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Diffstat (limited to 'libexec/ld.so/alpha/ldasm.S')
| -rw-r--r-- | libexec/ld.so/alpha/ldasm.S | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/libexec/ld.so/alpha/ldasm.S b/libexec/ld.so/alpha/ldasm.S new file mode 100644 index 00000000000..0e2cac14f85 --- /dev/null +++ b/libexec/ld.so/alpha/ldasm.S @@ -0,0 +1,176 @@ +/* $OpenBSD: ldasm.S,v 1.1 2001/05/14 22:18:20 niklas Exp $ */ + +/* + * Copyright (c) 2001 Niklas Hallqvist + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed under OpenBSD by + * Niklas Hallqvist. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + +#include <machine/asm.h> +#include <machine/pal.h> +#include <sys/syscall.h> + +#define AUX_entry 9 + + .extern _GLOBAL_OFFSET_TABLE_ + +/* Not really a leaf... but we are special. */ +LEAF_NOPROFILE(_dl_start, 0) + .set noreorder + lda sp, (-8 - ((AUX_entry + 1) * 8))(sp) + br pv, L1 +L1: + LDGP(pv) + ldiq t2, L1 + subq pv, t2, t2 + lda t0, _GLOBAL_OFFSET_TABLE_ + addq t0, t2, t0 + lda t1, _DYNAMIC + addq t1, t2, t1 +L2: cmpult t0, t1, t3 + beq t3, L3 + ldq t3, 0(t0) + addq t3, t2, t3 + stq t3, 0(t0) + lda t0, 8(t0) + br L2 +L3: + mov a0, s0 + mov t2, a1 /* relocation displacement */ + mov a1, s1 + ldq a2, 0(a0) /* argc */ + lda a3, 8(a0) /* argv */ + mov a3, s3 + lda t3, 1(a2) + sll t3, 3, t3 + addq a3, t3, a4 /* envp */ + mov a4, s4 + mov t1, a5 /* dynamic */ + mov a5, s5 + lda s2, 8(sp) + stq s2, 0(sp) /* dl_link */ + CALL(_dl_boot_bind) + mov s3, a0 + mov s4, a1 + mov s1, a2 + mov s5, a3 + mov s2, a4 + CALL(_dl_boot) + mov s0, a0 + mov v0, pv + jsr ra, (pv) +END(_dl_start) + +/* + * In reality these are not leaves, but they are stubs which does not need + * further register saving. + */ + +LEAF_NOPROFILE(_dl_exit, 1) + ldiq v0, SYS_exit + call_pal PAL_OSF1_callsys + RET +END(_dl_exit) + +LEAF_NOPROFILE(_dl_open, 2) + ldiq v0, SYS_open + call_pal PAL_OSF1_callsys + RET +END(_dl_open) + +LEAF_NOPROFILE(_dl_close, 1) + ldiq v0, SYS_close + call_pal PAL_OSF1_callsys + RET +END(_dl_close) + +LEAF_NOPROFILE(_dl_write, 3) + ldiq v0, SYS_write + call_pal PAL_OSF1_callsys + RET +END(_dl_write) + +LEAF_NOPROFILE(_dl_read, 3) + ldiq v0, SYS_read + call_pal PAL_OSF1_callsys + RET +END(_dl_exit) + +LEAF_NOPROFILE(_dl_mmap, 6) + lda sp, -8(sp) + stq a5, 0(sp) + ldiq v0, SYS_mmap + call_pal PAL_OSF1_callsys + lda sp, 8(sp) + RET +END(_dl_mmap) + +LEAF_NOPROFILE(_dl_munmap, 2) + ldiq v0, SYS_munmap + call_pal PAL_OSF1_callsys + RET +END(_dl_munmap) + +LEAF_NOPROFILE(_dl_mprotect, 3) + ldiq v0, SYS_mprotect + call_pal PAL_OSF1_callsys + RET +END(_dl_mprotect) + +LEAF_NOPROFILE(_dl_getuid, 0) + ldiq v0, SYS_getuid + call_pal PAL_OSF1_callsys + RET +END(_dl_getuid) + +LEAF_NOPROFILE(_dl_geteuid, 0) + ldiq v0, SYS_geteuid + call_pal PAL_OSF1_callsys + RET +END(_dl_geteuid) + +LEAF_NOPROFILE(_dl_getgid, 0) + ldiq v0, SYS_getgid + call_pal PAL_OSF1_callsys + RET +END(_dl_getgid) + +LEAF_NOPROFILE(_dl_getegid, 0) + ldiq v0, SYS_getegid + call_pal PAL_OSF1_callsys + RET +END(_dl_getegid) + +#ifdef USE_CACHE +LEAF_NOPROFILE(_dl_stat, 2) + ldiq v0, SYS_stat + call_pal PAL_OSF1_callsys + RET +END(_dl_stat) +#endif |