6701fbe5f0
Combines 4 patches by Dragoslav and Douglas: Use t9 to hold the address of the called function. Add support for gl binding. Fix inline assembly code to be R6 compatible. Fix some more inline assembly code to be R6 compatible. Change-Id: I0b899813790b2ba4ca538bb21692014cc1933f66
261 lines
13 KiB
C++
261 lines
13 KiB
C++
/*
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** Copyright 2009, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#include <ctype.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <cutils/log.h>
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#include "egldefs.h"
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// ----------------------------------------------------------------------------
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namespace android {
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// ----------------------------------------------------------------------------
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#undef API_ENTRY
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#undef CALL_GL_EXTENSION_API
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#undef GL_EXTENSION
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#undef GL_EXTENSION_NAME
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#undef GL_EXTENSION_ARRAY
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#undef GL_EXTENSION_LIST
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#undef GET_TLS
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#if defined(__arm__)
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#define GET_TLS(reg) "mrc p15, 0, " #reg ", c13, c0, 3 \n"
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#define API_ENTRY(_api) __attribute__((naked)) _api
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#define CALL_GL_EXTENSION_API(_api) \
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asm volatile( \
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GET_TLS(r12) \
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"ldr r12, [r12, %[tls]] \n" \
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"cmp r12, #0 \n" \
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"ldrne r12, [r12, %[api]] \n" \
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"cmpne r12, #0 \n" \
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"bxne r12 \n" \
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"bx lr \n" \
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: \
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: [tls] "J"(TLS_SLOT_OPENGL_API*4), \
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[api] "J"(__builtin_offsetof(gl_hooks_t, \
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ext.extensions[_api])) \
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: "r12" \
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);
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#elif defined(__aarch64__)
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#define API_ENTRY(_api) __attribute__((noinline)) _api
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#define CALL_GL_EXTENSION_API(_api) \
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asm volatile( \
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"mrs x16, tpidr_el0\n" \
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"ldr x16, [x16, %[tls]]\n" \
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"cbz x16, 1f\n" \
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"ldr x16, [x16, %[api]]\n" \
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"cbz x16, 1f\n" \
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"br x16\n" \
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"1:\n" \
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: \
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: [tls] "i" (TLS_SLOT_OPENGL_API * sizeof(void*)), \
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[api] "i" (__builtin_offsetof(gl_hooks_t, \
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ext.extensions[_api])) \
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: "x16" \
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);
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#elif defined(__i386__)
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#define API_ENTRY(_api) __attribute__((noinline,optimize("omit-frame-pointer"))) _api
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#define CALL_GL_EXTENSION_API(_api) \
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register void** fn; \
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__asm__ volatile( \
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"mov %%gs:0, %[fn]\n" \
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"mov %P[tls](%[fn]), %[fn]\n" \
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"test %[fn], %[fn]\n" \
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"cmovne %P[api](%[fn]), %[fn]\n" \
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"test %[fn], %[fn]\n" \
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"je 1f\n" \
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"jmp *%[fn]\n" \
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"1:\n" \
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: [fn] "=r" (fn) \
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: [tls] "i" (TLS_SLOT_OPENGL_API*sizeof(void*)), \
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[api] "i" (__builtin_offsetof(gl_hooks_t, \
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ext.extensions[_api])) \
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: "cc" \
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);
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#elif defined(__x86_64__)
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#define API_ENTRY(_api) __attribute__((noinline,optimize("omit-frame-pointer"))) _api
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#define CALL_GL_EXTENSION_API(_api) \
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register void** fn; \
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__asm__ volatile( \
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"mov %%fs:0, %[fn]\n" \
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"mov %P[tls](%[fn]), %[fn]\n" \
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"test %[fn], %[fn]\n" \
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"cmovne %P[api](%[fn]), %[fn]\n" \
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"test %[fn], %[fn]\n" \
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"je 1f\n" \
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"jmp *%[fn]\n" \
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"1:\n" \
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: [fn] "=r" (fn) \
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: [tls] "i" (TLS_SLOT_OPENGL_API*sizeof(void*)), \
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[api] "i" (__builtin_offsetof(gl_hooks_t, \
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ext.extensions[_api])) \
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: "cc" \
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);
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#elif defined(__mips64)
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#define API_ENTRY(_api) __attribute__((noinline)) _api
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#define CALL_GL_EXTENSION_API(_api, ...) \
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register unsigned int _t0 asm("t0"); \
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register unsigned int _fn asm("t1"); \
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register unsigned int _tls asm("v1"); \
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asm volatile( \
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".set push\n\t" \
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".set noreorder\n\t" \
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"rdhwr %[tls], $29\n\t" \
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"ld %[t0], %[OPENGL_API](%[tls])\n\t" \
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"beqz %[t0], 1f\n\t" \
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" move %[fn], $ra\n\t" \
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"ld %[t0], %[API](%[t0])\n\t" \
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"beqz %[t0], 1f\n\t" \
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" nop\n\t" \
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"move %[fn], %[t0]\n\t" \
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"1:\n\t" \
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"jalr $0, %[fn]\n\t" \
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" nop\n\t" \
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".set pop\n\t" \
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: [fn] "=c"(_fn), \
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[tls] "=&r"(_tls), \
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[t0] "=&r"(_t0) \
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: [OPENGL_API] "I"(TLS_SLOT_OPENGL_API*4), \
