Mesa (main): mapi: Remove usage of USE_ELF_TLS
GitLab Mirror
gitlab-mirror at kemper.freedesktop.org
Sat Jul 30 02:03:35 UTC 2022
Module: Mesa
Branch: main
Commit: 62a68481fa975399d51a6ffec8ca62f3481320a0
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=62a68481fa975399d51a6ffec8ca62f3481320a0
Author: Yonggang Luo <luoyonggang at gmail.com>
Date: Tue Jun 21 17:21:50 2022 +0800
mapi: Remove usage of USE_ELF_TLS
After commit c47fd3dc006 ("windows: Use TLS context/dispatch with shared-glapi")
USE_ELF_TLS are always defined by
pre_args += '-DUSE_ELF_TLS'
So we can remove it safety
Signed-off-by: Yonggang Luo <luoyonggang at gmail.com>
Reviewed-by: Emil Velikov <emil.l.velikov at gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17213>
---
src/mapi/entry.c | 7 +-
src/mapi/entry_ppc64le_tsd.h | 210 ------------------------------------
src/mapi/entry_x86_tsd.h | 155 --------------------------
src/mapi/glapi/gen/gl_SPARC_asm.py | 78 --------------
src/mapi/glapi/gen/gl_x86-64_asm.py | 49 ---------
src/mapi/glapi/gen/gl_x86_asm.py | 4 +-
src/mapi/glapi/glapi.c | 4 -
src/mapi/glapi/glapi.h | 17 ---
src/mapi/glapi/glapi_entrypoint.c | 116 +-------------------
src/mapi/glapi/glapi_priv.h | 10 +-
src/mapi/glapi/meson.build | 2 -
src/mapi/mapi_glapi.c | 4 -
src/mapi/u_current.c | 114 --------------------
src/mapi/u_current.h | 20 ----
14 files changed, 6 insertions(+), 784 deletions(-)
diff --git a/src/mapi/entry.c b/src/mapi/entry.c
index 5ebd85011c6..a2afab6ddc6 100644
--- a/src/mapi/entry.c
+++ b/src/mapi/entry.c
@@ -46,18 +46,13 @@
#define ENTRY_CURRENT_TABLE_GET U_STRINGIFY(u_current_get_table_internal)
#endif
-/* REALLY_INITIAL_EXEC implies USE_ELF_TLS and __GNUC__ */
+/* REALLY_INITIAL_EXEC implies __GLIBC__ */
#if defined(USE_X86_ASM) && defined(REALLY_INITIAL_EXEC)
#include "entry_x86_tls.h"
-#elif defined(USE_X86_ASM) && !defined(GLX_X86_READONLY_TEXT) && defined(__GNUC__)
-#include "entry_x86_tsd.h"
#elif defined(USE_X86_64_ASM) && defined(REALLY_INITIAL_EXEC)
#include "entry_x86-64_tls.h"
#elif defined(USE_PPC64LE_ASM) && UTIL_ARCH_LITTLE_ENDIAN && defined(REALLY_INITIAL_EXEC)
#include "entry_ppc64le_tls.h"
-/* ppc64le non-IE TSD stubs are possible but not currently implemented */
-#elif defined(USE_PPC64LE_ASM) && UTIL_ARCH_LITTLE_ENDIAN && !defined(USE_ELF_TLS) && defined(__GNUC__)
-#include "entry_ppc64le_tsd.h"
#else
static inline const struct _glapi_table *
diff --git a/src/mapi/entry_ppc64le_tsd.h b/src/mapi/entry_ppc64le_tsd.h
deleted file mode 100644
index a583b93e5e2..00000000000
--- a/src/mapi/entry_ppc64le_tsd.h
+++ /dev/null
@@ -1,210 +0,0 @@
-/*
- * Mesa 3-D graphics library
- *
- * Copyright (C) 2017 Red Hat
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors:
- * Ben Crocker <bcrocker at redhat.com>
- */
-
-#ifdef HAVE_FUNC_ATTRIBUTE_VISIBILITY
-#define HIDDEN __attribute__((visibility("hidden")))
-#else
-#define HIDDEN
-#endif
-
-// NOTE: These must be powers of two:
-#define PPC64LE_ENTRY_SIZE 256
-#define PPC64LE_PAGE_ALIGN 65536
-#if ((PPC64LE_ENTRY_SIZE & (PPC64LE_ENTRY_SIZE - 1)) != 0)
-#error PPC64LE_ENTRY_SIZE must be a power of two!
-#endif
-#if ((PPC64LE_PAGE_ALIGN & (PPC64LE_PAGE_ALIGN - 1)) != 0)
-#error PPC64LE_PAGE_ALIGN must be a power of two!
