diff options
author | kevans <kevans@FreeBSD.org> | 2018-02-12 01:08:44 +0000 |
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committer | kevans <kevans@FreeBSD.org> | 2018-02-12 01:08:44 +0000 |
commit | 7d97ee5b28b409c00bfaf12daf5ab497a6038b9d (patch) | |
tree | 245306b754606bcf49c0ff17b131b58609b6c7a6 /stand/pc98/btx/lib | |
parent | 43b278e1b66cf4de337a17034087ea785031bd6f (diff) | |
download | FreeBSD-src-7d97ee5b28b409c00bfaf12daf5ab497a6038b9d.zip FreeBSD-src-7d97ee5b28b409c00bfaf12daf5ab497a6038b9d.tar.gz |
MFC r325834,r325997,326502: Move sys/boot to stand/
This is effectively a direct commit to stable/11, due to differences between
stable/11 and head. Changes to DTS in sys/boot/fdt/dts were often
accompanied by kernel changes. Many of these were also risc-v updates that
likely had many more dependencies to MFC.
Because of this, sys/boot/fdt/dts remains as-is while everything else in
sys/boot relocates to stand/.
r325834: Move sys/boot to stand. Fix all references to new location
r325997: Remove empty directories.
r326502: Document the sys/boot -> stand move in hier.7 and the top-level README.
Diffstat (limited to 'stand/pc98/btx/lib')
-rw-r--r-- | stand/pc98/btx/lib/Makefile | 10 | ||||
-rw-r--r-- | stand/pc98/btx/lib/btxcsu.S | 49 | ||||
-rw-r--r-- | stand/pc98/btx/lib/btxsys.s | 40 | ||||
-rw-r--r-- | stand/pc98/btx/lib/btxv86.h | 67 | ||||
-rw-r--r-- | stand/pc98/btx/lib/btxv86.s | 85 |
5 files changed, 251 insertions, 0 deletions
diff --git a/stand/pc98/btx/lib/Makefile b/stand/pc98/btx/lib/Makefile new file mode 100644 index 0000000..e5876bc --- /dev/null +++ b/stand/pc98/btx/lib/Makefile @@ -0,0 +1,10 @@ +# $FreeBSD$ + +PROG= crt0.o +INTERNALPROG= +MAN= +SRCS= btxcsu.S btxsys.s btxv86.s +CFLAGS+=-I${.CURDIR}/../../../i386/common +LDFLAGS=-Wl,-r + +.include <bsd.prog.mk> diff --git a/stand/pc98/btx/lib/btxcsu.S b/stand/pc98/btx/lib/btxcsu.S new file mode 100644 index 0000000..c46f809 --- /dev/null +++ b/stand/pc98/btx/lib/btxcsu.S @@ -0,0 +1,49 @@ +# +# Copyright (c) 1998 Robert Nordier +# All rights reserved. +# +# Redistribution and use in source and binary forms are freely +# permitted provided that the above copyright notice and this +# paragraph and the following disclaimer are duplicated in all +# such forms. +# +# This software is provided "AS IS" and without any express or +# implied warranties, including, without limitation, the implied +# warranties of merchantability and fitness for a particular +# purpose. +# + +# $FreeBSD$ + +#include <bootargs.h> + +# +# BTX C startup code (ELF). +# + +# +# Globals. +# + .global _start +# +# Client entry point. +# +_start: cld + pushl %eax + movl $_edata,%edi + movl $_end,%ecx + subl %edi, %ecx + xorb %al, %al + rep + stosb + popl __base + movl %esp,%eax # Set + addl $ARGADJ,%eax # argument + movl %eax,__args # pointer + call main # Invoke client main() + call exit # Invoke client exit() +# +# Data. +# + .comm __base,4 # Client base address + .comm __args,4 # Client arguments diff --git a/stand/pc98/btx/lib/btxsys.s b/stand/pc98/btx/lib/btxsys.s new file mode 100644 index 0000000..9c77b42 --- /dev/null +++ b/stand/pc98/btx/lib/btxsys.s @@ -0,0 +1,40 @@ +# +# Copyright (c) 1998 Robert Nordier +# All rights reserved. +# +# Redistribution and use in source and binary forms are freely +# permitted provided that the above copyright notice and this +# paragraph and the following disclaimer are duplicated in all +# such forms. +# +# This software is provided "AS IS" and without any express or +# implied warranties, including, without limitation, the implied +# warranties of merchantability and fitness for a particular +# purpose. +# + +# $FreeBSD$ + +# +# BTX system calls. +# + +# +# Globals. +# + .global __exit + .global __exec +# +# Constants. +# + .set INT_SYS,0x30 # Interrupt number +# +# System call: exit +# +__exit: xorl %eax,%eax # BTX system + int $INT_SYS # call 0x0 +# +# System call: exec +# +__exec: movl $0x1,%eax # BTX system + int $INT_SYS # call 0x1 diff --git a/stand/pc98/btx/lib/btxv86.h b/stand/pc98/btx/lib/btxv86.h new file mode 100644 index 0000000..27f6b34 --- /dev/null +++ b/stand/pc98/btx/lib/btxv86.h @@ -0,0 +1,67 @@ +/* + * Copyright (c) 1998 Robert Nordier + * All rights reserved. + * + * Redistribution and use in source and binary forms are freely + * permitted provided that the above copyright notice and this + * paragraph and the following disclaimer are duplicated in all + * such forms. + * + * This software is provided "AS IS" and without any express or + * implied warranties, including, without limitation, the implied + * warranties of merchantability and fitness for a particular + * purpose. + */ + +/* + * $FreeBSD$ + */ + +#ifndef _BTXV86_H_ +#define _BTXV86_H_ + +#include <sys/types.h> +#include <machine/psl.h> + +#define V86_ADDR 0x10000 /* Segment:offset address */ +#define V86_CALLF 0x20000 /* Emulate far call */ +#define V86_FLAGS 0x40000 /* Return flags */ + +struct __v86 { + uint32_t ctl; /* Control flags */ + uint32_t addr; /* Interrupt number or address */ + uint32_t es; /* V86 ES register */ + uint32_t ds; /* V86 DS register */ + uint32_t fs; /* V86 FS register */ + uint32_t gs; /* V86 GS register */ + uint32_t eax; /* V86 EAX register */ + uint32_t ecx; /* V86 ECX register */ + uint32_t edx; /* V86 EDX register */ + uint32_t ebx; /* V86 EBX register */ + uint32_t efl; /* V86 eflags register */ + uint32_t ebp; /* V86 EBP register */ + uint32_t esi; /* V86 ESI register */ + uint32_t edi; /* V86 EDI register */ +}; + +extern struct __v86 __v86; /* V86 interface structure */ +void __v86int(void); + +#define v86 __v86 +#define v86int __v86int + +extern u_int32_t __base; +extern u_int32_t __args; + +#define PTOV(pa) ((caddr_t)(pa) - __base) +#define VTOP(va) ((vm_offset_t)(va) + __base) +#define VTOPSEG(va) (u_int16_t)(VTOP((caddr_t)va) >> 4) +#define VTOPOFF(va) (u_int16_t)(VTOP((caddr_t)va) & 0xf) + +#define V86_CY(x) ((x) & PSL_C) +#define V86_ZR(x) ((x) & PSL_Z) + +void __exit(int) __attribute__((__noreturn__)); +void __exec(caddr_t, ...); + +#endif /* !_BTXV86_H_ */ diff --git a/stand/pc98/btx/lib/btxv86.s b/stand/pc98/btx/lib/btxv86.s new file mode 100644 index 0000000..0d7d111 --- /dev/null +++ b/stand/pc98/btx/lib/btxv86.s @@ -0,0 +1,85 @@ +# +# Copyright (c) 1998 Robert Nordier +# All rights reserved. +# +# Redistribution and use in source and binary forms are freely +# permitted provided that the above copyright notice and this +# paragraph and the following disclaimer are duplicated in all +# such forms. +# +# This software is provided "AS IS" and without any express or +# implied warranties, including, without limitation, the implied +# warranties of merchantability and fitness for a particular +# purpose. +# + +# $FreeBSD$ + +# +# BTX V86 interface. +# + +# +# Globals. +# + .global __v86int +# +# Fields in V86 interface structure. +# + .set V86_CTL,0x0 # Control flags + .set V86_ADDR,0x4 # Int number/address + .set V86_ES,0x8 # V86 ES + .set V86_DS,0xc # V86 DS + .set V86_FS,0x10 # V86 FS + .set V86_GS,0x14 # V86 GS + .set V86_EAX,0x18 # V86 EAX + .set V86_ECX,0x1c # V86 ECX + .set V86_EDX,0x20 # V86 EDX + .set V86_EBX,0x24 # V86 EBX + .set V86_EFL,0x28 # V86 eflags + .set V86_EBP,0x2c # V86 EBP + .set V86_ESI,0x30 # V86 ESI + .set V86_EDI,0x34 # V86 EDI +# +# Other constants. +# + .set INT_V86,0x31 # Interrupt number + .set SIZ_V86,0x38 # Size of V86 structure +# +# V86 interface function. +# +__v86int: popl __v86ret # Save return address + pushl $__v86 # Push pointer + call __v86_swap # Load V86 registers + int $INT_V86 # To BTX + call __v86_swap # Load user registers + addl $0x4,%esp # Discard pointer + pushl __v86ret # Restore return address + ret # To user +# +# Swap V86 and user registers. +# +__v86_swap: xchgl %ebp,0x4(%esp,1) # Swap pointer, EBP + xchgl %eax,V86_EAX(%ebp) # Swap EAX + xchgl %ecx,V86_ECX(%ebp) # Swap ECX + xchgl %edx,V86_EDX(%ebp) # Swap EDX + xchgl %ebx,V86_EBX(%ebp) # Swap EBX + pushl %eax # Save + pushf # Put eflags + popl %eax # in EAX + xchgl %eax,V86_EFL(%ebp) # Swap + pushl %eax # Put EAX + popf # in eflags + movl 0x8(%esp,1),%eax # Load EBP + xchgl %eax,V86_EBP(%ebp) # Swap + movl %eax,0x8(%esp,1) # Save EBP + popl %eax # Restore + xchgl %esi,V86_ESI(%ebp) # Swap ESI + xchgl %edi,V86_EDI(%ebp) # Swap EDI + xchgl %ebp,0x4(%esp,1) # Swap pointer, EBP + ret # To caller +# +# V86 interface structure. +# + .comm __v86,SIZ_V86 + .comm __v86ret,4 |