xref: /llvm-project/llvm/test/tools/llvm-objcopy/ELF/binary-paddr.test (revision c973123fdca7c32d2f7cbbf19883677c81e1edb0) 
1## The computed LMA of a section in a PT_LOAD equals sh_offset-p_offset+p_paddr.
2## The byte offset difference between two sections equals the difference between their LMAs.
3
4## Corollary: if two sections are in the same PT_LOAD, the byte offset
5## difference equals the difference between their sh_addr fields.
6
7# RUN: yaml2obj --docnum=1 %s -o %t1
8# RUN: llvm-objcopy -O binary %t1 %t1.out
9# RUN: od -A x -t x2 %t1.out | FileCheck %s --check-prefix=CHECK1 --ignore-case
10# RUN: wc -c %t1.out | FileCheck %s --check-prefix=SIZE1
11
12# CHECK1:      000000 c3c3 c3c3 0000 0000 0000 0000 0000 0000
13# CHECK1-NEXT: 000010 0000 0000 0000 0000 0000 0000 0000 0000
14# CHECK1-NEXT: *
15# CHECK1-NEXT: 001000 3232
16# SIZE1:       4098
17
18--- !ELF
19FileHeader:
20  Class:           ELFCLASS64
21  Data:            ELFDATA2LSB
22  Type:            ET_EXEC
23  Machine:         EM_X86_64
24Sections:
25  - Name:            .text
26    Type:            SHT_PROGBITS
27    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
28    Address:         0x1000
29    AddressAlign:    0x1000
30    Content:         "c3c3c3c3"
31  - Name:            .data
32    Type:            SHT_PROGBITS
33    Flags:           [ SHF_ALLOC, SHF_WRITE ]
34    Address:         0x2000
35    AddressAlign:    0x1000
36    Content:         "3232"
37ProgramHeaders:
38  - Type:     PT_LOAD
39    Flags:    [ PF_R, PF_W ]
40    FirstSec: .text
41    LastSec:  .data
42
43## The computed LMA of a section not in a PT_LOAD equals its sh_addr.
44
45# RUN: yaml2obj --docnum=2 %s -o %t2
46# RUN: llvm-objcopy -O binary %t2 %t2.out
47# RUN: od -A x -t x2 %t2.out | FileCheck %s --check-prefix=CHECK2 --ignore-case
48# RUN: wc -c %t2.out | FileCheck %s --check-prefix=SIZE2
49
50## The computed LMA of .data is 0x4000. The minimum LMA of all non-empty sections is 0x1000.
51## The content of .data will be written at 0x4000-0x1000 = 0x3000.
52# CHECK2:      000000 c3c3 c3c3 0000 0000 0000 0000 0000 0000
53# CHECK2-NEXT: 000010 0000 0000 0000 0000 0000 0000 0000 0000
54# CHECK2-NEXT: *
55# CHECK2-NEXT: 003000 3232
56# SIZE2:       12290
57
58--- !ELF
59FileHeader:
60  Class:           ELFCLASS64
61  Data:            ELFDATA2LSB
62  Type:            ET_EXEC
63  Machine:         EM_X86_64
64Sections:
65  - Name:            .text
66    Type:            SHT_PROGBITS
67    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
68    ## Not in a PT_LOAD. LMA = sh_addr = 0x1000.
69    Address:         0x1000
70    AddressAlign:    0x1000
71    Content:         "c3c3c3c3"
72  - Name:            .data
73    Type:            SHT_PROGBITS
74    Flags:           [ SHF_ALLOC, SHF_WRITE ]
75    ## LMA = sh_offset-p_offset+p_paddr = 0x2000-0x2000+0x4000 = 0x4000.
76    Address:         0x2000
77    AddressAlign:    0x1000
78    Content:         "3232"
79ProgramHeaders:
80  - Type:     PT_LOAD
81    Flags:    [ PF_R, PF_W ]
82    VAddr:    0x2000
83    ## p_vaddr is increased from 0x2000 to 0x4000.
84    PAddr:    0x4000
85    FirstSec: .data
86    LastSec:  .data
87
88## Check that we use sh_offset instead of sh_addr to decide where to write section contents.
89
90# RUN: yaml2obj --docnum=3 %s -o %t3
91# RUN: llvm-objcopy -O binary %t3 %t3.out
92# RUN: od -A x -t x2 %t3.out | FileCheck %s --check-prefix=CHECK3 --ignore-case
93# RUN: wc -c %t3.out | FileCheck %s --check-prefix=SIZE3
94
95## The minimum LMA of all non-empty sections is 0x1000.
