[arm] Add support for 64-bit ARM (Aarch64)
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
parent
edea3a434c
commit
17c6f322ee
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@ -84,5 +84,10 @@ PROVIDE_IOAPI_INLINE ( arm, writew );
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PROVIDE_IOAPI_INLINE ( arm, writel );
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PROVIDE_IOAPI_INLINE ( arm, iodelay );
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PROVIDE_IOAPI_INLINE ( arm, mb );
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#ifdef __aarch64__
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PROVIDE_IOAPI_INLINE ( arm, readq );
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PROVIDE_IOAPI_INLINE ( arm, writeq );
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#else
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PROVIDE_IOAPI ( arm, readq, arm32_readq );
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PROVIDE_IOAPI ( arm, writeq, arm32_writeq );
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#endif
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@ -10,12 +10,21 @@
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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/* Hypercall registers */
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#ifdef __aarch64__
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#define XEN_HC "x16"
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#define XEN_REG1 "x0"
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#define XEN_REG2 "x1"
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#define XEN_REG3 "x2"
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#define XEN_REG4 "x3"
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#define XEN_REG5 "x4"
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#else
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#define XEN_HC "r12"
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#define XEN_REG1 "r0"
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#define XEN_REG2 "r1"
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#define XEN_REG3 "r2"
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#define XEN_REG4 "r3"
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#define XEN_REG5 "r4"
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#endif
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/**
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* Issue hypercall with one argument
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@ -43,34 +43,46 @@ IOAPI_INLINE ( arm, bus_to_phys ) ( unsigned long bus_addr ) {
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*
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*/
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#define ARM_READX( _api_func, _type, _insn_suffix ) \
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#define ARM_READX( _api_func, _type, _insn_suffix, _reg_prefix ) \
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static inline __always_inline _type \
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IOAPI_INLINE ( arm, _api_func ) ( volatile _type *io_addr ) { \
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_type data; \
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__asm__ __volatile__ ( "ldr" _insn_suffix " %0, %1" \
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__asm__ __volatile__ ( "ldr" _insn_suffix " %" _reg_prefix "0, %1" \
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: "=r" ( data ) : "Qo" ( *io_addr ) ); \
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return data; \
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}
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ARM_READX ( readb, uint8_t, "b" );
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ARM_READX ( readw, uint16_t, "h" );
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ARM_READX ( readl, uint32_t, "" );
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#ifdef __aarch64__
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ARM_READX ( readb, uint8_t, "b", "w" );
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ARM_READX ( readw, uint16_t, "h", "w" );
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ARM_READX ( readl, uint32_t, "", "w" );
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ARM_READX ( readq, uint64_t, "", "" );
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#else
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ARM_READX ( readb, uint8_t, "b", "" );
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ARM_READX ( readw, uint16_t, "h", "" );
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ARM_READX ( readl, uint32_t, "", "" );
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#endif
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#define ARM_WRITEX( _api_func, _type, _insn_suffix ) \
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#define ARM_WRITEX( _api_func, _type, _insn_suffix, _reg_prefix ) \
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static inline __always_inline void \
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IOAPI_INLINE ( arm, _api_func ) ( _type data, \
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volatile _type *io_addr ) { \
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__asm__ __volatile__ ( "str" _insn_suffix " %0, %1" \
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IOAPI_INLINE ( arm, _api_func ) ( _type data, volatile _type *io_addr ) { \
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__asm__ __volatile__ ( "str" _insn_suffix " %" _reg_prefix "0, %1" \
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: : "r" ( data ), "Qo" ( *io_addr ) ); \
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}
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ARM_WRITEX ( writeb, uint8_t, "b" );
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ARM_WRITEX ( writew, uint16_t, "h" );
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ARM_WRITEX ( writel, uint32_t, "" );
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#ifdef __aarch64__
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ARM_WRITEX ( writeb, uint8_t, "b", "w" );
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ARM_WRITEX ( writew, uint16_t, "h", "w" );
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ARM_WRITEX ( writel, uint32_t, "", "w" );
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ARM_WRITEX ( writeq, uint64_t, "", "" );
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#else
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ARM_WRITEX ( writeb, uint8_t, "b", "" );
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ARM_WRITEX ( writew, uint16_t, "h", "" );
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ARM_WRITEX ( writel, uint32_t, "", "" );
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#endif
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/*
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* Slow down I/O
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*
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*/
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static inline __always_inline void
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IOAPI_INLINE ( arm, iodelay ) ( void ) {
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/* Nothing to do */
