From eeb3d2031396f9d4bc8f377344c7f5940eae8b9e Mon Sep 17 00:00:00 2001 From: Jacob Lifshay Date: Sun, 26 Nov 2023 19:14:21 -0800 Subject: [PATCH] add mmap_syscall tests --- src/openpower/decoder/isa/test_mem.py | 202 ++++++++++++++++++++++++++ 1 file changed, 202 insertions(+) diff --git a/src/openpower/decoder/isa/test_mem.py b/src/openpower/decoder/isa/test_mem.py index e57d1991..04d3f70c 100644 --- a/src/openpower/decoder/isa/test_mem.py +++ b/src/openpower/decoder/isa/test_mem.py @@ -6,6 +6,8 @@ import unittest from openpower.decoder.isa.mem import Mem, MemMMap from openpower.util import log import ctypes +from openpower.syscalls import ppc_flags +import tempfile class TestMem(unittest.TestCase): @@ -136,6 +138,206 @@ Memory: 0x00000160: 00 11 22 33 44 55 66 77 88 99 AA BB CC DD EE FF |.."3DUfw........| """) + def make_mmap_with_pattern(self): + m = MemMMap(row_bytes=8, emulating_mmap=True) + + prot = ppc_flags.PROT_READ | ppc_flags.PROT_WRITE + flags = ppc_flags.MAP_PRIVATE | ppc_flags.MAP_FIXED + retval = m.mmap_syscall(addr=1 << 16, length=15 << 16, prot=prot, + flags=flags, fd=-1, offset=0, is_mmap2=False) + self.assertEqual(retval, 1 << 16) + + text = self.log_fancy_to_string(m) + self.assertEqual(text, """ +Memory: + +""") + + for i in range(1, 16): + bytes_ = m.get_ctypes(i << 16, 16, True) + + self.assertIsInstance(bytes_, ctypes.c_ubyte * 16) + + for j in range(16): + bytes_[j] = i * 0x10 + j + + text = self.log_fancy_to_string(m) + self.assertEqual(text, """ +Memory: +0x00010000: 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F |................| +* +0x00020000: 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F | !"#$%&'()*+,-./| +* +0x00030000: 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F |0123456789:;<=>?| +* +0x00040000: 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F |@ABCDEFGHIJKLMNO| +* +0x00050000: 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F |PQRSTUVWXYZ[\]^_| +* +0x00060000: 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F |`abcdefghijklmno| +* +0x00070000: 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F |pqrstuvwxyz{|}~.| +* +0x00080000: 80 81 82 83 84 85 86 87 88 89 8A 8B 8C 8D 8E 8F |................| +* +0x00090000: 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F |................| +* +0x000A0000: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF |................| +* +0x000B0000: B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF |................| +* +0x000C0000: C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF |................| +* +0x000D0000: D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF |................| +* +0x000E0000: E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF |................| +* +0x000F0000: F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF |................| +""") + return m + + def test_mmap_anon(self): + m = self.make_mmap_with_pattern() + + prot = ppc_flags.PROT_READ | ppc_flags.PROT_WRITE + flags = ppc_flags.MAP_PRIVATE | ppc_flags.MAP_FIXED + retval = m.mmap_syscall(addr=3 << 16, length=2 << 16, prot=prot, + flags=flags, fd=-1, offset=0, is_mmap2=False) + self.assertEqual(retval, 3 << 16) + + text = self.log_fancy_to_string(m) + self.assertEqual(text, """ +Memory: +0x00010000: 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F |................| +* +0x00020000: 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F | !"#$%&'()*+,-./| +* +0x00050000: 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F |PQRSTUVWXYZ[\]^_| +* +0x00060000: 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F |`abcdefghijklmno| +* +0x00070000: 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F |pqrstuvwxyz{|}~.| +* +0x00080000: 80 81 82 83 84 85 86 87 88 89 8A 8B 8C 8D 8E 8F |................| +* +0x00090000: 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F |................| +* +0x000A0000: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF |................| +* +0x000B0000: B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF |................| +* +0x000C0000: C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF |................| +* +0x000D0000: D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF |................| +* +0x000E0000: E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF |................| +* +0x000F0000: F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF |................| +""") + + def test_mmap_file(self): + m = self.make_mmap_with_pattern() + with tempfile.NamedTemporaryFile() as file: + file.truncate(5 << 16) + file.write(b"Shouldn't see this\n") + file.seek(1 << 16) + file.write(b"Shouldn't see this #2\n") + file.seek(2 << 16) + file.write(b"Hello World!\n") + file.seek(3 << 16) + file.write(b"Foo Bar\n") + file.seek(4 << 16) + file.write(b"Shouldn't see this #3\n") + file.flush() + fd = file.file.fileno() + + prot = ppc_flags.PROT_READ | ppc_flags.PROT_WRITE + flags = ppc_flags.MAP_PRIVATE | ppc_flags.MAP_FIXED + retval = m.mmap_syscall(addr=3 << 16, length=2 << 16, prot=prot, + flags=flags, fd=fd, offset=2 << 16, + is_mmap2=False) + self.assertEqual(retval, 3 << 16) + + text = self.log_fancy_to_string(m) + self.assertEqual(text, """ +Memory: +0x00010000: 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F |................| +* +0x00020000: 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F | !"#$%&'()*+,-./| +* +0x00030000: 48 65 6C 6C 6F 20 57 6F 72 6C 64 21 0A 00 00 00 |Hello World!....| +* +0x00040000: 46 6F 6F 20 42 61 72 0A 00 00 00 00 00 00 00 00 |Foo Bar.........| +* +0x00050000: 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F |PQRSTUVWXYZ[\]^_| +* +0x00060000: 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F |`abcdefghijklmno| +* +0x00070000: 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F |pqrstuvwxyz{|}~.| +* +0x00080000: 80 81 82 83 84 85 86 87 88 89 8A 8B 8C 8D 8E 8F |................| +* +0x00090000: 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F |................| +* +0x000A0000: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF |................| +* +0x000B0000: B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF |................| +* +0x000C0000: C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF |................| +* +0x000D0000: D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF |................| +* +0x000E0000: E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF |................| +* +0x000F0000: F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF |................| +""") + + bytes_ = m.get_ctypes(3 << 16, 16, True) + + self.assertIsInstance(bytes_, ctypes.c_ubyte * 16) + + for i in range(16): + bytes_[i] = i * 0x11 + + text = self.log_fancy_to_string(m) + self.assertEqual(text, """ +Memory: +0x00010000: 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F |................| +* +0x00020000: 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F | !"#$%&'()*+,-./| +* +0x00030000: 00 11 22 33 44 55 66 77 88 99 AA BB CC DD EE FF |.."3DUfw........| +* +0x00040000: 46 6F 6F 20 42 61 72 0A 00 00 00 00 00 00 00 00 |Foo Bar.........| +* +0x00050000: 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F |PQRSTUVWXYZ[\]^_| +* +0x00060000: 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F |`abcdefghijklmno| +* +0x00070000: 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F |pqrstuvwxyz{|}~.| +* +0x00080000: 80 81 82 83 84 85 86 87 88 89 8A 8B 8C 8D 8E 8F |................| +* +0x00090000: 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F |................| +* +0x000A0000: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF |................| +* +0x000B0000: B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF |................| +* +0x000C0000: C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF |................| +* +0x000D0000: D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF |................| +* +0x000E0000: E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF |................| +* +0x000F0000: F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF |................| +""") + + # assert file wasn't modified by memory write + file.seek(2 << 16) + bytes_ = file.read(16) + self.assertEqual(bytes_, b"Hello World!\n\0\0\0") + if __name__ == '__main__': unittest.main() -- 2.30.2