1/*****************************************************************************/
2/* */
3/* fragment.c */
4/* */
5/* Code/data fragment routines */
6/* */
7/* */
8/* */
9/* (C) 1998-2011, Ullrich von Bassewitz */
10/* Roemerstrasse 52 */
11/* D-70794 Filderstadt */
12/* EMail: uz@cc65.org */
13/* */
14/* */
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. */
18/* */
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: */
22/* */
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 */
30/* distribution. */
31/* */
32/*****************************************************************************/
33
34
35
36/* common */
37#include "fragdefs.h"
38#include "xmalloc.h"
39
40/* ld65 */
41#include "error.h"
42#include "fragment.h"
43#include "objdata.h"
44#include "segments.h"
45
46
47
48/*****************************************************************************/
49/* Code */
50/*****************************************************************************/
51
52
53
54Fragment* NewFragment (unsigned char Type, unsigned Size, Section* S)
55/* Create a new fragment and insert it into the section S */
56{
57 Fragment* F;
58
59 /* Calculate the size of the memory block. LitBuf is only needed if the
60 ** fragment contains literal data.
61 */
62 unsigned FragSize = sizeof (Fragment) - 1;
63 if (Type == FRAG_LITERAL) {
64 FragSize += Size;
65 }
66
67 /* Allocate memory */
68 F = xmalloc (FragSize);
69
70 /* Initialize the data */
71 F->Next = 0;
72 F->Obj = 0;
73 F->Sec = S;
74 F->Size = Size;
75 F->Expr = 0;
76 F->LineInfos = EmptyCollection;
77 F->Type = Type;
78
79 /* Insert the code fragment into the section */
80 if (S->FragRoot == 0) {
81 /* First fragment */
82 S->FragRoot = F;
83 } else {
84 S->FragLast->Next = F;
85 }
86 S->FragLast = F;
87
88 /* Increment the size of the section by the size of the fragment */
89 S->Size += Size;
90
91 /* Increment the size of the segment that contains the section */
92 S->Seg->Size += Size;
93
94 /* Return the new fragment */
95 return F;
96}
97