1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
import os
import subprocess
def config_enabled(name):
try:
with open('rtconfig.h', 'r') as config:
return '#define {}'.format(name) in config.read()
except OSError:
return False
def compiler_accepts(compiler, options):
try:
result = subprocess.run(
[compiler] + options + ['-x', 'c', '-c', '-o', os.devnull, '-'],
input=b'',
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL,
check=False,
)
except OSError:
return False
return result.returncode == 0
# toolchains options
ARCH ='risc-v'
CPU =''
CROSS_TOOL ='gcc'
RISCV_ABI = os.getenv('RTT_RISCV_ABI')
RTT_ROOT = os.getenv('RTT_ROOT') or os.path.join(os.getcwd(), '..', '..')
if os.getenv('RTT_CC'):
CROSS_TOOL = os.getenv('RTT_CC')
if CROSS_TOOL == 'gcc':
PLATFORM = 'gcc'
EXEC_PATH = os.getenv('RTT_EXEC_PATH') or '/usr/bin'
else:
print('Please make sure your toolchains is GNU GCC!')
exit(0)
BUILD = 'debug'
if PLATFORM == 'gcc':
# toolchains
PREFIX = os.getenv('RTT_CC_PREFIX') or 'riscv64-unknown-elf-'
CC = PREFIX + 'gcc'
CXX = PREFIX + 'g++'
CPP = PREFIX + 'cpp'
AS = PREFIX + 'gcc'
AR = PREFIX + 'ar'
LINK = PREFIX + 'gcc'
TARGET_EXT = 'elf'
SIZE = PREFIX + 'size'
OBJDUMP = PREFIX + 'objdump'
OBJCPY = PREFIX + 'objcopy'
xlen = '64' if config_enabled('ARCH_RISCV64') else '32'
abi_base = 'lp64' if xlen == '64' else 'ilp32'
extensions = 'imac'
if config_enabled('ARCH_RISCV_FPU_D'):
extensions = 'imafdc'
elif config_enabled('ARCH_RISCV_FPU_S'):
extensions = 'imafc'
abi = RISCV_ABI
if not abi and (xlen == '32' or config_enabled('RT_USING_SMART')):
abi = abi_base
march_base = 'rv{}{}'.format(xlen, extensions)
march_modern = '{}_zicsr_zifencei'.format(march_base)
compiler = os.path.join(EXEC_PATH, CC)
if not os.path.isfile(compiler):
compiler = CC
# Preserve the toolchain ABI unless it requires unavailable ISA extensions.
if not abi and not any(compiler_accepts(compiler, ['-march=' + candidate])
for candidate in (march_modern, march_base)):
abi = abi_base
abi_option = ['-mabi={}'.format(abi)] if abi else []
march = march_modern if compiler_accepts(
compiler, ['-march={}'.format(march_modern)] + abi_option) else march_base
DEVICE = ' -mcmodel=medany -march={} '.format(march)
if abi:
DEVICE += ' -mabi={} '.format(abi)
CPPFLAGS= ' -nostdinc -undef -E -P -x assembler-with-cpp'
CFLAGS = DEVICE + '-ffreestanding -flax-vector-conversions -Wno-cpp -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -fdiagnostics-color=always'
AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -D__ASSEMBLY__ '
LFLAGS = DEVICE + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,_start -T link.lds' + ' -lsupc++ -lgcc -static'
CPATH = ''
LPATH = ''
if BUILD == 'debug':
CFLAGS += ' -O0 -ggdb -fvar-tracking '
AFLAGS += ' -ggdb'
else:
CFLAGS += ' -O2 -Os'
CXXFLAGS = CFLAGS
DUMP_ACTION = OBJDUMP + ' -D -S $TARGET > rtthread.asm\n'
POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'
|
