AuroraMiddleware/v8
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ARM: Add GYP variables to control V8 code generation

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Added the GYP variables:
  v8_can_use_unaligned_accesses
  v8_use_arm_eabi_hardfloat

Refer to the comments in v8.gyp on their uses.

R=karlklose@chromium.org

BUG=none
TEST=none

Review URL: http://codereview.chromium.org//6910025

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7769 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
sgjesse@chromium.org 2011-05-04 06:18:49 +00:00
parent 5a9fa7a8c6
commit 34174f3899
2 changed files with 42 additions and 5 deletions
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2
SConstruct
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@ -162,7 +162,7 @@ LIBRARY_FLAGS = {
}
},
'armeabi:softfp' : {
'CPPDEFINES' : ['USE_EABI_HARDFLOAT=0'],
'CPPDEFINES' : ['USE_EABI_HARDFLOAT=0', 'CAN_USE_VFP_INSTRUCTIONS'],
'simulator:none': {
'CCFLAGS': ['-mfloat-abi=softfp'],
}

45
tools/gyp/v8.gyp
View File

@ -32,7 +32,28 @@
'gcc_version%': 'unknown',
'v8_compress_startup_data%': 'false',
'v8_target_arch%': '<(target_arch)',
# Setting 'v8_can_use_unaligned_accesses' to 'true' will allow the code
# generated by V8 to do unaligned memory access, and setting it to 'false'
# will ensure that the generated code will always do aligned memory
# accesses. The default value of 'default' will try to determine the correct
# setting. Note that for Intel architectures (ia32 and x64) unaligned memory
# access is allowed for all CPUs.
'v8_can_use_unaligned_accesses%': 'default',
# Setting 'v8_can_use_vfp_instructions' to 'true' will enable use of ARM VFP
# instructions in the V8 generated code. VFP instructions will be enabled
# both for the snapshot and for the ARM target. Leaving the default value
# of 'false' will avoid VFP instructions in the snapshot and use CPU feature
# probing when running on the target.
'v8_can_use_vfp_instructions%': 'false',
# Setting v8_use_arm_eabi_hardfloat to true will turn on V8 support for ARM
# EABI calling convention where double arguments are passed in VFP
# registers. Note that the GCC flag '-mfloat-abi=hard' should be used as
# well when compiling for the ARM target.
'v8_use_arm_eabi_hardfloat%': 'false',
'v8_use_snapshot%': 'true',
'v8_use_liveobjectlist%': 'false',
},
@ -58,11 +79,27 @@
'V8_TARGET_ARCH_ARM',
],
'conditions': [
[ 'v8_can_use_unaligned_accesses=="true"', {
'defines': [
'CAN_USE_UNALIGNED_ACCESSES=1',
],
}],
[ 'v8_can_use_unaligned_accesses=="false"', {
'defines': [
'CAN_USE_UNALIGNED_ACCESSES=0',
],
}],
[ 'v8_can_use_vfp_instructions=="true"', {
'defines': [
'CAN_USE_VFP_INSTRUCTIONS',
],
}],
[ 'v8_use_arm_eabi_hardfloat=="true"', {
'defines': [
'USE_EABI_HARDFLOAT=1',
'CAN_USE_VFP_INSTRUCTIONS',
],
}],
],
}],
['v8_target_arch=="ia32"', {
@ -781,10 +818,10 @@
'../../src/regexp.js',
'../../src/macros.py',
],
'experimental_library_files': [
'../../src/proxy.js',
'experimental_library_files': [
'../../src/proxy.js',
'../../src/macros.py',
],
],
},
'actions': [
{
@ -804,7 +841,7 @@
'<@(library_files)'
],
},
{
{
'action_name': 'js2c_experimental',
'inputs': [
'../../tools/js2c.py',