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alexrpalexrp
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glibc: Fix stub libraries containing unwanted symbols.
Closes #8096.
1 parent 787020b commit 85a6b75

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-47
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+35
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‎src/glibc.zig

Lines changed: 35 additions & 47 deletions
Original file line numberDiff line numberDiff line change
@@ -864,8 +864,8 @@ pub fn buildSharedObjects(comp: *Compilation, prog_node: std.Progress.Node) anye
864864
// Example:
865865
// .balign 4
866866
// .globl _Exit_2_2_5
867-
// .type _Exit_2_2_5, %function;
868-
// .symver _Exit_2_2_5, _Exit@@GLIBC_2.2.5
867+
// .type _Exit_2_2_5, %function
868+
// .symver _Exit_2_2_5, _Exit@@GLIBC_2.2.5, remove
869869
// _Exit_2_2_5: .long 0
870870
const ver_index = versions_buffer[ver_buf_i];
871871
const ver = metadata.all_versions[ver_index];
@@ -876,19 +876,16 @@ pub fn buildSharedObjects(comp: *Compilation, prog_node: std.Progress.Node) anye
876876
const want_default = chosen_def_ver_index != 255 and ver_index == chosen_def_ver_index;
877877
const at_sign_str: []const u8 = if (want_default) "@@" else "@";
878878
if (ver.patch == 0) {
879-
const sym_plus_ver = if (want_default)
880-
sym_name
881-
else
882-
try std.fmt.allocPrint(
883-
arena,
884-
"{s}_GLIBC_{d}_{d}",
885-
.{ sym_name, ver.major, ver.minor },
886-
);
879+
const sym_plus_ver = try std.fmt.allocPrint(
880+
arena,
881+
"{s}_{d}_{d}",
882+
.{ sym_name, ver.major, ver.minor },
883+
);
887884
try stubs_asm.writer().print(
888885
\\.balign {d}
889886
\\.globl {s}
890-
\\.type {s}, %function;
891-
\\.symver {s}, {s}{s}GLIBC_{d}.{d}
887+
\\.type {s}, %function
888+
\\.symver {s}, {s}{s}GLIBC_{d}.{d}, remove
892889
\\{s}: {s} 0
893890
\\
894891
, .{
@@ -904,19 +901,16 @@ pub fn buildSharedObjects(comp: *Compilation, prog_node: std.Progress.Node) anye
904901
wordDirective(target),
905902
});
906903
} else {
907-
const sym_plus_ver = if (want_default)
908-
sym_name
909-
else
910-
try std.fmt.allocPrint(
911-
arena,
912-
"{s}_GLIBC_{d}_{d}_{d}",
913-
.{ sym_name, ver.major, ver.minor, ver.patch },
914-
);
904+
const sym_plus_ver = try std.fmt.allocPrint(
905+
arena,
906+
"{s}_{d}_{d}_{d}",
907+
.{ sym_name, ver.major, ver.minor, ver.patch },
908+
);
915909
try stubs_asm.writer().print(
916910
\\.balign {d}
917911
\\.globl {s}
918-
\\.type {s}, %function;
919-
\\.symver {s}, {s}{s}GLIBC_{d}.{d}.{d}
912+
\\.type {s}, %function
913+
\\.symver {s}, {s}{s}GLIBC_{d}.{d}.{d}, remove
920914
\\{s}: {s} 0
921915
\\
922916
, .{
@@ -1041,9 +1035,9 @@ pub fn buildSharedObjects(comp: *Compilation, prog_node: std.Progress.Node) anye
10411035
// Example:
10421036
// .balign 4
10431037
// .globl environ_2_2_5
1044-
// .type environ_2_2_5, %object;
1045-
// .size environ_2_2_5, 4;
1046-
// .symver environ_2_2_5, environ@@GLIBC_2.2.5
1038+
// .type environ_2_2_5, %object
1039+
// .size environ_2_2_5, 4
1040+
// .symver environ_2_2_5, environ@@GLIBC_2.2.5, remove
10471041
// environ_2_2_5: .fill 4, 1, 0
10481042
const ver_index = versions_buffer[ver_buf_i];
10491043
const ver = metadata.all_versions[ver_index];
@@ -1054,20 +1048,17 @@ pub fn buildSharedObjects(comp: *Compilation, prog_node: std.Progress.Node) anye
10541048
const want_default = chosen_def_ver_index != 255 and ver_index == chosen_def_ver_index;
10551049
const at_sign_str: []const u8 = if (want_default) "@@" else "@";
10561050
if (ver.patch == 0) {
1057-
const sym_plus_ver = if (want_default)
1058-
sym_name
1059-
else
1060-
try std.fmt.allocPrint(
1061-
arena,
1062-
"{s}_GLIBC_{d}_{d}",
1063-
.{ sym_name, ver.major, ver.minor },
1064-
);
1051+
const sym_plus_ver = try std.fmt.allocPrint(
1052+
arena,
1053+
"{s}_{d}_{d}",
1054+
.{ sym_name, ver.major, ver.minor },
1055+
);
10651056
try stubs_asm.writer().print(
10661057
\\.balign {d}
10671058
\\.globl {s}
1068-
\\.type {s}, %object;
1069-
\\.size {s}, {d};
1070-
\\.symver {s}, {s}{s}GLIBC_{d}.{d}
1059+
\\.type {s}, %object
1060+
\\.size {s}, {d}
1061+
\\.symver {s}, {s}{s}GLIBC_{d}.{d}, remove
10711062
\\{s}: .fill {d}, 1, 0
10721063
\\
10731064
, .{
@@ -1085,20 +1076,17 @@ pub fn buildSharedObjects(comp: *Compilation, prog_node: std.Progress.Node) anye
10851076
size,
10861077
});
10871078
} else {
1088-
const sym_plus_ver = if (want_default)
1089-
sym_name
1090-
else
1091-
try std.fmt.allocPrint(
1092-
arena,
1093-
"{s}_GLIBC_{d}_{d}_{d}",
1094-
.{ sym_name, ver.major, ver.minor, ver.patch },
1095-
);
1079+
const sym_plus_ver = try std.fmt.allocPrint(
1080+
arena,
1081+
"{s}_{d}_{d}_{d}",
1082+
.{ sym_name, ver.major, ver.minor, ver.patch },
1083+
);
10961084
try stubs_asm.writer().print(
10971085
\\.balign {d}
10981086
\\.globl {s}
1099-
\\.type {s}, %object;
1100-
\\.size {s}, {d};
1101-
\\.symver {s}, {s}{s}GLIBC_{d}.{d}.{d}
1087+
\\.type {s}, %object
1088+
\\.size {s}, {d}
1089+
\\.symver {s}, {s}{s}GLIBC_{d}.{d}.{d}, remove
11021090
\\{s}: .fill {d}, 1, 0
11031091
\\
11041092
, .{

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