Merge "[MIPS] Add MIPS architecture support to libagl"
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commit
906bd0422a
@ -34,6 +34,13 @@ ifeq ($(TARGET_ARCH),arm)
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LOCAL_CFLAGS += -fstrict-aliasing
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endif
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ifeq ($(TARGET_ARCH),mips)
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LOCAL_SRC_FILES += arch-$(TARGET_ARCH)/fixed_asm.S
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LOCAL_CFLAGS += -fstrict-aliasing
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# The graphics code can generate division by zero
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LOCAL_CFLAGS += -mno-check-zero-division
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endif
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# we need to access the private Bionic header <bionic_tls.h>
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LOCAL_C_INCLUDES += bionic/libc/private
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61
opengl/libagl/arch-mips/fixed_asm.S
Normal file
61
opengl/libagl/arch-mips/fixed_asm.S
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@ -0,0 +1,61 @@
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/* libs/opengles/arch-mips/fixed_asm.S
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**
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** Copyright 2012, 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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.text
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.align
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/*
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* this version rounds-to-nearest and saturates numbers
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* outside the range (but not NaNs).
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*/
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.global gglFloatToFixed
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.ent gglFloatToFixed
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.type gglFloatToFixed, @function
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gglFloatToFixed:
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#if !defined(__mips_soft_float)
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mfc1 $a0,$f12
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#endif
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srl $t0,$a0,31 /* t0 <- sign bit */
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srl $t1,$a0,23
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andi $t1,$t1,0xff /* get the e */
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li $t2,0x8e
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subu $t1,$t2,$t1 /* t1=127+15-e */
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blez $t1,0f /* t1<=0? */
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sll $t2,$a0,8 /* mantissa<<8 */
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lui $t3,0x8000
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or $t2,$t2,$t3 /* add the missing 1 */
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subu $t1,$t1,1
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srl $v0,$t2,$t1
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sltiu $t3,$t1,32 /* t3=1 if t1<32, else t3=0. t1>=32 means the float value is too small. */
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andi $t4,$v0,0x1
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srl $v0,$v0,1 /* scale to 16.16 */
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addu $v0,$v0,$t4 /* round-to-nearest */
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subu $t2,$zero,$v0
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movn $v0,$t2,$t0 /* if negative? */
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or $t1,$a0,$zero /* a0=0? */
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movz $v0,$zero,$t1
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movz $v0,$zero,$t3 /* t3=0 then res=0 */
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jr $ra
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0:
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lui $t1,0x8000
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and $v0,$a0,$t1 /* keep only the sign bit */
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li $t1,0x7fffffff
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movz $v0,$t1,$t0 /* positive, maximum value */
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jr $ra
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.end gglFloatToFixed
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@ -19,7 +19,7 @@
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// ----------------------------------------------------------------------------
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#if !defined(__arm__)
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#if !defined(__arm__) && !defined(__mips__)
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GGLfixed gglFloatToFixed(float v) {
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return GGLfixed(floorf(v * 65536.0f + 0.5f));
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}
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@ -74,6 +74,30 @@ GLfixed vsquare3(GLfixed a, GLfixed b, GLfixed c)
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);
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return r;
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#elif defined(__mips__)
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GLfixed res;
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int32_t t1,t2,t3;
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asm(
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"mult %[a], %[a] \r\n"
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"li %[res],0x8000 \r\n"
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"madd %[b],%[b] \r\n"
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"move %[t3],$zero \r\n"
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"madd %[c],%[c] \r\n"
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"mflo %[t1]\r\n"
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"mfhi %[t2]\r\n"
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"addu %[t1],%[res],%[t1]\r\n" /*add 0x8000*/
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"sltu %[t3],%[t1],%[res]\r\n"
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"addu %[t2],%[t2],%[t3]\r\n"
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"srl %[res],%[t1],16\r\n"
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"sll %[t2],%[t2],16\r\n"
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"or %[res],%[res],%[t2]\r\n"
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: [res]"=&r"(res),[t1]"=&r"(t1),[t2]"=&r"(t2),[t3]"=&r"(t3)
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: [a] "r" (a),[b] "r" (b),[c] "r" (c)
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: "%hi","%lo"
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);
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return res;
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#else
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return (( int64_t(a)*a +
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@ -136,6 +160,26 @@ static inline GLfixed mla3a( GLfixed a0, GLfixed b0,
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);
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return r;
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#elif defined(__mips__)
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GLfixed res;
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int32_t t1,t2;
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asm(
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"mult %[a0],%[b0] \r\n"
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"madd %[a1],%[b1] \r\n"
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"madd %[a2],%[b2] \r\n"
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"mflo %[t2]\r\n"
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"mfhi %[t1]\r\n"
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"srl %[t2],%[t2],16\r\n"
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"sll %[t1],%[t1],16\r\n"
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"or %[t2],%[t2],%[t1]\r\n"
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"addu %[res],%[t2],%[c]"
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: [res]"=&r"(res),[t1]"=&r"(t1),[t2]"=&r"(t2)
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: [a0] "r" (a0),[b0] "r" (b0),[a1] "r" (a1),[b1] "r" (b1),[a2] "r" (a2),[b2] "r" (b2),[c] "r" (c)
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: "%hi","%lo"
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);
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return res;
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#else
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return (( int64_t(a0)*b0 +
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