Subversion Repositories NedoOS

# file opened: relocation_temporary_labels_exp.asm
 1    0000              ; since v1.19.0 it is possible to use temporary labels also in expressions,
 2    0000              ; but it was not test-covered for relocation use cases, adding the test (and fix) now
 3    0000
 4    0000              ; first section is not part of relocation table
 5    0000                  ORG $1000
 6    1000              2:
 7    1000
 8    1000 21 00 10         ld      hl,2_B
 9    1003 21 09 10         ld      hl,2_F
10    1006 21 0D 10         ld      hl,3_F              ; not in relocation table, even with relocatable label
11    1009
12    1009              2:
13    1009
14    1009              ; second section does test relocation
15    1009
16    1009                  RELOCATE_START
17    1009
18    1009                  ASSERT 2 * relocate_count == relocate_size
19    1009                  ASSERT 8 == relocate_count
20    1009 08 00            dw      relocate_count
21    100B 10 00            dw      relocate_size
22    100D
23    100D              3:                              ; usage of this label should trigger relocation
24    100D
25    100D                  ORG $2000
26    2000                  ; no relocation cases
27    2000 21 09 10         ld      hl,2_B
28    2003 21 1F 40         ld      hl,2_F
29    2006 21 0D 10         ld      hl,norel 3_B
30    2009 21 0F 40         ld      hl,norel 3_F
31    200C 21 41 22         ld      hl,norel 3_B + 0x1234
32    200F 21 43 52         ld      hl,norel 3_F + 0x1234
33    2012 21 41 22         ld      hl,0x1234 + norel 3_B
34    2015 21 43 52         ld      hl,0x1234 + norel 3_F
35    2018 21 02 30         ld      hl,3_F - 3_B
36    201B C3 0D 10         jp      norel 3_B
37    201E C3 0F 40         jp      norel 3_F
38    2021
39    2021                  ORG $3000
40    3000                  ; relocation cases
41    3000 21 0D 10         ld      hl,3_B
42    3003 21 0F 40         ld      hl,3_F
43    3006 21 41 22         ld      hl,3_B + 0x1234
44    3009 21 43 52         ld      hl,3_F + 0x1234
45    300C 21 41 22         ld      hl,0x1234 + 3_B
46    300F 21 43 52         ld      hl,0x1234 + 3_F
47    3012 C3 0D 10         jp      3_B
48    3015 C3 0F 40         jp      3_F
49    3018
50    3018                  ORG $4000
51    4000                  ; unstable expressions
relocation_temporary_labels_exp.asm(52): warning[reldiverts]: Expression can't be relocated by simple "+offset" mechanics, value diverts differently.
52    4000 21 0D 00         ld      hl,low 3_B
relocation_temporary_labels_exp.asm(53): warning[reldiverts]: Expression can't be relocated by simple "+offset" mechanics, value diverts differently.
53    4003 21 0F 00         ld      hl,low 3_F
relocation_temporary_labels_exp.asm(54): warning[reldiverts]: Expression can't be relocated by simple "+offset" mechanics, value diverts differently.
54    4006 21 10 00         ld      hl,high 3_B
relocation_temporary_labels_exp.asm(55): warning[reldiverts]: Expression can't be relocated by simple "+offset" mechanics, value diverts differently.
55    4009 21 40 00         ld      hl,high 3_F
relocation_temporary_labels_exp.asm(56): warning[reldiverts]: Expression can't be relocated by simple "+offset" mechanics, value diverts differently.
56    400C 21 20 B0         ld      hl,3*3_F - 3_B
57    400F
58    400F              3:                              ; usage of this label should trigger relocation
59    400F
60    400F                  ; the relocation table must be after all temporary labels, as those don't manage
61    400F                  ; to settle down within 3 passes if there's dynamic-size table ahead, and "forward"
62    400F                  ; labels are referenced
63    400F 01 30 04 30      RELOCATE_TABLE              ; should emit the 16 addresses of opcode data
63    4013 07 30 0A 30
63    4017 0D 30 10 30
63    401B 13 30 16 30
64    401F
65    401F                  RELOCATE_END
66    401F
67    401F              2:
68    401F
# file closed: relocation_temporary_labels_exp.asm

Value    Label
------ - -----------------------------------------------------------
0x0008   relocate_count
0x0010   relocate_size