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Re: [PATCH] libgloss/arm: Add linux syscall interface.
- From: "Shaun Jackman" <sjackman at gmail dot com>
- To: newlib at sources dot redhat dot com
- Date: Fri, 5 May 2006 15:58:05 -0600
- Subject: Re: [PATCH] libgloss/arm: Add linux syscall interface.
- References: <7f45d9390603281540q4e1ad70dj504f0c6f4466e61c@mail.gmail.com>
- Reply-to: "Shaun Jackman" <sjackman at gmail dot com>
On 3/28/06, Shaun Jackman <sjackman@gmail.com> wrote:
This patch adds a Linux syscall interface to libgloss/arm. It's
written in assembler, for the most part, to make the interface as
small and as thin as possible. For example in Thumb mode, each
additional system call only takes an additional four bytes. This patch
only implements the subset of Linux system calls that I use, but the
intention is to add system calls fairly liberally as they're requested
by users.
Cheers,
Shaun
This patch is a minor update to my previous patch of 2006-03-28. Ping!
Cheers,
Shaun
2006-05-05 Shaun Jackman <sjackman@gmail.com>
* arm/Makefile.in: Add Linux syscall interface.
* arm/linux-crt0.S: New file.
* arm/linux-syscall.h: New file.
* arm/linux-syscalls0.S: New file.
* arm/linux-syscalls1.c: New file.
Index: arm/Makefile.in
===================================================================
RCS file: /cvs/src/src/libgloss/arm/Makefile.in,v
retrieving revision 1.6
diff -u -r1.6 Makefile.in
--- arm/Makefile.in 13 Apr 2005 00:01:40 -0000 1.6
+++ arm/Makefile.in 5 May 2006 21:54:34 -0000
@@ -53,6 +53,12 @@
@BUILD_CRT0_FALSE@CRT0 =
@BUILD_CRT0_FALSE@CRT0_INSTALL =
+LINUX_CRT0 = linux-crt0.o
+LINUX_BSP = libgloss-linux.a
+LINUX_OBJS = linux-syscalls0.o linux-syscalls1.o
+LINUX_SCRIPTS = linux.specs
+LINUX_INSTALL = install-linux
+
REDBOOT_CRT0 = redboot-crt0.o
REDBOOT_OBJS = redboot-syscalls.o
REDBOOT_SCRIPTS = redboot.ld redboot.specs
@@ -87,7 +93,7 @@
# build a test program for each target board. Just trying to get
# it to link is a good test, so we ignore all the errors for now.
#
-all: ${CRT0} ${REDBOOT_CRT0} ${REDBOOT_OBJS} ${RDPMON_CRT0}
${RDPMON_BSP} ${RDIMON_CRT0} ${RDIMON_BSP}
+all: ${CRT0} ${LINUX_CRT0} ${LINUX_BSP} ${REDBOOT_CRT0}
${REDBOOT_OBJS} ${RDPMON_CRT0} ${RDPMON_BSP} ${RDIMON_CRT0}
${RDIMON_BSP}
#
# here's where we build the test programs for each target
@@ -115,6 +121,10 @@
rdimon-libcfunc.o: libcfunc.c
$(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -DARM_RDI_MONITOR -o $@ -c $<
+$(LINUX_BSP): $(LINUX_OBJS)
+ ${AR} ${ARFLAGS} $@ $^
+ ${RANLIB} $@
+
$(RDPMON_BSP): $(RDPMON_OBJS)
${AR} ${ARFLAGS} $@ $^
${RANLIB} $@
@@ -130,11 +140,15 @@
rm -f Makefile config.status *~
.PHONY: install info install-info clean-info
-install: ${CRT0_INSTALL} ${REDBOOT_INSTALL} ${RDPMON_INSTALL}
${RDIMON_INSTALL} ${IQ80310_INSTALL} ${PID_INSTALL}
+install: ${CRT0_INSTALL} ${LINUX_INSTALL} ${REDBOOT_INSTALL}
${RDPMON_INSTALL} ${RDIMON_INSTALL} ${IQ80310_INSTALL} ${PID_INSTALL}
install-crt0:
${INSTALL_DATA} ${CRT0} $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/$$x
+install-linux:
+ set -e; for x in ${LINUX_CRT0} ${LINUX_BSP}; do ${INSTALL_DATA} $$x
$(DESTDIR)${tooldir}/lib${MULTISUBDIR}/$$x; done
+ set -e; for x in ${LINUX_SCRIPTS}; do ${INSTALL_DATA}
${srcdir}/${objtype}$$x $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/$$x;
done
+
install-redboot:
set -e; for x in ${REDBOOT_CRT0} ${REDBOOT_OBJS}; do ${INSTALL_DATA}
$$x $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/$$x; done
set -e; for x in ${REDBOOT_SCRIPTS}; do ${INSTALL_DATA}
${srcdir}/${objtype}$$x $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/$$x;
done
--- /dev/null 2006-05-04 16:06:26.438914112 -0600
+++ arm/linux-crt0.S 2006-03-28 16:32:28.000000000 -0700
@@ -0,0 +1,46 @@
+/** Linux startup code for the ARM processor.
