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update from main archive 960807
This commit is contained in:
Ulrich Drepper
parent
ad1a0a0a64
commit
b870eeda1d
@ -28,20 +28,17 @@ compiler treats those calls as if they were instructions. In
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particular, it doesn't save any of the temporary registers (caller
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saved registers). It is therefore necessary to preserve all
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caller-saved registers as well
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Upon entering _mcount, register $at holds the return address and ra
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holds the return address of the function's caller (selfpc and frompc,
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respectively in gmon.c language...). */
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#include <sysdep.h>
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#undef ret /* discard `ret' as defined in sysdep.h */
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.set noat
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.set noreorder
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LEAF(_mcount, 0xb0)
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weak_alias (_mcount, mcount)
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.prologue 0
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subq sp, 0xb0, sp
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@ -69,8 +66,6 @@ weak_alias (_mcount, mcount)
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stq t5, 0x70(sp)
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stq t6, 0x78(sp)
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lda pv, __mcount
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stq t7, 0x80(sp)
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stq t8, 0x88(sp)
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stq t9, 0x90(sp)
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@ -78,7 +73,7 @@ weak_alias (_mcount, mcount)
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stq t11, 0xa0(sp)
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stq v0, 0xa8(sp)
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jsr ra, (pv), __mcount
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jsr ra, __mcount
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ldq a0, 0x00(sp)
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ldq a1, 0x08(sp)
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@ -108,3 +103,5 @@ weak_alias (_mcount, mcount)
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ret zero,($at),1
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END(_mcount)
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weak_alias (_mcount, mcount)
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@ -40,10 +40,10 @@ ENTRY(__bb_init_func)
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ldq t0, ZERO_WORD(a0) /* t0 <- blocks->zero_word */
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beq t0, init /* not initialized yet -> */
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ret
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END(__bb_init_func)
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.ent init
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.ent init
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init:
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.frame sp, 0x38, ra, 0
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subq sp, 0x38, sp
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@ -61,8 +61,8 @@ init:
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stq t0, ZERO_WORD(a0) /* blocks->zero_word = 1 */
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stq t2, NEXT(a0) /* blocks->next = __bb_head */
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stq a0, 0(t1)
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bne t2, leave
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beq t3, leave /* t3 == GMON_PROF_ON? yes -> */
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bne t2, $leave
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beq t3, $leave /* t3 == GMON_PROF_ON? yes -> */
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/* also need to initialize destructor: */
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stq ra, 0x00(sp)
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@ -81,8 +81,8 @@ init:
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ldq a4, 0x20(sp)
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ldq a5, 0x28(sp)
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leave: ldq pv, 0x30(sp)
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$leave: ldq pv, 0x30(sp)
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addq sp, 0x38, sp
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ret
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.end init
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.end init
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@ -1,5 +1,5 @@
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/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. Alpha version.
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Copyright (C) 1994 Free Software Foundation, Inc.
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Copyright (C) 1994, 1996 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -24,7 +24,8 @@ Cambridge, MA 02139, USA. */
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#include <sysdep.h>
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ENTRY(_setjmp)
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lda $27, __sigsetjmp /* Load address to jump to. */
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ldgp $29,0($27)
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.prologue 1
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bis $31, $31, $17 /* Pass a second argument of zero. */
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jmp $31, ($27), __sigsetjmp /* Call __sigsetjmp. */
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jmp $31, __sigsetjmp /* Call __sigsetjmp. */
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END(_setjmp)
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@ -1,5 +1,5 @@
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/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. Alpha version.
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Copyright (C) 1994 Free Software Foundation, Inc.
