diff options
Diffstat (limited to 'libc/tools/gensyscalls.py')
| -rwxr-xr-x | libc/tools/gensyscalls.py | 103 |
1 files changed, 76 insertions, 27 deletions
diff --git a/libc/tools/gensyscalls.py b/libc/tools/gensyscalls.py index bed9445e2..947e4444f 100755 --- a/libc/tools/gensyscalls.py +++ b/libc/tools/gensyscalls.py @@ -1,11 +1,12 @@ #!/usr/bin/python # -# this tool is used to generate the syscall assmbler templates -# to be placed into arch-x86/syscalls, as well as the content -# of arch-x86/linux/_syscalls.h +# this tool is used to generate the syscall assembler templates +# to be placed into arch-{arm,x86,mips}/syscalls, as well as the content +# of arch-{arm,x86,mips}/linux/_syscalls.h # import sys, os.path, glob, re, commands, filecmp, shutil +import getpass from bionic_utils import * @@ -31,9 +32,10 @@ print "bionic_root is %s" % bionic_root bionic_temp = "/tmp/bionic_gensyscalls/" # all architectures, update as you see fit -all_archs = [ "arm", "x86" ] +all_archs = [ "arm", "x86", "mips" ] def make_dir( path ): + path = os.path.abspath(path) if not os.path.exists(path): parent = os.path.dirname(path) if parent: @@ -183,6 +185,32 @@ thumb_call_long = thumb_header + """\ .fnend """ +# mips assembler templates for each syscall stub +# +mips_call = """/* autogenerated by gensyscalls.py */ +#include <sys/linux-syscalls.h> + .text + .globl %(fname)s + .align 4 + .ent %(fname)s + +%(fname)s: + .set noreorder + .cpload $t9 + li $v0, %(idname)s + syscall + bnez $a3, 1f + move $a0, $v0 + j $ra + nop +1: + la $t9,__set_errno + j $t9 + nop + .set reorder + .end %(fname)s +""" + def param_uses_64bits(param): """Returns True iff a syscall parameter description corresponds to a 64-bit type.""" @@ -331,6 +359,10 @@ class State: return thumb_call_long % t return thumb_call_default % t + def mips_genstub(self,fname, idname): + t = { "fname" : fname, + "idname" : idname } + return mips_call % t def superh_genstub(self, fname, flags, idname): numargs = int(flags) @@ -360,7 +392,7 @@ class State: syscall_params = t["params"] syscall_name = t["name"] - if t["id"] >= 0: + if t["common"] >= 0 or t["armid"] >= 0: num_regs = count_arm_param_registers(syscall_params) if gen_thumb_stubs: t["asm-thumb"] = self.thumb_genstub(syscall_func,num_regs,"__NR_"+syscall_name) @@ -370,7 +402,7 @@ class State: else: t["asm-arm"] = self.arm_genstub(syscall_func,num_regs,"__NR_"+syscall_name) - if t["id2"] >= 0: + if t["common"] >= 0 or t["x86id"] >= 0: num_regs = count_generic_param_registers(syscall_params) if t["cid"] >= 0: t["asm-x86"] = self.x86_genstub_cid(syscall_func, num_regs, "__NR_"+syscall_name, t["cid"]) @@ -380,62 +412,70 @@ class State: E("cid for dispatch syscalls is only supported for x86 in " "'%s'" % syscall_name) return + if t["common"] >= 0 or t["mipsid"] >= 0: + t["asm-mips"] = self.mips_genstub(syscall_func,"__NR_"+syscall_name) def gen_NR_syscall(self,fp,name,id): fp.write( "#define __NR_%-25s (__NR_SYSCALL_BASE + %d)\n" % (name,id) ) - # now dump the content of linux/_syscalls.h + # now dump the content of linux-syscalls.h def gen_linux_syscalls_h(self): path = "include/sys/linux-syscalls.h" D( "generating "+path ) fp = create_file( path ) fp.write( "/* auto-generated by gensyscalls.py, do not touch */\n" ) fp.write( "#ifndef _BIONIC_LINUX_SYSCALLS_H_\n\n" ) - fp.write( "#if !defined __ASM_ARM_UNISTD_H && !defined __ASM_I386_UNISTD_H\n" ) + fp.write( "#if !defined __ASM_ARM_UNISTD_H && !defined __ASM_I386_UNISTD_H && !defined __ASM_MIPS_UNISTD_H\n" ) fp.write( "#if defined __arm__ && !defined __ARM_EABI__ && !defined __thumb__\n" ) - fp.write( " # define __NR_SYSCALL_BASE 0x900000\n" ) - fp.write( " #else\n" ) - fp.write( " # define __NR_SYSCALL_BASE 0\n" ) - fp.write( " #endif\n\n" ) + fp.write( " # define __NR_SYSCALL_BASE 0x900000\n" ) + fp.write( "#elif defined(__mips__)\n" ) + fp.write( " # define __NR_SYSCALL_BASE 4000\n" ) + fp.write( "#else\n" ) + fp.write( " # define __NR_SYSCALL_BASE 0\n" ) + fp.write( "#endif\n\n" ) # first, all common syscalls - for sc in self.syscalls: - sc_id = sc["id"] - sc_id2 = sc["id2"] + for sc in sorted(self.syscalls,key=lambda x:x["common"]): + sc_id = sc["common"] sc_name = sc["name"] - if sc_id == sc_id2 and sc_id >= 0: + if sc_id >= 0: self.gen_NR_syscall( fp, sc_name, sc_id ) # now, all arm-specific syscalls fp.write( "\n#ifdef __arm__\n" ); for sc in self.syscalls: - sc_id = sc["id"] - sc_id2 = sc["id2"] + sc_id = sc["armid"] sc_name = sc["name"] - if sc_id != sc_id2 and sc_id >= 0: + if sc_id >= 0: self.gen_NR_syscall( fp, sc_name, sc_id ) fp.write( "#endif\n" ); gen_syscalls = {} # finally, all i386-specific syscalls fp.write( "\n#ifdef __i386__\n" ); - for sc in self.syscalls: - sc_id = sc["id"] - sc_id2 = sc["id2"] + for sc in sorted(self.syscalls,key=lambda x:x["x86id"]): + sc_id = sc["x86id"] sc_name = sc["name"] - if sc_id != sc_id2 and sc_id2 >= 0 and sc_name not in gen_syscalls: - self.gen_NR_syscall( fp, sc_name, sc_id2 ) + if sc_id >= 0 and sc_name not in gen_syscalls: + self.gen_NR_syscall( fp, sc_name, sc_id ) gen_syscalls[sc_name] = True fp.write( "#endif\n" ); + # all mips-specific syscalls + fp.write( "\n#ifdef __mips__\n" ); + for sc in sorted(self.syscalls,key=lambda x:x["mipsid"]): + sc_id = sc["mipsid"] + if sc_id >= 0: + self.gen_NR_syscall( fp, sc["name"], sc_id ) + fp.write( "#endif\n" ); + fp.write( "\n#endif\n" ) fp.write( "\n#endif /* _BIONIC_LINUX_SYSCALLS_H_ */\n" ); fp.close() self.other_files.append( path ) - - # now dump the content of linux/_syscalls.h + # now dump the content of linux-syscalls.h def gen_linux_unistd_h(self): path = "include/sys/linux-unistd.h" D( "generating "+path ) @@ -462,6 +502,7 @@ class State: arch_test = { "arm": lambda x: x.has_key("asm-arm") or x.has_key("asm-thumb"), "x86": lambda x: x.has_key("asm-x86"), + "mips": lambda x: x.has_key("asm-mips") } for sc in self.syscalls: @@ -471,6 +512,7 @@ class State: fp.close() self.other_files.append( path ) + # now generate each syscall stub def gen_syscall_stubs(self): for sc in self.syscalls: @@ -498,6 +540,13 @@ class State: fp.close() self.new_stubs.append( fname ) + if sc.has_key("asm-mips") and 'mips' in all_archs: + fname = "arch-mips/syscalls/%s.S" % sc["func"] + D2( ">>> generating "+fname ) + fp = create_file( fname ) + fp.write(sc["asm-mips"]) + fp.close() + self.new_stubs.append( fname ) def regenerate(self): D( "scanning for existing architecture-specific stub files" ) @@ -515,7 +564,7 @@ class State: if not os.path.exists( bionic_temp ): D( "creating %s" % bionic_temp ) - os.mkdir( bionic_temp ) + make_dir( bionic_temp ) # D( "p4 editing source files" ) # for arch in all_archs: |