RDTSCP instruction reads the current value of the processor’s
time-stamp counter (a 64-bit MSR) into the EDX:EAX registers, and it
also reads the value of the IA32_TSC_AUX MSR (address C0000103H) into
the ECX register. However, the current RDTSCP implementation does not
provide a hint for the compiler that ECX has been changed, resulting in
register corrupted and subtle errors.
Signed-off-by: ouyangxiangzhen <ouyangxiangzhen@xiaomi.com>
rename _rdtsc macro to rdtsc to avoid conflict with external code
rename rdtsc macro to rdtscp to be the same as asm instruction used
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
Add addrenv support for x86_64.
For now we support mapping on PT level, so PD, PDT and PML4 are static
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
use new MMU api to implement up_map_region().
The new implementation support maping over 0xffffffff but requires CONFIG_MM_PGALLOC=y
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
Add support for XSAVE/XRSTOR to handle x86_64 procesor extended states.
Support for these instructions is required to support AVX instruction set
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
Intel64 can now boot application cores which is needed for SMP
IMPORTANT: CONFIG_BOARD_LOOPSPERMSEC must be properly configured,
otherwise AP boot sequence can fail due too short delays during the AP startup
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
Add support for inter-processor signaling in x86_64 based on up_trigger_irq() interface.
Preparations for SMP.
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
Use GS base regsiter to store reference to CPU private data.
Then we can easily refer to private CPU data using the GS segment.
Required for SMP support.
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
enable FPU and implement up_fpucmp to pass ostest
With aggressive optimization enabled (-O2/-O3), ostest FPU test will fail.
This is because the compiler will generate additional vector
instructions between subsequent up_fpucmp() calls (loop vectorization
somewhere in usleep() call), which will consequently overwrite
the expected FPU context (XMM registers).
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
All modern desgin support stack pointer and it's also an
important information, so let's standardize this interface.
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
To make it match what the compiler expects.
on nuttx-ci-linux image:
root@fec5a6192c70:/tools# gcc -dM -E - < /dev/null | grep -E "UINT(32|64)_TYPE"
#define __UINT64_TYPE__ long unsigned int
#define __UINT32_TYPE__ unsigned int
root@fec5a6192c70:/tools#
on macOS:
spacetanuki% x86_64-elf-gcc -dM -E - < /dev/null | grep -E "UINT(32|64)_TYPE"
#define __UINT32_TYPE__ unsigned int
#define __UINT64_TYPE__ long unsigned int
spacetanuki%
like other related macro(e.g. INTMAX_MIN, INTMAX_MAX...)
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I8863599960b1a9b1c22ae9c35735a379a4c745b0