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@ -80,10 +92,14 @@ IOAPI_INLINE ( arm, iodelay ) ( void ) {
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* Memory barrier
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*
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*/
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static inline __always_inline void
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IOAPI_INLINE ( arm, mb ) ( void ) {
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#ifdef __aarch64__
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__asm__ __volatile__ ( "dmb sy" );
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#else
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__asm__ __volatile__ ( "dmb" );
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#endif
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}
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#endif /* _IPXE_ARM_IO_H */
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@ -0,0 +1,22 @@
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# ARM64-specific directories containing source files
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#
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SRCDIRS += arch/arm64/core
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# ARM64-specific flags
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#
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CFLAGS += -mabi=lp64 -mlittle-endian -mcmodel=small
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CFLAGS += -fomit-frame-pointer
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ASFLAGS += -mabi=lp64 -EL
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# EFI requires -fshort-wchar, and nothing else currently uses wchar_t
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#
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CFLAGS += -fshort-wchar
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# Include common ARM Makefile
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MAKEDEPS += arch/arm/Makefile
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include arch/arm/Makefile
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# Include platform-specific Makefile
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#
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MAKEDEPS += arch/arm64/Makefile.$(PLATFORM)
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include arch/arm64/Makefile.$(PLATFORM)
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@ -0,0 +1,14 @@
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# -*- makefile -*- : Force emacs to use Makefile mode
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# Specify EFI image builder
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#
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ELF2EFI = $(ELF2EFI64)
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# Specify EFI boot file
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#
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EFI_BOOT_FILE = bootaa64.efi
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# Include generic EFI Makefile
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#
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MAKEDEPS += arch/arm/Makefile.efi
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include arch/arm/Makefile.efi
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@ -0,0 +1,103 @@
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/*
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* Copyright (C) 2016 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <stdint.h>
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#include <string.h>
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#include <ipxe/bigint.h>
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/** @file
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*
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* Big integer support
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*/
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/**
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* Multiply big integers
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*
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* @v multiplicand0 Element 0 of big integer to be multiplied
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* @v multiplier0 Element 0 of big integer to be multiplied
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* @v result0 Element 0 of big integer to hold result
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* @v size Number of elements
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*/
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void bigint_multiply_raw ( const uint64_t *multiplicand0,
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const uint64_t *multiplier0,
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uint64_t *result0, unsigned int size ) {
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const bigint_t ( size ) __attribute__ (( may_alias )) *multiplicand =
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( ( const void * ) multiplicand0 );
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const bigint_t ( size ) __attribute__ (( may_alias )) *multiplier =
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( ( const void * ) multiplier0 );
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bigint_t ( size * 2 ) __attribute__ (( may_alias )) *result =
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( ( void * ) result0 );
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unsigned int i;
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unsigned int j;
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uint64_t multiplicand_element;
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uint64_t multiplier_element;
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uint64_t *result_elements;
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uint64_t discard_low;
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uint64_t discard_high;
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uint64_t discard_temp_low;
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uint64_t discard_temp_high;
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/* Zero result */
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memset ( result, 0, sizeof ( *result ) );
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/* Multiply integers one element at a time */
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for ( i = 0 ; i < size ; i++ ) {
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multiplicand_element = multiplicand->element[i];
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for ( j = 0 ; j < size ; j++ ) {
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multiplier_element = multiplier->element[j];
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result_elements = &result->element[ i + j ];
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/* Perform a single multiply, and add the
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* resulting double-element into the result,
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* carrying as necessary. The carry can