+ * Written by Shaun Jackman <sjackman@gmail.com>.
+ * Copyright 2006 Pathway Connectivity
+ *
+ * Permission to use, copy, modify, and distribute this software
+ * is freely granted, provided that this notice is preserved.
+ */
+
+.global _start
+.type _start, %function
+_start:
+#if __thumb__
+ /* Switch to Thumb mode. */
+ adr r0, _start_thumb+1
+ bx r0
+.size _start, .-_start
+.global _start_thumb
+.thumb_func
+_start_thumb:
+#endif
+
+#if 0
+ /* Clear the BSS. This task is normally handled by the kernel. */
+ ldr r0, =__bss_start
+ mov r1, #0
+ ldr r2, =_end
+ sub r2, r2, r0
+ bl memset
+#endif
+
+ pop {r0} @ argc
+ mov r1, sp @ argv
+ lsl r2, r0, #2
+ add r2, r1
+ add r2, #4 @ envp
+ ldr r3, =environ
+ str r2, [r3]
+ bl main
+ bl exit
+ b .
+
+#if __thumb__
+.size _start_thumb, .-_start_thumb
+#else
+.size _start, .-_start
+#endif
--- /dev/null 2006-05-04 16:06:26.438914112 -0600
+++ arm/linux-syscall.h 2006-03-27 15:19:55.000000000 -0700
@@ -0,0 +1,318 @@
+/** Linux system call numbers for the ARM processor.
+ * Written by Shaun Jackman <sjackman@gmail.com>
+ * Copyright 2006 Pathway Connectivity
+ *
+ * Permission to use, copy, modify, and distribute this software
+ * is freely granted, provided that this notice is preserved.
+ */
+
+#ifndef _LIBGLOSS_ARM_LINUX_UNISTD_H
+#define _LIBGLOSS_ARM_LINUX_UNISTD_H
+
+#if __thumb__
+# define SYS_BASE 0
+#else
+# define SYS_BASE 0x900000
+#endif
+
+#define SYS_restart_syscall (SYS_BASE+ 0)
+#define SYS_exit (SYS_BASE+ 1)
+#define SYS_fork (SYS_BASE+ 2)
+#define SYS_read (SYS_BASE+ 3)
+#define SYS_write (SYS_BASE+ 4)
+#define SYS_open (SYS_BASE+ 5)
+#define SYS_close (SYS_BASE+ 6)
+/* SYS_waitpid was 7 */
+#define SYS_creat (SYS_BASE+ 8)
+#define SYS_link (SYS_BASE+ 9)
+#define SYS_unlink (SYS_BASE+ 10)
+#define SYS_execve (SYS_BASE+ 11)
+#define SYS_chdir (SYS_BASE+ 12)
+#define SYS_time (SYS_BASE+ 13)
+#define SYS_mknod (SYS_BASE+ 14)
+#define SYS_chmod (SYS_BASE+ 15)
+#define SYS_lchown (SYS_BASE+ 16)
+/* SYS_break was 17 */
+/* SYS_stat was 18 */
+#define SYS_lseek (SYS_BASE+ 19)
+#define SYS_getpid (SYS_BASE+ 20)
+#define SYS_mount (SYS_BASE+ 21)
+#define SYS_umount (SYS_BASE+ 22)
+#define SYS_setuid (SYS_BASE+ 23)
+#define SYS_getuid (SYS_BASE+ 24)
+#define SYS_stime (SYS_BASE+ 25)
+#define SYS_ptrace (SYS_BASE+ 26)
+#define SYS_alarm (SYS_BASE+ 27)
+/* SYS_fstat was 28 */
+#define SYS_pause (SYS_BASE+ 29)
+#define SYS_utime (SYS_BASE+ 30)
+/* SYS_stty was 31 */
+/* SYS_gtty was 32 */
