| #
325810 |
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14-Nov-2017 |
jhb |
MFC 323580,323933,323934,324814,324817: Enable AT_HWCAP on arm.
I reused the SV_HWCAP stub to cover the sv_hwcap2 field as well.
323580:
Add AT_HWCAP flags for VFP settings for FreeBSD/arm.
These flags match the meaning and value of flags in Linux, though
Linux has many more flags.
323933:
Correct HWCAP_VFP3* values to match Linux.
323934:
Detect NEON and set HWCAP_NEON if present.
324814:
Add AT_HWCAP2 ELF auxiliary vector.
- allocate value for new AT_HWCAP2 auxiliary vector on all platforms.
- expand 'struct sysentvec' by new 'u_long *sv_hwcap2', in exactly
same way as for AT_HWCAP.
324817:
Fullify implementation of AT_HWCAP and AT_HWCAP2 for ARMv6,7.
This makes elf_aux_info(3) useable for ARM ports.
Tested by: mmel
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| #
324687 |
|
17-Oct-2017 |
jhb |
MFC 323579,323585: Add AT_HWCAP and AT_EHDRFLAGS on all platforms.
To preserve KBI on stable/11, a new SV_HWCAP flag is added which
indicates if the sv_hwcap field is present and valid to avoid examining
the field in old modules. Only sysentvec's which wish to use sv_hwcap
need to set the flag in stable/11.
323579:
Add AT_HWCAP and AT_EHDRFLAGS on all platforms.
A new 'u_long *sv_hwcap' field is added to 'struct sysentvec'. A
process ABI can set this field to point to a value holding a mask of
architecture-specific CPU feature flags. If an ABI does not wish to
supply AT_HWCAP to processes the field can be left as NULL.
The support code for AT_EHDRFLAGS was already present on all systems,
just the #define was not present. This is a step towards unifying the
AT_* constants across platforms.
323585:
Add AT_EHDRFLAGS and AT_HWCAP on amd64.
x86 has two separate (but identical) list of AT_* constants and the
earlier commit to add AT_HWCAP only updated the i386 list.
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| #
292407 |
|
17-Dec-2015 |
br |
Import RISC-V machine headers. This is a minimal set required to compile
kernel and userland.
Reviewed by: andrew, imp, kib
Sponsored by: DARPA, AFRL
Sponsored by: HEIF5
Differential Revision: https://reviews.freebsd.org/D4554
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