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* never overflow beyond the end of the
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* result, since:
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*
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* a < 2^{n}, b < 2^{n} => ab < 2^{2n}
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*/
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__asm__ __volatile__ ( "mul %1, %6, %7\n\t"
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"umulh %2, %6, %7\n\t"
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"ldp %3, %4, [%0]\n\t"
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"adds %3, %3, %1\n\t"
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"adcs %4, %4, %2\n\t"
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"stp %3, %4, [%0], #16\n\t"
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"bcc 2f\n\t"
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"\n1:\n\t"
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"ldr %3, [%0]\n\t"
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"adcs %3, %3, xzr\n\t"
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"str %3, [%0], #8\n\t"
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"bcs 1b\n\t"
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"\n2:\n\t"
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: "+r" ( result_elements ),
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"=&r" ( discard_low ),
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"=&r" ( discard_high ),
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"=r" ( discard_temp_low ),
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"=r" ( discard_temp_high ),
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"+m" ( *result )
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: "r" ( multiplicand_element ),
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"r" ( multiplier_element )
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: "cc" );
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}
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}
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}
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@ -0,0 +1,56 @@
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL )
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.text
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/* Must match jmp_buf structure layout */
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.struct 0
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env_x19_x20: .quad 0, 0
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env_x21_x22: .quad 0, 0
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env_x23_x24: .quad 0, 0
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env_x25_x26: .quad 0, 0
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env_x27_x28: .quad 0, 0
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env_x29_x30: .quad 0, 0
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env_sp: .quad 0
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.previous
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/*
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* Save stack context for non-local goto
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*/
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.globl setjmp
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.type setjmp, %function
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setjmp:
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/* Store registers */
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stp x19, x20, [x0, #env_x19_x20]
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stp x21, x22, [x0, #env_x21_x22]
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stp x23, x24, [x0, #env_x23_x24]
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stp x25, x26, [x0, #env_x25_x26]
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stp x27, x28, [x0, #env_x27_x28]
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stp x29, x30, [x0, #env_x29_x30]
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mov x16, sp
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str x16, [x0, #env_sp]
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/* Return 0 when returning as setjmp() */
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mov x0, #0
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ret
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.size setjmp, . - setjmp
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/*
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* Non-local jump to a saved stack context
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*/
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.globl longjmp
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.type longjmp, %function
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longjmp:
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/* Restore registers */
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ldp x19, x20, [x0, #env_x19_x20]
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ldp x21, x22, [x0, #env_x21_x22]
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ldp x23, x24, [x0, #env_x23_x24]
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ldp x25, x26, [x0, #env_x25_x26]
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ldp x27, x28, [x0, #env_x27_x28]
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ldp x29, x30, [x0, #env_x29_x30]
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ldr x16, [x0, #env_sp]
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mov sp, x16
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/* Force result to non-zero */
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cmp w1, #0
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csinc w0, w1, w1, ne
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/* Return to setjmp() caller */
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br x30
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.size longjmp, . - longjmp
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@ -0,0 +1,317 @@
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#ifndef _BITS_BIGINT_H
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#define _BITS_BIGINT_H
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/** @file
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*
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* Big integer support
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <stdint.h>
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#include <string.h>
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#include <strings.h>
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/** Element of a big integer */
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typedef uint64_t bigint_element_t;
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/**
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* Initialise big integer
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*
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* @v value0 Element 0 of big integer to initialise
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* @v size Number of elements
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* @v data Raw data
