diff options
Diffstat (limited to 'mdk-stage1/dietlibc/ppc')
| -rw-r--r-- | mdk-stage1/dietlibc/ppc/__testandset.S | 9 | ||||
| -rw-r--r-- | mdk-stage1/dietlibc/ppc/clone.S | 48 | ||||
| -rw-r--r-- | mdk-stage1/dietlibc/ppc/mmap.c | 11 | ||||
| -rw-r--r-- | mdk-stage1/dietlibc/ppc/start.S | 32 | ||||
| -rw-r--r-- | mdk-stage1/dietlibc/ppc/syscalls.h | 259 | ||||
| -rw-r--r-- | mdk-stage1/dietlibc/ppc/unified.S | 37 |
6 files changed, 362 insertions, 34 deletions
diff --git a/mdk-stage1/dietlibc/ppc/__testandset.S b/mdk-stage1/dietlibc/ppc/__testandset.S index a6063fbb2..146982337 100644 --- a/mdk-stage1/dietlibc/ppc/__testandset.S +++ b/mdk-stage1/dietlibc/ppc/__testandset.S @@ -2,10 +2,11 @@ .type __testandset,@function .align 2 __testandset: - lwarx 5,0,3 - add 0,4,5 - stwcx 0,0,3 - bne __testandset +1: lwarx 5,0,3 + li 0,1 + stwcx. 0,0,3 + bne- 1b + mr 3,5 blr .size __testandset,.-__testandset diff --git a/mdk-stage1/dietlibc/ppc/clone.S b/mdk-stage1/dietlibc/ppc/clone.S new file mode 100644 index 000000000..98f6bd4e8 --- /dev/null +++ b/mdk-stage1/dietlibc/ppc/clone.S @@ -0,0 +1,48 @@ +#include <dietfeatures.h> +#include "syscalls.h" +#include <errno.h> + +.text +.weak clone +clone: +.global __clone +__clone: + cmpwi 4,0 /* check have non null child_stack pointer */ + cmpwi cr1, 3,0 /* check have non null thread_funcion */ + cror eq,4*cr1+eq,eq /* now if eq is set one is or both are zero */ + beq .Lclone_error + + stwu 1,-32(1) /* alloc some space on the stack */ + stmw 29, 16(1) /* save r29,r30,r31 on stack */ + + rlwinm 4,4,0,0,27 /* mask out lower 4 bits */ + + /* move parameter to positions clone wants them */ + mr 29,3 /* r29 = r3 fn */ + mr 30,4 /* r30 = r4 stack */ + mr 31,6 /* r31 = r6 arg */ + mr 3, 5 /* r3 = r5 flags */ + + li 0, __NR_clone /* load syscall nr. */ + sc + + cmpwi cr1,3,0 /* compare return of syscall with 0 */ + crandc 4*cr1+eq,4*cr1+eq,so + bne .Lclone_parent /* return was non zero -> .Lclone_parent */ + + /* we are the cloned process */ + mr 1, 30 /* set stack pointer */ + mtctr 29 /* set count register to fn ? */ + mr 3, 31 /* set argument */ + bctrl /* branch trough count register and link */ + b _exit /* exit thread */ + +.Lclone_parent: + lmw 29,16(1) /* restore saved registers */ + addi 1, 1,32 /* free stack */ + bnslr+ /* had cloned a thread so return to parent */ + b error_unified_syscall + +.Lclone_error: + li 3, EINVAL + b error_unified_syscall diff --git a/mdk-stage1/dietlibc/ppc/mmap.c b/mdk-stage1/dietlibc/ppc/mmap.c index 25d2926b2..d03e87089 100644 --- a/mdk-stage1/dietlibc/ppc/mmap.c +++ b/mdk-stage1/dietlibc/ppc/mmap.c @@ -1,5 +1,7 @@ -#include <linux/types.h> -#include <linux/unistd.h> +#include "dietfeatures.h" +#include <sys/types.h> +#include <errno.h> +#include "syscalls.h" int mmap(void*start,size_t length,int prot,int flags,int fd,off_t offset) { unsigned long __sc_ret, __sc_err; @@ -29,9 +31,10 @@ int mmap(void*start,size_t length,int prot,int flags,int fd,off_t offset) { "r" (__sc_6), "r" (__sc_7), "r" (__sc_8) - : __syscall_clobbers); + : "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"); __sc_ret = __sc_3; __sc_err = __sc_0; } - __syscall_return (int); + return (__sc_err & 0x10000000 ? errno = __sc_ret, __sc_ret = -1 : 0), + (int) __sc_ret; } diff --git a/mdk-stage1/dietlibc/ppc/start.S b/mdk-stage1/dietlibc/ppc/start.S index c7afeecd2..7b2aed7fb 100644 --- a/mdk-stage1/dietlibc/ppc/start.S +++ b/mdk-stage1/dietlibc/ppc/start.S @@ -1,21 +1,17 @@ -#include "start.h" - -#ifdef __powerpc__ - .text .global _start .type _start,@function _start: /* Save the stack pointer, in case we're statically linked under Linux. */ - mr 9,1 + mr 9,1 /* Set up an initial stack frame, and clear the LR. */ - clrrwi 1,1,4 - li 0,0 - stwu 1,-16(1) - mtlr 0 - stw 0,0(1) + clrrwi 1,1,4 + li 0,0 + stwu 1,-16(1) + mtlr 0 + stw 0,0(1) - /* r9 enthält den initialen Stackpointer. + /* r9 contains the initial stack pointer argc = (r9) argv = (r9+4) envp = argv+(argc+1)*4 */ @@ -27,18 +23,20 @@ _start: slwi 5,5,2 /* (argc+1)*4 */ add 5,5,4 /* argv+(argc+1)*4 */ - lis 6,environ@ha - stw 5,environ@l(6) + lis 14,environ@ha + stw 5,environ@l(14) +#ifdef WANT_DYNAMIC + mr 6,7 + bl _dyn_start +#else bl main +#endif b exit .size _start,.-_start /* Define a symbol for the first piece of initialized data. */ - .section ".data" + .section ".data" __data_start: - -#endif - diff --git a/mdk-stage1/dietlibc/ppc/syscalls.h b/mdk-stage1/dietlibc/ppc/syscalls.h new file mode 100644 index 000000000..5e8707357 --- /dev/null +++ b/mdk-stage1/dietlibc/ppc/syscalls.h @@ -0,0 +1,259 @@ + +#define __NR_exit 1 +#define __NR_fork 2 +#define __NR_read 3 +#define __NR_write 4 +#define __NR_open 5 +#define __NR_close 6 +#define __NR_waitpid 7 +#define __NR_creat 8 +#define __NR_link 9 +#define __NR_unlink 10 +#define __NR_execve 11 +#define __NR_chdir 12 +#define __NR_time 13 +#define __NR_mknod 14 +#define __NR_chmod 15 +#define __NR_lchown 16 +#define __NR_break 17 +#define __NR_oldstat 18 +#define __NR_lseek 19 +#define __NR_getpid 20 +#define __NR_mount 21 +#define __NR_umount 22 +#define __NR_setuid 23 +#define __NR_getuid 24 +#define __NR_stime 25 +#define __NR_ptrace 26 +#define __NR_alarm 27 +#define __NR_oldfstat 28 +#define __NR_pause 29 +#define __NR_utime 30 +#define __NR_stty 31 +#define __NR_gtty 32 +#define __NR_access 33 +#define __NR_nice 34 +#define __NR_ftime 35 +#define __NR_sync 36 +#define __NR_kill 37 +#define __NR_rename 38 +#define __NR_mkdir 39 +#define __NR_rmdir 40 +#define __NR_dup 41 +#define __NR_pipe 42 +#define __NR_times 43 +#define __NR_prof 44 +#define __NR_brk 45 +#define __NR_setgid 46 +#define __NR_getgid 47 +#define __NR_signal 48 +#define __NR_geteuid 49 +#define __NR_getegid 50 +#define __NR_acct 51 +#define __NR_umount2 52 +#define __NR_lock 53 +#define __NR_ioctl 54 +#define __NR_fcntl 55 +#define __NR_mpx 56 +#define __NR_setpgid 57 +#define __NR_ulimit 58 +#define __NR_oldolduname 59 +#define __NR_umask 60 +#define __NR_chroot 61 +#define __NR_ustat 62 +#define __NR_dup2 63 +#define __NR_getppid 64 +#define __NR_getpgrp 65 +#define __NR_setsid 66 +#define __NR_sigaction 67 +#define __NR_sgetmask 