kernels(size_t num_kernels,cm_fc_kernel_t kernels[],char * out_buf,size_t * out_size,const char * options)73 int cm_fc_combine_kernels(size_t num_kernels, cm_fc_kernel_t kernels[],
74 char *out_buf, size_t *out_size,
75 const char *options) {
76 if (!out_buf || !out_size)
77 return CM_FC_FAILURE;
78
79 cm::patch::Collection C;
80 if (linkPatchInfo(C, num_kernels, kernels, options))
81 return CM_FC_FAILURE;
82
83 const std::string &B = C.getLinkedBinary();
84 if (B.size() > *out_size) {
85 *out_size = B.size();
86 return CM_FC_NOBUFS;
87 }
88
89 std::memcpy(out_buf, B.data(), B.size());
90 *out_size = B.size();
91
92 return CM_FC_OK;
93 }
94