[PATCH v2 2/4] linux-headers: riscv: add ptrace.h

[Daniel Henrique Barboza]

KVM vector support for RISC-V requires the linux-header ptrace.h.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
---
 linux-headers/asm-riscv/ptrace.h | 132 +++++++++++++++++++++++++++++++
 scripts/update-linux-headers.sh  |   3 +
 2 files changed, 135 insertions(+)
 create mode 100644 linux-headers/asm-riscv/ptrace.h

diff --git a/linux-headers/asm-riscv/ptrace.h b/linux-headers/asm-riscv/ptrace.h
new file mode 100644
index 0000000000..1e3166caca
--- /dev/null
+++ b/linux-headers/asm-riscv/ptrace.h
@@ -0,0 +1,132 @@
+/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
+/*
+ * Copyright (C) 2012 Regents of the University of California
+ */
+
+#ifndef _ASM_RISCV_PTRACE_H
+#define _ASM_RISCV_PTRACE_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+#define PTRACE_GETFDPIC                33
+
+#define PTRACE_GETFDPIC_EXEC   0
+#define PTRACE_GETFDPIC_INTERP 1
+
+/*
+ * User-mode register state for core dumps, ptrace, sigcontext
+ *
+ * This decouples struct pt_regs from the userspace ABI.
+ * struct user_regs_struct must form a prefix of struct pt_regs.
+ */
+struct user_regs_struct {
+       unsigned long pc;
+       unsigned long ra;
+       unsigned long sp;
+       unsigned long gp;
+       unsigned long tp;
+       unsigned long t0;
+       unsigned long t1;
+       unsigned long t2;
+       unsigned long s0;
+       unsigned long s1;
+       unsigned long a0;
+       unsigned long a1;
+       unsigned long a2;
+       unsigned long a3;
+       unsigned long a4;
+       unsigned long a5;
+       unsigned long a6;
+       unsigned long a7;
+       unsigned long s2;
+       unsigned long s3;
+       unsigned long s4;
+       unsigned long s5;
+       unsigned long s6;
+       unsigned long s7;
+       unsigned long s8;
+       unsigned long s9;
+       unsigned long s10;
+       unsigned long s11;
+       unsigned long t3;
+       unsigned long t4;
+       unsigned long t5;
+       unsigned long t6;
+};
+
+struct __riscv_f_ext_state {
+       __u32 f[32];
+       __u32 fcsr;
+};
+
+struct __riscv_d_ext_state {
+       __u64 f[32];
+       __u32 fcsr;
+};
+
+struct __riscv_q_ext_state {
+       __u64 f[64] __attribute__((aligned(16)));
+       __u32 fcsr;
+       /*
+        * Reserved for expansion of sigcontext structure.  Currently zeroed
+        * upon signal, and must be zero upon sigreturn.
+        */
+       __u32 reserved[3];
+};
+
+struct __riscv_ctx_hdr {
+       __u32 magic;
+       __u32 size;
+};
+
+struct __riscv_extra_ext_header {
+       __u32 __padding[129] __attribute__((aligned(16)));
+       /*
+        * Reserved for expansion of sigcontext structure.  Currently zeroed
+        * upon signal, and must be zero upon sigreturn.
+        */
+       __u32 reserved;
+       struct __riscv_ctx_hdr hdr;
+};
+
+union __riscv_fp_state {
+       struct __riscv_f_ext_state f;
+       struct __riscv_d_ext_state d;
+       struct __riscv_q_ext_state q;
+};
+
+struct __riscv_v_ext_state {
+       unsigned long vstart;
+       unsigned long vl;
+       unsigned long vtype;
+       unsigned long vcsr;
+       unsigned long vlenb;
+       void *datap;
+       /*
+        * In signal handler, datap will be set a correct user stack offset
+        * and vector registers will be copied to the address of datap
+        * pointer.
+        */
+};
+
+struct __riscv_v_regset_state {
+       unsigned long vstart;
+       unsigned long vl;
+       unsigned long vtype;
+       unsigned long vcsr;
+       unsigned long vlenb;
+       char vreg[];
+};
+
+/*
+ * 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 /* _ASM_RISCV_PTRACE_H */
diff --git a/scripts/update-linux-headers.sh b/scripts/update-linux-headers.sh
index 34295c0fe5..a0006eec6f 100755
--- a/scripts/update-linux-headers.sh
+++ b/scripts/update-linux-headers.sh
@@ -156,6 +156,9 @@ for arch in $ARCHLIST; do
         cp_portable "$tmpdir/bootparam.h" \
                     "$output/include/standard-headers/asm-$arch"
     fi
+    if [ $arch = riscv ]; then
+        cp "$tmpdir/include/asm/ptrace.h" "$output/linux-headers/asm-riscv/"
+    fi
 done
 
 rm -rf "$output/linux-headers/linux"
-- 
2.43.0