mapi: Add ABI-tag note.

TLS requires kernel >= 2.4.20.  Per glapi.

diff --git a/src/mapi/mapi/entry_x86-64_tls.h b/src/mapi/mapi/entry_x86-64_tls.h
index 2fbe73b5b3277cce28f2b5743b73121191df9d09..cc3d5a8d7ea07631a59b12f3efe7800160d876c2 100644 (file)
--- a/src/mapi/mapi/entry_x86-64_tls.h
+++ b/src/mapi/mapi/entry_x86-64_tls.h
@@ -30,6 +30,19 @@
 #include "u_execmem.h"
 #include "u_macros.h"
 
+#ifdef __linux__
+__asm__(".section .note.ABI-tag, \"a\"\n\t"
+        ".p2align 2\n\t"
+        ".long 1f - 0f\n\t"      /* name length */
+        ".long 3f - 2f\n\t"      /* data length */
+        ".long 1\n\t"            /* note length */
+        "0: .asciz \"GNU\"\n\t"  /* vendor name */
+        "1: .p2align 2\n\t"
+        "2: .long 0\n\t"         /* note data: the ABI tag */
+        ".long 2,4,20\n\t"       /* Minimum kernel version w/TLS */
+        "3: .p2align 2\n\t");    /* pad out section */
+#endif /* __linux__ */
+
 __asm__(".text");
 
 __asm__("x86_64_current_tls:\n\t"

diff --git a/src/mapi/mapi/entry_x86_tls.h b/src/mapi/mapi/entry_x86_tls.h
index d4f7d98cf120385148e8f308a2e3885f0c375fc6..9a1f6e4ec4b548335c9c54682241b5f442070c10 100644 (file)
--- a/src/mapi/mapi/entry_x86_tls.h
+++ b/src/mapi/mapi/entry_x86_tls.h
@@ -30,6 +30,19 @@
 #include "u_execmem.h"
 #include "u_macros.h"
 
+#ifdef __linux__
+__asm__(".section .note.ABI-tag, \"a\"\n\t"
+        ".p2align 2\n\t"
+        ".long 1f - 0f\n\t"      /* name length */
+        ".long 3f - 2f\n\t"      /* data length */
+        ".long 1\n\t"            /* note length */
+        "0: .asciz \"GNU\"\n\t"  /* vendor name */
+        "1: .p2align 2\n\t"
+        "2: .long 0\n\t"         /* note data: the ABI tag */
+        ".long 2,4,20\n\t"       /* Minimum kernel version w/TLS */
+        "3: .p2align 2\n\t");    /* pad out section */
+#endif /* __linux__ */
+
 __asm__(".text");
 
 __asm__("x86_current_tls:\n\t"