+#define SYS_access (SYS_BASE+ 33)
+#define SYS_nice (SYS_BASE+ 34)
+/* SYS_ftime was 35 */
+#define SYS_sync (SYS_BASE+ 36)
+#define SYS_kill (SYS_BASE+ 37)
+#define SYS_rename (SYS_BASE+ 38)
+#define SYS_mkdir (SYS_BASE+ 39)
+#define SYS_rmdir (SYS_BASE+ 40)
+#define SYS_dup (SYS_BASE+ 41)
+#define SYS_pipe (SYS_BASE+ 42)
+#define SYS_times (SYS_BASE+ 43)
+/* SYS_prof was 44 */
+#define SYS_brk (SYS_BASE+ 45)
+#define SYS_setgid (SYS_BASE+ 46)
+#define SYS_getgid (SYS_BASE+ 47)
+/* SYS_signal was 48 */
+#define SYS_geteuid (SYS_BASE+ 49)
+#define SYS_getegid (SYS_BASE+ 50)
+#define SYS_acct (SYS_BASE+ 51)
+#define SYS_umount2 (SYS_BASE+ 52)
+/* SYS_lock was 53 */
+#define SYS_ioctl (SYS_BASE+ 54)
+#define SYS_fcntl (SYS_BASE+ 55)
+/* SYS_mpx was 56 */
+#define SYS_setpgid (SYS_BASE+ 57)
+/* SYS_ulimit was 58 */
+/* SYS_olduname was 59 */
+#define SYS_umask (SYS_BASE+ 60)
+#define SYS_chroot (SYS_BASE+ 61)
+#define SYS_ustat (SYS_BASE+ 62)
+#define SYS_dup2 (SYS_BASE+ 63)
+#define SYS_getppid (SYS_BASE+ 64)
+#define SYS_getpgrp (SYS_BASE+ 65)
+#define SYS_setsid (SYS_BASE+ 66)
+#define SYS_sigaction (SYS_BASE+ 67)
+/* SYS_sgetmask was 68 */
+/* SYS_ssetmask was 69 */
+#define SYS_setreuid (SYS_BASE+ 70)
+#define SYS_setregid (SYS_BASE+ 71)
+#define SYS_sigsuspend (SYS_BASE+ 72)
+#define SYS_sigpending (SYS_BASE+ 73)
+#define SYS_sethostname (SYS_BASE+ 74)
+#define SYS_setrlimit (SYS_BASE+ 75)
+#define SYS_getrlimit (SYS_BASE+ 76)
+#define SYS_getrusage (SYS_BASE+ 77)
+#define SYS_gettimeofday (SYS_BASE+ 78)
+#define SYS_settimeofday (SYS_BASE+ 79)
+#define SYS_getgroups (SYS_BASE+ 80)
+#define SYS_setgroups (SYS_BASE+ 81)
+#define SYS_select (SYS_BASE+ 82)
+#define SYS_symlink (SYS_BASE+ 83)
+/* SYS_lstat was 84 */
+#define SYS_readlink (SYS_BASE+ 85)
+#define SYS_uselib (SYS_BASE+ 86)
+#define SYS_swapon (SYS_BASE+ 87)
+#define SYS_reboot (SYS_BASE+ 88)
+#define SYS_readdir (SYS_BASE+ 89)
+#define SYS_mmap (SYS_BASE+ 90)
+#define SYS_munmap (SYS_BASE+ 91)
+#define SYS_truncate (SYS_BASE+ 92)
+#define SYS_ftruncate (SYS_BASE+ 93)
+#define SYS_fchmod (SYS_BASE+ 94)
+#define SYS_fchown (SYS_BASE+ 95)
+#define SYS_getpriority (SYS_BASE+ 96)
+#define SYS_setpriority (SYS_BASE+ 97)
+/* SYS_profil was 98 */
+#define SYS_statfs (SYS_BASE+ 99)
+#define SYS_fstatfs (SYS_BASE+100)
+/* SYS_ioperm was 101 */
+#define SYS_socketcall (SYS_BASE+102)
+#define SYS_syslog (SYS_BASE+103)
+#define SYS_setitimer (SYS_BASE+104)
+#define SYS_getitimer (SYS_BASE+105)
