modified SYSCALLS.TXT to support SuperH architecture
diff --git a/libc/tools/gensyscalls.py b/libc/tools/gensyscalls.py
index 530e565..41c9500 100755
--- a/libc/tools/gensyscalls.py
+++ b/libc/tools/gensyscalls.py
@@ -31,7 +31,7 @@
bionic_temp = "/tmp/bionic_gensyscalls/"
# all architectures, update as you see fit
-all_archs = [ "arm", "x86" ]
+all_archs = [ "arm", "x86", "sh" ]
def make_dir( path ):
if not os.path.exists(path):
@@ -188,6 +188,62 @@
.fnend
"""
+# SuperH assembler templates for each syscall stub
+#
+superh_header = """/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+ .text
+ .type %(fname)s, @function
+ .globl %(fname)s
+ .align 4
+
+%(fname)s:
+"""
+
+superh_call_default = """
+ /* invoke trap */
+ mov.l 0f, r3 /* trap num */
+ trapa #(%(numargs)s + 0x10)
+
+ /* check return value */
+ cmp/pz r0
+ bt %(idname)s_end
+
+ /* keep error number */
+ sts.l pr, @-r15
+ mov.l 1f, r1
+ jsr @r1
+ mov r0, r4
+ lds.l @r15+, pr
+
+%(idname)s_end:
+ rts
+ nop
+
+ .align 2
+0: .long %(idname)s
+1: .long __set_syscall_errno
+"""
+
+superh_5args_header = """
+ /* get ready for additonal arg */
+ mov.l @r15, r0
+"""
+
+superh_6args_header = """
+ /* get ready for additonal arg */
+ mov.l @r15, r0
+ mov.l @(4, r15), r1
+"""
+
+superh_7args_header = """
+ /* get ready for additonal arg */
+ mov.l @r15, r0
+ mov.l @(4, r15), r1
+ mov.l @(8, r15), r2
+"""
+
class State:
def __init__(self):
@@ -285,6 +341,23 @@
return thumb_call_default % t
+ def superh_genstub(self, fname, flags, idname):
+ numargs = int(flags)
+ t = { "fname" : fname,
+ "idname" : idname,
+ "numargs" : numargs }
+ superh_call = superh_header
+ if flags:
+ if numargs == 5:
+ superh_call += superh_5args_header
+ if numargs == 6:
+ superh_call += superh_6args_header
+ if numargs == 7:
+ superh_call += superh_7args_header
+ superh_call += superh_call_default
+ return superh_call % t
+
+
def process_file(self,input):
parser = SysCallsTxtParser()
parser.parse_file(input)
@@ -314,6 +387,9 @@
E("cid for dispatch syscalls is only supported for x86 in "
"'%s'" % syscall_name)
return
+ if t["id3"] >= 0:
+ t["asm-sh"] = self.superh_genstub(syscall_func,len(syscall_params),"__NR_"+syscall_name)
+
def gen_NR_syscall(self,fp,name,id):
@@ -363,6 +439,20 @@
gen_syscalls[sc_name] = True
fp.write( "#endif\n" );
+ # all superh-specific syscalls
+ fp.write( "\n#if defined(__SH3__) || defined(__SH4__) \n" );
+ for sc in self.syscalls:
+ sc_id = sc["id"]
+ sc_id2 = sc["id2"]
+ sc_id3 = sc["id3"]
+ sc_name = sc["name"]
+ if sc_id2 != sc_id3 and sc_id3 >= 0:
+ self.gen_NR_syscall( fp, sc_name, sc_id3 )
+ else:
+ if sc_id != sc_id2 and sc_id2 >= 0:
+ self.gen_NR_syscall( fp, sc_name, sc_id2 )
+ fp.write( "#endif\n" );
+
fp.write( "\n#endif\n" )
fp.write( "\n#endif /* _BIONIC_LINUX_SYSCALLS_H_ */\n" );
fp.close()
@@ -395,7 +485,8 @@
fp.write( "syscall_src := \n" )
arch_test = {
"arm": lambda x: x.has_key("asm-arm") or x.has_key("asm-thumb"),
- "x86": lambda x: x.has_key("asm-x86")
+ "x86": lambda x: x.has_key("asm-x86"),
+ "sh": lambda x: x.has_key("asm-sh")
}
for sc in self.syscalls:
@@ -432,6 +523,14 @@
fp.close()
self.new_stubs.append( fname )
+ if sc.has_key("asm-sh"):
+ fname = "arch-sh/syscalls/%s.S" % sc["func"]
+ D( ">>> generating "+fname )
+ fp = create_file( fname )
+ fp.write(sc["asm-sh"])
+ fp.close()
+ self.new_stubs.append( fname )
+
def regenerate(self):
D( "scanning for existing architecture-specific stub files" )