From 913d592f973a0155647473eaa032711fe956f8a5 Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@google.com>
Date: Fri, 22 Sep 2017 11:09:53 +0200
Subject: all: more assorted fuchsia support

---
 executor/executor_fuchsia.cc | 139 ++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 137 insertions(+), 2 deletions(-)

(limited to 'executor/executor_fuchsia.cc')

diff --git a/executor/executor_fuchsia.cc b/executor/executor_fuchsia.cc
index 3a214e4ac..4ff293350 100644
--- a/executor/executor_fuchsia.cc
+++ b/executor/executor_fuchsia.cc
@@ -3,10 +3,145 @@
 
 // +build
 
+#define SYZ_EXECUTOR
+#include "common_fuchsia.h"
+
+struct event_t {
+	pthread_mutex_t mu;
+	pthread_cond_t cv;
+	bool state;
+};
+
+#include "executor.h"
+
 #include "syscalls_fuchsia.h"
 
-int main()
+char input_data[kMaxInput];
+uint32_t output;
+
+int main(int argc, char** argv)
+{
+	if (argc == 2 && strcmp(argv[1], "version") == 0) {
+		puts("linux " GOARCH " " SYZ_REVISION " " GIT_REVISION);
+		return 0;
+	}
+
+	int pos = 0;
+	for (;;) {
+		int rv = read(0, input_data + pos, sizeof(input_data) - pos);
+		if (rv < 0)
+			fail("read failed");
+		if (rv == 0)
+			break;
+		pos += rv;
+	}
+	if (pos < 24)
+		fail("truncated input");
+
+	uint64_t flags = *(uint64_t*)input_data;
+	flag_debug = flags & (1 << 0);
+	flag_threaded = flags & (1 << 2);
+	flag_collide = flags & (1 << 3);
+	if (!flag_threaded)
+		flag_collide = false;
+	uint64_t executor_pid = *((uint64_t*)input_data + 2);
+	debug("input %d, threaded=%d collide=%d pid=%llu\n",
+	      pos, flag_threaded, flag_collide, executor_pid);
+
+	execute_one(((uint64_t*)input_data) + 3);
+	return 0;
+}
+
+long execute_syscall(call_t* c, long a0, long a1, long a2, long a3, long a4, long a5, long a6, long a7, long a8)
+{
+	debug("%s = %p\n", c->name, c->call);
+	long res = c->call(a0, a1, a2, a3, a4, a5, a6, a7, a8);
+	debug("%s = %ld\n", c->name, res);
+	return res;
+}
+
+void cover_open()
+{
+}
+
+void cover_enable(thread_t* th)
+{
+}
+
+void cover_reset(thread_t* th)
+{
+}
+
+uint64_t read_cover_size(thread_t* th)
 {
-	(void)syscalls;
 	return 0;
 }
+
+uint32_t* write_output(uint32_t v)
+{
+	return &output;
+}
+
+void write_completed(uint32_t completed)
+{
+}
+
+void event_init(event_t* ev)
+{
+	if (pthread_mutex_init(&ev->mu, 0))
+		fail("pthread_mutex_init failed");
+	if (pthread_cond_init(&ev->cv, 0))
+		fail("pthread_cond_init failed");
+	ev->state = false;
+}
+
+void event_reset(event_t* ev)
+{
+	ev->state = false;
+}
+
+void event_set(event_t* ev)
+{
+	pthread_mutex_lock(&ev->mu);
+	if (ev->state)
+		fail("event already set");
+	ev->state = true;
+	pthread_mutex_unlock(&ev->mu);
+	pthread_cond_broadcast(&ev->cv);
+}
+
+void event_wait(event_t* ev)
+{
+	pthread_mutex_lock(&ev->mu);
+	while (!ev->state)
+		pthread_cond_wait(&ev->cv, &ev->mu);
+	pthread_mutex_unlock(&ev->mu);
+}
+
+bool event_isset(event_t* ev)
+{
+	pthread_mutex_lock(&ev->mu);
+	bool res = ev->state;
+	pthread_mutex_unlock(&ev->mu);
+	return res;
+}
+
+bool event_timedwait(event_t* ev, uint64_t timeout_ms)
+{
+	pthread_mutex_lock(&ev->mu);
+	uint64_t start = current_time_ms();
+	for (;;) {
+		if (ev->state)
+			break;
+		uint64_t now = current_time_ms();
+		if (now - start > timeout_ms)
+			break;
+		timespec ts;
+		ts.tv_sec = 0;
+		ts.tv_nsec = (timeout_ms - (now - start)) * 1000 * 1000;
+		pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
+	}
+	bool res = ev->state;
+	pthread_mutex_unlock(&ev->mu);
+	return res;
+}
-- 
cgit mrf-deployment