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dhrystone baremetal!!!

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Factor out --optimization-level and --static to all builds

More conventionally set argv[0] to be the basename of the image.

Fix https://github.com/cirosantilli/linux-kernel-module-cheat/issues/90
This commit is contained in:
Ciro Santilli 六四事件 法轮功
2020-04-02 03:00:02 +00:00
parent b7887ac06b
commit 66473201eb
9 changed files with 136 additions and 100 deletions
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42
build-baremetal
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@@ -28,33 +28,9 @@ Build the baremetal examples with crosstool-NG.
def build(self):
build_dir = self.get_build_dir()
extra_obj_baremetal_bootloader = os.path.join(
self.env['baremetal_build_lib_dir'],
'bootloader{}'.format(self.env['obj_ext'])
)
extra_obj_lkmc_common = os.path.join(
self.env['baremetal_build_lib_dir'],
self.env['common_basename_noext'] + self.env['obj_ext']
)
cc_flags = [
'-I', self.env['root_dir'], LF,
'-O{}'.format(self.env['optimization_level']), LF,
'-nostartfiles', LF,
]
if self.env['arch'] == 'arm':
cc_flags.extend([
'-mhard-float', LF,
# This uses the soft float ABI for calling functions from objets in Newlib which
# our crosstool-NG config compiles with soft floats, while emiting hard float
# from C and allowing us to use it from assembly, e.g. for the VMRS instruction:
# which would otherwise fail "with selected processor does not support XXX in ARM mode"
# Bibliography:
# - https://stackoverflow.com/questions/9753749/arm-compilation-error-vfp-registered-used-by-executable-not-object-file
# - https://stackoverflow.com/questions/41131432/cross-compiling-error-selected-processor-does-not-support-fmrx-r3-fpexc-in/41131782#41131782
# - https://embeddedartistry.com/blog/2017/10/9/r1q7pksku2q3gww9rpqef0dnskphtc
'-mfloat-abi=softfp', LF,
'-mfpu=crypto-neon-fp-armv8', LF,
])
if self.env['emulator'] == 'gem5':
cc_flags.extend([
'-DLKMC_GEM5=1', LF,
@@ -63,7 +39,7 @@ Build the baremetal examples with crosstool-NG.
else:
cc_flags.extend(['-D', 'LKMC_QEMU=1', LF])
cc_flags.extend(['-D', 'LKMC_UART0_ADDR={:#x}'.format(self.env['uart_address']), LF])
cc_flags.extend(self.sh.shlex_split(self.env['ccflags']))
cc_flags.extend(self.env['ccflags'])
bootloader_src = os.path.join(
self.env['baremetal_source_lib_dir'],
'{}{}'.format(
@@ -72,8 +48,8 @@ Build the baremetal examples with crosstool-NG.
)
)
for in_path, out_path in [
(bootloader_src, extra_obj_baremetal_bootloader),
(self.env['common_c'], extra_obj_lkmc_common),
(bootloader_src, self.env['baremetal_extra_obj_bootloader']),
(self.env['common_c'], self.env['baremetal_extra_obj_lkmc_common']),
(
self.env['baremetal_syscalls_src'],
self.env['baremetal_syscalls_obj']
@@ -90,11 +66,7 @@ Build the baremetal examples with crosstool-NG.
extra_deps=[self.env['common_h']],
link=False,
)
cc_flags.extend([
'-Wl,--section-start=.text={:#x}'.format(self.env['entry_address']), LF,
# '-Wl,--section-start=.lkmc_memory={:#x}'.format(self.env['entry_address'] + 0x1000000), LF,
'-T', self.env['baremetal_link_script'], LF,
])
cc_flags.extend(self.env['ldflags'])
with thread_pool.ThreadPool(
self._build_one,
nthreads=self.env['nproc'],
@@ -117,8 +89,8 @@ Build the baremetal examples with crosstool-NG.
self.env['baremetal_syscalls_obj'],
self.env['baremetal_syscalls_asm_obj']
],
'extra_objs_baremetal_bootloader': [extra_obj_baremetal_bootloader],
'extra_objs_lkmc_common': [extra_obj_lkmc_common],
'extra_objs_baremetal_bootloader': [self.env['baremetal_extra_obj_bootloader']],
'extra_objs_lkmc_common': [self.env['baremetal_extra_obj_lkmc_common']],
'in_path': in_path,
'out_path': self.resolve_baremetal_executable(in_path),
})
@@ -127,7 +99,7 @@ Build the baremetal examples with crosstool-NG.
def get_build_dir(self):
return self.env['baremetal_build_dir']
def setup_one(self):
def setup_one_build(self):
self.env['targets'] = self.resolve_targets(
[
self.env['baremetal_source_dir'],