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Factor common userland and baremetal C functions

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This allows add.c to run unmodified on both!

For that to work, use int main on baremetal, and pass the return value to
the final exit.
This commit is contained in:
Ciro Santilli 六四事件 法轮功
2018-11-15 00:00:00 +00:00
parent ecc2a21b57
commit 26b890f42f
26 changed files with 87 additions and 52 deletions
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54
build-baremetal
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@@ -9,9 +9,16 @@ class BaremetalComponent(common.Component):
common.assert_crosstool_ng_supports_arch(args.arch)
build_dir = self.get_build_dir(args)
bootloader_obj = os.path.join(common.baremetal_build_lib_dir, 'bootloader{}'.format(common.obj_ext))
common_obj = os.path.join(common.baremetal_build_lib_dir, 'common{}'.format(common.obj_ext))
common_basename_noext = 'common'
common_src = os.path.join(common.root_dir, common_basename_noext + common.c_ext)
common_obj = os.path.join(common.baremetal_build_lib_dir, common_basename_noext + common.obj_ext)
syscalls_basename_noext = 'syscalls'
syscalls_src = os.path.join(common.baremetal_src_lib_dir, syscalls_basename_noext + common.c_ext)
syscalls_obj = os.path.join(common.baremetal_build_lib_dir, syscalls_basename_noext + common.obj_ext)
common_objs = [common_obj, syscalls_obj]
cflags = [
'-I', common.baremetal_src_lib_dir, common.Newline,
'-I', common.root_dir, common.Newline,
'-O0', common.Newline,
'-ggdb3', common.Newline,
'-mcpu={}'.format(common.mcpu), common.Newline,
@@ -46,23 +53,27 @@ class BaremetalComponent(common.Component):
os.path.join(common.baremetal_src_lib_dir, '{}{}'.format(args.arch, common.asm_ext)), common.Newline,
]
)
common.run_cmd(
[gcc, common.Newline] +
cflags +
[
'-c', common.Newline,
'-D', 'UART0_ADDR={:#x}'.format(uart_address), common.Newline,
'-o', common_obj, common.Newline,
os.path.join(common.baremetal_src_lib_dir, 'common' + common.c_ext), common.Newline,
]
)
for src, obj in [
(common_src, common_obj),
(syscalls_src, syscalls_obj),
]:
common.run_cmd(
[gcc, common.Newline] +
cflags +
[
'-c', common.Newline,
'-D', 'UART0_ADDR={:#x}'.format(uart_address), common.Newline,
'-o', obj, common.Newline,
src, common.Newline,
]
)
self._build_dir(
'',
gcc=gcc,
cflags=cflags,
entry_address=entry_address,
bootloader_obj=bootloader_obj,
common_obj=common_obj,
common_objs=common_objs,
)
self._build_dir(
'interactive',
@@ -70,7 +81,7 @@ class BaremetalComponent(common.Component):
cflags=cflags,
entry_address=entry_address,
bootloader_obj=bootloader_obj,
common_obj=common_obj,
common_objs=common_objs,
)
arch_dir = os.path.join('arch', args.arch)
if os.path.isdir(os.path.join(common.baremetal_src_dir, arch_dir)):
@@ -80,7 +91,7 @@ class BaremetalComponent(common.Component):
cflags=cflags,
entry_address=entry_address,
bootloader_obj=bootloader_obj,
common_obj=common_obj,
common_objs=common_objs,
)
arch_dir = os.path.join('arch', args.arch, 'no_bootloader')
if os.path.isdir(os.path.join(common.baremetal_src_dir, arch_dir)):
@@ -90,7 +101,7 @@ class BaremetalComponent(common.Component):
cflags=cflags,
entry_address=entry_address,
bootloader_obj=bootloader_obj,
common_obj=common_obj,
common_objs=common_objs,
bootloader=False,
)
@@ -107,7 +118,16 @@ Build the baremetal examples with crosstool-NG.
def get_default_args(self):
return {'baremetal': 'all'}
def _build_dir(self, subpath, gcc, cflags, entry_address, bootloader_obj, common_obj, bootloader=True):
def _build_dir(
self,
subpath,
gcc,
cflags,
entry_address,
bootloader_obj,
common_objs,
bootloader=True
):
"""
Build all .c and .S files in a given subpath of the baremetal source
directory non recursively.
@@ -144,8 +164,8 @@ Build the baremetal examples with crosstool-NG.
'-T', os.path.join(common.baremetal_src_dir, 'link.ld'), common.Newline,
] +
bootloader_cmd +
common.add_newlines(common_objs) +
[
common_obj, common.Newline,
main_obj, common.Newline,
]
)