diff options
| author | Greentime Hu <greentime.hu@sifive.com> | 2023-06-05 14:07:09 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-06-08 17:16:45 +0300 |
| commit | 0c59922c769a1361d4699ef6694b59031767a74e (patch) | |
| tree | a2d8afd8e3dc5bb44ba3a4ba4cc1a28dbc0f8435 /arch/riscv/include | |
| parent | cd054837243b5f36ff395c21135ff153871180f1 (diff) | |
| download | linux-0c59922c769a1361d4699ef6694b59031767a74e.tar.xz | |
riscv: Add ptrace vector support
This patch adds ptrace support for riscv vector. The vector registers will
be saved in datap pointer of __riscv_v_ext_state. This pointer will be set
right after the __riscv_v_ext_state data structure then it will be put in
ubuf for ptrace system call to get or set. It will check if the datap got
from ubuf is set to the correct address or not when the ptrace system call
is trying to set the vector registers.
Co-developed-by: Vincent Chen <vincent.chen@sifive.com>
Signed-off-by: Vincent Chen <vincent.chen@sifive.com>
Signed-off-by: Greentime Hu <greentime.hu@sifive.com>
Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
Link: https://lore.kernel.org/r/20230605110724.21391-13-andy.chiu@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include')
| -rw-r--r-- | arch/riscv/include/uapi/asm/ptrace.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/riscv/include/uapi/asm/ptrace.h b/arch/riscv/include/uapi/asm/ptrace.h index 586786d023c4..e8d127ec5cf7 100644 --- a/arch/riscv/include/uapi/asm/ptrace.h +++ b/arch/riscv/include/uapi/asm/ptrace.h @@ -94,6 +94,13 @@ struct __riscv_v_ext_state { */ }; +/* + * According to spec: The number of bits in a single vector register, + * VLEN >= ELEN, which must be a power of 2, and must be no greater than + * 2^16 = 65536bits = 8192bytes + */ +#define RISCV_MAX_VLENB (8192) + #endif /* __ASSEMBLY__ */ #endif /* _UAPI_ASM_RISCV_PTRACE_H */ |