35 lines
1.3 KiB
C
Executable File
35 lines
1.3 KiB
C
Executable File
/* SPARC-specific values for a.out files */
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#define PAGE_SIZE 0x2000 /* 8K. aka NBPG in <sys/param.h> */
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/* Note that some SPARCs have 4K pages, some 8K, some others. */
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#define SEG_SIZE_SPARC PAGE_SIZE
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#define SEG_SIZE_SUN3 0x20000 /* Resolution of r/w protection hw */
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#define TEXT_START_ADDR PAGE_SIZE /* Location 0 is not accessible */
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/* Non-default definitions of the accessor macros... */
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/* Segment size varies on Sun-3 versus Sun-4. */
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#define N_SEGSIZE(x) (N_MACHTYPE(x) == M_SPARC? SEG_SIZE_SPARC: \
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N_MACHTYPE(x) == M_68020? SEG_SIZE_SUN3: \
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/* Guess? */ PAGE_SIZE)
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/* Offset in a.out file of the text section. For ZMAGIC, the text section
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actually includes the a.out header. */
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#define N_TXTOFF(x) ( (N_MAGIC((x)) == ZMAGIC) ? 0 : EXEC_BYTES_SIZE)
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/* Virtual Address of text segment from the a.out file. For OMAGIC,
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(almost always "unlinked .o's" these days), should be zero.
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Sun added a kludge so that shared libraries linked ZMAGIC get
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an address of zero if a_entry (!!!) is lower than the otherwise
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expected text address. These kludges have gotta go!
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For linked files, should reflect reality if we know it. */
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#define N_TXTADDR(x) \
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(N_MAGIC(x)==OMAGIC? 0 \
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: (N_MAGIC(x) == ZMAGIC && (x).a_entry < TEXT_START_ADDR)? 0 \
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: TEXT_START_ADDR)
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