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path: root/src/pkg/runtime/darwin/386
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2011-02-14Imported Upstream version 2011-02-01.1upstream/2011-02-01.1Ondřej Surý2-1/+2
2011-01-17Imported Upstream version 2011.01.12upstream/2011.01.12Ondřej Surý4-95/+98
2010-06-28Only catch all signals if os/signal package imported.Ian Lance Taylor1-1/+3
Fixes issue 776. R=rsc CC=golang-dev http://codereview.appspot.com/1745041
2010-06-14runtime: correct fault for 16-bit divide on LeopardRuss Cox1-1/+3
R=r CC=golang-dev http://codereview.appspot.com/1703041
2010-06-12runtime: fix 386 signal handler bugRuss Cox1-4/+8
Cannot assume that g == m->curg at time of signal. Must save actual g and restore. Fixes flaky crashes with messages like throw: malloc mlookup throw: malloc/free - deadlock throw: unwindstack on self throw: free mlookup (and probably others) when running cgo. R=iant CC=golang-dev http://codereview.appspot.com/1648043
2010-05-19runtime: avoid allocation for fixed stringsRuss Cox1-1/+1
R=r CC=golang-dev http://codereview.appspot.com/1083041
2010-05-03runtime: update godefs usage comment for GOARCH=386 GOOS={darwin,freebsd}Giles Lean1-1/+1
When trying to regenerate src/pkg/runtime/darwin/386/defs.h on a 64 bit capable Snow Leopard (OS X 10.6.3) system I needed to add -f -m32 to godefs, as this OS and hardware combination defaults to 64 bit compilation. For safety, make the same change to the 32 bit FreeBSD instructions in .../freebsd/defs.c. (Tested OK and no problems introduced.) R=golang-dev, rsc CC=golang-dev http://codereview.appspot.com/1052042 Committer: Russ Cox <rsc@golang.org>
2010-04-28darwin: bsdthread_create can fail; print good errorRuss Cox1-2/+4
Fixes issue 549. R=adg CC=golang-dev http://codereview.appspot.com/1019042
2010-04-13runtime: better trace for fault due to nil pointer callRuss Cox1-3/+11
R=r CC=golang-dev http://codereview.appspot.com/854048
2010-04-08runtime: turn divide by zero, nil dereference into panicsRuss Cox2-6/+78
tested on linux/amd64, linux/386, linux/arm, darwin/amd64, darwin/386. freebsd untested; will finish in a separate CL. for now all the panics are errorStrings. richer structures can be added as necessary once the mechanism is shaked out. R=r CC=golang-dev http://codereview.appspot.com/906041
2010-04-08runtime: work around kernel bug in Snow Leopard signal handlingRuss Cox1-63/+18
Could not take a signal on threads other than the main thread. If you look at the spinning binary with dtrace, you can see a fault happening over and over: $ dtrace -n ' fbt::user_trap:entry /execname=="boot32" && self->count < 10/ { self->count++; printf("%s %x %x %x %x", probefunc, arg1, arg2, arg3, arg4); stack(); tracemem(arg4, 256); }' dtrace: description 'fbt::user_trap:entry ' matched 1 probe CPU ID FUNCTION:NAME 1 17015 user_trap:entry user_trap 0 10 79af0a0 79af0a0 mach_kernel`lo_alltraps+0x12a 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef 0: 0e 00 00 00 37 00 00 00 00 00 00 00 1f 00 00 00 ....7........... 10: 1f 00 00 00 a8 33 00 00 00 00 00 01 00 00 00 00 .....3.......... 20: 98 ba dc fe 07 09 00 00 00 00 00 00 98 ba dc fe ................ 30: 06 00 00 00 0d 00 00 00 34 00 00 00 9e 1c 00 00 ........4....... 40: 17 00 00 00 00 02 00 00 ac 30 00 00 1f 00 00 00 .........0...... 50: 00 00 00 00 00 00 00 00 0d 00 00 00 e0 e6 29 00 ..............). 60: 34 00 00 00 00 00 00 00 9e 1c 00 00 00 00 00 00 4............... 70: 17 00 00 00 00 00 00 00 00 02 00 00 00 00 00 00 ................ 80: ac 30 00 00 00 00 00 00 1f 00 00 00 00 00 00 00 .0.............. 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ a0: 48 00 00 00 10 00 00 00 85 00 00 00 a0 f2 29 00 H.............). b0: 69 01 00 02 00 00 00 00 e6 93 04 82 ff 7f 00 00 i............... c0: 2f 00 00 00 00 00 00 00 06 02 00 00 00 00 00 00 /............... d0: 78 ee 42 01 01 00 00 00 1f 00 00 00 00 00 00 00 x.B............. e0: 00 ed 9a 07 00 00 00 00 00 00 00 00 00 00 00 00 ................ f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ... The memory dump shows a 32-bit exception frame: x86_saved_state32 gs = 0x37 fs = 0 es = 0x1f ds = 0x1f edi = 0x33a8 esi = 0x01000000 ebp = 0 cr2 = 0xfedcba98 ebx = 0x0907 edx = 0 ecx = 0xfedcba98 eax = 0x06 trapno = 0x0d err = 0x34 eip = 0x1c9e cs = 0x17 efl = 0x0200 uesp = 0x30ac ss = 0x1f The cr2 of 0xfedcba98 is the address that the new thread read to cause the fault, but note that the trap is now a GP fault with error code 0x34, meaning it's moved past the cr2 problem and on to an invaild segment selector. The 0x34 is suspiciously similar to the 0x37 in gs, and sure enough, OS X forces gs to have that value in the signal handler, and if your thread hasn't set up that segment (known as USER_CTHREAD), you'll fault on the IRET into the signal handler and never be able to handle a signal. The kernel bug is that it forces segment 0x37 without making sure it is a valid segment. Leopard also forced 0x37 but had the courtesy to set it up first. Since OS X requires us to set up that segment (using the thread_fast_set_cthread_self system call), we might as well use it instead of the more complicated i386_set_ldt call to set up our per-OS thread storage. Also add some more zeros to bsdthread_register for new arguments in Snow Leopard (apparently unnecessary, but being careful). Fixes issue 510. R=r CC=golang-dev http://codereview.appspot.com/824046
2010-04-05runtime: various arm fixesRuss Cox1-1/+1
* correct symbol table size * do not reorder functions in output * traceback * signal handling * use same code for go + defer * handle leaf functions in symbol table R=kaib, dpx CC=golang-dev http://codereview.appspot.com/884041
2010-02-08runtime: instrument malloc + garbage collector.Russ Cox1-0/+16
add simple garbage collection benchmark. R=iant CC=golang-dev http://codereview.appspot.com/204053
2010-01-25in C and asm, replace pkg·name with ·nameRuss Cox1-1/+1
(eliminate assumption of package global name space, make code easier to move between packages). R=r CC=golang-dev http://codereview.appspot.com/194072
2010-01-06Ported runtime to Windows.Hector Chu1-6/+9
R=rsc CC=golang-dev http://codereview.appspot.com/176066 Committer: Russ Cox <rsc@golang.org>
2009-12-16runtime: if os/signal is not in use, crash onRuss Cox1-2/+3
most signals, so that ordinary programs can be killed, for example. Fixes issue 434. R=dsymonds1 CC=golang-dev, hoisie http://codereview.appspot.com/180064
2009-12-15os/signal: new packageDavid Symonds1-2/+16
Fixes issue 71. R=rsc, r http://codereview.appspot.com/162056 Committer: Russ Cox <rsc@golang.org>
2009-12-08Fix stack on FreeBSD / add stack check across the boardDevon H. O'Dell1-0/+1
FreeBSD was passing stk as the new thread's stack base, while stk is the top of the stack in go. The added check should cause a trap if this ever comes up in any new ports, or regresses in current ones. R=rsc CC=golang-dev http://codereview.appspot.com/167055 Committer: Russ Cox <rsc@golang.org>
2009-11-19runtime: mask signals during signal handler on OS XRuss Cox1-1/+1
Fixes issue 265. R=r CC=golang-dev http://codereview.appspot.com/157084
2009-11-18Remove unnecessary execute bits.William Josephson1-0/+0
R=rsc http://codereview.appspot.com/156077 Committer: Russ Cox <rsc@golang.org>
2009-11-17runtime: two trivial but important bug fixesRuss Cox1-1/+1
R=r http://codereview.appspot.com/156059
2009-11-16runtime: make signal handler work on 386Russ Cox1-6/+17
R=r http://codereview.appspot.com/154171
2009-10-15rename sys functions to runtime,Russ Cox1-1/+1
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
2009-10-038c, 8l dynamic loading support.Russ Cox1-13/+26
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
2009-09-22changes to accommodate nacl:Russ Cox1-0/+6
* change ldt0setup to set GS itself; nacl won't let us do it. * change breakpoint to INT $3 so 8l can translate to HLT for nacl. * panic if closure is needed on nacl. * do not try to access symbol table on nacl. * mmap in 64kB chunks. nacl support: * system calls, threading, locks. R=r DELTA=365 (357 added, 5 deleted, 3 changed) OCL=34880 CL=34906
2009-09-21convert 386 to use %gs instead of %fs for extern register.Russ Cox1-1/+1
required for nacl and may be nicer for ffi, because %gs is the standard register for thread-local storage. R=ken OCL=34861 CL=34866
2009-06-17update 386 to new runtime (CL 30381)Russ Cox1-10/+13
R=r DELTA=298 (119 added, 81 deleted, 98 changed) OCL=30427 CL=30443
2009-06-09mv src/lib to src/pkgRob Pike4-0/+618
tests: all.bash passes, gobuild still works, godoc still works. R=rsc OCL=30096 CL=30102
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