16 files changed, 181 insertions, 0 deletions
diff --git a/libc-top-half/musl/arch/wasm32/atomic_arch.h b/libc-top-half/musl/arch/wasm32/atomic_arch.h
new file mode 100644
index 0000000..dd9428c
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/atomic_arch.h
@@ -0,0 +1,7 @@
+#define a_barrier() (__sync_synchronize())
+#define a_cas(p, t, s) (__sync_val_compare_and_swap((p), (t), (s)))
+#define a_crash() (__builtin_trap())
+#define a_clz_32 __builtin_clz
+#define a_clz_64 __builtin_clzll
+#define a_ctz_32 __builtin_ctz
+#define a_ctz_64 __builtin_ctzll
diff --git a/libc-top-half/musl/arch/wasm32/bits/alltypes.h.in b/libc-top-half/musl/arch/wasm32/bits/alltypes.h.in
new file mode 100644
index 0000000..5dcfc9a
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/bits/alltypes.h.in
@@ -0,0 +1,58 @@
+#define _Addr long
+#define _Int64 long long
+#define _Reg long long
+
+#define __BYTE_ORDER __BYTE_ORDER__
+
+#define __LONG_MAX __LONG_MAX__
+
+/*
+ * Rather than define everything ourselves here in the musl layer, for
+ * WASI, reference the definitions in the lower layers.
+ */
+
+#if defined(__NEED_wchar_t) && !defined(__DEFINED_wchar_t)
+#define __need_wchar_t
+#include <stddef.h>
+#define __DEFINED_wchar_t
+#endif
+
+#if defined(__NEED_wint_t) && !defined(__DEFINED_wint_t)
+#define __need_wint_t
+#include <stddef.h>
+#define __DEFINED_wint_t
+#endif
+
+TYPEDEF float float_t;
+TYPEDEF double double_t;
+
+#if defined(__NEED_max_align_t) && !defined(__DEFINED_max_align_t)
+#define __need_max_align_t
+#include <stddef.h>
+#define __DEFINED_max_align_t
+#endif
+
+#if defined(__NEED_time_t) && !defined(__DEFINED_time_t)
+#include <__typedef_time_t.h>
+#define __DEFINED_time_t
+#endif
+
+#if defined(__NEED_suseconds_t) && !defined(__DEFINED_suseconds_t)
+#include <__typedef_suseconds_t.h>
+#define __DEFINED_suseconds_t
+#endif
+
+#if defined(__NEED_clockid_t) && !defined(__DEFINED_clockid_t)
+#include <__typedef_clockid_t.h>
+#define __DEFINED_clockid_t
+#endif
+
+#if defined(__NEED_sigset_t) && !defined(__DEFINED_sigset_t)
+#include <__typedef_sigset_t.h>
+#define __DEFINED_sigset_t
+#endif
+
+#if defined(__NEED_clock_t) && !defined(__DEFINED_clock_t)
+#include <__typedef_clock_t.h>
+#define __DEFINED_clock_t
+#endif
diff --git a/libc-top-half/musl/arch/wasm32/bits/dirent.h b/libc-top-half/musl/arch/wasm32/bits/dirent.h
new file mode 100644
index 0000000..55f2bc9
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/bits/dirent.h
@@ -0,0 +1 @@
+#include <__struct_dirent.h>
diff --git a/libc-top-half/musl/arch/wasm32/bits/fcntl.h b/libc-top-half/musl/arch/wasm32/bits/fcntl.h
new file mode 100644
index 0000000..a2f3341
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/bits/fcntl.h
@@ -0,0 +1 @@
+/* Use the WASI libc fcntl implementation bits. */
diff --git a/libc-top-half/musl/arch/wasm32/bits/float.h b/libc-top-half/musl/arch/wasm32/bits/float.h
new file mode 100644
index 0000000..719c790
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/bits/float.h
@@ -0,0 +1,16 @@
+#define FLT_EVAL_METHOD 0
+
+#define LDBL_TRUE_MIN 6.47517511943802511092443895822764655e-4966L
+#define LDBL_MIN 3.36210314311209350626267781732175260e-4932L
+#define LDBL_MAX 1.18973149535723176508575932662800702e+4932L
+#define LDBL_EPSILON 1.92592994438723585305597794258492732e-34L
+
+#define LDBL_MANT_DIG 113
+#define LDBL_MIN_EXP (-16381)
+#define LDBL_MAX_EXP 16384
+
+#define LDBL_DIG 33
+#define LDBL_MIN_10_EXP (-4931)
+#define LDBL_MAX_10_EXP 4932
+
+#define DECIMAL_DIG 36
diff --git a/libc-top-half/musl/arch/wasm32/bits/ioctl.h b/libc-top-half/musl/arch/wasm32/bits/ioctl.h
new file mode 100644
index 0000000..b4bf7c7
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/bits/ioctl.h
@@ -0,0 +1 @@
+/* Use the WASI libc ioctl implementation bits. */
diff --git a/libc-top-half/musl/arch/wasm32/bits/limits.h b/libc-top-half/musl/arch/wasm32/bits/limits.h
new file mode 100644
index 0000000..801bc48
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/bits/limits.h
@@ -0,0 +1 @@
+#include <__macro_PAGESIZE.h>
diff --git a/libc-top-half/musl/arch/wasm32/bits/posix.h b/libc-top-half/musl/arch/wasm32/bits/posix.h
