ELF adaption.
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thomas
parent
f433d91346
commit
b2990af499
@ -1,4 +1,4 @@
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# $NetBSD: Makefile,v 1.8 1999/03/15 07:46:11 leo Exp $
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# $NetBSD: Makefile,v 1.9 2001/09/08 11:21:02 thomas Exp $
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LIB= sa
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@ -7,7 +7,7 @@ MKPROFILE=no
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OBJMACHINE=
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CPPFLAGS+= ${DEFS} ${INCL}
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CFLAGS+= -fomit-frame-pointer -Wall
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CFLAGS+= -fomit-frame-pointer -Wall -fno-function-cse -fstrength-reduce
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NO_NET=
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DEFS= -D_STANDALONE
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@ -18,7 +18,7 @@ INCL= -I- -I${S_MACHSA} -I${S_KERN} -I${S_SA} -I${S}
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#
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# machine dependant routines
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SRCS= consio.s diskio.c
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SRCS= consio.S diskio.c
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# from lib/libkern
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SRCS+= ashrdi3.c bzero.c strcmp.c strlen.c
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@ -1,4 +1,4 @@
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/* $NetBSD: consio.s,v 1.1.1.1 1996/02/29 11:36:12 leo Exp $ */
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/* $NetBSD: consio.S,v 1.1 2001/09/08 11:21:02 thomas Exp $ */
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/*
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* Copyright (c) 1995 Waldi Ravens.
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@ -30,34 +30,30 @@
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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.globl _getchar | int getchar (void);
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.text
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.even
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_getchar:
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movml d2/a2,sp@-
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movw #2,sp@- | BIOS device 2 => console (VT52)
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movw #2,sp@- | BIOS opcode 2 => Bconin
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#include <machine/asm.h>
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ENTRY_NOPROFILE(getchar) | int getchar (void);
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movml %d2/%a2,%sp@-
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movw #2,%sp@- | BIOS device 2 => console (VT52)
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movw #2,%sp@- | BIOS opcode 2 => Bconin
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trap #13 | => char in d0.b
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addql #4,sp
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andl #0xff,d0
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movml sp@+,d2/a2
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addql #4,%sp
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andl #0xff,%d0
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movml %sp@+,%d2/%a2
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rts
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.globl _putchar | void putchar (int c);
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.text
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.even
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_putchar:
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movl sp@(4),d0
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cmpw #10,d0 | linefeed?
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ENTRY_NOPROFILE(putchar) | void putchar (int c);
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movl %sp@(4),%d0
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cmpw #10,%d0 | linefeed?
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bnes 0f
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movq #13,d0 | yes, put CR and LF.
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movq #13,%d0 | yes, put CR and LF.
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bsrs 0f
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movq #10,d0
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0: movml d2/a2,sp@-
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movw d0,sp@- | character
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movw #2,sp@- | BIOS device 2 => console (VT52)
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movw #3,sp@- | BIOS opcode 3 => Bconout
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movq #10,%d0
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0: movml %d2/%a2,%sp@-
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movw %d0,%sp@- | character
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movw #2,%sp@- | BIOS device 2 => console (VT52)
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movw #3,%sp@- | BIOS opcode 3 => Bconout
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trap #13 | => none
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addql #6,sp
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movml sp@+,d2/a2
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addql #6,%sp
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movml %sp@+,%d2/%a2
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rts
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@ -1,4 +1,4 @@
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/* $NetBSD: bsdstart.s,v 1.5 1997/12/04 07:39:05 leo Exp $ */
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/* $NetBSD: bsdstart.s,v 1.6 2001/09/08 11:22:26 thomas Exp $ */
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/*
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* Copyright (c) 1995 L. Weppelman
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@ -36,12 +36,11 @@
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*
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* bsd_startup(struct kparamb *)
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*/
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.text
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.even
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.globl _bsd_startup
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_bsd_startup:
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movw #0x2700,sr
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#include <machine/asm.h>
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ENTRY_NOPROFILE(bsd_startup)
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movw #0x2700,%sr
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| the BSD kernel wants values into the following registers:
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| d0: ttmem-size
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@ -54,24 +53,24 @@ _bsd_startup:
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| a1: end of symbols (esym)
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| All other registers zeroed for possible future requirements.
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movl sp@(4),a3 | a3 points to parameter block
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movl %sp@(4),%a3 | a3 points to parameter block
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#ifdef TOSTOOLS
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lea _bsd_startup,sp | make sure we have a good stack ***
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lea _ASM_LABEL(bsd_startup),%sp | make sure we have a good stack ***
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#endif
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movl a3@,a0 | loaded kernel
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movl a3@(8),d0 | kernel entry point
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addl a0,d0 | added makes our absolute entry point
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movl d0,sp@- | push entry point ***
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movl a3@(12),d1 | stmem-size
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movl a3@(16),d0 | ttmem-size
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movl a3@(20),d2 | bootflags
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movl a3@(24),d3 | boothowto
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movl a3@(4),d4 | length of loaded kernel
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movl a3@(28),d5 | start of fastram
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movl a3@(32),a1 | end of symbols
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subl a5,a5 | target, load to 0
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movl d2,d6
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andb #0x50,d6 | Is this an 68040/68060?
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movl %a3@,%a0 | loaded kernel
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movl %a3@(8),%d0 | kernel entry point
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addl %a0,%d0 | added makes our absolute entry point
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movl %d0,%sp@- | push entry point ***
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movl %a3@(12),%d1 | stmem-size
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movl %a3@(16),%d0 | ttmem-size
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movl %a3@(20),%d2 | bootflags
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movl %a3@(24),%d3 | boothowto
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movl %a3@(4),%d4 | length of loaded kernel
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movl %a3@(28),%d5 | start of fastram
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movl %a3@(32),%a1 | end of symbols
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subl %a5,%a5 | target, load to 0
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movl %d2,%d6
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andb #0x50,%d6 | Is this an 68040/68060?
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beqs 0f
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| Turn off 68040 type MMU
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@ -85,25 +84,25 @@ _bsd_startup:
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.word 0xf4f8 | cpusha bc - push and inval caches
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bras 1f
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0: lea pc@(zero),a3
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pmove a3@,tc | Turn off MMU
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pmove a3@(-4),crp | crp = nullrp
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pmove a3@(-4),srp | srp = nullrp
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btst #3,d2 | Is this an 68030?
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0: lea %pc@(zero),%a3
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pmove %a3@,%tc | Turn off MMU
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pmove %a3@(-4),%crp | crp = nullrp
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pmove %a3@(-4),%srp | srp = nullrp
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btst #3,%d2 | Is this an 68030?
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beqs 1f
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| Turn off 68030 TT registers
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.word 0xf013,0x0800 | pmove a3@,tt0
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.word 0xf013,0x0c00 | pmove a3@,tt1
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1: movq #0,d6 | would have known contents
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movc d6,cacr | turn off the caches
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movl d6,d7
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movl d6,a2
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movl d6,a3
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movl d6,a4
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movl d6,a5
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movl d6,a6
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1: movq #0,%d6 | would have known contents
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movc %d6,%cacr | turn off the caches
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movl %d6,%d7
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movl %d6,%a2
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movl %d6,%a3
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movl %d6,%a4
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movl %d6,%a5
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movl %d6,%a6
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rts | enter kernel at address on stack ***
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| A do-nothing MMU root pointer (includes the following long as well)
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