96## The content of .data will be written at 0x3000-0x1000 = 0x2000.
97# CHECK3:      000000 c3c3 c3c3 0000 0000 0000 0000 0000 0000
98# CHECK3-NEXT: 000010 0000 0000 0000 0000 0000 0000 0000 0000
99# CHECK3-NEXT: *
100# CHECK3-NEXT: 002000 3232
101# SIZE3:       8194
102
103--- !ELF
104FileHeader:
105  Class:           ELFCLASS64
106  Data:            ELFDATA2LSB
107  Type:            ET_EXEC
108  Machine:         EM_X86_64
109Sections:
110  - Name:            .text
111    Type:            SHT_PROGBITS
112    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
113    ## Not in a PT_LOAD. LMA = sh_addr = 0x1000.
114    Address:         0x1000
115    AddressAlign:    0x1000
116    Content:         "c3c3c3c3"
117  - Name:            .data
118    Type:            SHT_PROGBITS
119    Flags:           [ SHF_ALLOC, SHF_WRITE ]
120    ## sh_addr is increased from 0x2000 to 0x3000, but it is ignored.
121    ## LMA = sh_offset-p_offset+p_paddr = 0x2000-0x2000+0x3000 = 0x3000.
122    Address:         0x3000
123    AddressAlign:    0x1000
124    Content:         "3232"
125ProgramHeaders:
126  - Type:     PT_LOAD
127    Flags:    [ PF_R, PF_W ]
128    VAddr:    0x3000
129    FirstSec: .data
130    LastSec:  .data
131
132## The first section (.text) is empty. Test that we skip its LMA until the first
133## non-empty section, otherwise we would leave a large number of leading zeroes.
134# RUN: yaml2obj --docnum=4 %s -o %t4
135# RUN: llvm-objcopy -O binary %t4 %t4.out
136# RUN: od -A x -t x2 %t4.out | FileCheck %s --check-prefix=SKIPEMPTY
137
138# SKIPEMPTY:      000000 3232
139# SKIPEMPTY-NEXT: 000002
140
141--- !ELF
142FileHeader:
143  Class:   ELFCLASS64
144  Data:    ELFDATA2LSB
145  Type:    ET_EXEC
146  Machine: EM_X86_64
147Sections:
148  - Name:         .text
149    Type:         SHT_PROGBITS
150    Flags:        [ SHF_ALLOC, SHF_EXECINSTR ]
151    Address:      0x1000
152    AddressAlign: 0x1000
153  - Name:         gap
154    Type:         Fill
155    Size:         0x1000
156  - Name:         .data
157    Type:         SHT_PROGBITS
158    Flags:        [ SHF_ALLOC, SHF_WRITE ]
159    Content:      "3232"
160
161## The last section (.data) is empty. Test that we stop dumping after the last
162## non-empty section, otherwise we would leave a large number of trailing zeroes.
163# RUN: yaml2obj --docnum=5 %s -o %t5
164# RUN: llvm-objcopy -O binary %t5 %t5.out
165# RUN: od -A x -t x2 %t5.out | FileCheck %s --check-prefix=SKIPEMPTY
166
167--- !ELF
168FileHeader:
169  Class:   ELFCLASS64
170  Data:    ELFDATA2LSB
171  Type:    ET_EXEC
172  Machine: EM_X86_64
173Sections:
174  - Name:         .text
175    Type:         SHT_PROGBITS
176    Flags:        [ SHF_ALLOC, SHF_EXECINSTR ]
177    Address:      0x1000
178    AddressAlign: 0x1000
179    Content:      "3232"
180  - Name:         gap
181    Type:         Fill
182    Size:         0xffd
183  - Name:         .data
184    Type:         SHT_PROGBITS
185    Flags:        [ SHF_ALLOC, SHF_WRITE ]
186
187## NOBITS sections should not appear in output.
