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5l, 6l, 8l: change ELF header so that strip doesn't destroy binary
Fixes issue 261.
R=iant, r
CC=golang-dev
http://codereview.appspot.com/994044
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* switch to real dot (.) instead of center dot (·) everywhere in object files.
before it was half and half depending on where in the name it appeared.
* in 6c/6a/etc identifiers, · can still be used but turns into . immediately.
* in export metadata, replace package identifiers with quoted strings
(still package names, not paths).
R=ken2, r
CC=golang-dev
http://codereview.appspot.com/190076
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because they are in package runtime.
another step to enforcing package boundaries.
R=r
DELTA=732 (114 added, 93 deleted, 525 changed)
OCL=35811
CL=35824
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* in 6l, -K already meant check for stack underflow.
add -KK to mean double-check stack overflows
even in nosplit functions.
* comment out print locks; they deadlock too easily
but are still useful to put back for special occasions.
* let runcgo assembly switch to scheduler stack
without involving scheduler directly. because runcgo
gets called from matchmg, it is too hard to keep it
from being called on other stacks.
R=r
DELTA=94 (65 added, 18 deleted, 11 changed)
OCL=35591
CL=35604
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R=r
DELTA=3214 (904 added, 2260 deleted, 50 changed)
OCL=35425
CL=35427
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better mach binaries.
cgo working on darwin+linux amd64+386.
eliminated context switches - pi is 30x faster.
add libcgo to build.
on snow leopard:
- non-cgo binaries work; all tests pass.
- cgo binaries work on amd64 but not 386.
R=r
DELTA=2031 (1316 added, 626 deleted, 89 changed)
OCL=35264
CL=35304
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if first function in file was dead code, it was being
discarded along with the file name information for that file.
leave the functions in the master function list longer:
let xfol take the dead code out of the code list,
and let span skip the unreachable functions during output.
before
throw: sys·mapaccess1: key not in map
panic PC=0x2e7b20
throw+0x33 /Users/rsc/go/src/pkg/runtime/runtime.c:65
throw(0x5834f, 0x0)
sys·mapaccess1+0x73 /Users/rsc/go/src/pkg/runtime/hashmap.c:769
sys·mapaccess1(0x2b9bd0, 0x0)
gob·*Encoder·Encode+0x16b /Users/rsc/go/src/pkg/fmt/print.go:2926
gob·*Encoder·Encode(0x2bb440, 0x0, 0x558b0, 0x0, 0x2e4be0, ...)
main·walk+0x331 :1603
main·walk(0x33a480, 0x0)
main·walk+0x271 :1596
main·walk(0x300640, 0x0)
main·walk+0x271 :1596
main·walk(0x300520, 0x0)
main·walk+0x271 :1596
main·walk(0x300240, 0x0)
main·walk+0x271 :1596
main·walk(0x678f8, 0x0)
main·main+0x22 :1610
main·main()
after
throw: sys·mapaccess1: key not in map
panic PC=0x2e7b20
throw+0x33 /Users/rsc/go/src/pkg/runtime/runtime.c:65
throw(0x5834f, 0x0)
sys·mapaccess1+0x73 /Users/rsc/go/src/pkg/runtime/hashmap.c:769
sys·mapaccess1(0x2b9bd0, 0x0)
gob·*Encoder·Encode+0x16b /Users/rsc/go/src/pkg/gob/encoder.go:319
gob·*Encoder·Encode(0x2bb3c0, 0x0, 0x558b0, 0x0, 0x2e4be0, ...)
main·walk+0x331 /Users/rsc/dir.go:121
main·walk(0x2f6ab0, 0x0)
main·walk+0x271 /Users/rsc/dir.go:114
main·walk(0x301640, 0x0)
main·walk+0x271 /Users/rsc/dir.go:114
main·walk(0x301520, 0x0)
main·walk+0x271 /Users/rsc/dir.go:114
main·walk(0x301240, 0x0)
main·walk+0x271 /Users/rsc/dir.go:114
main·walk(0x678f8, 0x0)
main·main+0x22 /Users/rsc/dir.go:128
main·main()
mainstart+0xe /Users/rsc/go/src/pkg/runtime/amd64/asm.s:55
mainstart()
goexit /Users/rsc/go/src/pkg/runtime/proc.c:133
goexit()
R=r
DELTA=46 (20 added, 25 deleted, 1 changed)
OCL=34094
CL=34103
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* remove now-unused D_SBIG (was for typestrings)
* rename elf64.[ch] to elf.[ch]
* pull in elf headers from FreeBSD instead of writing our own
* emit non-header ELF data in data section
* stub out a few more ELF sections needed for dynamic loading
R=r
DELTA=1928 (1237 added, 635 deleted, 56 changed)
OCL=33642
CL=33658
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do not emit unreachable data symbols.
