diff options
Diffstat (limited to 'arch/SConscript')
| -rw-r--r-- | arch/SConscript | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/SConscript b/arch/SConscript index 2d8e34b7b..d237b0b1f 100644 --- a/arch/SConscript +++ b/arch/SConscript @@ -31,11 +31,17 @@ import os.path # Import build environment variable from SConstruct. Import('env') +# Right now there are no source files immediately in this directory +sources = [] + +################################################################# # # ISA "switch header" generation. # # Auto-generate arch headers that include the right ISA-specific # header based on the setting of THE_ISA preprocessor variable. +# +################################################################# # List of headers to generate isa_switch_hdrs = Split(''' @@ -72,3 +78,70 @@ switch_hdr_action = Action(gen_switch_hdr, gen_switch_hdr_string, # Instantiate actions for each header for hdr in isa_switch_hdrs: env.Command(hdr, [], switch_hdr_action) + +################################################################# +# +# Include architecture-specific files. +# +################################################################# + +# +# Build a SCons scanner for ISA files +# +import SCons.Scanner + +def ISAScan(): + return SCons.Scanner.Classic("ISAScan", + "$ISASUFFIXES", + "SRCDIR", + '^[ \t]*##[ \t]*include[ \t]*"([^>"]+)"') + +def ISAPath(env, dir, target=None, source=None, a=None): + return (Dir(env['SRCDIR']), Dir('.')) + +iscan = Scanner(function = ISAScan().scan, skeys = [".isa", ".ISA"], + path_function = ISAPath) +env.Append(SCANNERS = iscan) + +# +# Now create a Builder object that uses isa_parser.py to generate C++ +# output from the ISA description (*.isa) files. +# + +# Convert to File node to fix path +isa_parser = File('isa_parser.py') +cpu_models_file = File('#m5/cpu/cpu_models.py') + +# This sucks in the defintions of the CpuModel objects. +execfile(cpu_models_file.srcnode().abspath) + +# Several files are generated from the ISA description. +# We always get the basic decoder and header file. +isa_desc_gen_files = Split('decoder.cc decoder.hh') +# We also get an execute file for each selected CPU model. +isa_desc_gen_files += [CpuModel.dict[cpu].filename + for cpu in env['CPU_MODELS']] + +# The emitter patches up the sources & targets to include the +# autogenerated files as targets and isa parser itself as a source. +def isa_desc_emitter(target, source, env): + return (isa_desc_gen_files, [isa_parser, cpu_models_file] + source) + +# Pieces are in place, so create the builder. +isa_desc_builder = Builder(action='$SOURCES $TARGET.dir $CPU_MODELS', + source_scanner = iscan, + emitter = isa_desc_emitter) + +env.Append(BUILDERS = { 'ISADesc' : isa_desc_builder }) + +# +# Now include other ISA-specific sources from the ISA subdirectories. +# + +isa = env['TARGET_ISA'] # someday this may be a list of ISAs + +# Let the target architecture define what additional sources it needs +sources += SConscript(os.path.join(isa, 'SConscript'), + exports = 'env', duplicate = False) + +Return('sources') |