new file mode 100644
index 0000000..387a3e4
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/bits/posix.h
@@ -0,0 +1,2 @@
+#define _POSIX_V6_ILP32_OFFBIG (1)
+#define _POSIX_V7_ILP32_OFFBIG (1)
diff --git a/libc-top-half/musl/arch/wasm32/bits/reg.h b/libc-top-half/musl/arch/wasm32/bits/reg.h
new file mode 100644
index 0000000..2633f39
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/bits/reg.h
@@ -0,0 +1,2 @@
+#undef __WORDSIZE
+#define __WORDSIZE 64
diff --git a/libc-top-half/musl/arch/wasm32/bits/signal.h b/libc-top-half/musl/arch/wasm32/bits/signal.h
new file mode 100644
index 0000000..77e8d8c
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/bits/signal.h
@@ -0,0 +1,40 @@
+#ifdef _WASI_EMULATED_SIGNAL
+
+#define SIGHUP    1
+#define SIGINT    2
+#define SIGQUIT   3
+#define SIGILL    4
+#define SIGTRAP   5
+#define SIGABRT   6
+#define SIGIOT    SIGABRT
+#define SIGBUS    7
+#define SIGFPE    8
+#define SIGKILL   9
+#define SIGUSR1   10
+#define SIGSEGV   11
+#define SIGUSR2   12
+#define SIGPIPE   13
+#define SIGALRM   14
+#define SIGTERM   15
+#define SIGSTKFLT 16
+#define SIGCHLD   17
+#define SIGCONT   18
+#define SIGSTOP   19
+#define SIGTSTP   20
+#define SIGTTIN   21
+#define SIGTTOU   22
+#define SIGURG    23
+#define SIGXCPU   24
+#define SIGXFSZ   25
+#define SIGVTALRM 26
+#define SIGPROF   27
+#define SIGWINCH  28
+#define SIGIO     29
+#define SIGPOLL   29
+#define SIGPWR    30
+#define SIGSYS    31
+#define SIGUNUSED SIGSYS
+
+#define _NSIG 65
+
+#endif
diff --git a/libc-top-half/musl/arch/wasm32/bits/stat.h b/libc-top-half/musl/arch/wasm32/bits/stat.h
new file mode 100644
index 0000000..67a0e72
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/bits/stat.h
@@ -0,0 +1 @@
+#include <__struct_stat.h>
diff --git a/libc-top-half/musl/arch/wasm32/bits/stdint.h b/libc-top-half/musl/arch/wasm32/bits/stdint.h
new file mode 100644
index 0000000..6e7c770
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/bits/stdint.h
@@ -0,0 +1,20 @@
+typedef int16_t int_fast16_t;
+typedef int32_t int_fast32_t;
+typedef uint16_t uint_fast16_t;
+typedef uint32_t uint_fast32_t;
+
+#define INT_FAST16_MIN  INT16_MIN
+#define INT_FAST32_MIN  INT32_MIN
+
+#define INT_FAST16_MAX  INT16_MAX
+#define INT_FAST32_MAX  INT32_MAX
+
+#define UINT_FAST16_MAX UINT16_MAX
+#define UINT_FAST32_MAX UINT32_MAX
+
+#define INTPTR_MIN      INT32_MIN
+#define INTPTR_MAX      INT32_MAX
+#define UINTPTR_MAX     UINT32_MAX
+#define PTRDIFF_MIN     INT32_MIN
+#define PTRDIFF_MAX     INT32_MAX
+#define SIZE_MAX        UINT32_MAX
diff --git a/libc-top-half/musl/arch/wasm32/fp_arch.h b/libc-top-half/musl/arch/wasm32/fp_arch.h
new file mode 100644
index 0000000..707d512
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/fp_arch.h
@@ -0,0 +1,25 @@
+// WebAssembly has no floating-point exceptions or alternate rounding modes,
+// so there's no need to prevent expressions from moving or force their
+// evaluation.
+
+#define fp_barrierf fp_barrierf
+static inline float fp_barrierf(float x)
+{
+	return x;
+}
+
+#define fp_barrier fp_barrier
+static inline double fp_barrier(double x)
+{
+	return x;
+}
+
+#define fp_force_evalf fp_force_evalf
+static inline void fp_force_evalf(float x)
+{
+}
+
+#define fp_force_eval fp_force_eval
+static inline void fp_force_eval(double x)
+{
+}
diff --git a/libc-top-half/musl/arch/wasm32/pthread_arch.h b/libc-top-half/musl/arch/wasm32/pthread_arch.h
new file mode 100644
index 0000000..58e76ab
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/pthread_arch.h
@@ -0,0 +1,5 @@
+extern _Thread_local struct __pthread __wasilibc_pthread_self;
+
+static inline uintptr_t __get_tp() {
+  return (uintptr_t)&__wasilibc_pthread_self;
+}
diff --git a/libc-top-half/musl/arch/wasm32/reloc.h b/libc-top-half/musl/arch/wasm32/reloc.h
new file mode 100644
index 0000000..91b4840
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/reloc.h
@@ -0,0 +1 @@
+#define LDSO_ARCH "wasm32"
diff --git a/libc-top-half/musl/arch/wasm32/syscall_arch.h b/libc-top-half/musl/arch/wasm32/syscall_arch.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libc-top-half/musl/arch/wasm32/syscall_arch.h