188# RUN: yaml2obj --docnum=6 %s -o %t6
189# RUN: llvm-objcopy -O binary %t6 %t6.out
190# RUN: od -A x -t x2 %t6.out | FileCheck %s --check-prefix=SKIPNOBITS --ignore-case
191
192# SKIPNOBITS:      000000 c3c3 c3c3
193# SKIPNOBITS-NEXT: 000004
194
195--- !ELF
196FileHeader:
197  Class:   ELFCLASS64
198  Data:    ELFDATA2LSB
199  Type:    ET_EXEC
200  Machine: EM_X86_64
201Sections:
202  - Name:         .bss
203    Type:         SHT_NOBITS
204    Flags:        [ SHF_ALLOC ]
205    Address:      0x1000
206    AddressAlign: 0x1000
207    Size:         0x123
208  - Name:         gap
209    Type:         Fill
210    Size:         0xffd
211  - Name:         .text
212    Type:         SHT_PROGBITS
213    Flags:        [ SHF_ALLOC, SHF_EXECINSTR ]
214    Address:      0x4000
215    AddressAlign: 0x1000
216    Content:      "c3c3c3c3"
217
218## If .bss is converted to non-SHT_NOBITS, align its new offset. This may affect
219## the output size.
220# RUN: yaml2obj --docnum=7 %s -o %t7
221# RUN: llvm-objcopy -O binary --set-section-flags .bss=alloc,contents %t7 %t7.out
222# RUN: od -A x -t x2 %t7.out | FileCheck %s --check-prefix=FILLNOBITS --ignore-case
223
224# FILLNOBITS:      000000 c3c3 0000 0000 0000 0000 0000 0000 0000
225# FILLNOBITS-NEXT: 000010 0000 00
226# FILLNOBITS-NEXT: 000013
227
228--- !ELF
229FileHeader:
230  Class:   ELFCLASS64
231  Data:    ELFDATA2LSB
232  Type:    ET_EXEC
233  Machine: EM_X86_64
234Sections:
235  - Name:         .text
236    Type:         SHT_PROGBITS
237    Flags:        [ SHF_ALLOC, SHF_EXECINSTR ]
238    Address:      0x1000
239    AddressAlign: 0x1000
240    Content:      "c3c3"
241  - Name:         .bss
242    Type:         SHT_NOBITS
243    Flags:        [ SHF_ALLOC ]
244    ## sh_offset is not aligned.
245    ShOffset:     0x1002
246    Size:         0x3
247    AddressAlign: 0x10
248ProgramHeaders:
249  - Type:     PT_LOAD
250    Flags:    [ PF_R, PF_W, PF_X ]
251    Offset:   0x1000
252    VAddr:    0x1000
253    PAddr:    0x1000
254    FileSize: 0x2
255    MemSize:  0x13
256    Align:    0x1000
257
258## Test that sections do not move relative to their physical addresses if
259## the physical address is not aligned. This behavior matches GNU objcopy
260## and is important for embedded images where the physical address is
261## used to store the initial data image. Without converting the type of a
262## NOBITS section, don't align the offset. This matches GNU objcopy when
263## the physical address of a section is not aligned.
264
265# RUN: yaml2obj --docnum=8 %s -o %t8
266# RUN: llvm-objcopy -O binary --only-section=.text --only-section=.data %t8 %t8.out
267# RUN: od -A x -t x1 %t8.out | FileCheck %s --check-prefix=PHYSUNALIGNED --ignore-case
268
269# PHYSUNALIGNED:      000000 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff 00
270# PHYSUNALIGNED-NEXT: 000010 11 22 33 44 bd ac cd ab
271
272--- !ELF
273FileHeader:
274  Class:           ELFCLASS64
275  Data:            ELFDATA2LSB
276  Type:            ET_EXEC
277  Machine:         EM_X86_64
278ProgramHeaders:
279  - Type:            PT_LOAD
280    Flags:           [ PF_X, PF_R ]
281    FirstSec:        .text
282    LastSec:         .text
283    VAddr:           0x200000
284    PAddr:           0x200000
285    Align:           0x1000
286  - Type:            PT_LOAD
287    Flags:           [ PF_W, PF_R ]
288    FirstSec:        .data
289    LastSec:         .data
290    VAddr:           0x400000
291    PAddr:           0x200014
292## PAddr is not aligned by sh_addralign(.data)
293    Align:           0x1000
294Sections:
295  - Name:            .text
296    Type:            SHT_PROGBITS
297    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
298    Address:         0x200000
299    AddressAlign:    0x1
300    Offset:          0x1000
301    Content:         112233445566778899aabbccddeeff0011223344
302  - Name:            .data
303    Type:            SHT_PROGBITS
304    Flags:           [ SHF_WRITE, SHF_ALLOC ]
305    Address:         0x400000
306    AddressAlign:    0x8
307    Offset:          0x2000
308    Content:         BDACCDAB
309