-#endif
-
-__asm__(".text\n"
- ".balign " U_STRINGIFY(PPC64LE_ENTRY_SIZE) "\n"
- "ppc64le_entry_start:");
-
-#define STUB_ASM_ENTRY(func) \
- ".globl " func "\n" \
- ".type " func ", @function\n" \
- ".balign " U_STRINGIFY(PPC64LE_ENTRY_SIZE) "\n" \
- func ":\n\t" \
- " addis 2, 12, .TOC.-" func "@ha\n\t" \
- " addi 2, 2, .TOC.-" func "@l\n\t" \
- " .localentry " func ", .-" func "\n\t"
-
-#define STUB_ASM_CODE(slot) \
- " addis 11, 2, " ENTRY_CURRENT_TABLE "@got at ha\n\t" \
- " ld 11, " ENTRY_CURRENT_TABLE "@got at l(11)\n\t" \
- " ld 11, 0(11)\n\t" \
- " cmpldi 11, 0\n\t" \
- " beq 2000f\n" \
- "1050:\n\t" \
- " ld 12, " slot "*8(11)\n\t" \
- " mtctr 12\n\t" \
- " bctr\n" \
- "2000:\n\t" \
- " mflr 0\n\t" \
- " std 0, 16(1)\n\t" \
- " std 2, 40(1)\n\t" \
- " stdu 1, -144(1)\n\t" \
- " std 3, 56(1)\n\t" \
- " std 4, 64(1)\n\t" \
- " std 5, 72(1)\n\t" \
- " std 6, 80(1)\n\t" \
- " std 7, 88(1)\n\t" \
- " std 8, 96(1)\n\t" \
- " std 9, 104(1)\n\t" \
- " std 10, 112(1)\n\t" \
- " std 12, 128(1)\n\t" \
- " addis 12, 2, " ENTRY_CURRENT_TABLE_GET "@got at ha\n\t" \
- " ld 12, " ENTRY_CURRENT_TABLE_GET "@got at l(12)\n\t" \
- " mtctr 12\n\t" \
- " bctrl\n\t" \
- " ld 2, 144+40(1)\n\t" \
- " mr 11, 3\n\t" \
- " ld 3, 56(1)\n\t" \
- " ld 4, 64(1)\n\t" \
- " ld 5, 72(1)\n\t" \
- " ld 6, 80(1)\n\t" \
- " ld 7, 88(1)\n\t" \
- " ld 8, 96(1)\n\t" \
- " ld 9, 104(1)\n\t" \
- " ld 10, 112(1)\n\t" \
- " ld 12, 128(1)\n\t" \
- " addi 1, 1, 144\n\t" \
- " ld 0, 16(1)\n\t" \
- " mtlr 0\n\t" \
- " b 1050b\n"
-
-#define MAPI_TMP_STUB_ASM_GCC
-#include "mapi_tmp.h"
-
-#ifndef MAPI_MODE_BRIDGE
-
-#include <string.h>
-#include "u_execmem.h"
-
-void
-entry_patch_public(void)
-{
-}
-
-extern char
-ppc64le_entry_start[] HIDDEN;
-
-mapi_func
-entry_get_public(int slot)
-{
- return (mapi_func) (ppc64le_entry_start + slot * PPC64LE_ENTRY_SIZE);
-}
-
-static const uint32_t code_templ[] = {
- // This should be functionally the same code as would be generated from
- // the STUB_ASM_CODE macro, but defined as a buffer.
- // This is used to generate new dispatch stubs. Mesa will copy this
- // data to the dispatch stub, and then it will patch the slot number and
- // any addresses that it needs to.
- // NOTE!!! NOTE!!! NOTE!!!
- // This representation is correct for both little- and big-endian systems.
- // However, more work needs to be done for big-endian Linux because it
- // adheres to an older, AIX-compatible ABI that uses function descriptors.
- // 1000:
- 0x7C0802A6, // <ENTRY+000>: mflr 0
- 0xF8010010, // <ENTRY+004>: std 0, 16(1)
- 0xE96C0098, // <ENTRY+008>: ld 11, 9000f-1000b+0(12)
- 0xE96B0000, // <ENTRY+012>: ld 11, 0(11)
- 0x282B0000, // <ENTRY+016>: cmpldi 11, 0
- 0x41820014, // <ENTRY+020>: beq 2000f
- // 1050:
- 0xE80C00A8, // <ENTRY+024>: ld 0, 9000f-1000b+16(12)
- 0x7D8B002A, // <ENTRY+028>: ldx 12, 11, 0
- 0x7D8903A6, // <ENTRY+032>: mtctr 12
- 0x4E800420, // <ENTRY+036>: bctr
- // 2000:
- 0xF8410028, // <ENTRY+040>: std 2, 40(1)
- 0xF821FF71, // <ENTRY+044>: stdu 1, -144(1)
- 0xF8610038, // <ENTRY+048>: std 3, 56(1)
- 0xF8810040, // <ENTRY+052>: std 4, 64(1)
- 0xF8A10048, // <ENTRY+056>: std 5, 72(1)
- 0xF8C10050, // <ENTRY+060>: std 6, 80(1)
- 0xF8E10058, // <ENTRY+064>: std 7, 88(1)
- 0xF9010060, // <ENTRY+068>: std 8, 96(1)
- 0xF9210068, // <ENTRY+072>: std 9, 104(1)
- 0xF9410070, // <ENTRY+076>: std 10, 112(1)
- 0xF9810080, // <ENTRY+080>: std 12, 128(1)
- 0xE98C00A0, // <ENTRY+084>: ld 12, 9000f-1000b+8(12)
- 0x7D8903A6, // <ENTRY+088>: mtctr 12
- 0x4E800421, // <ENTRY+092>: bctrl
- 0x7C6B1B78, // <ENTRY+096>: mr 11, 3
- 0xE8610038, // <ENTRY+100>: ld 3, 56(1)
- 0xE8810040, // <ENTRY+104>: ld 4, 64(1)
- 0xE8A10048, // <ENTRY+108>: ld 5, 72(1)
- 0xE8C10050, // <ENTRY+112>: ld 6, 80(1)
- 0xE8E10058, // <ENTRY+116>: ld 7, 88(1)
- 0xE9010060, // <ENTRY+120>: ld 8, 96(1)
- 0xE9210068, // <ENTRY+124>: ld 9, 104(1)
- 0xE9410070, // <ENTRY+128>: ld 10, 112(1)
- 0xE9810080, // <ENTRY+132>: ld 12, 128(1)
- 0x38210090, // <ENTRY+136>: addi 1, 1, 144
- 0xE8010010, // <ENTRY+140>: ld 0, 16(1)
- 0x7C0803A6, // <ENTRY+144>: mtlr 0
- 0x4BFFFF84, // <ENTRY+148>: b 1050b
- // 9000:
- 0, 0, // <ENTRY+152>: .quad ENTRY_CURRENT_TABLE
- 0, 0, // <ENTRY+160>: .quad ENTRY_CURRENT_TABLE_GET
- 0, 0 // <ENTRY+168>: .quad <slot>*8
-};
-static const uint64_t TEMPLATE_OFFSET_CURRENT_TABLE = sizeof(code_templ) - 3*8;
-static const uint64_t TEMPLATE_OFFSET_CURRENT_TABLE_GET = sizeof(code_templ) - 2*8;
-static const uint64_t TEMPLATE_OFFSET_SLOT = sizeof(code_templ) - 1*8;
-
-void
-entry_patch(mapi_func entry, int slot)
-{
- char *code = (char *) entry;
- *((uint64_t *) (code + TEMPLATE_OFFSET_CURRENT_TABLE)) = (uint64_t) ENTRY_CURRENT_TABLE;
- *((uint64_t *) (code + TEMPLATE_OFFSET_CURRENT_TABLE_GET)) = (uint64_t) ENTRY_CURRENT_TABLE_GET;
- *((uint64_t *) (code + TEMPLATE_OFFSET_SLOT)) = slot * sizeof(mapi_func);
-}
-
-mapi_func
-entry_generate(int slot)
-{
- char *code;
- mapi_func entry;
-
- code = u_execmem_alloc(sizeof(code_templ));
- if (!code)
- return NULL;
-
- memcpy(code, code_templ, sizeof(code_templ));
-
- entry = (mapi_func) code;
- entry_patch(entry, slot);
-
- return entry;
-}
-
-#endif /* MAPI_MODE_BRIDGE */
diff --git a/src/mapi/entry_x86_tsd.h b/src/mapi/entry_x86_tsd.h
deleted file mode 100644
index 2aa724a70f3..00000000000
--- a/src/mapi/entry_x86_tsd.h
+++ /dev/null
@@ -1,155 +0,0 @@
-/*
- * Mesa 3-D graphics library
- *
- * Copyright (C) 2010 LunarG Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors:
- * Chia-I Wu <olv at lunarg.com>
- */
-
-#ifdef __CET__
-#define ENDBR "endbr32\n\t"
-#else
-#define ENDBR
-#endif
-
-#ifdef HAVE_FUNC_ATTRIBUTE_VISIBILITY
-#define HIDDEN __attribute__((visibility("hidden")))
-#else
-#define HIDDEN
-#endif
-
-#define X86_ENTRY_SIZE 64
-
-__asm__(".text\n");
-
-__asm__("x86_got:\n\t"
- "call 1f\n"
- "1:\n\t"
- "popl %eax\n\t"
- "addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %eax\n\t"
- "ret");
-
-__asm__(".balign 32\n"
- "x86_entry_start:");
-
-#define STUB_ASM_ENTRY(func) \
- ".globl " func "\n" \
- ".type " func ", @function\n" \
- ".balign 32\n" \
- func ":"
-
-#define LOC_BEGIN_SET_ECX
-#define LOC_END_SET_ECX
-#define LOC_END_JMP
-
-#define STUB_ASM_CODE(slot) \
- ENDBR \
- LOC_BEGIN_SET_ECX \
- "call 1f\n\t" \
- "1:\n\t" \
- "popl %ecx\n\t" \
- "addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ecx\n\t" \
- LOC_END_SET_ECX \
- "movl _glapi_Dispatch at GOT(%ecx), %eax\n\t" \
- "mov (%eax), %eax\n\t" \
- "testl %eax, %eax\n\t" \
- "jne 1f\n\t" \
- "push %ebx\n\t" \
- "movl %ecx, %ebx\n\t" \
- "call " ENTRY_CURRENT_TABLE_GET "@PLT\n\t" \
- "popl %ebx\n\t" \
- "1:\n\t" \
- "jmp *(4 * " slot ")(%eax)\n\t" \
- LOC_END_JMP
-
-#define MAPI_TMP_STUB_ASM_GCC
-#include "mapi_tmp.h"
-
-#ifndef MAPI_MODE_BRIDGE
-
-__asm__(".balign 32\n"
- "x86_entry_end:");
-
-#undef LOC_BEGIN_SET_ECX
-#undef LOC_END_SET_ECX
-#undef LOC_END_JMP
-#define LOC_BEGIN_SET_ECX "jmp set_ecx\n\t"
-#define LOC_END_SET_ECX "set_ecx:movl $0x12345678, %ecx\n\tloc_end_set_ecx:\n\t"
-#define LOC_END_JMP "loc_end_jmp:"
-
-/* Any number big enough works. This is to make sure the final
- * jmp is a long jmp */
-__asm__(STUB_ASM_CODE("10000"));
-
-extern const char loc_end_set_ecx[] HIDDEN;
-extern const char loc_end_jmp[] HIDDEN;
-
-#include <string.h>
-#include "u_execmem.h"
-
-extern unsigned long
-x86_got();
-
-extern const char x86_entry_start[] HIDDEN;
-extern const char x86_entry_end[] HIDDEN;
-
-void
-entry_patch_public(void)
-{
-}
-
-mapi_func
-entry_get_public(int slot)
-{
- return (mapi_func) (x86_entry_start + slot * X86_ENTRY_SIZE);
-}
-
-void
-entry_patch(mapi_func entry, int slot)
-{
- char *code = (char *) entry;
- int offset = loc_end_jmp - x86_entry_end - sizeof(unsigned long);
- *((unsigned long *) (code + offset)) = slot * sizeof(mapi_func);
-}
-
-mapi_func
-entry_generate(int slot)
-{
- const char *code_templ = x86_entry_end;
- char *code;
- mapi_func entry;
-
- code = u_execmem_alloc(X86_ENTRY_SIZE);
- if (!code)
- return NULL;
-
- memcpy(code, code_templ, X86_ENTRY_SIZE);
- entry = (mapi_func) code;
- int ecx_value_off = loc_end_set_ecx - x86_entry_end - sizeof(unsigned long);
- *((unsigned long *) (code + ecx_value_off)) = x86_got();
-
- entry_patch(entry, slot);
-