+#define SYS_stat (SYS_BASE+106)
+#define SYS_lstat (SYS_BASE+107)
+#define SYS_fstat (SYS_BASE+108)
+/* SYS_uname was 109 */
+/* SYS_iopl was 110 */
+#define SYS_vhangup (SYS_BASE+111)
+/* SYS_idle was 112 */
+#define SYS_syscall (SYS_BASE+113)
+#define SYS_wait4 (SYS_BASE+114)
+#define SYS_swapoff (SYS_BASE+115)
+#define SYS_sysinfo (SYS_BASE+116)
+#define SYS_ipc (SYS_BASE+117)
+#define SYS_fsync (SYS_BASE+118)
+#define SYS_sigreturn (SYS_BASE+119)
+#define SYS_clone (SYS_BASE+120)
+#define SYS_setdomainname (SYS_BASE+121)
+#define SYS_uname (SYS_BASE+122)
+/* SYS_modify_ldt was 123 */
+#define SYS_adjtimex (SYS_BASE+124)
+#define SYS_mprotect (SYS_BASE+125)
+#define SYS_sigprocmask (SYS_BASE+126)
+/* SYS_create_module was 127 */
+#define SYS_init_module (SYS_BASE+128)
+#define SYS_delete_module (SYS_BASE+129)
+/* SYS_get_kernel_syms was 130 */
+#define SYS_quotactl (SYS_BASE+131)
+#define SYS_getpgid (SYS_BASE+132)
+#define SYS_fchdir (SYS_BASE+133)
+#define SYS_bdflush (SYS_BASE+134)
+#define SYS_sysfs (SYS_BASE+135)
+#define SYS_personality (SYS_BASE+136)
+/* SYS_afs_syscall was 137 */
+#define SYS_setfsuid (SYS_BASE+138)
+#define SYS_setfsgid (SYS_BASE+139)
+#define SYS__llseek (SYS_BASE+140)
+#define SYS_getdents (SYS_BASE+141)
+#define SYS__newselect (SYS_BASE+142)
+#define SYS_flock (SYS_BASE+143)
+#define SYS_msync (SYS_BASE+144)
+#define SYS_readv (SYS_BASE+145)
+#define SYS_writev (SYS_BASE+146)
+#define SYS_getsid (SYS_BASE+147)
+#define SYS_fdatasync (SYS_BASE+148)
+#define SYS__sysctl (SYS_BASE+149)
+#define SYS_mlock (SYS_BASE+150)
+#define SYS_munlock (SYS_BASE+151)
+#define SYS_mlockall (SYS_BASE+152)
+#define SYS_munlockall (SYS_BASE+153)
+#define SYS_sched_setparam (SYS_BASE+154)
+#define SYS_sched_getparam (SYS_BASE+155)
+#define SYS_sched_setscheduler (SYS_BASE+156)
+#define SYS_sched_getscheduler (SYS_BASE+157)
+#define SYS_sched_yield (SYS_BASE+158)
+#define SYS_sched_get_priority_max (SYS_BASE+159)
+#define SYS_sched_get_priority_min (SYS_BASE+160)
+#define SYS_sched_rr_get_interval (SYS_BASE+161)
+#define SYS_nanosleep (SYS_BASE+162)
+#define SYS_mremap (SYS_BASE+163)
+#define SYS_setresuid (SYS_BASE+164)
+#define SYS_getresuid (SYS_BASE+165)
+/* SYS_vm86 was 166 */
+/* SYS_query_module was 167 */
+#define SYS_poll (SYS_BASE+168)
+#define SYS_nfsservctl (SYS_BASE+169)
+#define SYS_setresgid (SYS_BASE+170)
+#define SYS_getresgid (SYS_BASE+171)
+#define SYS_prctl (SYS_BASE+172)
+#define SYS_rt_sigreturn (SYS_BASE+173)