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[API] "I"(__builtin_offsetof(gl_hooks_t, \
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ext.extensions[_api])) \
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: \
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);
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#elif defined(__mips__)
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#define API_ENTRY(_api) __attribute__((noinline)) _api
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#define CALL_GL_EXTENSION_API(_api, ...) \
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register unsigned int _t0 asm("t0"); \
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register unsigned int _fn asm("t1"); \
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register unsigned int _tls asm("v1"); \
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asm volatile( \
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".set push\n\t" \
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".set noreorder\n\t" \
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"rdhwr %[tls], $29\n\t" \
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"lw %[t0], %[OPENGL_API](%[tls])\n\t" \
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"beqz %[t0], 1f\n\t" \
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" move %[fn], $ra\n\t" \
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"lw %[t0], %[API](%[t0])\n\t" \
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"beqz %[t0], 1f\n\t" \
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" nop\n\t" \
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"move %[fn], %[t0]\n\t" \
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"1:\n\t" \
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"jalr $0, %[fn]\n\t" \
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" nop\n\t" \
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".set pop\n\t" \
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: [fn] "=c"(_fn), \
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[tls] "=&r"(_tls), \
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[t0] "=&r"(_t0) \
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: [OPENGL_API] "I"(TLS_SLOT_OPENGL_API*4), \
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[API] "I"(__builtin_offsetof(gl_hooks_t, \
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ext.extensions[_api])) \
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: \
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);
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#endif
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#if defined(CALL_GL_EXTENSION_API)
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#define GL_EXTENSION_NAME(_n) __glExtFwd##_n
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#define GL_EXTENSION(_n) \
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void API_ENTRY(GL_EXTENSION_NAME(_n))() { \
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CALL_GL_EXTENSION_API(_n); \
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}
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#else
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#define GL_EXTENSION_NAME(_n) NULL
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#define GL_EXTENSION(_n)
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#warning "eglGetProcAddress() partially supported"
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#endif
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#define GL_EXTENSION_LIST(name) \
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name(0) name(1) name(2) name(3) name(4) name(5) name(6) name(7) \
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name(8) name(9) name(10) name(11) name(12) name(13) name(14) name(15) \
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name(16) name(17) name(18) name(19) name(20) name(21) name(22) name(23) \
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name(24) name(25) name(26) name(27) name(28) name(29) name(30) name(31) \
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name(32) name(33) name(34) name(35) name(36) name(37) name(38) name(39) \
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name(40) name(41) name(42) name(43) name(44) name(45) name(46) name(47) \
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name(48) name(49) name(50) name(51) name(52) name(53) name(54) name(55) \
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name(56) name(57) name(58) name(59) name(60) name(61) name(62) name(63) \
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name(64) name(65) name(66) name(67) name(68) name(69) name(70) name(71) \
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name(72) name(73) name(74) name(75) name(76) name(77) name(78) name(79) \
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name(80) name(81) name(82) name(83) name(84) name(85) name(86) name(87) \
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name(88) name(89) name(90) name(91) name(92) name(93) name(94) name(95) \
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name(96) name(97) name(98) name(99) \
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name(100) name(101) name(102) name(103) name(104) name(105) name(106) name(107) \
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name(108) name(109) name(110) name(111) name(112) name(113) name(114) name(115) \
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name(116) name(117) name(118) name(119) name(120) name(121) name(122) name(123) \
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name(124) name(125) name(126) name(127) name(128) name(129) name(130) name(131) \
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name(132) name(133) name(134) name(135) name(136) name(137) name(138) name(139) \
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name(140) name(141) name(142) name(143) name(144) name(145) name(146) name(147) \
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name(148) name(149) name(150) name(151) name(152) name(153) name(154) name(155) \
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name(156) name(157) name(158) name(159) name(160) name(161) name(162) name(163) \
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name(164) name(165) name(166) name(167) name(168) name(169) name(170) name(171) \
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name(172) name(173) name(174) name(175) name(176) name(177) name(178) name(179) \
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name(180) name(181) name(182) name(183) name(184) name(185) name(186) name(187) \
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name(188) name(189) name(190) name(191) name(192) name(193) name(194) name(195) \
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name(196) name(197) name(198) name(199) \
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name(200) name(201) name(202) name(203) name(204) name(205) name(206) name(207) \
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name(208) name(209) name(210) name(211) name(212) name(213) name(214) name(215) \
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name(216) name(217) name(218) name(219) name(220) name(221) name(222) name(223) \
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name(224) name(225) name(226) name(227) name(228) name(229) name(230) name(231) \
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name(232) name(233) name(234) name(235) name(236) name(237) name(238) name(239) \
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name(240) name(241) name(242) name(243) name(244) name(245) name(246) name(247) \
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name(248) name(249) name(250) name(251) name(252) name(253) name(254) name(255)
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GL_EXTENSION_LIST( GL_EXTENSION )
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#define GL_EXTENSION_ARRAY(_n) GL_EXTENSION_NAME(_n),
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extern const __eglMustCastToProperFunctionPointerType gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS] = {
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GL_EXTENSION_LIST( GL_EXTENSION_ARRAY )
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};
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#undef GET_TLS
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#undef GL_EXTENSION_LIST
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#undef GL_EXTENSION_ARRAY
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#undef GL_EXTENSION_NAME
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#undef GL_EXTENSION
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#undef API_ENTRY
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#undef CALL_GL_EXTENSION_API
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// ----------------------------------------------------------------------------
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}; // namespace android
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// ----------------------------------------------------------------------------
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