| Colin Cross | 8673b5b | 2018-03-01 11:20:25 -0800 | [diff] [blame] | 1 | // Copyright 2018 Google Inc. All rights reserved. | 
|  | 2 | // | 
|  | 3 | // Licensed under the Apache License, Version 2.0 (the "License"); | 
|  | 4 | // you may not use this file except in compliance with the License. | 
|  | 5 | // You may obtain a copy of the License at | 
|  | 6 | // | 
|  | 7 | //     http://www.apache.org/licenses/LICENSE-2.0 | 
|  | 8 | // | 
|  | 9 | // Unless required by applicable law or agreed to in writing, software | 
|  | 10 | // distributed under the License is distributed on an "AS IS" BASIS, | 
|  | 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | 
|  | 12 | // See the License for the specific language governing permissions and | 
|  | 13 | // limitations under the License. | 
|  | 14 |  | 
| Dan Willemsen | 2249dc8 | 2018-10-15 00:35:59 -0700 | [diff] [blame] | 15 | package symbol_inject | 
| Colin Cross | 8673b5b | 2018-03-01 11:20:25 -0800 | [diff] [blame] | 16 |  | 
|  | 17 | import ( | 
|  | 18 | "debug/macho" | 
|  | 19 | ) | 
|  | 20 |  | 
|  | 21 | /* Generated from: clang -o a.out test.c | 
|  | 22 |  | 
|  | 23 | #include <unistd.h> | 
|  | 24 |  | 
|  | 25 | char soong_build_number[128] = "PLACEHOLDER"; | 
|  | 26 |  | 
|  | 27 | int main() { | 
|  | 28 | write(STDOUT_FILENO, soong_build_number, sizeof(soong_build_number)); | 
|  | 29 | } | 
|  | 30 | */ | 
|  | 31 |  | 
|  | 32 | var machoSymbolTable1 = &macho.File{ | 
|  | 33 | Sections: []*macho.Section{ | 
|  | 34 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__text", Seg: "__TEXT", Addr: 0x100000f50, Size: 0x2e, Offset: 0xf50, Align: 0x4, Reloff: 0x0, Nreloc: 0x0, Flags: 0x80000400}}, | 
|  | 35 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__stubs", Seg: "__TEXT", Addr: 0x100000f7e, Size: 0x6, Offset: 0xf7e, Align: 0x1, Reloff: 0x0, Nreloc: 0x0, Flags: 0x80000408}}, | 
|  | 36 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__stub_helper", Seg: "__TEXT", Addr: 0x100000f84, Size: 0x1a, Offset: 0xf84, Align: 0x2, Reloff: 0x0, Nreloc: 0x0, Flags: 0x80000400}}, | 
|  | 37 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__unwind_info", Seg: "__TEXT", Addr: 0x100000fa0, Size: 0x48, Offset: 0xfa0, Align: 0x2, Reloff: 0x0, Nreloc: 0x0, Flags: 0x0}}, | 
|  | 38 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__eh_frame", Seg: "__TEXT", Addr: 0x100000fe8, Size: 0x18, Offset: 0xfe8, Align: 0x3, Reloff: 0x0, Nreloc: 0x0, Flags: 0x0}}, | 
|  | 39 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__nl_symbol_ptr", Seg: "__DATA", Addr: 0x100001000, Size: 0x10, Offset: 0x1000, Align: 0x3, Reloff: 0x0, Nreloc: 0x0, Flags: 0x6}}, | 
|  | 40 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__la_symbol_ptr", Seg: "__DATA", Addr: 0x100001010, Size: 0x8, Offset: 0x1010, Align: 0x3, Reloff: 0x0, Nreloc: 0x0, Flags: 0x7}}, | 
|  | 41 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__data", Seg: "__DATA", Addr: 0x100001020, Size: 0x80, Offset: 0x1020, Align: 0x4, Reloff: 0x0, Nreloc: 0x0, Flags: 0x0}}, | 
|  | 42 | }, | 
|  | 43 | Symtab: &macho.Symtab{ | 
|  | 44 | Syms: []macho.Symbol{ | 
|  | 45 | macho.Symbol{Name: "__mh_execute_header", Type: 0xf, Sect: 0x1, Desc: 0x10, Value: 0x100000000}, | 