68 +#define __NR_ssetmask 69 +#define __NR_setreuid 70 +#define __NR_setregid 71 +#define __NR_sigsuspend 72 +#define __NR_sigpending 73 +#define __NR_sethostname 74 +#define __NR_setrlimit 75 +#define __NR_getrlimit 76 +#define __NR_getrusage 77 +#define __NR_gettimeofday 78 +#define __NR_settimeofday 79 +#define __NR_getgroups 80 +#define __NR_setgroups 81 +#define __NR_select 82 +#define __NR_symlink 83 +#define __NR_oldlstat 84 +#define __NR_readlink 85 +#define __NR_uselib 86 +#define __NR_swapon 87 +#define __NR_reboot 88 +#define __NR_readdir 89 +#define __NR_mmap 90 +#define __NR_munmap 91 +#define __NR_truncate 92 +#define __NR_ftruncate 93 +#define __NR_fchmod 94 +#define __NR_fchown 95 +#define __NR_getpriority 96 +#define __NR_setpriority 97 +#define __NR_profil 98 +#define __NR_statfs 99 +#define __NR_fstatfs 100 +#define __NR_ioperm 101 +#define __NR_socketcall 102 +#define __NR_syslog 103 +#define __NR_setitimer 104 +#define __NR_getitimer 105 +#define __NR_stat 106 +#define __NR_lstat 107 +#define __NR_fstat 108 +#define __NR_olduname 109 +#define __NR_iopl 110 +#define __NR_vhangup 111 +#define __NR_idle 112 +#define __NR_vm86 113 +#define __NR_wait4 114 +#define __NR_swapoff 115 +#define __NR_sysinfo 116 +#define __NR_ipc 117 +#define __NR_fsync 118 +#define __NR_sigreturn 119 +#define __NR_clone 120 +#define __NR_setdomainname 121 +#define __NR_uname 122 +#define __NR_modify_ldt 123 +#define __NR_adjtimex 124 +#define __NR_mprotect 125 +#define __NR_sigprocmask 126 +#define __NR_create_module 127 +#define __NR_init_module 128 +#define __NR_delete_module 129 +#define __NR_get_kernel_syms 130 +#define __NR_quotactl 131 +#define __NR_getpgid 132 +#define __NR_fchdir 133 +#define __NR_bdflush 134 +#define __NR_sysfs 135 +#define __NR_personality 136 +#define __NR_afs_syscall 137 /* Syscall for Andrew File System */ +#define __NR_setfsuid 138 +#define __NR_setfsgid 139 +#define __NR__llseek 140 +#define __NR_getdents 141 +#define __NR__newselect 142 +#define __NR_flock 143 +#define __NR_msync 144 +#define __NR_readv 145 +#define __NR_writev 146 +#define __NR_getsid 147 +#define __NR_fdatasync 148 +#define __NR__sysctl 149 +#define __NR_mlock 150 +#define __NR_munlock 151 +#define __NR_mlockall 152 +#define __NR_munlockall 153 +#define __NR_sched_setparam 154 +#define __NR_sched_getparam 155 +#define __NR_sched_setscheduler 156 +#define __NR_sched_getscheduler 157 +#define __NR_sched_yield 158 +#define __NR_sched_get_priority_max 159 +#define __NR_sched_get_priority_min 160 +#define __NR_sched_rr_get_interval 161 +#define __NR_nanosleep 162 +#define __NR_mremap 163 +#define __NR_setresuid 164 +#define __NR_getresuid 165 +#define __NR_query_module 166 +#define __NR_poll 167 +#define __NR_nfsservctl 168 +#define __NR_setresgid 169 +#define __NR_getresgid 170 +#define __NR_prctl 171 +#define __NR_rt_sigreturn 172 +#define __NR_rt_sigaction 173 +#define __NR_rt_sigprocmask 174 +#define __NR_rt_sigpending 175 +#define __NR_rt_sigtimedwait 176 +#define __NR_rt_sigqueueinfo 177 +#define __NR_rt_sigsuspend 178 +#define __NR_pread 179 +#define __NR_pwrite 180 +#define __NR_chown 181 +#define __NR_getcwd 182 +#define __NR_capget 183 +#define __NR_capset 184 +#define __NR_sigaltstack 185 +#define __NR_sendfile 186 +#define __NR_getpmsg 187 /* some people actually want streams */ +#define __NR_putpmsg 188 /* some people actually want streams */ +#define __NR_vfork 189 +#define __NR_ugetrlimit 190 /* SuS compliant getrlimit */ +#define __NR_mmap2 192 +#define __NR_truncate64 193 +#define __NR_ftruncate64 194 +#define __NR_stat64 195 +#define __NR_lstat64 196 +#define __NR_fstat64 197 +#define __NR_pciconfig_read 198 +#define __NR_pciconfig_write 199 +#define __NR_pciconfig_iobase 200 +#define __NR_multiplexer 201 +#define __NR_getdents64 202 +#define __NR_pivot_root 203 +#define __NR_fcntl64 204 +#define __NR_madvise 205 +#define __NR_mincore 206 +#define __NR_gettid 207 +#define __NR_tkill 208 +#define __NR_setxattr 209 +#define __NR_lsetxattr 210 +#define __NR_fsetxattr 211 +#define __NR_getxattr 212 +#define __NR_lgetxattr 213 +#define __NR_fgetxattr 214 +#define __NR_listxattr 215 +#define __NR_llistxattr 216 +#define __NR_flistxattr 217 +#define __NR_removexattr 218 +#define __NR_lremovexattr 219 +#define __NR_fremovexattr 220 +#define __NR_futex 221 +#define __NR_sched_setaffinity 222 +#define __NR_sched_getaffinity 223 +#define __NR_security 224 +#define __NR_tuxcall 225 +#define __NR_sendfile64 226 +#define __NR_io_setup 227 +#define __NR_io_destroy 228 +#define __NR_io_getevents 229 +#define __NR_io_submit 230 +#define __NR_io_cancel 231 +#define __NR_alloc_hugepages 232 +#define __NR_free_hugepages 233 +#define __NR_exit_group 234 +#define __NR_lookup_dcookie 235 +#define __NR_sys_epoll_create 236 +#define __NR_sys_epoll_ctl 237 +#define __NR_sys_epoll_wait 238 +#define __NR_remap_file_pages 239 + +#define syscall_weak(name,wsym,sym) \ +.text; \ +.type wsym,@function; \ +.weak wsym; \ +wsym: ; \ +.type sym,@function; \ +.global sym; \ +sym: \ + li 0,__NR_##name; \ + b __unified_syscall + +#define syscall(name,sym) \ +.text; \ +.type sym,@function; \ +.global sym; \ +sym: \ + li 0,__NR_##name; \ + b __unified_syscall + diff --git a/mdk-stage1/dietlibc/ppc/unified.S b/mdk-stage1/dietlibc/ppc/unified.S index d2b419f0b..eb136a96b 100644 --- a/mdk-stage1/dietlibc/ppc/unified.S +++ b/mdk-stage1/dietlibc/ppc/unified.S @@ -1,21 +1,40 @@ #include <dietfeatures.h> +#include "syscalls.h" .text +.type exit,@function +.weak exit +exit: +.type _exit,@function +.global _exit +_exit: + li 0,__NR_exit .global __unified_syscall __unified_syscall: sc - mfcr 0 - andis. 9,0,4096 - mr 0,3 - beq .L1 -#ifdef WANT_THREAD_SAVE - bl __set_errno + bnslr+ + +.global error_unified_syscall +error_unified_syscall: +#ifdef WANT_THREAD_SAFE + stwu 1,-16(1) + mflr 0 + stw 0,20(1) + stw 3,12(1) + bl __errno_location + lwz 0,12(1) + stw 0,0(3) + lwz 0,20(1) + mtlr 0 + addi 1,1,16 #else lis 9,errno@ha stw 3,errno@l(9) #endif - li 0,-1 -.L1: - mr 3,0 + li 3,-1 + +/* here we go and "reuse" the return for weak-void functions */ +#include "dietuglyweaks.h" + blr |