diff options
Diffstat (limited to 'src/cmd/dist/buildruntime.c')
| -rw-r--r-- | src/cmd/dist/buildruntime.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/cmd/dist/buildruntime.c b/src/cmd/dist/buildruntime.c index f46f72d4b..ee867566f 100644 --- a/src/cmd/dist/buildruntime.c +++ b/src/cmd/dist/buildruntime.c @@ -133,12 +133,17 @@ static struct { "// which is where these macros come into play.\n" "// get_tls sets up the temporary and then g and r use it.\n" "//\n" - "// The final wrinkle is that get_tls needs to read from %gs:0,\n" + "// Another wrinkle is that get_tls needs to read from %gs:0,\n" "// but in 8l input it's called 8(GS), because 8l is going to\n" "// subtract 8 from all the offsets, as described above.\n" + "//\n" + "// The final wrinkle is that when generating an ELF .o file for\n" + "// external linking mode, we need to be able to relocate the\n" + "// -8(r) and -4(r) instructions. Tag them with an extra (GS*1)\n" + "// that is ignored by the linker except for that identification.\n" "#define get_tls(r) MOVL 8(GS), r\n" - "#define g(r) -8(r)\n" - "#define m(r) -4(r)\n" + "#define g(r) -8(r)(GS*1)\n" + "#define m(r) -4(r)(GS*1)\n" }, {"386", "", "#define get_tls(r)\n" |