+#define SYS_rt_sigaction (SYS_BASE+174)
+#define SYS_rt_sigprocmask (SYS_BASE+175)
+#define SYS_rt_sigpending (SYS_BASE+176)
+#define SYS_rt_sigtimedwait (SYS_BASE+177)
+#define SYS_rt_sigqueueinfo (SYS_BASE+178)
+#define SYS_rt_sigsuspend (SYS_BASE+179)
+#define SYS_pread64 (SYS_BASE+180)
+#define SYS_pwrite64 (SYS_BASE+181)
+#define SYS_chown (SYS_BASE+182)
+#define SYS_getcwd (SYS_BASE+183)
+#define SYS_capget (SYS_BASE+184)
+#define SYS_capset (SYS_BASE+185)
+#define SYS_sigaltstack (SYS_BASE+186)
+#define SYS_sendfile (SYS_BASE+187)
+/* reserved 188 */
+/* reserved 189 */
+#define SYS_vfork (SYS_BASE+190)
+#define SYS_ugetrlimit (SYS_BASE+191)
+#define SYS_mmap2 (SYS_BASE+192)
+#define SYS_truncate64 (SYS_BASE+193)
+#define SYS_ftruncate64 (SYS_BASE+194)
+#define SYS_stat64 (SYS_BASE+195)
+#define SYS_lstat64 (SYS_BASE+196)
+#define SYS_fstat64 (SYS_BASE+197)
+#define SYS_lchown32 (SYS_BASE+198)
+#define SYS_getuid32 (SYS_BASE+199)
+#define SYS_getgid32 (SYS_BASE+200)
+#define SYS_geteuid32 (SYS_BASE+201)
+#define SYS_getegid32 (SYS_BASE+202)
+#define SYS_setreuid32 (SYS_BASE+203)
+#define SYS_setregid32 (SYS_BASE+204)
+#define SYS_getgroups32 (SYS_BASE+205)
+#define SYS_setgroups32 (SYS_BASE+206)
+#define SYS_fchown32 (SYS_BASE+207)
+#define SYS_setresuid32 (SYS_BASE+208)
+#define SYS_getresuid32 (SYS_BASE+209)
+#define SYS_setresgid32 (SYS_BASE+210)
+#define SYS_getresgid32 (SYS_BASE+211)
+#define SYS_chown32 (SYS_BASE+212)
+#define SYS_setuid32 (SYS_BASE+213)
+#define SYS_setgid32 (SYS_BASE+214)
+#define SYS_setfsuid32 (SYS_BASE+215)
+#define SYS_setfsgid32 (SYS_BASE+216)
+#define SYS_getdents64 (SYS_BASE+217)
+#define SYS_pivot_root (SYS_BASE+218)
+#define SYS_mincore (SYS_BASE+219)
+#define SYS_madvise (SYS_BASE+220)
+#define SYS_fcntl64 (SYS_BASE+221)
+/* SYS_tux reserved 222 */
+/* unused 223 */
+#define SYS_gettid (SYS_BASE+224)
+#define SYS_readahead (SYS_BASE+225)
+#define SYS_setxattr (SYS_BASE+226)
+#define SYS_lsetxattr (SYS_BASE+227)
+#define SYS_fsetxattr (SYS_BASE+228)
+#define SYS_getxattr (SYS_BASE+229)
+#define SYS_lgetxattr (SYS_BASE+230)
+#define SYS_fgetxattr (SYS_BASE+231)
+#define SYS_listxattr (SYS_BASE+232)
+#define SYS_llistxattr (SYS_BASE+233)
+#define SYS_flistxattr (SYS_BASE+234)
+#define SYS_removexattr (SYS_BASE+235)
+#define SYS_lremovexattr (SYS_BASE+236)
+#define SYS_fremovexattr (SYS_BASE+237)
+#define SYS_tkill (SYS_BASE+238)
+#define SYS_sendfile64 (SYS_BASE+239)
+#define SYS_futex (SYS_BASE+240)