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* @v len Length of raw data
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*/
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static inline __attribute__ (( always_inline )) void
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bigint_init_raw ( uint64_t *value0, unsigned int size,
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const void *data, size_t len ) {
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size_t pad_len = ( sizeof ( bigint_t ( size ) ) - len );
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uint8_t *value_byte = ( ( void * ) value0 );
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const uint8_t *data_byte = ( data + len );
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/* Copy raw data in reverse order, padding with zeros */
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while ( len-- )
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*(value_byte++) = *(--data_byte);
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while ( pad_len-- )
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*(value_byte++) = 0;
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}
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/**
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* Add big integers
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*
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* @v addend0 Element 0 of big integer to add
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* @v value0 Element 0 of big integer to be added to
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* @v size Number of elements
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*/
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static inline __attribute__ (( always_inline )) void
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bigint_add_raw ( const uint64_t *addend0, uint64_t *value0,
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unsigned int size ) {
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bigint_t ( size ) __attribute__ (( may_alias )) *value =
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( ( void * ) value0 );
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uint64_t *discard_addend;
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uint64_t *discard_value;
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uint64_t discard_addend_i;
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uint64_t discard_value_i;
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unsigned int discard_size;
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__asm__ __volatile__ ( "cmn xzr, xzr\n\t" /* clear CF */
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"\n1:\n\t"
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"ldr %3, [%0], #8\n\t"
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"ldr %4, [%1]\n\t"
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"adcs %4, %4, %3\n\t"
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"str %4, [%1], #8\n\t"
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"sub %w2, %w2, #1\n\t"
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"cbnz %w2, 1b\n\t"
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: "=r" ( discard_addend ),
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"=r" ( discard_value ),
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"=r" ( discard_size ),
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"=r" ( discard_addend_i ),
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"=r" ( discard_value_i ),
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"+m" ( *value )
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: "0" ( addend0 ), "1" ( value0 ), "2" ( size )
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: "cc" );
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}
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/**
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* Subtract big integers
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*
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* @v subtrahend0 Element 0 of big integer to subtract
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* @v value0 Element 0 of big integer to be subtracted from
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* @v size Number of elements
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*/
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static inline __attribute__ (( always_inline )) void
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bigint_subtract_raw ( const uint64_t *subtrahend0, uint64_t *value0,
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unsigned int size ) {
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bigint_t ( size ) __attribute__ (( may_alias )) *value =
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( ( void * ) value0 );
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uint64_t *discard_subtrahend;
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uint64_t *discard_value;
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uint64_t discard_subtrahend_i;
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uint64_t discard_value_i;
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unsigned int discard_size;
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__asm__ __volatile__ ( "cmp xzr, xzr\n\t" /* set CF */
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"\n1:\n\t"
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"ldr %3, [%0], #8\n\t"
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"ldr %4, [%1]\n\t"
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"sbcs %4, %4, %3\n\t"
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"str %4, [%1], #8\n\t"
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"sub %w2, %w2, #1\n\t"
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"cbnz %w2, 1b\n\t"
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: "=r" ( discard_subtrahend ),
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"=r" ( discard_value ),
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"=r" ( discard_size ),
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"=r" ( discard_subtrahend_i ),
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"=r" ( discard_value_i ),
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"+m" ( *value )
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: "0" ( subtrahend0 ), "1" ( value0 ),
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"2" ( size )
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: "cc" );
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}
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/**
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* Rotate big integer left
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*
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* @v value0 Element 0 of big integer
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* @v size Number of elements
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*/
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static inline __attribute__ (( always_inline )) void
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bigint_rol_raw ( uint64_t *value0, unsigned int size ) {
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bigint_t ( size ) __attribute__ (( may_alias )) *value =
