DIRECTORY TargetArchitecture, BreakWorldArchitecture, Rope USING [ROPE]; Shepherd: CEDAR DEFINITIONS ~ { Patch: TYPE ~ REF PatchRep _ nullPatch; nullPatch: Patch ~ NIL; PatchRep: TYPE; PatchHeaderStruct: PRIVATE TYPE ~ MACHINE DEPENDENT RECORD [ size (0:0..7): PatchSize, relPCMS (0:8..15): RelPCMS, relPCLS (0:16..31): RelPCLS ]; PatchSize: TYPE ~ CARDINAL [0..255]; RelPCMS: TYPE ~ CARDINAL [firstRelPCMS .. lastRelPCMS]; firstRelPCMS: CARDINAL ~ 0; lastRelPCMS: CARDINAL ~ 255; RelPCLS: TYPE ~ CARDINAL [firstRelPCLS .. lastRelPCLS]; firstRelPCLS: CARDINAL ~ 0; lastRelPCLS: CARDINAL ~ 65535; RelPC: TYPE ~ TargetArchitecture.Displacement; firstRelPC: INT32 ~ -8388608; lastRelPC: INT32 ~ +8388607; Meadow: TYPE ~ REF MeadowRep _ nullMeadow; nullMeadow: Meadow ~ NIL; MeadowRep: TYPE; IsNullMeadow: PROCEDURE [meadow: Meadow] RETURNS [BOOLEAN]; ReservePatch: PROCEDURE [ pc: BreakWorldArchitecture.Address, codeSize: BreakWorldArchitecture.ByteSize] RETURNS [Patch]; ReleasePatch: PROCEDURE [patch: Patch] RETURNS []; IsNullPatch: PROCEDURE [patch: Patch] RETURNS [BOOLEAN]; IsBusyPC: PROCEDURE [pc: BreakWorldArchitecture.Address] RETURNS [BOOLEAN]; MeadowFromPatch: PROCEDURE [patch: Patch] RETURNS [Meadow]; PCFromPatch: PROCEDURE [patch: Patch] RETURNS [BreakWorldArchitecture.Address]; PatchAddressFromPatch: PROCEDURE [patch: Patch] RETURNS [BreakWorldArchitecture.Address]; CodeAddressFromPatch: PROCEDURE [patch: Patch] RETURNS [BreakWorldArchitecture.Address]; PatchFromPC: PROCEDURE [pc: BreakWorldArchitecture.Address] RETURNS [Patch]; IsAllocatedPatch: PROCEDURE [patch: Patch] RETURNS [BOOLEAN]; ErrorMessage: TYPE ~ Rope.ROPE _ nullErrorMessage; nullErrorMessage: ErrorMessage ~ NIL; NoRoom: ERROR [message: ErrorMessage]; NoMeadow: ERROR [message: ErrorMessage]; BusyMeadow: ERROR [message: ErrorMessage]; BusyPC: ERROR [message: ErrorMessage]; CantReach: ERROR [message: ErrorMessage]; Cant: ERROR [message: ErrorMessage]; }.  Shepherd.mesa Copyright Σ 1989, 1990 by Xerox Corporation. All rights reserved. Peter B. Kessler, April 18, 1990 12:55 pm PDT This interface is dedicated to Ernest H. Shepherd. Types. Each patch has a PatchHeader prepended to it to say what pc it's a patch for (so various clients don't compete for pc's, and a size, to say how big the patch is. This is a translation of the structs declared in patch.h. in words! Procedures. ! NoRoom, NoMeadow, BusyMeadow, BusyAddress. ! NoMeadow, BusyMeadow Errors. ΚH– "cedar" style•NewlineDelimiter ™code™ Kšœ Οrœ7™BKšœ-™-K™—™2K™šΟk ˜ K˜Kšœ˜Kšœžœžœ˜—K˜—unitšΠlnœžœž œ˜head™šœžœžœ˜'Kšœžœ˜Kšœ žœ˜K˜K™‘š œžœžœžœž œžœ˜