+#define SYS_sched_setaffinity (SYS_BASE+241)
+#define SYS_sched_getaffinity (SYS_BASE+242)
+#define SYS_io_setup (SYS_BASE+243)
+#define SYS_io_destroy (SYS_BASE+244)
+#define SYS_io_getevents (SYS_BASE+245)
+#define SYS_io_submit (SYS_BASE+246)
+#define SYS_io_cancel (SYS_BASE+247)
+#define SYS_exit_group (SYS_BASE+248)
+#define SYS_lookup_dcookie (SYS_BASE+249)
+#define SYS_epoll_create (SYS_BASE+250)
+#define SYS_epoll_ctl (SYS_BASE+251)
+#define SYS_epoll_wait (SYS_BASE+252)
+#define SYS_remap_file_pages (SYS_BASE+253)
+/* SYS_set_thread_area reserved 254 */
+/* SYS_get_thread_area reserved 255 */
+#define SYS_set_tid_address (SYS_BASE+256)
+#define SYS_timer_create (SYS_BASE+257)
+#define SYS_timer_settime (SYS_BASE+258)
+#define SYS_timer_gettime (SYS_BASE+259)
+#define SYS_timer_getoverrun (SYS_BASE+260)
+#define SYS_timer_delete (SYS_BASE+261)
+#define SYS_clock_settime (SYS_BASE+262)
+#define SYS_clock_gettime (SYS_BASE+263)
+#define SYS_clock_getres (SYS_BASE+264)
+#define SYS_clock_nanosleep (SYS_BASE+265)
+#define SYS_statfs64 (SYS_BASE+266)
+#define SYS_fstatfs64 (SYS_BASE+267)
+#define SYS_tgkill (SYS_BASE+268)
+#define SYS_utimes (SYS_BASE+269)
+#define SYS_arm_fadvise64_64 (SYS_BASE+270)
+#define SYS_pciconfig_iobase (SYS_BASE+271)
+#define SYS_pciconfig_read (SYS_BASE+272)
+#define SYS_pciconfig_write (SYS_BASE+273)
+#define SYS_mq_open (SYS_BASE+274)
+#define SYS_mq_unlink (SYS_BASE+275)
+#define SYS_mq_timedsend (SYS_BASE+276)
+#define SYS_mq_timedreceive (SYS_BASE+277)
+#define SYS_mq_notify (SYS_BASE+278)
+#define SYS_mq_getsetattr (SYS_BASE+279)
+#define SYS_waitid (SYS_BASE+280)
+
+#define SYS_SOCKET 1
+#define SYS_BIND 2
+#define SYS_CONNECT 3
+#define SYS_LISTEN 4
+#define SYS_ACCEPT 5
+#define SYS_GETSOCKNAME 6
+#define SYS_GETPEERNAME 7
+#define SYS_SOCKETPAIR 8
+#define SYS_SEND 9
+#define SYS_RECV 10
+#define SYS_SENDTO 11
+#define SYS_RECVFROM 12
+#define SYS_SHUTDOWN 13
+#define SYS_SETSOCKOPT 14
+#define SYS_GETSOCKOPT 15
+#define SYS_SENDMSG 16
+#define SYS_RECVMSG 17
+
+#endif /* _LIBGLOSS_ARM_LINUX_UNISTD_H */
--- /dev/null 2006-05-04 16:06:26.438914112 -0600
+++ arm/linux-syscalls0.S 2006-05-05 15:15:57.000000000 -0600
@@ -0,0 +1,193 @@
+/** Linux system call interface for the ARM processor.
+ * Written by Shaun Jackman <sjackman@gmail.com>.
+ * Copyright 2006 Pathway Connectivity
+ *
+ * Permission to use, copy, modify, and distribute this software
+ * is freely granted, provided that this notice is preserved.
+ */
+
+#include "linux-syscall.h"
+
+#if __thumb__
+# define FUNC(name) .type name, %function; .thumb_func; name:
+# define SET .thumb_set
+#else
+# define FUNC(name) .type name, %function; name:
+# define SET .set
+#endif
+
+#define GLOBAL(name) .global name; FUNC(name)
+#define SIZE(name) .size name, .-name
+
+#if __thumb__
+
+# define SYSCALL0(name) \
+ GLOBAL(_ ## name); \
+ mov r3, r7; \
+ mov r7, #SYS_ ## name; \
+ swi; \
+ mov r7, r3; \
+ b _set_errno; \
+ SIZE(_ ## name)
+
+/* static int _syscall3(int a, int b, int c, int number); */
+FUNC(_syscall3)
+ push { r7 }
+ mov r7, r3
+ swi
+ pop { r7 }
+ b _set_errno
+ SIZE(_syscall3)
+
+# define SYSCALL3(name) \
+ GLOBAL(_ ## name); \
+ mov r3, #SYS_ ## name; \
+ b _syscall3; \
+ SIZE(_ ## name)
+
+# define SYSCALL6(name) \
+ GLOBAL(_ ## name); \
+ push { r4 - r5, r7 }; \
+ ldr r4, [sp, #12]; \
+ ldr r5, [sp, #16]; \
+ mov r7, #SYS_ ## name; \
+ swi; \
+ pop { r4 - r5, r7 }; \
+ b _set_errno; \
+ SIZE(_ ## name)
+
+# define SYSCALL4(name) SYSCALL6(name)
+
+#else /* __thumb__ */
+
+# define SYSCALL4(name) \
+ GLOBAL(_ ## name); \
+ swi #SYS_ ## name; \
+ b _set_errno; \
+ SIZE(_ ## name)
+
+# define SYSCALL6(name) \
+ GLOBAL(_ ## name); \
+ push { r4 - r5 }; \
+ ldr r4, [sp, #8]; \
+ ldr r5, [sp, #12]; \
+ swi #SYS_ ## name; \
+ pop { r4 - r5 }; \
+ b _set_errno; \
+ SIZE(_ ## name)
+
+#define SYSCALL0(name) SYSCALL3(name)
+#define SYSCALL3(name) SYSCALL4(name)
+
+#endif /* __thumb__ */
+
+#define SYSCALL1(name) SYSCALL3(name)
+#define SYSCALL2(name) SYSCALL3(name)
+#define SYSCALL5(name) SYSCALL6(name)
+
+SYSCALL1(alarm)
+SYSCALL1(brk)
+SYSCALL1(chdir)
+SYSCALL2(chmod)
+SYSCALL3(chown)
+SYSCALL1(close)
+SYSCALL1(dup)
+SYSCALL2(dup2)
+SYSCALL3(execve)
+SYSCALL1(exit)
+SYSCALL2(fstat)
+SYSCALL3(getdents)
+SYSCALL0(getpid)
+SYSCALL2(gettimeofday)
+SYSCALL3(ioctl)
+SYSCALL2(kill)
+SYSCALL2(link)
+SYSCALL3(lseek)
+SYSCALL2(lstat)
+SYSCALL2(mkdir)
+SYSCALL3(mknod)
+SYSCALL2(nanosleep)
+SYSCALL3(open)
+SYSCALL3(read)
+SYSCALL3(readlink)
+SYSCALL1(rmdir)
+SYSCALL5(select)
+SYSCALL2(socketcall)
+SYSCALL2(stat)
+SYSCALL1(stime)
+SYSCALL2(symlink)
+SYSCALL1(sysinfo)
+SYSCALL1(times)
+SYSCALL2(truncate)
+SYSCALL1(umask)
+SYSCALL1(unlink)
+SYSCALL2(utime)
+SYSCALL0(vfork)
+SYSCALL4(wait4)
+SYSCALL3(write)
+
+#define ALIAS(name) .GLOBAL name; SET name, _ ## name
+
+ALIAS(alarm)
+ALIAS(chdir)
+ALIAS(chmod)
+ALIAS(chown)
+ALIAS(dup)
+ALIAS(dup2)
+ALIAS(getdents)
+ALIAS(ioctl)
+ALIAS(lstat)
+ALIAS(mkdir)
+ALIAS(mknod)
+ALIAS(nanosleep)
+ALIAS(readlink)
