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Fix wrong LVO offsets in the exec and dos tables

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exec.library: Forbid, Permit, Disable and Enable were in the wrong
slots. Forbid/Permit move to -132/-138 and Disable/Enable to -120/-126.

dos.library: the table left out six private vectors but kept counting
as though they were not there, so every row after a missing one was
shifted, ending 36 bytes out. Restores ClearVec (-162), NoReqLoadSeg
(-168), Cli (-492), DosNameFromAnchor (-852), PathPart (-876) and
CliInit (-924) and realigns the rest.

Also fixes copies of the same wrong exec values, plus several wrong dos
offsets, in api_call_identification.md and setfunction_patching.md.

Checked against ADCD 2.1 References/Function.offs. V39 names in the
exec table (CreatePool, CachePreDMA, AddMemHandler and so on) are left
as they were, since they are more current than ADCD 2.0.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Duncan Bowring 2026-09-20 10:29:12 -04:00
parent c6f6253ea0
commit ebb2dbeef7
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GPG key ID: 6D5A1BFAD252A5B4
4 changed files with 190 additions and 182 deletions
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4
05_reversing/dynamic/setfunction_patching.md
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@ -53,7 +53,7 @@ APTR SetFunction(struct Library *library, LONG funcOffset, APTR newFunction);
; Example: hook dos.library Write() at LVO -48
MOVEA.L _SysBase, A6
JSR (-120,A6) ; Forbid() — prevent preemption during patch
JSR (-132,A6) ; Forbid() — prevent preemption during patch
MOVEA.L _DOSBase, A1
MOVE.L #-48, A0 ; LVO for Write
@ -61,7 +61,7 @@ APTR SetFunction(struct Library *library, LONG funcOffset, APTR newFunction);
JSR (-420,A6) ; SetFunction(DOSBase, -48, &my_write)
MOVE.L D0, _orig_write ; save original function pointer
JSR (-126,A6) ; Permit()
JSR (-138,A6) ; Permit()
```
### C equivalent: