diff options
| author | Ian Romanick <[email protected]> | 2005-04-13 20:59:15 +0000 |
|---|---|---|
| committer | Ian Romanick <[email protected]> | 2005-04-13 20:59:15 +0000 |
| commit | 25fe93f0a11e6f4c8d470441ff91b9cddf7b3023 (patch) | |
| tree | fc8e2b7c9509abef30425ecf49aebaf281614a6f /src/mesa/x86/glapi_x86.S | |
| parent | c604e457d1ebe9a884b0a1fb08af38a0ce486699 (diff) | |
Add TLS support to libGL and, by virtue of using glthread.h and GL_CALL, all
DRI drivers. A TLS enabled libGL can load a TLS or a non-TLS DRI driver,
but a TLS DRI driver requires a TLS enabled libGL.
This fixes bug #1822.
Diffstat (limited to 'src/mesa/x86/glapi_x86.S')
| -rw-r--r-- | src/mesa/x86/glapi_x86.S | 54 |
1 files changed, 50 insertions, 4 deletions
diff --git a/src/mesa/x86/glapi_x86.S b/src/mesa/x86/glapi_x86.S index aee8565a0e1..c0a971bd53b 100644 --- a/src/mesa/x86/glapi_x86.S +++ b/src/mesa/x86/glapi_x86.S @@ -33,7 +33,10 @@ * the symbol visibility mode to 'default'. */ #if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303 -#pragma GCC visibility push(default) +# pragma GCC visibility push(default) +# define HIDDEN(x) .hidden x +#else +# define HIDDEN(x) #endif #ifndef __WIN32__ @@ -64,7 +67,17 @@ # define THREADS #endif -#if defined(PTHREADS) +#ifdef GLX_USE_TLS + +# define GL_STUB(fn,off,fn_alt) \ +ALIGNTEXT16; \ +GLOBL_FN(GL_PREFIX(fn, fn_alt)); \ +GL_PREFIX(fn, fn_alt): \ + CALL(_x86_get_dispatch) ; \ + NOP ; \ + JMP(GL_OFFSET(off)) + +#elif defined(PTHREADS) # define GL_STUB(fn,off,fn_alt) \ ALIGNTEXT16; \ GLOBL_FN(GL_PREFIX(fn, fn_alt)); \ @@ -106,7 +119,16 @@ GL_PREFIX(fn, fn_alt): \ SEG_TEXT -#ifdef PTHREADS +#ifdef GLX_USE_TLS + + GLOBL GLNAME(_x86_get_dispatch) + HIDDEN(GLNAME(_x86_get_dispatch)) +ALIGNTEXT16 +GLNAME(_x86_get_dispatch): + movl %gs:_glapi_tls_Dispatch@NTPOFF, %eax + ret + +#elif defined(PTHREADS) EXTERN GLNAME(_glapi_Dispatch) EXTERN GLNAME(_gl_DispatchTSD) EXTERN GLNAME(pthread_getspecific) @@ -122,7 +144,13 @@ GLNAME(_x86_get_dispatch): EXTERN GLNAME(_glapi_get_dispatch) #endif - ALIGNTEXT16 ; GLOBL GLNAME(gl_dispatch_functions_start) +#if defined( GLX_USE_TLS ) + .section wtext, "awx", @progbits +#endif /* defined( GLX_USE_TLS ) */ + + ALIGNTEXT16 + GLOBL GLNAME(gl_dispatch_functions_start) + HIDDEN(GLNAME(gl_dispatch_functions_start)) GLNAME(gl_dispatch_functions_start): GL_STUB(NewList, _gloffset_NewList, NewList@8) @@ -1120,4 +1148,22 @@ GLNAME(gl_dispatch_functions_start): GL_STUB_ALIAS(PointParameterfSGIS, _gloffset_PointParameterfEXT, PointParameterfSGIS@8, PointParameterfEXT, PointParameterfEXT@8) GL_STUB_ALIAS(PointParameterfvSGIS, _gloffset_PointParameterfvEXT, PointParameterfvSGIS@8, PointParameterfvEXT, PointParameterfvEXT@8) + GLOBL GLNAME(gl_dispatch_functions_end) + HIDDEN(GLNAME(gl_dispatch_functions_end)) + ALIGNTEXT16 +GLNAME(gl_dispatch_functions_end): + +#if defined(GLX_USE_TLS) && defined(__linux__) + .section ".note.ABI-tag", "a" + .p2align 2 + .long 1f - 0f /* name length */ + .long 3f - 2f /* data length */ + .long 1 /* note length */ +0: .asciz "GNU" /* vendor name */ +1: .p2align 2 +2: .long 0 /* note data: the ABI tag */ + .long 2,4,20 /* Minimum kernel version w/TLS */ +3: .p2align 2 /* pad out section */ +#endif /* GLX_USE_TLS */ + #endif /* __WIN32__ */ |