diff options
Diffstat (limited to 'qemu/roms/ipxe/src/arch/x86_64/include/bits')
10 files changed, 122 insertions, 14 deletions
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/byteswap.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/byteswap.h index 2e472d98a..d8c5098ef 100644 --- a/qemu/roms/ipxe/src/arch/x86_64/include/bits/byteswap.h +++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/byteswap.h @@ -9,7 +9,7 @@ #include <stdint.h> -FILE_LICENCE ( GPL2_OR_LATER ); +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); static inline __attribute__ (( always_inline, const )) uint16_t __bswap_variable_16 ( uint16_t x ) { diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/compiler.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/compiler.h index 51a7eaae2..f70b2e517 100644 --- a/qemu/roms/ipxe/src/arch/x86_64/include/bits/compiler.h +++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/compiler.h @@ -1,6 +1,9 @@ #ifndef _BITS_COMPILER_H #define _BITS_COMPILER_H +/** Dummy relocation type */ +#define RELOC_TYPE_NONE R_X86_64_NONE + #ifndef ASSEMBLY /** Declare a function with standard calling conventions */ diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/endian.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/endian.h deleted file mode 100644 index 413e702db..000000000 --- a/qemu/roms/ipxe/src/arch/x86_64/include/bits/endian.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef ETHERBOOT_BITS_ENDIAN_H -#define ETHERBOOT_BITS_ENDIAN_H - -#define __BYTE_ORDER __LITTLE_ENDIAN - -#endif /* ETHERBOOT_BITS_ENDIAN_H */ diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/entropy.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/entropy.h index 9c64c833b..a9b3bc10e 100644 --- a/qemu/roms/ipxe/src/arch/x86_64/include/bits/entropy.h +++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/entropy.h @@ -7,6 +7,6 @@ * */ -FILE_LICENCE ( GPL2_OR_LATER ); +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #endif /* _BITS_ENTROPY_H */ diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/hyperv.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/hyperv.h new file mode 100644 index 000000000..845c182f7 --- /dev/null +++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/hyperv.h @@ -0,0 +1,75 @@ +#ifndef _BITS_HYPERV_H +#define _BITS_HYPERV_H + +/** @file + * + * Hyper-V interface + * + */ + +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); + +#include <stddef.h> +#include <stdint.h> +#include <ipxe/io.h> + +/** + * Issue hypercall + * + * @v hv Hyper-V hypervisor + * @v code Call code + * @v in Input parameters + * @v out Output parameters + * @ret status Status code + */ +static inline __attribute__ (( always_inline )) int +hv_call ( struct hv_hypervisor *hv, unsigned int code, const void *in, + void *out ) { + void *hypercall = hv->hypercall; + register uint64_t rcx asm ( "rcx" ); + register uint64_t rdx asm ( "rdx" ); + register uint64_t r8 asm ( "r8" ); + uint64_t in_phys; + uint64_t out_phys; + uint16_t result; + + in_phys = ( ( __builtin_constant_p ( in ) && ( in == NULL ) ) + ? 0 : virt_to_phys ( in ) ); + out_phys = ( ( __builtin_constant_p ( out ) && ( out == NULL ) ) + ? 0 : virt_to_phys ( out ) ); + rcx = code; + rdx = in_phys; + r8 = out_phys; + __asm__ __volatile__ ( "call *%4" + : "=a" ( result ), "+r" ( rcx ), "+r" ( rdx ), + "+r" ( r8 ) + : "m" ( hypercall ) + : "r9", "r10", "r11", "xmm0", "xmm1", "xmm2", + "xmm3", "xmm4", "xmm5" ); + return result; +} + +/** + * Set bit atomically + * + * @v bits Bit field + * @v bit Bit to set + */ +static inline __attribute__ (( always_inline )) void +hv_set_bit ( void *bits, unsigned int bit ) { + struct { + uint64_t qword[ ( bit / 64 ) + 1 ]; + } *qwords = bits; + + /* Set bit using "lock bts". Inform compiler that any memory + * from the start of the bit field up to and including the + * qword containing this bit may be modified. (This is + * overkill but shouldn't matter in practice since we're + * unlikely to subsequently read other bits from the same bit + * field.) + */ + __asm__ __volatile__ ( "lock bts %1, %0" + : "+m" ( *qwords ) : "Ir" ( bit ) ); +} + +#endif /* _BITS_HYPERV_H */ diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/profile.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/profile.h index 6fc16d84b..b7c74fbe7 100644 --- a/qemu/roms/ipxe/src/arch/x86_64/include/bits/profile.h +++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/profile.h @@ -7,7 +7,7 @@ * */ -FILE_LICENCE ( GPL2_OR_LATER ); +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #include <stdint.h> diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/reboot.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/reboot.h index f1bce0540..f9bcd6a7b 100644 --- a/qemu/roms/ipxe/src/arch/x86_64/include/bits/reboot.h +++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/reboot.h @@ -7,6 +7,6 @@ * */ -FILE_LICENCE ( GPL2_OR_LATER ); +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #endif /* _BITS_REBOOT_H */ diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/sanboot.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/sanboot.h index d33d03cbe..dcab830f6 100644 --- a/qemu/roms/ipxe/src/arch/x86_64/include/bits/sanboot.h +++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/sanboot.h @@ -7,6 +7,6 @@ * */ -FILE_LICENCE ( GPL2_OR_LATER ); +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #endif /* _BITS_SANBOOT_H */ diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/strings.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/strings.h index 6ee99a500..3b7911f3b 100644 --- a/qemu/roms/ipxe/src/arch/x86_64/include/bits/strings.h +++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/strings.h @@ -1,7 +1,43 @@ #ifndef _BITS_STRINGS_H #define _BITS_STRINGS_H -FILE_LICENCE ( GPL2_OR_LATER ); +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 ){ + long long lsb_minus_one; + + /* If the input value is zero, the BSF instruction returns + * ZF=0 and leaves an undefined value in the output register. + * Perform this check in C rather than asm so that it can be + * omitted in cases where the compiler is able to prove that + * the input is non-zero. + */ + if ( value ) { + __asm__ ( "bsfq %1, %0" + : "=r" ( lsb_minus_one ) + : "rm" ( value ) ); + return ( lsb_minus_one + 1 ); + } else { + return 0; + } +} + +/** + * 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 @@ -13,7 +49,7 @@ static inline __attribute__ (( always_inline )) int __flsll ( long long value ){ long long msb_minus_one; /* If the input value is zero, the BSR instruction returns - * ZF=1 and leaves an undefined value in the output register. + * ZF=0 and leaves an undefined value in the output register. * Perform this check in C rather than asm so that it can be * omitted in cases where the compiler is able to prove that * the input is non-zero. diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/time.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/time.h index 59b355359..aa74fac8c 100644 --- a/qemu/roms/ipxe/src/arch/x86_64/include/bits/time.h +++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/time.h @@ -7,6 +7,6 @@ * */ -FILE_LICENCE ( GPL2_OR_LATER ); +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #endif /* _BITS_TIME_H */ |