|  | 46 | macho.Symbol{Name: "_main", Type: 0xf, Sect: 0x1, Desc: 0x0, Value: 0x100000f50}, | 
|  | 47 | macho.Symbol{Name: "_soong_build_number", Type: 0xf, Sect: 0x8, Desc: 0x0, Value: 0x100001020}, | 
|  | 48 | macho.Symbol{Name: "_write", Type: 0x1, Sect: 0x0, Desc: 0x100, Value: 0x0}, | 
|  | 49 | macho.Symbol{Name: "dyld_stub_binder", Type: 0x1, Sect: 0x0, Desc: 0x100, Value: 0x0}, | 
|  | 50 | }, | 
|  | 51 | }, | 
|  | 52 | } | 
|  | 53 |  | 
|  | 54 | /* Generated from: clang -o a.out test2.c | 
|  | 55 |  | 
|  | 56 | #include <unistd.h> | 
|  | 57 |  | 
|  | 58 | char symbol1[128] = "PLACEHOLDER1"; | 
|  | 59 | char symbol2[128] = "PLACEHOLDER2"; | 
|  | 60 |  | 
|  | 61 | int main() { | 
|  | 62 | write(STDOUT_FILENO, symbol1, sizeof(symbol1)); | 
|  | 63 | write(STDOUT_FILENO, symbol2, sizeof(symbol2)); | 
|  | 64 | } | 
|  | 65 | */ | 
|  | 66 |  | 
|  | 67 | var machoSymbolTable2 = &macho.File{ | 
|  | 68 | Sections: []*macho.Section{ | 
|  | 69 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__text", Seg: "__TEXT", Addr: 0x100000f30, Size: 0x4a, Offset: 0xf30, Align: 0x4, Reloff: 0x0, Nreloc: 0x0, Flags: 0x80000400}}, | 
|  | 70 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__stubs", Seg: "__TEXT", Addr: 0x100000f7a, Size: 0x6, Offset: 0xf7a, Align: 0x1, Reloff: 0x0, Nreloc: 0x0, Flags: 0x80000408}}, | 
|  | 71 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__stub_helper", Seg: "__TEXT", Addr: 0x100000f80, Size: 0x1a, Offset: 0xf80, Align: 0x2, Reloff: 0x0, Nreloc: 0x0, Flags: 0x80000400}}, | 
|  | 72 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__unwind_info", Seg: "__TEXT", Addr: 0x100000f9c, Size: 0x48, Offset: 0xf9c, Align: 0x2, Reloff: 0x0, Nreloc: 0x0, Flags: 0x0}}, | 
|  | 73 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__eh_frame", Seg: "__TEXT", Addr: 0x100000fe8, Size: 0x18, Offset: 0xfe8, Align: 0x3, Reloff: 0x0, Nreloc: 0x0, Flags: 0x0}}, | 
|  | 74 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__nl_symbol_ptr", Seg: "__DATA", Addr: 0x100001000, Size: 0x10, Offset: 0x1000, Align: 0x3, Reloff: 0x0, Nreloc: 0x0, Flags: 0x6}}, | 
|  | 75 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__la_symbol_ptr", Seg: "__DATA", Addr: 0x100001010, Size: 0x8, Offset: 0x1010, Align: 0x3, Reloff: 0x0, Nreloc: 0x0, Flags: 0x7}}, | 
|  | 76 | &macho.Section{SectionHeader: macho.SectionHeader{Name: "__data", Seg: "__DATA", Addr: 0x100001020, Size: 0x100, Offset: 0x1020, Align: 0x4, Reloff: 0x0, Nreloc: 0x0, Flags: 0x0}}, | 
|  | 77 | }, | 
|  | 78 | Symtab: &macho.Symtab{ | 
|  | 79 | Syms: []macho.Symbol{ | 
|  | 80 | macho.Symbol{Name: "__mh_execute_header", Type: 0xf, Sect: 0x1, Desc: 0x10, Value: 0x100000000}, | 
|  | 81 | macho.Symbol{Name: "_main", Type: 0xf, Sect: 0x1, Desc: 0x0, Value: 0x100000f30}, | 
|  | 82 | macho.Symbol{Name: "_symbol1", Type: 0xf, Sect: 0x8, Desc: 0x0, Value: 0x100001020}, | 
|  | 83 | macho.Symbol{Name: "_symbol2", Type: 0xf, Sect: 0x8, Desc: 0x0, Value: 0x1000010a0}, | 
|  | 84 | macho.Symbol{Name: "_write", Type: 0x1, Sect: 0x0, Desc: 0x100, Value: 0x0}, | 
|  | 85 | macho.Symbol{Name: "dyld_stub_binder", Type: 0x1, Sect: 0x0, Desc: 0x100, Value: 0x0}, | 
|  | 86 | }, | 
|  | 87 | }, | 
|  | 88 | } |