1 /*****************************************************************************/
5 /* Assembler output code handling for the cc65 C compiler */
9 /* (C) 2000-2009, Ullrich von Bassewitz */
10 /* Roemerstrasse 52 */
11 /* D-70794 Filderstadt */
12 /* EMail: uz@cc65.org */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
50 /*****************************************************************************/
52 /*****************************************************************************/
56 void GetCodePos (CodeMark* M)
57 /* Get a marker pointing to the current output position */
59 M->Pos = CS_GetEntryCount (CS->Code);
65 void RemoveCodeRange (const CodeMark* Start, const CodeMark* End)
66 /* Remove all code between two code markers */
68 /* Nothing to do if the range is empty */
69 if (Start->Pos == End->Pos) {
73 /* We can only delete the range if End is the end of the code segment or
74 * if both SP values are identical.
76 CHECK (Start->SP == End->SP || End->Pos == CS_GetEntryCount (CS->Code));
78 /* Delete the range */
79 CS_DelCodeRange (CS->Code, Start->Pos, End->Pos-1);
84 void RemoveCode (const CodeMark* M)
85 /* Remove all code after the given code marker */
87 CS_DelCodeAfter (CS->Code, M->Pos);
93 void MoveCode (const CodeMark* Start, const CodeMark* End, const CodeMark* Target)
94 /* Move the code between Start (inclusive) and End (exclusive) to
95 * (before) Target. The code marks aren't updated.
98 CS_MoveEntries (CS->Code, Start->Pos, End->Pos - Start->Pos, Target->Pos);
103 int CodeRangeIsEmpty (const CodeMark* Start, const CodeMark* End)
104 /* Return true if the given code range is empty (no code between Start and End) */
107 PRECONDITION (Start->Pos <= End->Pos);
108 Empty = (Start->Pos == End->Pos);
111 CHECK (Start->SP == End->SP);
118 void WriteAsmOutput (void)
119 /* Write the final assembler output to the output file */
124 /* Output the global data segment */
125 CHECK (!HaveGlobalCode ());
128 /* Output all global or referenced functions */
129 SymTab = GetGlobalSymTab ();
130 Entry = SymTab->SymHead;
132 if (IsTypeFunc (Entry->Type) &&
134 (Entry->Flags & (SC_REF | SC_EXTERN)) != 0) {
135 /* Function which is defined and referenced or extern */
136 CS_MergeLabels (Entry->V.F.Seg->Code);
137 RunOpt (Entry->V.F.Seg->Code);
138 OutputSegments (Entry->V.F.Seg);
140 Entry = Entry->NextSym;