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( ( void * ) value0 );
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uint64_t *discard_value;
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uint64_t discard_value_i;
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unsigned int discard_size;
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|
||||
__asm__ __volatile__ ( "cmn xzr, xzr\n\t" /* clear CF */
|
||||
"\n1:\n\t"
|
||||
"ldr %2, [%0]\n\t"
|
||||
"adcs %2, %2, %2\n\t"
|
||||
"str %2, [%0], #8\n\t"
|
||||
"sub %w1, %w1, #1\n\t"
|
||||
"cbnz %w1, 1b\n\t"
|
||||
: "=r" ( discard_value ),
|
||||
"=r" ( discard_size ),
|
||||
"=r" ( discard_value_i ),
|
||||
"+m" ( *value )
|
||||
: "0" ( value0 ), "1" ( size )
|
||||
: "cc" );
|
||||
}
|
||||
|
||||
/**
|
||||
* Rotate big integer right
|
||||
*
|
||||
* @v value0 Element 0 of big integer
|
||||
* @v size Number of elements
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) void
|
||||
bigint_ror_raw ( uint64_t *value0, unsigned int size ) {
|
||||
bigint_t ( size ) __attribute__ (( may_alias )) *value =
|
||||
( ( void * ) value0 );
|
||||
uint64_t *discard_value;
|
||||
uint64_t discard_value_i;
|
||||
uint64_t discard_value_j;
|
||||
unsigned int discard_size;
|
||||
|
||||
__asm__ __volatile__ ( "mov %3, #0\n\t"
|
||||
"\n1:\n\t"
|
||||
"sub %w1, %w1, #1\n\t"
|
||||
"ldr %2, [%0, %1, lsl #3]\n\t"
|
||||
"extr %3, %3, %2, #1\n\t"
|
||||
"str %3, [%0, %1, lsl #3]\n\t"
|
||||
"mov %3, %2\n\t"
|
||||
"cbnz %w1, 1b\n\t"
|
||||
: "=r" ( discard_value ),
|
||||
"=r" ( discard_size ),
|
||||
"=r" ( discard_value_i ),
|
||||
"=r" ( discard_value_j ),
|
||||
"+m" ( *value )
|
||||
: "0" ( value0 ), "1" ( size ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* Test if big integer is equal to zero
|
||||
*
|
||||
* @v value0 Element 0 of big integer
|
||||
* @v size Number of elements
|
||||
* @ret is_zero Big integer is equal to zero
|
||||
*/
|
||||
static inline __attribute__ (( always_inline, pure )) int
|
||||
bigint_is_zero_raw ( const uint64_t *value0, unsigned int size ) {
|
||||
const uint64_t *value = value0;
|
||||
uint64_t value_i;
|
||||
|
||||
do {
|
||||
value_i = *(value++);
|
||||
if ( value_i )
|
||||
break;
|
||||
} while ( --size );
|
||||
|
||||
return ( value_i == 0 );
|
||||
}
|
||||
|
||||
/**
|
||||
* Compare big integers
|
||||
*
|
||||
* @v value0 Element 0 of big integer
|
||||
* @v reference0 Element 0 of reference big integer
|
||||
* @v size Number of elements
|
||||
* @ret geq Big integer is greater than or equal to the reference
|
||||
*/
|
||||
static inline __attribute__ (( always_inline, pure )) int
|
||||
bigint_is_geq_raw ( const uint64_t *value0, const uint64_t *reference0,
|
||||
unsigned int size ) {
|
||||
const uint64_t *value = ( value0 + size );
|
||||
const uint64_t *reference = ( reference0 + size );
|
||||
uint64_t value_i;
|
||||
uint64_t reference_i;
|
||||
|
||||
do {
|
||||
value_i = *(--value);
|
||||
reference_i = *(--reference);
|
||||
if ( value_i != reference_i )
|
||||
break;
|
||||
} while ( --size );
|
||||
|
||||
return ( value_i >= reference_i );
|
||||
}
|
||||
|
||||
/**
|
||||
* Test if bit is set in big integer
|
||||
*
|
||||
* @v value0 Element 0 of big integer
|
||||
* @v size Number of elements
|
||||
* @v bit Bit to test
|
||||
* @ret is_set Bit is set
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) int
|
||||
bigint_bit_is_set_raw ( const uint64_t *value0, unsigned int size,
|
||||
unsigned int bit ) {
|
||||
const bigint_t ( size ) __attribute__ (( may_alias )) *value =
|
||||
( ( const void * ) value0 );
|
||||
unsigned int index = ( bit / ( 8 * sizeof ( value->element[0] ) ) );
|
||||
unsigned int subindex = ( bit % ( 8 * sizeof ( value->element[0] ) ) );
|
||||
|
||||
return ( !! ( value->element[index] & ( 1UL << subindex ) ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* Find highest bit set in big integer
|
||||
*
|
||||
* @v value0 Element 0 of big integer
|
||||
* @v size Number of elements
|
||||
* @ret max_bit Highest bit set + 1 (or 0 if no bits set)
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) int
|
||||
bigint_max_set_bit_raw ( const uint64_t *value0, unsigned int size ) {
|
||||
const uint64_t *value = ( value0 + size );
|
||||
int max_bit = ( 8 * sizeof ( bigint_t ( size ) ) );
|
||||
uint64_t value_i;
|
||||
|
||||
do {
|
||||
value_i = *(--value);
|
||||
max_bit -= ( 64 - fls ( value_i ) );
|
||||
if ( value_i )
|
||||
break;
|
||||
} while ( --size );
|
||||
|
||||
return max_bit;
|
||||
}
|
||||
|
||||
/**
|
||||
* Grow big integer
|
||||
*
|
||||
* @v source0 Element 0 of source big integer
|
||||
* @v source_size Number of elements in source big integer
|
||||
* @v dest0 Element 0 of destination big integer
|
||||
* @v dest_size Number of elements in destination big integer
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) void
|
||||
bigint_grow_raw ( const uint64_t *source0, unsigned int source_size,
|
||||
uint64_t *dest0, unsigned int dest_size ) {
|
||||
unsigned int pad_size = ( dest_size - source_size );
|
||||
|
||||
memcpy ( dest0, source0, sizeof ( bigint_t ( source_size ) ) );
|
||||
memset ( ( dest0 + source_size ), 0, sizeof ( bigint_t ( pad_size ) ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* Shrink big integer
|
||||
*
|
||||
* @v source0 Element 0 of source big integer
|
||||
* @v source_size Number of elements in source big integer
|
||||
* @v dest0 Element 0 of destination big integer
|
||||
* @v dest_size Number of elements in destination big integer
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) void
|
||||
bigint_shrink_raw ( const uint64_t *source0, unsigned int source_size __unused,
|
||||
uint64_t *dest0, unsigned int dest_size ) {
|
||||
|
||||
memcpy ( dest0, source0, sizeof ( bigint_t ( dest_size ) ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* Finalise big integer
|
||||
*
|
||||
* @v value0 Element 0 of big integer to finalise
|
||||
* @v size Number of elements
|
||||
* @v out Output buffer
|
||||
* @v len Length of output buffer
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) void
|
||||
bigint_done_raw ( const uint64_t *value0, unsigned int size __unused,
|
||||
void *out, size_t len ) {
|
||||
const uint8_t *value_byte = ( ( const void * ) value0 );
|
||||
uint8_t *out_byte = ( out + len );
|
||||
|
||||
/* Copy raw data in reverse order */
|
||||
while ( len-- )
|
||||
*(--out_byte) = *(value_byte++);
|
||||
}
|
||||
|
||||
extern void bigint_multiply_raw ( const uint64_t *multiplicand0,
|
||||
const uint64_t *multiplier0,
|
||||
uint64_t *value0, unsigned int size );
|
||||
|
||||
#endif /* _BITS_BIGINT_H */
|
||||
|
|
@ -0,0 +1,100 @@
|
|||
#ifndef _BITS_BITOPS_H
|
||||
#define _BITS_BITOPS_H
|
||||
|
||||
/** @file
|
||||
*
|
||||
* ARM bit operations
|
||||
*
|
||||
*/
|
||||
|
||||
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
/**
|
||||
* Test and set bit atomically
|
||||
*
|
||||
* @v bit Bit to set
|
||||
* @v bits Bit field
|
||||
* @ret old Old value of bit (zero or non-zero)
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) int
|
||||
test_and_set_bit ( unsigned int bit, volatile void *bits ) {
|
||||
unsigned int index = ( bit / 64 );
|
||||
unsigned int offset = ( bit % 64 );
|
||||
volatile uint64_t *qword = ( ( ( volatile uint64_t * ) bits ) + index );
|
||||
uint64_t mask = ( 1UL << offset );
