1. Deopts on division when neither vfp nor idiv are present.
In a subsequent CL, I can add a leaf runtime call for this.
2. Uses a different PC read offset in STR and STM instructions.
On ARMv5 and earlier, the PC read offset is 8 except in STR
and STM instructions, where it is implementation defined. On
lego mindstorm it is 12. This requires changing
kEntryPointToPcMarkerOffset to be a function.
3. Uses a dummy struct to compute the size of a compressed
pc descriptor to avoid alignment issues. sizeof(PcDescriptorRec)
is 16 on ia32 and arm. Subtracting sizeof(int16_t) gives 14,
which creates alignment problems on ARM, i.e. poor performance on
ARMv6 and later, and wrong results on ARMv5 and earlier.
R=regis@google.com
Review URL: https://codereview.chromium.org//467103005
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@39250 260f80e4-7a28-3924-810f-c04153c831b5
This change rewrites the code from the ARM assembler for parsing /proc/cpuinfo on Linux and Android, and collects it into a CpuInfo class that can be used for other architectures as well. This code is in cpuinfo_*.cc. /proc/cpuinfo equivalents are used for Mac and Windows. CpuInfo is used by the VM service to report on the hardware dart is running on. In the future CpuInfo can also be used here to provide more information.
R=iposva@google.com, johnmccutchan@google.com
Review URL: https://codereview.chromium.org//120723003
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@32468 260f80e4-7a28-3924-810f-c04153c831b5
This function can be used in native functions to properly pass all
errors up the stack.
Set the long jump base in the Compiler instead of outside of the
compiler. A bunch of errors that used to be propagated through the
sticky_error are now propagated through return values. This includes
all of the DartEntry and DartLibraryCall functions.
In particular, we no longer use the long jump to cross dart frames.
Instead errors are propagated across dart frames using the same
mechanism that we use for unhandled exceptions. I've added assertions
to make sure that we only use the long jump when it is "safe".
Review URL: https://chromiumcodereview.appspot.com//9169102
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@3815 260f80e4-7a28-3924-810f-c04153c831b5
zra@google.com