- return entry;
-}
-
-#endif /* MAPI_MODE_BRIDGE */
diff --git a/src/mapi/glapi/gen/gl_SPARC_asm.py b/src/mapi/glapi/gen/gl_SPARC_asm.py
index d2f9fcd5cf4..795be406f3b 100644
--- a/src/mapi/glapi/gen/gl_SPARC_asm.py
+++ b/src/mapi/glapi/gen/gl_SPARC_asm.py
@@ -75,7 +75,6 @@ class PrintGenericStubs(gl_XML.gl_print_base):
print('\t add\t%o7, %g2, %g2')
print('\t.size\t__glapi_sparc_get_pc, .-__glapi_sparc_get_pc')
print('')
- print('#ifdef USE_ELF_TLS')
print('')
print('\tGLOBL_FN(__glapi_sparc_get_dispatch)')
print('\tHIDDEN(__glapi_sparc_get_dispatch)')
@@ -120,83 +119,6 @@ class PrintGenericStubs(gl_XML.gl_print_base):
print('\t sethi\tGL_OFF(off), %g3;\t\t\t\\')
print('\t.size\tfn,.-fn;')
print('')
- print('#elif defined(HAVE_PTHREAD)')
- print('')
- print('\t/* 64-bit 0x00 --> sethi %hh(_glapi_Dispatch), %g1 */')
- print('\t/* 64-bit 0x04 --> sethi %lm(_glapi_Dispatch), %g2 */')
- print('\t/* 64-bit 0x08 --> or %g1, %hm(_glapi_Dispatch), %g1 */')
- print('\t/* 64-bit 0x0c --> sllx %g1, 32, %g1 */')
- print('\t/* 64-bit 0x10 --> add %g1, %g2, %g1 */')
- print('\t/* 64-bit 0x14 --> ldx [%g1 + %lo(_glapi_Dispatch)], %g1 */')
- print('')
- print('\t/* 32-bit 0x00 --> sethi %hi(_glapi_Dispatch), %g1 */')
- print('\t/* 32-bit 0x04 --> ld [%g1 + %lo(_glapi_Dispatch)], %g1 */')
- print('')
- print('\t.data')
- print('\t.align\t32')
- print('')
- print('\tGLOBL_FN(__glapi_sparc_pthread_stub)')
- print('\tHIDDEN(__glapi_sparc_pthread_stub)')
- print('__glapi_sparc_pthread_stub: /* Call offset in %g3 */')
- print('\tmov\t%o7, %g1')
- print('\tsethi\t%hi(_GLOBAL_OFFSET_TABLE_-4), %g2')
- print('\tcall\t__glapi_sparc_get_pc')
- print('\t add\t%g2, %lo(_GLOBAL_OFFSET_TABLE_+4), %g2')
- print('\tmov\t%g1, %o7')
- print('\tsethi\t%hi(_glapi_Dispatch), %g1')
- print('\tor\t%g1, %lo(_glapi_Dispatch), %g1')
- print('\tsrl\t%g3, 10, %g3')
- print('\tGL_LL\t[%g2+%g1], %g2')
- print('\tGL_LL\t[%g2], %g1')
- print('\tcmp\t%g1, 0')
- print('\tbe\t2f')
- print('\t nop')
- print('1:\tGL_LL\t[%g1 + %g3], %g1')
- print('\tjmp\t%g1')
- print('\t nop')
- print('2:\tsave\t%sp, GL_STACK_SIZE, %sp')
- print('\tmov\t%g3, %l0')
- print('\tcall\t_glapi_get_dispatch')
- print('\t nop')
- print('\tmov\t%o0, %g1')
- print('\tmov\t%l0, %g3')
- print('\tba\t1b')
- print('\t restore %g0, %g0, %g0')
- print('\t.size\t__glapi_sparc_pthread_stub, .-__glapi_sparc_pthread_stub')
- print('')
- print('#define GL_STUB(fn, off)\t\t\t\\')
- print('\tGLOBL_FN(fn);\t\t\t\t\\')
- print('fn:\tba\t__glapi_sparc_pthread_stub;\t\\')
- print('\t sethi\tGL_OFF(off), %g3;\t\t\\')
- print('\t.size\tfn,.-fn;')
- print('')
- print('#else /* Non-threaded version. */')
- print('')
- print('\t.type __glapi_sparc_nothread_stub, @function')
- print('__glapi_sparc_nothread_stub: /* Call offset in %g3 */')
- print('\tmov\t%o7, %g1')
- print('\tsethi\t%hi(_GLOBAL_OFFSET_TABLE_-4), %g2')
- print('\tcall\t__glapi_sparc_get_pc')
- print('\t add\t%g2, %lo(_GLOBAL_OFFSET_TABLE_+4), %g2')
- print('\tmov\t%g1, %o7')
- print('\tsrl\t%g3, 10, %g3')
- print('\tsethi\t%hi(_glapi_Dispatch), %g1')
- print('\tor\t%g1, %lo(_glapi_Dispatch), %g1')
- print('\tGL_LL\t[%g2+%g1], %g2')
- print('\tGL_LL\t[%g2], %g1')
- print('\tGL_LL\t[%g1 + %g3], %g1')
- print('\tjmp\t%g1')
- print('\t nop')
- print('\t.size\t__glapi_sparc_nothread_stub, .-__glapi_sparc_nothread_stub')
- print('')
- print('#define GL_STUB(fn, off)\t\t\t\\')
- print('\tGLOBL_FN(fn);\t\t\t\t\\')
- print('fn:\tba\t__glapi_sparc_nothread_stub;\t\\')
- print('\t sethi\tGL_OFF(off), %g3;\t\t\\')
- print('\t.size\tfn,.-fn;')
- print('')
- print('#endif')
- print('')
print('#define GL_STUB_ALIAS(fn, alias) \\')
print(' .globl fn; \\')
print(' .set fn, alias')
diff --git a/src/mapi/glapi/gen/gl_x86-64_asm.py b/src/mapi/glapi/gen/gl_x86-64_asm.py
index 487843dd000..5d5a265e2a1 100644
--- a/src/mapi/glapi/gen/gl_x86-64_asm.py
+++ b/src/mapi/glapi/gen/gl_x86-64_asm.py
@@ -136,32 +136,12 @@ class PrintGenericStubs(gl_XML.gl_print_base):
print('')
print('\t.text')
print('')
- print('#ifdef USE_ELF_TLS')
- print('')
print('_x86_64_get_dispatch:')
print('\tmovq\t_glapi_tls_Dispatch at GOTTPOFF(%rip), %rax')