|
||||
uint64_t old;
|
||||
uint64_t new;
|
||||
uint32_t flag;
|
||||
|
||||
__asm__ __volatile__ ( "\n1:\n\t"
|
||||
"ldxr %0, %3\n\t"
|
||||
"orr %1, %0, %4\n\t"
|
||||
"stxr %w2, %1, %3\n\t"
|
||||
"tst %w2, %w2\n\t"
|
||||
"bne 1b\n\t"
|
||||
: "=&r" ( old ), "=&r" ( new ), "=&r" ( flag ),
|
||||
"+Q" ( *qword )
|
||||
: "r" ( mask )
|
||||
: "cc" );
|
||||
|
||||
return ( !! ( old & mask ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* Test and clear bit atomically
|
||||
*
|
||||
* @v bit Bit to set
|
||||
* @v bits Bit field
|
||||
* @ret old Old value of bit (zero or non-zero)
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) int
|
||||
test_and_clear_bit ( unsigned int bit, volatile void *bits ) {
|
||||
unsigned int index = ( bit / 64 );
|
||||
unsigned int offset = ( bit % 64 );
|
||||
volatile uint64_t *qword = ( ( ( volatile uint64_t * ) bits ) + index );
|
||||
uint64_t mask = ( 1UL << offset );
|
||||
uint64_t old;
|
||||
uint64_t new;
|
||||
uint32_t flag;
|
||||
|
||||
__asm__ __volatile__ ( "\n1:\n\t"
|
||||
"ldxr %0, %3\n\t"
|
||||
"bic %1, %0, %4\n\t"
|
||||
"stxr %w2, %1, %3\n\t"
|
||||
"tst %w2, %w2\n\t"
|
||||
"bne 1b\n\t"
|
||||
: "=&r" ( old ), "=&r" ( new ), "=&r" ( flag ),
|
||||
"+Q" ( *qword )
|
||||
: "r" ( mask )
|
||||
: "cc" );
|
||||
|
||||
return ( !! ( old & mask ) );
|
||||
}
|
||||
|
||||
/**
|
||||
* Set bit atomically
|
||||
*
|
||||
* @v bit Bit to set
|
||||
* @v bits Bit field
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) void
|
||||
set_bit ( unsigned int bit, volatile void *bits ) {
|
||||
|
||||
test_and_set_bit ( bit, bits );
|
||||
}
|
||||
|
||||
/**
|
||||
* Clear bit atomically
|
||||
*
|
||||
* @v bit Bit to set
|
||||
* @v bits Bit field
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) void
|
||||
clear_bit ( unsigned int bit, volatile void *bits ) {
|
||||
|
||||
test_and_clear_bit ( bit, bits );
|
||||
}
|
||||
|
||||
#endif /* _BITS_BITOPS_H */
|
||||
|
|
@ -0,0 +1,47 @@
|
|||
#ifndef _BITS_BYTESWAP_H
|
||||
#define _BITS_BYTESWAP_H
|
||||
|
||||
/** @file
|
||||
*
|
||||
* Byte-order swapping functions
|
||||
*
|
||||
*/
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
|
||||
|
||||
static inline __attribute__ (( always_inline, const )) uint16_t
|
||||
__bswap_variable_16 ( uint16_t x ) {
|
||||
__asm__ ( "rev16 %0, %1" : "=r" ( x ) : "r" ( x ) );
|
||||
return x;
|
||||
}
|
||||
|
||||
static inline __attribute__ (( always_inline )) void
|
||||
__bswap_16s ( uint16_t *x ) {
|
||||
*x = __bswap_variable_16 ( *x );
|
||||
}
|
||||
|
||||
static inline __attribute__ (( always_inline, const )) uint32_t
|
||||
__bswap_variable_32 ( uint32_t x ) {
|
||||
__asm__ ( "rev32 %0, %1" : "=r" ( x ) : "r" ( x ) );
|
||||
return x;
|
||||
}
|
||||
|
||||
static inline __attribute__ (( always_inline )) void
|
||||
__bswap_32s ( uint32_t *x ) {
|
||||
*x = __bswap_variable_32 ( *x );
|
||||
}
|
||||
|
||||
static inline __attribute__ (( always_inline, const )) uint64_t
|
||||
__bswap_variable_64 ( uint64_t x ) {
|
||||
__asm__ ( "rev %0, %1" : "=r" ( x ) : "r" ( x ) );
|
||||
return x;
|
||||
}
|
||||
|
||||
static inline __attribute__ (( always_inline )) void
|
||||
__bswap_64s ( uint64_t *x ) {
|
||||
*x = __bswap_variable_64 ( *x );
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
#ifndef _BITS_COMPILER_H
|
||||
#define _BITS_COMPILER_H
|
||||
|
||||
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
|
||||
|
||||
/** Dummy relocation type */
|
||||
#define RELOC_TYPE_NONE R_AARCH64_NULL
|
||||
|
||||
#ifndef ASSEMBLY
|
||||
|
||||
#define __asmcall
|
||||
#define __libgcc
|
||||
|
||||
#endif /* ASSEMBLY */
|
||||
|
||||
#endif /*_BITS_COMPILER_H */
|
||||
|
|
@ -0,0 +1,30 @@
|
|||
#ifndef _BITS_PROFILE_H
|
||||
#define _BITS_PROFILE_H
|
||||
|
||||
/** @file
|
||||
*
|
||||
* Profiling
|
||||
*
|
||||
*/
|
||||
|
||||
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
/**
|
||||
* Get profiling timestamp
|
||||
*
|
||||
* @ret timestamp Timestamp
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) uint64_t
|
||||
profile_timestamp ( void ) {
|
||||
uint64_t cycles;
|
||||
|
||||
/* Read cycle counter */
|
||||
__asm__ __volatile__ ( "msr PMCR_EL0, %1\n\t"
|
||||
"mrs %0, PMCCNTR_EL0\n\t"
|
||||
: "=r" ( cycles ) : "r" ( 1 ) );
|
||||
return cycles;
|
||||
}
|
||||
|
||||
#endif /* _BITS_PROFILE_H */
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
#ifndef _BITS_STDINT_H
|
||||
#define _BITS_STDINT_H
|
||||
|
||||
typedef __SIZE_TYPE__ size_t;
|
||||
typedef signed long ssize_t;
|
||||
typedef signed long off_t;
|
||||
|
||||
typedef unsigned char uint8_t;
|
||||
typedef unsigned short uint16_t;
|
||||
typedef unsigned int uint32_t;
|
||||
typedef unsigned long long uint64_t;
|
||||
|
||||
typedef signed char int8_t;
|
||||
typedef signed short int16_t;
|
||||
typedef signed int int32_t;
|
||||
typedef signed long long int64_t;
|
||||
|
||||
typedef unsigned long physaddr_t;
|
||||
typedef unsigned long intptr_t;
|
||||
|
||||
#endif /* _BITS_STDINT_H */
|
||||
|
|
@ -0,0 +1,69 @@
|
|||
#ifndef _BITS_STRINGS_H
|
||||
#define _BITS_STRINGS_H
|
||||
|
||||
/** @file
|
||||
*
|
||||
* String functions
|
||||
*
|
||||
*/
|
||||
|
||||
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
|
||||
|
||||
/**
|
||||
* Find first (i.e. least significant) set bit
|
||||
*
|
||||
* @v value Value
|
||||
* @ret lsb Least significant bit set in value (LSB=1), or zero
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) int __ffsll ( long long value ){
|
||||
unsigned long long bits = value;
|
||||
unsigned long long lsb;
|
||||
unsigned int lz;
|
||||
|
||||
/* Extract least significant set bit */
|
||||
lsb = ( bits & -bits );
|
||||
|
||||
/* Count number of leading zeroes before LSB */
|
||||
__asm__ ( "clz %0, %1" : "=r" ( lz ) : "r" ( lsb ) );
|
||||
|
||||
return ( 64 - lz );
|
||||
}
|
||||
|
||||
/**
|
||||
* Find first (i.e. least significant) set bit
|
||||
*
|
||||
* @v value Value
|
||||
* @ret lsb Least significant bit set in value (LSB=1), or zero
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) int __ffsl ( long value ) {
|
||||
|
||||
return __ffsll ( value );
|
||||
}
|
||||
|
||||
/**
|
||||
* Find last (i.e. most significant) set bit
|
||||
*
|
||||
* @v value Value
|
||||
* @ret msb Most significant bit set in value (LSB=1), or zero
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) int __flsll ( long long value ){
|
||||
unsigned int lz;
|
||||
|
||||
/* Count number of leading zeroes */
|
||||
__asm__ ( "clz %0, %1" : "=r" ( lz ) : "r" ( value ) );
|
||||
|
||||
return ( 64 - lz );
|
||||
}
|
||||
|
||||
/**
|
||||
* Find last (i.e. most significant) set bit
|
||||
*
|
||||
* @v value Value
|
||||
* @ret msb Most significant bit set in value (LSB=1), or zero
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) int __flsl ( long value ) {
|
||||
|
||||
return __flsll ( value );
|
||||
}
|
||||
|
||||
#endif /* _BITS_STRINGS_H */
|
||||
|
|
@ -0,0 +1,46 @@
|
|||
/*
|
||||
* Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 of the
|
||||
* License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||
* 02110-1301, USA.
|
||||
*
|
||||
* You can also choose to distribute this program under the terms of
|
||||
* the Unmodified Binary Distribution Licence (as given in the file
|
||||
* COPYING.UBDL), provided that you have satisfied its requirements.
