From a04dc12d72a76a08ba58c008e7200428453a40ff Mon Sep 17 00:00:00 2001
From: Ariadne Conill <ariadne@dereferenced.org>
Date: Sun, 6 Dec 2020 13:50:50 +0000
Subject: [PATCH] aarch64: add freestanding port

---
 README.md                        |  2 +-
 arch/aarch64/freestanding/bits.h | 34 ++++++++++++++++++++++++++++++++
 arch/aarch64/makecontext.c       |  2 +-
 3 files changed, 36 insertions(+), 2 deletions(-)
 create mode 100644 arch/aarch64/freestanding/bits.h

diff --git a/README.md b/README.md
index 832f5e4..1512b03 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ Adding support for new architectures is easy, but you need to know assembly lang
 
 | Architecture | Works on musl | Syscall | Supports FREESTANDING |
 |--------------|---------------|---------|-----------------------|
-|    aarch64   | ✓             |         |                       |
+|    aarch64   | ✓             |         | ✓                     |
 |      arm     | ✓             |         | ✓                     |
 |     m68k     | ✓             |         | ✓                     |
 |     mips     | ✓             |         | ✓                     |
diff --git a/arch/aarch64/freestanding/bits.h b/arch/aarch64/freestanding/bits.h
new file mode 100644
index 0000000..3d6e8d7
--- /dev/null
+++ b/arch/aarch64/freestanding/bits.h
@@ -0,0 +1,34 @@
+#ifndef LIBUCONTEXT_BITS_H
+#define LIBUCONTEXT_BITS_H
+
+typedef unsigned long libucontext_greg_t;
+typedef unsigned long libucontext_gregset_t[34];
+
+typedef struct {
+	__uint128_t vregs[32];
+	unsigned int fpsr;
+	unsigned int fpcr;
+} libucontext_fpregset_t;
+
+typedef struct sigcontext {
+	unsigned long fault_address;
+	unsigned long regs[31];
+	unsigned long sp, pc, pstate;
+	long double __reserved[256];
+} libucontext_mcontext_t;
+
+typedef struct {
+	void *ss_sp;
+	int ss_flags;
+	size_t ss_size;
+} libucontext_stack_t;
+
+typedef struct libucontext_ucontext {
+	unsigned long uc_flags;
+	struct libucontext_ucontext *uc_link;
+	libucontext_stack_t uc_stack;
+	unsigned char __pad[128];
+	libucontext_mcontext_t uc_mcontext;
+} libucontext_ucontext_t;
+
+#endif
diff --git a/arch/aarch64/makecontext.c b/arch/aarch64/makecontext.c
index d2e90f5..fb291c5 100644
--- a/arch/aarch64/makecontext.c
+++ b/arch/aarch64/makecontext.c
@@ -23,7 +23,7 @@ extern void libucontext_trampoline(void);
 
 
 void
-libucontext_makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
+libucontext_makecontext(libucontext_ucontext_t *ucp, void (*func)(void), int argc, ...)
 {
 	unsigned long *sp;
 	unsigned long *regp;