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Set the "simple" bit in the .o65 mode word only if text, data, and bss
are adjacent.
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parent
1e4a7454b6
commit
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@ -1320,18 +1320,26 @@ static void O65SetupHeader (O65Desc* D)
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SegDesc* FirstSeg = D->ZPSeg [0];
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D->Header.ZPBase = FirstSeg->Seg->PC;
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}
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}
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/* If we have byte wise relocation and an alignment of 1, we can set
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* the "simple addressing" bit in the header.
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static void O65UpdateHeader (O65Desc* D)
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/* Update mode word, currently only the "simple" bit */
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{
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/* If we have byte wise relocation and an alignment of 1, and text
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* and data are adjacent, we can set the "simple addressing" bit
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* in the header.
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*/
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if ((D->Header.Mode & MF_RELOC_MASK) == MF_RELOC_BYTE &&
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(D->Header.Mode & MF_ALIGN_MASK) == MF_ALIGN_1) {
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(D->Header.Mode & MF_ALIGN_MASK) == MF_ALIGN_1 &&
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D->Header.TextBase + D->Header.TextSize == D->Header.DataBase &&
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D->Header.DataBase + D->Header.DataSize == D->Header.BssBase) {
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D->Header.Mode = (D->Header.Mode & ~MF_ADDR_MASK) | MF_ADDR_SIMPLE;
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}
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}
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void O65WriteTarget (O65Desc* D, File* F)
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/* Write an o65 output file */
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{
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@ -1411,6 +1419,9 @@ void O65WriteTarget (O65Desc* D, File* F)
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/* Write the list of exports */
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O65WriteExports (D);
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/* Update header flags */
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O65UpdateHeader (D);
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/* Seek back to the start and write the updated header */
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fseek (D->F, 0, SEEK_SET);
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O65WriteHeader (D);
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