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Copyright (C) 1994, 1996 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -24,7 +24,8 @@ Cambridge, MA 02139, USA. */
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#include <sysdep.h>
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ENTRY(setjmp)
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lda $27, __sigsetjmp /* Load address to jump to. */
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ldgp $29, 0($27)
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.prologue 1
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bis $31, 1, $17 /* Pass a second argument of one. */
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jmp $31, ($27), __sigsetjmp /* Call __sigsetjmp. */
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jmp $31, __sigsetjmp /* Call __sigsetjmp. */
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END(setjmp)
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@ -115,10 +115,9 @@ FUNC_NAME:
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br AT, 1f
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1: ldgp gp, 0(AT)
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lda AT, _mcount
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mov retaddr, ra
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jsr AT, (AT), _mcount
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jsr AT, _mcount
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ldq ra, 0x00(sp)
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ldq pv, 0x08(sp)
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@ -137,7 +136,7 @@ FUNC_NAME:
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stq tmp0,0x18(sp)
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bis zero,zero,quotient
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stq tmp1,0x20(sp)
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beq divisor,divbyzero
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beq divisor,$divbyzero
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stq sign,0x28(sp)
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GETSIGN(dividend,divisor,sign)
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#if SIGNED
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@ -170,7 +169,7 @@ FUNC_NAME:
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ldq arg1,0x00(sp)
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SETSIGN(sign,result,tmp0)
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done: ldq arg2,0x08(sp)
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$done: ldq arg2,0x08(sp)
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ldq mask,0x10(sp)
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ldq tmp0,0x18(sp)
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ldq tmp1,0x20(sp)
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@ -178,11 +177,11 @@ done: ldq arg2,0x08(sp)
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lda sp,FRAME_SIZE(sp)
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ret zero,(retaddr),0
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divbyzero:
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$divbyzero:
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lda a0,GEN_INTDIV(zero)
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call_pal PAL_gentrap
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bis zero,zero,result /* if trap returns, return 0 */
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ldq arg1,0x00(sp)
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br done
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br $done
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END(FUNC_NAME)
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@ -34,7 +34,7 @@ ENTRY(ffs)
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negq a0, t0 # due to the srl instruction
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and a0, t0, t0
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clr v0
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beq a0, done
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beq a0, $done
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# now do binary search for first non-zero bit
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@ -61,6 +61,6 @@ ENTRY(ffs)
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addq v0, 1, t3
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cmoveq t2, t3, v0
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done: ret
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$done: ret
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END(ffs)
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@ -42,7 +42,7 @@ For correctness consider that:
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ENTRY(memchr)
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.prologue 0
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beq a2, not_found
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beq a2, $not_found
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ldq_u t0, 0(a0) # load first quadword (a0 may be misaligned)
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addq a0, a2, t4
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and a1, 0xff, a1 # a1 = 00000000000000ch
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@ -57,7 +57,7 @@ ENTRY(memchr)
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extql t0, a0, t6
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or t1, a1, a1 # a1 = chchchchchchchch
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beq t3, first_quad
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beq t3, $first_quad
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extqh t5, a0, t5
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mov a0, v0
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@ -68,15 +68,15 @@ ENTRY(memchr)
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# in t0. E.g.:
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# a2 = 6
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# t0 = ????c6c5c4c3c2c1
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last_quad:
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$last_quad:
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negq a2, t5
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srl t2, t5, t5 # t5 = mask of a2 bits set
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xor a1, t0, t0
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cmpbge zero, t0, t1
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and t1, t5, t1
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beq t1, not_found
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beq t1, $not_found
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found_it:
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$found_it:
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# now, determine which byte matched:
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negq t1, t2
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and t1, t2, t1
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@ -93,20 +93,20 @@ found_it:
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addq v0, 1, t2
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cmoveq t0, t2, v0
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done: ret
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$done: ret
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#
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# Deal with the case where a2 > 8 bytes remain to be
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# searched. a0 may not be aligned.
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#
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first_quad:
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$first_quad:
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andnot a0, 0x7, v0
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insqh t2, a0, t1 # t1 = 0000ffffffffffff (a0<0:2> ff bytes)
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xor t0, a1, t0
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or t0, t1, t0 # t0 = ====ffffffffffff
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cmpbge zero, t0, t1
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bne t1, found_it
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bne t1, $found_it
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/* at least one byte left to process */
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@ -119,41 +119,41 @@ first_quad:
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subq t4, 1, a2
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andnot a2, 0x7, a2
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cmpult v0, a2, t1
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beq t1, final
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beq t1, $final
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/* at least two quads remain to be accessed */
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subq a2, v0, t3 # t3 <- number of quads to be processed in loop
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and t3, 8, t3 # odd number of quads?
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bne t3, odd_quad_count
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bne t3, $odd_quad_count
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/* at least three quads remain to be accessed */
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mov t0, t3 # move prefetched value into correct register
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.align 3
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unrolled_loop:
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$unrolled_loop:
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ldq t0, 8(v0) # prefetch t0
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xor a1, t3, t1
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cmpbge zero, t1, t1
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bne t1, found_it
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bne t1, $found_it
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addq v0, 8, v0
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odd_quad_count:
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$odd_quad_count:
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xor a1, t0, t1
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ldq t3, 8(v0) # prefetch t3
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cmpbge zero, t1, t1
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bne t1, found_it
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bne t1, $found_it
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addq v0, 8, v0
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cmpult v0, a2, t5
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bne t5, unrolled_loop
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bne t5, $unrolled_loop
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mov t3, t0 # move prefetched value into t0
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final: subq t4, v0, a2 # a2 <- number of bytes left to do
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bne a2, last_quad
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$final: subq t4, v0, a2 # a2 <- number of bytes left to do
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bne a2, $last_quad
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not_found:
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$not_found:
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mov zero, v0
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ret
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@ -1,4 +1,4 @@
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/* Copyright (C) 1992, 1994 Free Software Foundation, Inc.
