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63 lines
2.0 KiB
63 lines
2.0 KiB
5 months ago
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import os
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import sys
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import subprocess
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arguments = sys.argv[2]
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vdso_usr = arguments
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vdso_path = os.path.join(vdso_usr, '..', '..', '..')
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EXEC_PATH = os.getenv('RTT_EXEC_PATH') or '/usr/bin'
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PREFIX = os.getenv('RTT_CC_PREFIX') or 'riscv64-none-elf-'
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def get_riscv64_default_arch_abi(gcc_bin):
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try:
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result = subprocess.check_output(
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[gcc_bin, '-Q', '--help=target'],
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universal_newlines=True
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)
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arch = None
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abi = None
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for line in result.splitlines():
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if '-march=' in line:
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arch = line.strip().split()[1]
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arch = arch.split('_')[0] # Get the base architecture, e.g., rv64imafdc
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if '-mabi=' in line and 'option' not in line:
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abi = line.strip().split()[1]
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return arch, abi
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except Exception as e:
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print("Error getting arch/abi:", e)
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return None, None
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# get the gcc path
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CC_BIN = PREFIX + 'gcc'
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arch, abi = get_riscv64_default_arch_abi(CC_BIN)
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if arch and abi:
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DEVICE = f' -march={arch} -mabi={abi} '
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else:
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DEVICE = ' -march=rv64imafdc -mabi=lp64' # fallback
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CC = PREFIX + 'gcc'
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CPP = PREFIX + 'cpp'
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AS = PREFIX + 'gcc'
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AR = PREFIX + 'ar'
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LINK = PREFIX + 'gcc'
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AFLAGS = ' -x assembler-with-cpp'
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CFLAGS = DEVICE + ' -Wall -Wno-cpp -std=gnu99 -fdiagnostics-color=always -fPIC -O2'
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LFLAGS = DEVICE + ' -Bsymbolic -Wl,--gc-sections -T {path}/vdso.lds'.format(path=vdso_usr)
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CFLAGS += " -I . -I {vdso_path} ".format(vdso_path=vdso_path)
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src = Glob('*.c')
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env = Environment(tools=['gcc', 'link'],
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AS = AS, ASFLAGS = AFLAGS,
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CC = CC, CFLAGS = CFLAGS,
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CPP = CPP, AR = AR,
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LINK = LINK, LINKFLAGS = LFLAGS)
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env.PrependENVPath('PATH', EXEC_PATH)
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target = os.path.join(vdso_path, 'user', 'build', 'libvdso.so')
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shared_lib = env.SharedLibrary(target=target, source=src)
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Clean(shared_lib, '{vdso_usr}/vdso.lds'.format(vdso_usr=vdso_usr))
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Clean(shared_lib, '.sconsign.dblite')
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env.Default(shared_lib)
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