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https://github.com/DoctorWkt/unix-jun72.git
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b5a8011b93
these. Modified patches/core/v2_as.patch so that we no longer need sys1.s, and changed tools/assemv2 to no longer create sys1.s.
38 lines
1.1 KiB
Diff
38 lines
1.1 KiB
Diff
diff -ru rebuilt/u2.s build/u2.s
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--- rebuilt/u2.s 2008-05-04 15:29:30.000000000 -1000
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+++ build/u2.s 2008-05-04 15:45:52.000000000 -1000
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@@ -177,6 +177,33 @@
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/ number of words less 26 available for
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/ program in user core
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mov r5,u.count /
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+
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+ / 0407 binary support added may 2008.
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+ br 1f
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+bsz: 0 / XXX is there a reg that I can use over a call to readi?
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+1:
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+ cmp core,$407
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+ bne e407
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+ add $4,u.off / skip last two header words
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+ mov $core,r4
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+ mov r4,u.base / continue reading at core.
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+ mov core+2,r5
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+ add core+4,r5 / r5 = text+data size
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+ mov core+6,bsz / save bss size, we're going to overwrite core
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+ / XXX fix me, I dont quite understand what to do here or
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+ / what is done in the similar code below e407:
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+ / cmp r5, u.count / see if theres enough room
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+ / bgt 1f
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+ mov r5,u.count / read text+data into core
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+ jsr r0,readi
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+ mov u.nread,u.break / break = core + nread + bss
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+ add $core,u.break
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+ add bsz,u.break
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+ jsr r0,iclose
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+ br sysret3
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+e407:
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+ / end 0407 support
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+
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cmp core,$405 / br .+14 is first instruction if file is
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/ standard a.out format
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bne 1f / branch, if not standard format
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