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/* Copyright (C) 1992, 1994, 1996 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -25,9 +25,8 @@ ENTRY (__sigsetjmp)
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ldgp $29, 0($27)
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.prologue 1
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lda $27, __sigsetjmp_aux /* Load address to jump to. */
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bis $30, $30, $18 /* Pass SP as 3rd arg. */
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bis $15, $15, $19 /* Pass FP as 4th arg. */
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jmp $31, ($27), __sigsetjmp_aux /* Call __sigsetjmp_aux. */
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jmp $31, __sigsetjmp_aux /* Call __sigsetjmp_aux. */
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END(__sigsetjmp)
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@ -19,52 +19,50 @@ not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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/* Finds length of a 0-terminated string. Optimized for the Alpha
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architecture:
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architecture:
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- memory accessed as aligned quadwords only
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- uses bcmpge to compare 8 bytes in parallel
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- does binary search to find 0 byte in last
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quadword (HAKMEM needed 12 instructions to
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do this instead of the 9 instructions that
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binary search needs). */
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- uses cmpbge to compare 8 bytes in parallel
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- does binary search to find 0 byte in last quadword (HAKMEM
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needed 12 instructions to do this instead of the 8 instructions
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that the binary search needs).
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*/
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#include <sysdep.h>
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.set noreorder
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.set noat
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.set noreorder
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.set noat
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ENTRY(strlen)
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ldq_u t0, 0(a0) # load first quadword (a0 may be misaligned)
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lda t1, -1(zero)
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insqh t1, a0, t1
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andnot a0, 7, v0
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or t1, t0, t0
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cmpbge zero, t0, t1 # t1 <- bitmask: bit i == 1 <==> i-th byte == 0
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bne t1, found
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ldq_u t0, 0(a0) # load first quadword (a0 may be misaligned)
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lda t1, -1(zero)
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insqh t1, a0, t1
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andnot a0, 7, v0
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or t1, t0, t0
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nop # dual issue the next two on ev5
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cmpbge zero, t0, t1 # t1 <- bitmask: bit i == 1 <==> i-th byte == 0
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bne t1, $found
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loop: ldq t0, 8(v0)
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addq v0, 8, v0 # addr += 8
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nop # helps dual issue last two insns
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cmpbge zero, t0, t1
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beq t1, loop
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$loop: ldq t0, 8(v0)
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addq v0, 8, v0 # addr += 8
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cmpbge zero, t0, t1
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beq t1, $loop
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found: blbs t1, done # make aligned case fast
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negq t1, t2
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and t1, t2, t1
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$found: negq t1, t2 # clear all but least set bit
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and t1, t2, t1
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and t1, 0x0f, t0
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addq v0, 4, t2
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cmoveq t0, t2, v0
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and t1, 0xf0, t2 # binary search for that set bit
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and t1, 0xcc, t3
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and t1, 0xaa, t4
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cmovne t2, 4, t2
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cmovne t3, 2, t3
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cmovne t4, 1, t4
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addq t2, t3, t2
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addq v0, t4, v0
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addq v0, t2, v0
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nop # dual issue next two on ev4 and ev5
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and t1, 0x33, t0
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addq v0, 2, t2
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cmoveq t0, t2, v0
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subq v0, a0, v0
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ret
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and t1, 0x55, t0
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addq v0, 1, t2
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cmoveq t0, t2, v0
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done: subq v0, a0, v0
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ret
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END(strlen)
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END(strlen)
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@ -1,4 +1,4 @@
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/* Copyright (C) 1993, 1995 Free Software Foundation, Inc.
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/* Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
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Contributed by Brendan Kehoe (brendan@zen.org).
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The GNU C Library is free software; you can redistribute it and/or
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@ -23,7 +23,16 @@ break value (instead of the new, requested one). */
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#include <sysdep.h>
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#include <errnos.h>
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#ifdef PIC
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.section .bss
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.align 3
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.globl __curbrk
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__curbrk: .skip 8
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.type __curbrk,@object
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.size __curbrk,8
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#else
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.comm __curbrk, 8
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#endif
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.text
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LEAF(__brk, 0)
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@ -1,4 +1,4 @@
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/* Copyright (C) 1992 Free Software Foundation, Inc.
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/* Copyright (C) 1992, 1996 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by David Mosberger.
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@ -92,6 +92,7 @@ static struct platform {
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{"EB66", IOSYS_APECS, APECS_DENSE_MEM}, /* LCA same as APECS */
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{"EB66P", IOSYS_APECS, APECS_DENSE_MEM}, /* LCA same as APECS */
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{"Jensen", IOSYS_JENSEN, JENSEN_MEM},
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{"Mikasa", IOSYS_APECS, APECS_DENSE_MEM},
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{"Mustang", IOSYS_APECS, APECS_DENSE_MEM},
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{"Noname", IOSYS_APECS, APECS_DENSE_MEM}, /* LCA same as APECS */
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};
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