1 ifeq ($(subdir),signal)
2 #sysdep_routines += sigsuspend
6 sysdep_routines += cachectl cacheflush sysmips _test_and_set
8 sysdep_headers += sys/cachectl.h sys/sysmips.h sys/tas.h
12 # A callable macro that expands to a shell command. Preprocess file $(1)
13 # using ABI option $(2) and see which macros it defines. Print FOO for each
14 # macro of the form __NR$(3)_FOO, filtering out ABI-specific __NR macros
15 # that have a prefix other than $(3).
16 mips_list_syscalls = $(filter-out -m%,$(CC)) -E -x c $(+includes) \
17 $(sysincludes) -D_LIBC -dM -mabi=$(2) $(1) | \
18 sed -n 's@^\#define __NR$(3)_\([^ ]*\) .*@\1@p' | \
19 sed -e '/^[ON]32_/d' -e '/^N64_/d' -e '/^64_/d' | \
22 # Generate a list of SYS_* macros from the linux __NR macros.
24 # Before version 2.6, linux had separate 32-bit and 64-bit MIPS ports,
25 # each with its own set of headers. The ports were merged for 2.6 and
26 # this merged port defines the syscalls in a slightly different way.
27 # There are therefore three sets of headers that we need to consider:
29 # (1) Headers from the separate 32-bit MIPS port. They just define
30 # a single list of __NR macros.
32 # (2) Headers from the separate 64-bit MIPS port. They unconditionally
33 # define syscalls for all three ABIs, with o32 syscalls prefixed
34 # by __NR_O32, n32 syscalls prefixed by __NR_N32 and n64 syscalls
35 # prefixed by plain __NR.
37 # (3) Headers from the combined port. They use the _MIPS_SIM macro to
38 # define the right set of syscalls for the current ABI. The syscalls
39 # themselves have no special ABI prefix, but the headers also define:
41 # __NR_O32_Linux{,_syscalls}
42 # __NR_N32_Linux{,_syscalls}
43 # __NR_64_Linux{,_syscalls}
45 # In case (1) we just want a simple list of SYS_* macros. In cases (2)
46 # and (3) we want a file that will work for all three ABIs, regardless
47 # of which ABI we are currently using. We also want the file to work
48 # if the user later moves from (2) to (3). Thus the file we create
49 # for (2) and (3) has the form:
51 # #if _MIPS_SIM == _ABIN32
52 # # ifdef __NR_N32_open
53 # # define SYS_n32syscall1 __NR_N32_n32syscall1
56 # # define SYS_n32syscall1 __NR_n32syscall1
59 # #elif _MIPS_SIM == _ABI64
60 # # define SYS_n64syscall1 __NR_n64syscall1
63 # # ifdef __NR_O32_open
64 # # define SYS_o32syscall1 __NR_O32_o32syscall1
67 # # define SYS_o32syscall1 __NR_o32syscall1
72 # Here, __NR_N32_open and __NR_O32_open are used to detect case (2)
73 # over case (3). The n64 SYS_* macros can always use the normal
75 $(objpfx)syscall-%.h $(objpfx)syscall-%.d: ../sysdeps/unix/sysv/linux/mips/sys/syscall.h
76 $(make-target-directory)
77 $(CC) -E -x c $(+includes) $(sysincludes) -D_LIBC $< -MD -MP \
78 -MF $(@:.h=.d)-t -MT '$(@:.d=.h) $(@:.h=.d)' > /dev/null
80 echo '/* Generated at libc build time from kernel syscall list. */';\
82 echo '#ifndef _SYSCALL_H'; \
83 echo '# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."'; \
86 echo '#include <sgidefs.h>'; \
87 rm -f $(@:.d=.h).new32 $(@:.d=.h).newn32 $(@:.d=.h).new64; \
88 $(call mips_list_syscalls,$<,n32,_N32) > $(@:.d=.h).newn32; \
89 if test -s $(@:.d=.h).newn32; then \
90 if grep open $(@:.d=.h).newn32 > /dev/null; then \
91 $(call mips_list_syscalls,$<,32,_O32) > $(@:.d=.h).new32; \
92 $(call mips_list_syscalls,$<,64,) > $(@:.d=.h).new64; \
94 $(call mips_list_syscalls,$<,32,) > $(@:.d=.h).new32; \
95 $(call mips_list_syscalls,$<,n32,) > $(@:.d=.h).newn32; \
96 $(call mips_list_syscalls,$<,64,) > $(@:.d=.h).new64; \
98 echo '#if _MIPS_SIM == _ABIN32'; \
99 echo '# ifdef __NR_N32_open'; \
100 sed 's@\(.*\)@# define SYS_\1 __NR_N32_\1@' < $(@:.d=.h).newn32; \
102 sed 's@\(.*\)@# define SYS_\1 __NR_\1@' < $(@:.d=.h).newn32; \
104 echo '#elif _MIPS_SIM == _ABI64'; \
105 sed 's@\(.*\)@# define SYS_\1 __NR_\1@' < $(@:.d=.h).new64; \
107 echo '# ifdef __NR_O32_open'; \
108 sed 's@\(.*\)@# define SYS_\1 __NR_O32_\1@' < $(@:.d=.h).new32; \
110 sed 's@\(.*\)@# define SYS_\1 __NR_\1@' < $(@:.d=.h).new32; \
114 $(CC) -E -x c $(+includes) $(sysincludes) -D_LIBC -dM $< | \
115 sed -n 's@^\#define __NR_\([^ ]*\) .*@\#define SYS_\1 __NR_\1@p' | \
118 rm -f $(@:.d=.h).new32 $(@:.d=.h).newn32 $(@:.d=.h).new64; \
120 mv -f $(@:.d=.h).new $(@:.d=.h)
122 sed $(sed-remove-objpfx) $(@:.h=.d)-t > $(@:.h=.d)-t2
124 mv -f $(@:.h=.d)-t2 $(@:.h=.d)
126 mv -f $(@:.h=.d)-t $(@:.h=.d)