|
||||
*/
|
||||
|
||||
#ifndef _DHCP_ARCH_H
|
||||
#define _DHCP_ARCH_H
|
||||
|
||||
/** @file
|
||||
*
|
||||
* Architecture-specific DHCP options
|
||||
*/
|
||||
|
||||
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
|
||||
|
||||
#include <ipxe/dhcp.h>
|
||||
|
||||
#define DHCP_ARCH_VENDOR_CLASS_ID \
|
||||
DHCP_STRING ( 'P', 'X', 'E', 'C', 'l', 'i', 'e', 'n', 't', ':', \
|
||||
'A', 'r', 'c', 'h', ':', '0', '0', '0', '0', '7', ':', \
|
||||
'U', 'N', 'D', 'I', ':', '0', '0', '3', '0', '1', '0' )
|
||||
|
||||
#define DHCP_ARCH_CLIENT_ARCHITECTURE \
|
||||
DHCP_WORD ( DHCP_CLIENT_ARCHITECTURE_EFI )
|
||||
|
||||
#define DHCP_ARCH_CLIENT_NDI DHCP_OPTION ( 1 /* UNDI */ , 3, 10 /* v3.10 */ )
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,45 @@
|
|||
#ifndef GDBMACH_H
|
||||
#define GDBMACH_H
|
||||
|
||||
/** @file
|
||||
*
|
||||
* GDB architecture specifics
|
||||
*
|
||||
* This file declares functions for manipulating the machine state and
|
||||
* debugging context.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
typedef unsigned long gdbreg_t;
|
||||
|
||||
/* Register snapshot */
|
||||
enum {
|
||||
/* Not yet implemented */
|
||||
GDBMACH_NREGS,
|
||||
};
|
||||
|
||||
#define GDBMACH_SIZEOF_REGS ( GDBMACH_NREGS * sizeof ( gdbreg_t ) )
|
||||
|
||||
static inline void gdbmach_set_pc ( gdbreg_t *regs, gdbreg_t pc ) {
|
||||
/* Not yet implemented */
|
||||
( void ) regs;
|
||||
( void ) pc;
|
||||
}
|
||||
|
||||
static inline void gdbmach_set_single_step ( gdbreg_t *regs, int step ) {
|
||||
/* Not yet implemented */
|
||||
( void ) regs;
|
||||
( void ) step;
|
||||
}
|
||||
|
||||
static inline void gdbmach_breakpoint ( void ) {
|
||||
/* Not yet implemented */
|
||||
}
|
||||
|
||||
extern int gdbmach_set_breakpoint ( int type, unsigned long addr, size_t len,
|
||||
int enable );
|
||||
extern void gdbmach_init ( void );
|
||||
|
||||
#endif /* GDBMACH_H */
|
||||
|
|
@ -0,0 +1,59 @@
|
|||
#ifndef LIMITS_H
|
||||
#define LIMITS_H 1
|
||||
|
||||
/* Number of bits in a `char' */
|
||||
#define CHAR_BIT 8
|
||||
|
||||
/* Minimum and maximum values a `signed char' can hold */
|
||||
#define SCHAR_MIN (-128)
|
||||
#define SCHAR_MAX 127
|
||||
|
||||
/* Maximum value an `unsigned char' can hold. (Minimum is 0.) */
|
||||
#define UCHAR_MAX 255
|
||||
|
||||
/* Minimum and maximum values a `char' can hold */
|
||||
#define CHAR_MIN SCHAR_MIN
|
||||
#define CHAR_MAX SCHAR_MAX
|
||||
|
||||
/* Minimum and maximum values a `signed short int' can hold */
|
||||
#define SHRT_MIN (-32768)
|
||||
#define SHRT_MAX 32767
|
||||
|
||||
/* Maximum value an `unsigned short' can hold. (Minimum is 0.) */
|
||||
#define USHRT_MAX 65535
|
||||
|
||||
|
||||
/* Minimum and maximum values a `signed int' can hold */
|
||||
#define INT_MIN (-INT_MAX - 1)
|
||||
#define INT_MAX 2147483647
|
||||
|
||||
/* Maximum value an `unsigned int' can hold. (Minimum is 0.) */
|
||||
#define UINT_MAX 4294967295U
|
||||
|
||||
|
||||
/* Minimum and maximum values a `signed int' can hold */
|
||||
#define INT_MAX 2147483647
|
||||
#define INT_MIN (-INT_MAX - 1)
|
||||
|
||||
|
||||
/* Maximum value an `unsigned int' can hold. (Minimum is 0.) */
|
||||
#define UINT_MAX 4294967295U
|
||||
|
||||
|
||||
/* Minimum and maximum values a `signed long' can hold */
|
||||
#define LONG_MAX 9223372036854775807L
|
||||
#define LONG_MIN (-LONG_MAX - 1L)
|
||||
|
||||
/* Maximum value an `unsigned long' can hold. (Minimum is 0.) */
|
||||
#define ULONG_MAX 18446744073709551615UL
|
||||
|
||||
/* Minimum and maximum values a `signed long long' can hold */
|
||||
#define LLONG_MAX 9223372036854775807LL
|
||||
#define LLONG_MIN (-LONG_MAX - 1LL)
|
||||
|
||||
|
||||
/* Maximum value an `unsigned long long' can hold. (Minimum is 0.) */
|
||||
#define ULLONG_MAX 18446744073709551615ULL
|
||||
|
||||
|
||||
#endif /* LIMITS_H */
|
||||
|
|
@ -0,0 +1,44 @@
|
|||
#ifndef _SETJMP_H
|
||||
#define _SETJMP_H
|
||||
|
||||
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
/** A jump buffer */
|
||||
typedef struct {
|
||||