R=austin
DELTA=103 (71 added, 4 deleted, 28 changed)
OCL=33325
CL=33622
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introduced explicit "data" symbol instead of etext
to mark beginning of data, so that using larger
alignment (i.e. 4MB like GNU loader) doesn't
confuse garbage collector.
split dodata into dodata and dobss in preparation
for putting the dynamic data + headers in the data
segment instead of stuffed at the beginning of the binary.
R=r
DELTA=52 (37 added, 3 deleted, 12 changed)
OCL=33610
CL=33618
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before:
mainstart: undefined: main·init in mainstart
mainstart: branch out of range in mainstart
(95) CALL ,0(PC) [main·init]
mainstart: undefined: main·main in mainstart
mainstart: branch out of range in mainstart
(97) CALL ,0(PC) [main·main]
mainstart: doasm: notfound from=6f to=6f (95) CALL ,
mainstart: doasm: notfound from=6f to=6f (97) CALL ,
mainstart: doasm: notfound from=6f to=6f (95) CALL ,
mainstart: doasm: notfound from=6f to=6f (97) CALL ,
mainstart: doasm: notfound from=6f to=6f (95) CALL ,
mainstart: doasm: notfound from=6f to=6f (97) CALL ,
after:
mainstart: undefined: main·init in mainstart
mainstart: undefined: main·main in mainstart
R=r
DELTA=7 (1 added, 0 deleted, 6 changed)
OCL=31555
CL=31555
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R=r
OCL=28204
CL=28204
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better calling of morestack
R=r
OCL=28179
CL=28179
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160 - 75 was just barely not enough for deferproc + morestack.
added enum names and bumped to 256 - 128.
added explanation.
changed a few mal() (garbage-collected) to
malloc()/free() (manually collected).
R=ken
OCL=26981
CL=26981
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cuts simple test binary by 7%.
would be more except for reflection.
R=r
DELTA=126 (117 added, 4 deleted, 5 changed)
OCL=23163
CL=23237
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(makes go libraries behave more like c libraries.)
R=r
DELTA=85 (67 added, 12 deleted, 6 changed)
OCL=23133
CL=23139
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but not JMP main (label).
R=ken
OCL=20724
CL=20724
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in favor of using in-memory copy of symbol table.
$ ls -l pretty pretty.big
-rwxr-xr-x 1 rsc eng 439516 Nov 21 16:43 pretty
-rwxr-xr-x 1 rsc eng 580984 Nov 21 16:20 pretty.big
$
R=r
DELTA=446 (238 added, 178 deleted, 30 changed)
OCL=19851
CL=19884
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add sys.unreflect, which uses gotypesigs.
R=r
DELTA=170 (152 added, 12 deleted, 6 changed)
OCL=18396
CL=18404
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R=ken
OCL=17833
CL=17833
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R=ken
OCL=17832
CL=17832
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R=r
DELTA=0 (0 added, 0 deleted, 0 changed)
OCL=15492
CL=15494
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R=ken
DELTA=38 (36 added, 0 deleted, 2 changed)
OCL=15482
CL=15491
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if stack is in low memory and frame size is huge, test could wrap around!
fix by omitting test altogether if we know frame is big.
R=gri
OCL=14782
CL=14782
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these guys really really want long to be 32-bits,
so ,s/long/int32/ (and then manual fixup).
still passes all tests.
(i started out looking for just those longs that
needed to be int32 instead, and it was just too hard
to track them down one by one.)
the longs were rare enough that i don't think
it will cause integration problems.
R=ken
OCL=13787
CL=13789
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SVN=126929
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SVN=125267
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SVN=125151
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SVN=123521
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SVN=121164
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