print('\tmovq\t%fs:(%rax), %rax')
print('\tret')
print('\t.size\t_x86_64_get_dispatch, .-_x86_64_get_dispatch')
print('')
- print('#elif defined(HAVE_PTHREAD)')
- print('')
- print('\t.extern\t_glapi_Dispatch')
- print('\t.extern\t_gl_DispatchTSD')
- print('\t.extern\tpthread_getspecific')
- print('')
- print('\t.p2align\t4,,15')
- print('_x86_64_get_dispatch:')
- print('\tmovq\t_gl_DispatchTSD at GOTPCREL(%rip), %rax')
- print('\tmovl\t(%rax), %edi')
- print('\tjmp\tpthread_getspecific at PLT')
- print('')
- print('#else')
- print('')
- print('\t.extern\t_glapi_get_dispatch')
- print('')
- print('#endif')
- print('')
return
@@ -220,38 +200,9 @@ class PrintGenericStubs(gl_XML.gl_print_base):
if not f.is_static_entry_point(f.name):
print('\tHIDDEN(GL_PREFIX(%s))' % (name))
print('GL_PREFIX(%s):' % (name))
- print('#if defined(USE_ELF_TLS)')
print('\tcall\t_x86_64_get_dispatch at PLT')
print('\tmovq\t%u(%%rax), %%r11' % (f.offset * 8))
print('\tjmp\t*%r11')
- print('#elif defined(HAVE_PTHREAD)')
-
- save_all_regs(registers)
- print('\tcall\t_x86_64_get_dispatch at PLT')
- restore_all_regs(registers)
-
- if f.offset == 0:
- print('\tmovq\t(%rax), %r11')
- else:
- print('\tmovq\t%u(%%rax), %%r11' % (f.offset * 8))
-
- print('\tjmp\t*%r11')
-
- print('#else')
- print('\tmovq\t_glapi_Dispatch(%rip), %rax')
- print('\ttestq\t%rax, %rax')
- print('\tje\t1f')
- print('\tmovq\t%u(%%rax), %%r11' % (f.offset * 8))
- print('\tjmp\t*%r11')
- print('1:')
-
- save_all_regs(registers)
- print('\tcall\t_glapi_get_dispatch')
- restore_all_regs(registers)
-
- print('\tmovq\t%u(%%rax), %%r11' % (f.offset * 8))
- print('\tjmp\t*%r11')
- print('#endif /* defined(USE_ELF_TLS) */')
print('\t.size\tGL_PREFIX(%s), .-GL_PREFIX(%s)' % (name, name))
print('')
diff --git a/src/mapi/glapi/gen/gl_x86_asm.py b/src/mapi/glapi/gen/gl_x86_asm.py
index 057aa54ba3f..1196b3ab98c 100644
--- a/src/mapi/glapi/gen/gl_x86_asm.py
+++ b/src/mapi/glapi/gen/gl_x86_asm.py
@@ -128,9 +128,9 @@ class PrintGenericStubs(gl_XML.gl_print_base):
print('#endif')
print('')
- print('#if defined( USE_ELF_TLS ) && !defined( GLX_X86_READONLY_TEXT )')
+ print('#if !defined( GLX_X86_READONLY_TEXT )')
print('\t\t.section\twtext, "awx", @progbits')
- print('#endif /* defined( USE_ELF_TLS ) */')
+ print('#endif /* !defined( GLX_X86_READONLY_TEXT ) */')
print('')
print('\t\tALIGNTEXT16')
diff --git a/src/mapi/glapi/glapi.c b/src/mapi/glapi/glapi.c
index 53cfd7f087a..1c0a75a8b1c 100644
--- a/src/mapi/glapi/glapi.c
+++ b/src/mapi/glapi/glapi.c
@@ -33,22 +33,18 @@
* u_current.c.
*/
-#ifdef USE_ELF_TLS
/* not used, but defined for compatibility */
const struct _glapi_table *_glapi_Dispatch;
const void *_glapi_Context;
-#endif /* USE_ELF_TLS */
void
_glapi_destroy_multithread(void)
{
- u_current_destroy();
}
void
_glapi_check_multithread(void)
{
- u_current_init();
}
void
diff --git a/src/mapi/glapi/glapi.h b/src/mapi/glapi/glapi.h
index 1903c3054fd..d51ba0ff9ce 100644
--- a/src/mapi/glapi/glapi.h
+++ b/src/mapi/glapi/glapi.h
@@ -77,9 +77,6 @@ typedef void (*_glapi_nop_handler_proc)(const char *name);
struct _glapi_table;
-
-#if defined (USE_ELF_TLS)
-
#if DETECT_OS_WINDOWS
extern __THREAD_INITIAL_EXEC struct _glapi_table * _glapi_tls_Dispatch;
extern __THREAD_INITIAL_EXEC void * _glapi_tls_Context;
@@ -99,20 +96,6 @@ _GLAPI_EXPORT extern const void *_glapi_Context;
# define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) _glapi_tls_Context
#endif
-#else
-
-_GLAPI_EXPORT extern struct _glapi_table *_glapi_Dispatch;
-_GLAPI_EXPORT extern void *_glapi_Context;
-
-#define GET_DISPATCH() \
- (likely(_glapi_Dispatch) ? _glapi_Dispatch : _glapi_get_dispatch())
-
-#define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) \
- (likely(_glapi_Context) ? _glapi_Context : _glapi_get_context())
-
-#endif /* defined (USE_ELF_TLS) */
-
-
_GLAPI_EXPORT void
_glapi_destroy_multithread(void);
diff --git a/src/mapi/glapi/glapi_entrypoint.c b/src/mapi/glapi/glapi_entrypoint.c
index b99819afa0d..e2c4b997c6d 100644
--- a/src/mapi/glapi/glapi_entrypoint.c
+++ b/src/mapi/glapi/glapi_entrypoint.c
@@ -38,12 +38,8 @@
#ifdef USE_X86_ASM
-#if defined( USE_ELF_TLS )
extern GLubyte gl_dispatch_functions_start[];
extern GLubyte gl_dispatch_functions_end[];
-#else
-extern const GLubyte gl_dispatch_functions_start[];
-#endif
#endif /* USE_X86_ASM */
@@ -68,7 +64,7 @@ get_entrypoint_address(unsigned int functionOffset)
static void
init_glapi_relocs( void )
{
-#if defined(USE_ELF_TLS) && !defined(GLX_X86_READONLY_TEXT)
+#if !defined(GLX_X86_READONLY_TEXT)
extern unsigned long _x86_get_dispatch(void);
char run_time_patch[] = {
0x65, 0xa1, 0, 0, 0, 0 /* movl %gs:0,%eax */
@@ -121,12 +117,7 @@ fill_in_entrypoint_offset(_glapi_proc entrypoint, unsigned int offset)
{
GLubyte * const code = (GLubyte *) entrypoint;
-#if defined(USE_ELF_TLS)
*((unsigned int *)(code + 8)) = 4 * offset;
-#else
- *((unsigned int *)(code + 11)) = 4 * offset;
- *((unsigned int *)(code + 22)) = 4 * offset;
-#endif
}
@@ -137,9 +128,7 @@ extern void __glapi_sparc_icache_flush(unsigned int *);
static void
init_glapi_relocs( void )
{
-#if defined(HAVE_PTHREAD) || defined(USE_ELF_TLS)
static const unsigned int template[] = {
-#ifdef USE_ELF_TLS
0x05000000, /* sethi %hi(_glapi_tls_Dispatch), %g2 */
0x8730e00a, /* srl %g3, 10, %g3 */
0x8410a000, /* or %g2, %lo(_glapi_tls_Dispatch), %g2 */
@@ -152,58 +141,12 @@ init_glapi_relocs( void )
#endif
0x81c04000, /* jmp %g1 */
0x01000000, /* nop */
-#else
-#ifdef __arch64__
- 0x03000000, /* 64-bit 0x00 --> sethi %hh(_glapi_Dispatch), %g1 */
- 0x05000000, /* 64-bit 0x04 --> sethi %lm(_glapi_Dispatch), %g2 */
- 0x82106000, /* 64-bit 0x08 --> or %g1, %hm(_glapi_Dispatch), %g1 */
- 0x8730e00a, /* 64-bit 0x0c --> srl %g3, 10, %g3 */
- 0x83287020, /* 64-bit 0x10 --> sllx %g1, 32, %g1 */
- 0x82004002, /* 64-bit 0x14 --> add %g1, %g2, %g1 */
- 0xc2586000, /* 64-bit 0x18 --> ldx [%g1 + %lo(_glapi_Dispatch)], %g1 */
-#else
- 0x03000000, /* 32-bit 0x00 --> sethi %hi(_glapi_Dispatch), %g1 */
- 0x8730e00a, /* 32-bit 0x04 --> srl %g3, 10, %g3 */
- 0xc2006000, /* 32-bit 0x08 --> ld [%g1 + %lo(_glapi_Dispatch)], %g1 */
-#endif
- 0x80a06000, /* --> cmp %g1, 0 */
- 0x02800005, /* --> be +4*5 */
- 0x01000000, /* --> nop */
-#ifdef __arch64__
- 0xc2584003, /* 64-bit --> ldx [%g1 + %g3], %g1 */
-#else
- 0xc2004003, /* 32-bit --> ld [%g1 + %g3], %g1 */
-#endif
- 0x81c04000, /* --> jmp %g1 */
- 0x01000000, /* --> nop */
-#ifdef __arch64__
- 0x9de3bf80, /* 64-bit --> save %sp, -128, %sp */
-#else
- 0x9de3bfc0, /* 32-bit --> save %sp, -64, %sp */
-#endif
- 0xa0100003, /* --> mov %g3, %l0 */
- 0x40000000, /* --> call _glapi_get_dispatch */
- 0x01000000, /* --> nop */
- 0x82100008, /* --> mov %o0, %g1 */
- 0x86100010, /* --> mov %l0, %g3 */
- 0x10bffff7, /* --> ba -4*9 */
- 0x81e80000, /* --> restore */
-#endif
};
-#ifdef USE_ELF_TLS
extern unsigned int __glapi_sparc_tls_stub;
extern unsigned long __glapi_sparc_get_dispatch(void);
unsigned int *code = &__glapi_sparc_tls_stub;
unsigned long dispatch = __glapi_sparc_get_dispatch();
-#else
- extern unsigned int __glapi_sparc_pthread_stub;
- unsigned int *code = &__glapi_sparc_pthread_stub;
- unsigned long dispatch = (unsigned long) &_glapi_Dispatch;
- unsigned long call_dest = (unsigned long ) &_glapi_get_dispatch;
- int idx;
-#endif
-#ifdef USE_ELF_TLS
code[0] = template[0] | (dispatch >> 10);
code[1] = template[1];
__glapi_sparc_icache_flush(&code[0]);
@@ -215,72 +158,20 @@ init_glapi_relocs( void )
__glapi_sparc_icache_flush(&code[4]);
code[6] = template[6];
__glapi_sparc_icache_flush(&code[6]);
-#else
-#if defined(__arch64__)
- code[0] = template[0] | (dispatch >> (32 + 10));
- code[1] = template[1] | ((dispatch & 0xffffffff) >> 10);
- __glapi_sparc_icache_flush(&code[0]);
- code[2] = template[2] | ((dispatch >> 32) & 0x3ff);
- code[3] = template[3];
- __glapi_sparc_icache_flush(&code[2]);
- code[4] = template[4];
- code[5] = template[5];
- __glapi_sparc_icache_flush(&code[4]);
- code[6] = template[6] | (dispatch & 0x3ff);
- idx = 7;
-#else
- code[0] = template[0] | (dispatch >> 10);
- code[1] = template[1];
- __glapi_sparc_icache_flush(&code[0]);
- code[2] = template[2] | (dispatch & 0x3ff);
- idx = 3;
-#endif
- code[idx + 0] = template[idx + 0];
- __glapi_sparc_icache_flush(&code[idx - 1]);
- code[idx + 1] = template[idx + 1];
- code[idx + 2] = template[idx + 2];
- __glapi_sparc_icache_flush(&code[idx + 1]);
- code[idx + 3] = template[idx + 3];
- code[idx + 4] = template[idx + 4];
- __glapi_sparc_icache_flush(&code[idx + 3]);
- code[idx + 5] = template[idx + 5];
- code[idx + 6] = template[idx + 6];
- __glapi_sparc_icache_flush(&code[idx + 5]);
- code[idx + 7] = template[idx + 7];
- code[idx + 8] = template[idx + 8] |
- (((call_dest - ((unsigned long) &code[idx + 8]))
- >> 2) & 0x3fffffff);
- __glapi_sparc_icache_flush(&code[idx + 7]);
- code[idx + 9] = template[idx + 9];
- code[idx + 10] = template[idx + 10];
- __glapi_sparc_icache_flush(&code[idx + 9]);
- code[idx + 11] = template[idx + 11];
- code[idx + 12] = template[idx + 12];
- __glapi_sparc_icache_flush(&code[idx + 11]);
- code[idx + 13] = template[idx + 13];
- __glapi_sparc_icache_flush(&code[idx + 13]);
-#endif
-#endif
}
_glapi_proc
generate_entrypoint(GLuint functionOffset)
{
-#if defined(HAVE_PTHREAD) || defined(USE_ELF_TLS)
static const unsigned int template[] = {
0x07000000, /* sethi %hi(0), %g3 */
0x8210000f, /* mov %o7, %g1 */
0x40000000, /* call */
0x9e100001, /* mov %g1, %o7 */
};
-#ifdef USE_ELF_TLS
extern unsigned int __glapi_sparc_tls_stub;
unsigned long call_dest = (unsigned long ) &__glapi_sparc_tls_stub;
-#else
- extern unsigned int __glapi_sparc_pthread_stub;
- unsigned long call_dest = (unsigned long ) &__glapi_sparc_pthread_stub;
-#endif
unsigned int *code = (unsigned int *) u_execmem_alloc(sizeof(template));
if (code) {
code[0] = template[0] | (functionOffset & 0x3fffff);
@@ -293,7 +184,6 @@ generate_entrypoint(GLuint functionOffset)
__glapi_sparc_icache_flush(&code[2]);
}
return (_glapi_proc) code;
-#endif
}
@@ -310,12 +200,10 @@ fill_in_entrypoint_offset(_glapi_proc entrypoint, GLuint offset)
#else /* USE_*_ASM */
-#if defined(HAVE_PTHREAD) || defined(USE_ELF_TLS)
static void
init_glapi_relocs( void )
{
}
-#endif
_glapi_proc
@@ -340,8 +228,6 @@ fill_in_entrypoint_offset(_glapi_proc entrypoint, GLuint offset)
void
init_glapi_relocs_once( void )
{
-#if defined(HAVE_PTHREAD) || defined(USE_ELF_TLS)
static once_flag flag = ONCE_FLAG_INIT;
call_once(&flag, init_glapi_relocs);
-#endif
}
diff --git a/src/mapi/glapi/glapi_priv.h b/src/mapi/glapi/glapi_priv.h
index ad37c8bfdf3..04d8fd0c2ce 100644
--- a/src/mapi/glapi/glapi_priv.h
+++ b/src/mapi/glapi/glapi_priv.h
@@ -62,17 +62,11 @@ get_entrypoint_address(unsigned int functionOffset);
* Size (in bytes) of dispatch function (entrypoint).
*/
#if defined(USE_X86_ASM)
-# if defined(USE_ELF_TLS)
-# define DISPATCH_FUNCTION_SIZE 16
-# else
-# define DISPATCH_FUNCTION_SIZE 32
-# endif
+#define DISPATCH_FUNCTION_SIZE 16
#endif
#if defined(USE_X64_64_ASM)
-# if defined(USE_ELF_TLS)
-# define DISPATCH_FUNCTION_SIZE 16
-# endif
+#define DISPATCH_FUNCTION_SIZE 16
#endif
diff --git a/src/mapi/glapi/meson.build b/src/mapi/glapi/meson.build
index db4a12664b8..d823482f2b5 100644
--- a/src/mapi/glapi/meson.build
+++ b/src/mapi/glapi/meson.build
@@ -37,9 +37,7 @@ bridge_glapi_files += files(
'../entry.h',
'../entry_x86-64_tls.h',
'../entry_x86_tls.h',
- '../entry_x86_tsd.h',
'../entry_ppc64le_tls.h',
- '../entry_ppc64le_tsd.h',
'../mapi_tmp.h',
)
bridge_glapi_files += glapi_mapi_tmp_h
diff --git a/src/mapi/mapi_glapi.c b/src/mapi/mapi_glapi.c
index afc466504bb..b44c64b018f 100644
--- a/src/mapi/mapi_glapi.c
+++ b/src/mapi/mapi_glapi.c
@@ -38,22 +38,18 @@
* u_current.c.
*/
-#ifdef USE_ELF_TLS
/* not used, but defined for compatibility */
const struct _glapi_table *_glapi_Dispatch;
const void *_glapi_Context;
-#endif /* USE_ELF_TLS */
void
_glapi_destroy_multithread(void)
{
- u_current_destroy();
}
void
_glapi_check_multithread(void)
{
- u_current_init();
}
void
diff --git a/src/mapi/u_current.c b/src/mapi/u_current.c
index a2c43962e94..39db11b54df 100644
--- a/src/mapi/u_current.c
+++ b/src/mapi/u_current.c
@@ -85,11 +85,6 @@ extern void (*__glapi_noop_table[])(void);
* static dispatch functions access these variables via \c _glapi_get_dispatch
* and \c _glapi_get_context.
*
- * There is a race condition in setting \c _glapi_Dispatch to \c NULL. It is
- * possible for the original thread to be setting it at the same instant a new
- * thread, perhaps running on a different processor, is clearing it. Because
- * of that, \c ThreadSafe, which can only ever be changed to \c GL_TRUE, is
- * used to determine whether or not the application is multithreaded.
*
* In the TLS case, the variables \c _glapi_Dispatch and \c _glapi_Context are
* hardcoded to \c NULL. Instead the TLS variables \c _glapi_tls_Dispatch and
@@ -98,91 +93,14 @@ extern void (*__glapi_noop_table[])(void);
* between TLS enabled loaders and non-TLS DRI drivers.
*/
/*@{*/
-#if defined(USE_ELF_TLS)
__THREAD_INITIAL_EXEC struct _glapi_table *u_current_table
= (struct _glapi_table *) table_noop_array;
__THREAD_INITIAL_EXEC void *u_current_context;
-#else
-
-struct _glapi_table *u_current_table =
- (struct _glapi_table *) table_noop_array;
-void *u_current_context;
-
-tss_t u_current_table_tsd;
-static tss_t u_current_context_tsd;
-static int ThreadSafe;
-
-#endif /* defined(USE_ELF_TLS) */
/*@}*/
-
-void
-u_current_destroy(void)
-{
-#if !defined(USE_ELF_TLS)
- tss_delete(u_current_table_tsd);
- tss_delete(u_current_context_tsd);
-#endif
-}
-
-
-#if !defined(USE_ELF_TLS)
-
-static void
-u_current_init_tsd(void)
-{
- tss_create(&u_current_table_tsd, NULL);
- tss_create(&u_current_context_tsd, NULL);
-}
-
-/**
- * Mutex for multithread check.
- */
-static mtx_t ThreadCheckMutex = _MTX_INITIALIZER_NP;
-
-static thread_id knownID;
-
-/**
- * We should call this periodically from a function such as glXMakeCurrent
- * in order to test if multiple threads are being used.
- */
-void
-u_current_init(void)
-{
- static int firstCall = 1;
-
- if (ThreadSafe)
- return;
-
- mtx_lock(&ThreadCheckMutex);
- if (firstCall) {
- u_current_init_tsd();
-
- knownID = util_get_thread_id();
- firstCall = 0;
- }
- else if (!util_thread_id_equal(knownID, util_get_thread_id())) {
- ThreadSafe = 1;
- u_current_set_table(NULL);
- u_current_set_context(NULL);
- }
- mtx_unlock(&ThreadCheckMutex);
-}
-
-#else
-
-void
-u_current_init(void)
-{
-}
-
-#endif
-
-
-
/**
* Set the current context pointer for this thread.
* The context pointer is an opaque type which should be cast to
@@ -191,14 +109,7 @@ u_current_init(void)
void
u_current_set_context(const void *ptr)
{
- u_current_init();
-
-#if defined(USE_ELF_TLS)
u_current_context = (void *) ptr;
-#else
- tss_set(u_current_context_tsd, (void *) ptr);
- u_current_context = (ThreadSafe) ? NULL : (void *) ptr;
-#endif
}
/**
@@ -209,16 +120,7 @@ u_current_set_context(const void *ptr)
void *
u_current_get_context_internal(void)
{
-#if defined(USE_ELF_TLS)
return u_current_context;
-#else
- if (ThreadSafe)
- return tss_get(u_current_context_tsd);
- else if (!util_thread_id_equal(knownID, util_get_thread_id()))
- return NULL;
- else
- return u_current_context;
-#endif
}
/**
@@ -229,19 +131,12 @@ u_current_get_context_internal(void)
void
u_current_set_table(const struct _glapi_table *tbl)
{
- u_current_init();
-
stub_init_once();
if (!tbl)
tbl = (const struct _glapi_table *) table_noop_array;
-#if defined(USE_ELF_TLS)
u_current_table = (struct _glapi_table *) tbl;
-#else
- tss_set(u_current_table_tsd, (void *) tbl);
- u_current_table = (ThreadSafe) ? NULL : (void *) tbl;
-#endif
}
/**
@@ -250,14 +145,5 @@ u_current_set_table(const struct _glapi_table *tbl)
struct _glapi_table *
u_current_get_table_internal(void)
{
-#if defined(USE_ELF_TLS)
return u_current_table;
-#else
- if (ThreadSafe)
- return (struct _glapi_table *) tss_get(u_current_table_tsd);
- else if (!util_thread_id_equal(knownID, util_get_thread_id()))
- return (struct _glapi_table *) table_noop_array;
- else
- return (struct _glapi_table *) u_current_table;
-#endif
}
diff --git a/src/mapi/u_current.h b/src/mapi/u_current.h
index a21a0779ae0..b5a4310044b 100644
--- a/src/mapi/u_current.h
+++ b/src/mapi/u_current.h
@@ -9,13 +9,8 @@
#include "glapi/glapi.h"
-#ifdef USE_ELF_TLS
#define u_current_table _glapi_tls_Dispatch
#define u_current_context _glapi_tls_Context
-#else
-#define u_current_table _glapi_Dispatch
-#define u_current_context _glapi_Context
-#endif
#define u_current_get_table_internal _glapi_get_dispatch
#define u_current_get_context_internal _glapi_get_context
@@ -26,26 +21,11 @@
struct _glapi_table;
-#ifdef USE_ELF_TLS
-
extern __THREAD_INITIAL_EXEC struct _glapi_table *u_current_table;
extern __THREAD_INITIAL_EXEC void *u_current_context;
-#else /* USE_ELF_TLS */
-
-extern struct _glapi_table *u_current_table;
-extern void *u_current_context;
-
-#endif /* USE_ELF_TLS */
-
#endif /* MAPI_MODE_UTIL || MAPI_MODE_GLAPI || MAPI_MODE_BRIDGE */
-void
-u_current_init(void);
-
-void
-u_current_destroy(void);
-
void
u_current_set_table(const struct _glapi_table *tbl);
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