/** Saved x19 */
|
||||
uint64_t x19;
|
||||
/** Saved x20 */
|
||||
uint64_t x20;
|
||||
/** Saved x21 */
|
||||
uint64_t x21;
|
||||
/** Saved x22 */
|
||||
uint64_t x22;
|
||||
/** Saved x23 */
|
||||
uint64_t x23;
|
||||
/** Saved x24 */
|
||||
uint64_t x24;
|
||||
/** Saved x25 */
|
||||
uint64_t x25;
|
||||
/** Saved x26 */
|
||||
uint64_t x26;
|
||||
/** Saved x27 */
|
||||
uint64_t x27;
|
||||
/** Saved x28 */
|
||||
uint64_t x28;
|
||||
/** Saved frame pointer (x29) */
|
||||
uint64_t x29;
|
||||
/** Saved link register (x30) */
|
||||
uint64_t x30;
|
||||
/** Saved stack pointer (x31) */
|
||||
uint64_t sp;
|
||||
} jmp_buf[1];
|
||||
|
||||
extern int __asmcall __attribute__ (( returns_twice ))
|
||||
setjmp ( jmp_buf env );
|
||||
|
||||
extern void __asmcall __attribute__ (( noreturn ))
|
||||
longjmp ( jmp_buf env, int val );
|
||||
|
||||
#endif /* _SETJMP_H */
|
||||
|
|
@ -40,7 +40,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
|
|||
#define CPUID_CMD /* x86 CPU feature detection command */
|
||||
#endif
|
||||
|
||||
#if defined ( __arm__ )
|
||||
#if defined ( __arm__ ) || defined ( __aarch64__ )
|
||||
#define IOAPI_ARM
|
||||
#define NAP_EFIARM
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -85,6 +85,7 @@ static void read_pe_info ( void *pe, uint16_t *machine,
|
|||
*subsystem = nt->nt32.OptionalHeader.Subsystem;
|
||||
break;
|
||||
case EFI_IMAGE_MACHINE_X64:
|
||||
case EFI_IMAGE_MACHINE_AARCH64:
|
||||
*subsystem = nt->nt64.OptionalHeader.Subsystem;
|
||||
break;
|
||||
default:
|
||||
|
|
|
|||
|
|
@ -72,6 +72,11 @@
|
|||
|
||||
#define ELF_MREL( mach, type ) ( (mach) | ( (type) << 16 ) )
|
||||
|
||||
/* Seems to be missing from elf.h */
|
||||
#ifndef R_AARCH64_NULL
|
||||
#define R_AARCH64_NULL 256
|
||||
#endif
|
||||
|
||||
#define EFI_FILE_ALIGN 0x20
|
||||
|
||||
struct elf_file {
|
||||
|
|
@ -403,6 +408,9 @@ static void set_machine ( struct elf_file *elf, struct pe_header *pe_header ) {
|
|||
case EM_ARM:
|
||||
machine = EFI_IMAGE_MACHINE_ARMTHUMB_MIXED;
|
||||
break;
|
||||
case EM_AARCH64:
|
||||
machine = EFI_IMAGE_MACHINE_AARCH64;
|
||||
break;
|
||||
default:
|
||||
eprintf ( "Unknown ELF architecture %d\n", ehdr->e_machine );
|
||||
exit ( 1 );
|
||||
|
|
@ -582,6 +590,8 @@ static void process_reloc ( struct elf_file *elf, const Elf_Shdr *shdr,
|
|||
case ELF_MREL ( EM_386, R_386_NONE ) :
|
||||
case ELF_MREL ( EM_ARM, R_ARM_NONE ) :
|
||||
case ELF_MREL ( EM_X86_64, R_X86_64_NONE ) :
|
||||
case ELF_MREL ( EM_AARCH64, R_AARCH64_NONE ) :
|
||||
case ELF_MREL ( EM_AARCH64, R_AARCH64_NULL ) :
|
||||
/* Ignore dummy relocations used by REQUIRE_SYMBOL() */
|
||||
break;
|
||||
case ELF_MREL ( EM_386, R_386_32 ) :
|
||||
|
|
@ -590,6 +600,7 @@ static void process_reloc ( struct elf_file *elf, const Elf_Shdr *shdr,
|
|||
generate_pe_reloc ( pe_reltab, offset, 4 );
|
||||
break;
|
||||
case ELF_MREL ( EM_X86_64, R_X86_64_64 ) :
|
||||
case ELF_MREL ( EM_AARCH64, R_AARCH64_ABS64 ) :
|
||||
/* Generate an 8-byte PE relocation */
|
||||
generate_pe_reloc ( pe_reltab, offset, 8 );
|
||||
break;
|
||||
|
|
@ -598,6 +609,15 @@ static void process_reloc ( struct elf_file *elf, const Elf_Shdr *shdr,
|
|||
case ELF_MREL ( EM_ARM, R_ARM_THM_PC22 ) :
|
||||
case ELF_MREL ( EM_ARM, R_ARM_THM_JUMP24 ) :
|
||||
case ELF_MREL ( EM_X86_64, R_X86_64_PC32 ) :
|
||||
case ELF_MREL ( EM_AARCH64, R_AARCH64_CALL26 ) :
|
||||
case ELF_MREL ( EM_AARCH64, R_AARCH64_JUMP26 ) :
|
||||
case ELF_MREL ( EM_AARCH64, R_AARCH64_ADR_PREL_LO21 ) :
|
||||
case ELF_MREL ( EM_AARCH64, R_AARCH64_ADR_PREL_PG_HI21 ) :
|
||||
case ELF_MREL ( EM_AARCH64, R_AARCH64_ADD_ABS_LO12_NC ) :
|
||||
case ELF_MREL ( EM_AARCH64, R_AARCH64_LDST8_ABS_LO12_NC ) :
|
||||
case ELF_MREL ( EM_AARCH64, R_AARCH64_LDST16_ABS_LO12_NC ) :
|
||||
case ELF_MREL ( EM_AARCH64, R_AARCH64_LDST32_ABS_LO12_NC ) :
|
||||
case ELF_MREL ( EM_AARCH64, R_AARCH64_LDST64_ABS_LO12_NC ) :
|
||||
/* Skip PC-relative relocations; all relative
|
||||
* offsets remain unaltered when the object is
|
||||
* loaded.
|
||||
|
|
|
|||
Reference in New Issue