+ALIAS(rmdir)
+ALIAS(select)
+ALIAS(stime)
+ALIAS(symlink)
+ALIAS(sysinfo)
+ALIAS(truncate)
+ALIAS(umask)
+ALIAS(utime)
+ALIAS(vfork)
+ALIAS(wait4)
+
+# define SOCKETCALL(name, NAME) \
+ GLOBAL(name); \
+ push { r0 - r3 }; \
+ mov r0, #SYS_ ## NAME; \
+ b _socketcall_tail; \
+ SIZE(name)
+
+FUNC(_socketcall_tail)
+ mov r1, sp
+ push { lr }
+ bl _socketcall
+ pop { r3 }
+ add sp, #16
+ bx r3
+ SIZE(_socketcall_tail)
+
+#define SOCKETCALL2(name, NAME) SOCKETCALL(name, NAME)
+#define SOCKETCALL3(name, NAME) SOCKETCALL(name, NAME)
+#define SOCKETCALL4(name, NAME) SOCKETCALL(name, NAME)
+#define SOCKETCALL5(name, NAME) SOCKETCALL(name, NAME)
+#define SOCKETCALL6(name, NAME) SOCKETCALL(name, NAME)
+
+SOCKETCALL3(accept, ACCEPT)
+SOCKETCALL3(bind, BIND)
+SOCKETCALL3(connect, CONNECT)
+SOCKETCALL3(getpeername, GETPEERNAME)
+SOCKETCALL3(getsockname, GETSOCKNAME)
+SOCKETCALL5(getsockopt, GETSOCKOPT)
+SOCKETCALL2(listen, LISTEN)
+SOCKETCALL4(recv, RECV)
+SOCKETCALL6(recvfrom, RECVFROM)
+SOCKETCALL3(recvmsg, RECVMSG)
+SOCKETCALL4(send, SEND)
+SOCKETCALL3(sendmsg, SENDMSG)
+SOCKETCALL6(sendto, SENDTO)
+SOCKETCALL5(setsockopt, SETSOCKOPT)
+SOCKETCALL2(shutdown, SHUTDOWN)
+SOCKETCALL3(socket, SOCKET)
+SOCKETCALL4(socketpair, SOCKETPAIR)
--- /dev/null 2006-05-04 16:06:26.438914112 -0600
+++ arm/linux-syscalls1.c 2006-05-05 15:27:32.000000000 -0600
@@ -0,0 +1,64 @@
+/** Linux system call interface.
+ * Written by Shaun Jackman <sjackman@gmail.com>.
+ * Copyright 2006 Pathway Connectivity
+ *
+ * Permission to use, copy, modify, and distribute this software
+ * is freely granted, provided that this notice is preserved.
+ */
+
+#include <errno.h>
+#include <stdint.h>
+
+extern char _end[];
+static void *curbrk = _end;
+
+extern void *_brk(void *addr);
+
+int brk(void *addr)
+{
+ void *newbrk;
+ if (curbrk == addr)
+ return 0;
+ newbrk = _brk(addr);
+ curbrk = newbrk;
+ if (newbrk < addr) {
+ errno = ENOMEM;
+ return -1;
+ }
+ return 0;
+}
+
+void *_sbrk(intptr_t incr)
+{
+ void *oldbrk = curbrk;
+ if (brk(oldbrk + incr) == -1)
+ return (void *)-1;
+ return oldbrk;
+}
+
+void *sbrk(intptr_t incr) __attribute__((alias("_sbrk")));
+
+int _set_errno(int n)
+{
+ if (n < 0) {
+ errno = -n;
+ return -1;
+ }
+ return n;
+}
+
+#include <sys/wait.h>
+
+struct rusage;
+
+pid_t wait4(pid_t pid, int *status, int options, struct rusage *rusage);
+
+pid_t wait(int *status)
+{
+ return wait4(-1, status, 0, NULL);
+}
+
+pid_t waitpid(pid_t pid, int *status, int options)
+{
+ return wait4(pid, status, options, NULL);
+}