| ... | @@ -1041,63 +1041,6 @@ pub fn uname(uts: *utsname) usize { | ... | @@ -1041,63 +1041,6 @@ pub fn uname(uts: *utsname) usize { |
| 1041 | return syscall1(SYS_uname, @ptrToInt(uts)); | 1041 | return syscall1(SYS_uname, @ptrToInt(uts)); |
| 1042 | } | 1042 | } |
| 1043 | | 1043 | |
| 1044 | // XXX: This should be weak | | |
| 1045 | extern const __ehdr_start: elf.Ehdr; | | |
| 1046 | | | |
| 1047 | pub fn dl_iterate_phdr(comptime T: type, callback: extern fn (info: *dl_phdr_info, size: usize, data: ?*T) i32, data: ?*T) isize { | | |
| 1048 | if (builtin.link_libc) { | | |
| 1049 | return std.c.dl_iterate_phdr(@ptrCast(std.c.dl_iterate_phdr_callback, callback), @ptrCast(?*c_void, data)); | | |
| 1050 | } | | |
| 1051 | | | |
| 1052 | const elf_base = @ptrToInt(&__ehdr_start); | | |
| 1053 | const n_phdr = __ehdr_start.e_phnum; | | |
| 1054 | const phdrs = (@intToPtr([*]elf.Phdr, elf_base + __ehdr_start.e_phoff))[0..n_phdr]; | | |
| 1055 | | | |
| 1056 | var it = dl.linkmap_iterator(phdrs) catch return 0; | | |
| 1057 | | | |
| 1058 | // The executable has no dynamic link segment, create a single entry for | | |
| 1059 | // the whole ELF image | | |
| 1060 | if (it.end()) { | | |
| 1061 | var info = dl_phdr_info{ | | |
| 1062 | .dlpi_addr = elf_base, | | |
| 1063 | .dlpi_name = "/proc/self/exe", | | |
| 1064 | .dlpi_phdr = @intToPtr([*]elf.Phdr, elf_base + __ehdr_start.e_phoff), | | |
| 1065 | .dlpi_phnum = __ehdr_start.e_phnum, | | |
| 1066 | }; | | |
| 1067 | | | |
| 1068 | return callback(&info, @sizeOf(dl_phdr_info), data); | | |
| 1069 | } | | |
| 1070 | | | |
| 1071 | // Last return value from the callback function | | |
| 1072 | var last_r: isize = 0; | | |
| 1073 | while (it.next()) |entry| { | | |
| 1074 | var dlpi_phdr: usize = undefined; | | |
| 1075 | var dlpi_phnum: u16 = undefined; | | |
| 1076 | | | |
| 1077 | if (entry.l_addr != 0) { | | |
| 1078 | const elf_header = @intToPtr(*elf.Ehdr, entry.l_addr); | | |
| 1079 | dlpi_phdr = entry.l_addr + elf_header.e_phoff; | | |
| 1080 | dlpi_phnum = elf_header.e_phnum; | | |
| 1081 | } else { | | |
| 1082 | // This is the running ELF image | | |
| 1083 | dlpi_phdr = elf_base + __ehdr_start.e_phoff; | | |
| 1084 | dlpi_phnum = __ehdr_start.e_phnum; | | |
| 1085 | } | | |
| 1086 | | | |
| 1087 | var info = dl_phdr_info{ | | |
| 1088 | .dlpi_addr = entry.l_addr, | | |
| 1089 | .dlpi_name = entry.l_name, | | |
| 1090 | .dlpi_phdr = @intToPtr([*]elf.Phdr, dlpi_phdr), | | |
| 1091 | .dlpi_phnum = dlpi_phnum, | | |
| 1092 | }; | | |
| 1093 | | | |
| 1094 | last_r = callback(&info, @sizeOf(dl_phdr_info), data); | | |
| 1095 | if (last_r != 0) break; | | |
| 1096 | } | | |
| 1097 | | | |
| 1098 | return last_r; | | |
| 1099 | } | | |
| 1100 | | | |
| 1101 | pub fn io_uring_setup(entries: u32, p: *io_uring_params) usize { | 1044 | pub fn io_uring_setup(entries: u32, p: *io_uring_params) usize { |
| 1102 | return syscall2(SYS_io_uring_setup, entries, @ptrToInt(p)); | 1045 | return syscall2(SYS_io_uring_setup, entries, @ptrToInt(p)); |
| 1103 | } | 1046 | } |
LemonBoy <thatlemon@gmail.com> 2020-01-29 00:08:01+01:00
Andrew Kelley <andrew@ziglang.org> 2020-01-29 12:05:36-05:00