Add in support for the Hitach H8/300H architecture,

contributed by Yoshinori Sato <qzb04471@nifty.ne.jp>

1 files changed, 33 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/h8300/ptrace.c b/libc/sysdeps/linux/h8300/ptrace.c
new file mode 100644
index 000000000..acd6db0b4
--- /dev/null
+++ b/libc/sysdeps/linux/h8300/ptrace.c
@@ -0,0 +1,33 @@
+
+#include <errno.h>
+#include <asm/ptrace.h>
+#include <sys/syscall.h>
+
+int
+ptrace(int request, int pid, int addr, int data)
+{
+	long ret;
+	long res;
+	if (request > 0 && request < 4) (long *)data = &ret;
+
+	__asm__ volatile ("mov.l %1,er0\n\t"
+			  "mov.l %2,er1\n\t"
+			  "mov.l %3,er2\n\t"
+			  "mov.l %4,er3\n\t"
+			  "mov.l %5,er4\n\t"
+			  "trapa  #0\n\t"
+			  "mov.l er0,%0"
+		:"=g" (res)
+		:"i" (__NR_ptrace), "g" (request), "g" (pid),
+		 "g" (addr), "g" (data) : "er0", "er1", "er2", "er3", "er4");
+
+	if (res >= 0) {
+		if (request > 0 && request < 4) {
+			__set_errno(0);
+			return (ret);
+		}
+		return (int) res;
+	}
+	__set_errno(-res);
+	return -1;
+}