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This patch removes the component_entry_point library, which used to proved a hook for the libc to intercept the call of the 'Component::construct' function. The mechansim has several shortcomings (see the discussion in the associated issue) and was complex. So we eventually discarded the approach in favor of the explicit handling of the startup. A regular Genode component provides a 'Component::construct' function, which is determined by the dynamic linker via a symbol lookup. For the time being, the dynamic linker falls back to looking up a 'main' function if no 'Component::construct' function could be found. The libc provides an implementation of 'Component::construct', which sets up the libc's task handling and finally call the function 'Libc::Component::construct' from the context of the appllication task. This function is expected to be provided by the libc-using application. Consequently, Genode components that use the libc have to implement the 'Libc::Component::construct' function. The new 'posix' library provides an implementation of 'Libc::Component::construct' that calls a main function. Hence, POSIX programs that merely use the POSIX API merely have to add 'posix' to the 'LIBS' declaration in their 'target.mk' file. Their execution starts at 'main'. Issue #2199
77 lines
1.4 KiB
Tcl
77 lines
1.4 KiB
Tcl
#
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# \brief Test for using the libc_vfs plugin
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# \author Norman Feske
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# \date 2014-04-10
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#
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#
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# Build
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#
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build { core init server/ram_fs test/libc_vfs }
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create_boot_directory
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#
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# Generate config
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#
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set config {
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<config>
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<parent-provides>
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<service name="ROM"/>
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<service name="RAM"/>
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<service name="PD"/>
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<service name="RM"/>
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<service name="CPU"/>
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<service name="LOG"/>
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</parent-provides>
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<default-route>
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<any-service> <parent/> <any-child/> </any-service>
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</default-route>
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<start name="ram_fs">
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<resource name="RAM" quantum="12M"/>
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<provides> <service name="File_system"/> </provides>
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<config> <default-policy root="/" writeable="yes"/> </config>
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</start>
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<start name="test-libc_vfs">
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<resource name="RAM" quantum="2M"/>
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<config>
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<iterations value="1"/>}
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append_if [have_include "power_on/qemu"] config {
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<write-read size="1M" buffer_size="8K"/>}
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append config {
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<libc stdout="/dev/log" cwd="/tmp" >
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<vfs>
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<dir name="tmp" >
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<fs/>
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</dir>
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<dir name="dev"> <log/> </dir>
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</vfs>
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</libc>
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</config>
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</start>
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</config>
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}
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install_config $config
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#
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# Boot modules
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#
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build_boot_image {
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core init
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ld.lib.so libc.lib.so libm.lib.so
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ram_fs test-libc_vfs
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}
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#
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# Execute test case
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#
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append qemu_args " -m 128 -nographic "
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run_genode_until {.*child "test-libc_vfs" exited with exit value 0.*} 60
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# vi: set ft=tcl :
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