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Commit e3a396b2 authored by Keun-young Park's avatar Keun-young Park Committed by Android Git Automerger
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am 906bd042: Merge "[MIPS] Add MIPS architecture support to libagl" 

* commit '906bd042':
  [MIPS] Add MIPS architecture support to libagl
parents 111d920b 906bd042

opengl/libagl/Android.mk

+7 −0
Original line number Diff line number Diff line
@@ -34,6 +34,13 @@ ifeq ($(TARGET_ARCH),arm) 
	LOCAL_CFLAGS += -fstrict-aliasing

endif



ifeq ($(TARGET_ARCH),mips)

    LOCAL_SRC_FILES += arch-$(TARGET_ARCH)/fixed_asm.S

    LOCAL_CFLAGS += -fstrict-aliasing

    # The graphics code can generate division by zero

    LOCAL_CFLAGS += -mno-check-zero-division

endif



# we need to access the private Bionic header <bionic_tls.h>

LOCAL_C_INCLUDES += bionic/libc/private

opengl/libagl/arch-mips/fixed_asm.S

0 → 100644
+61 −0
Original line number Diff line number Diff line 
/* libs/opengles/arch-mips/fixed_asm.S

**

** Copyright 2012, The Android Open Source Project

**

** Licensed under the Apache License, Version 2.0 (the "License");

** you may not use this file except in compliance with the License.

** You may obtain a copy of the License at

**

**     http://www.apache.org/licenses/LICENSE-2.0

**

** Unless required by applicable law or agreed to in writing, software

** distributed under the License is distributed on an "AS IS" BASIS,

** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

** See the License for the specific language governing permissions and

** limitations under the License.

*/





    .text

    .align



/*

 * this version rounds-to-nearest and saturates numbers

 * outside the range (but not NaNs).

 */



	.global	gglFloatToFixed

	.ent	gglFloatToFixed

	.type	gglFloatToFixed, @function

gglFloatToFixed:

#if !defined(__mips_soft_float)

	mfc1	$a0,$f12

#endif

	srl	$t0,$a0,31		/* t0 <- sign bit */

	srl	$t1,$a0,23

	andi	$t1,$t1,0xff		/* get the e */

	li	$t2,0x8e

	subu	$t1,$t2,$t1		/* t1=127+15-e */

	blez	$t1,0f			/* t1<=0? */

	sll	$t2,$a0,8		/* mantissa<<8 */

	lui	$t3,0x8000

	or	$t2,$t2,$t3		/* add the missing 1 */

	subu	$t1,$t1,1

	srl	$v0,$t2,$t1

	sltiu	$t3,$t1,32		/* t3=1 if t1<32, else t3=0. t1>=32 means the float value is too small. */

	andi	$t4,$v0,0x1

	srl	$v0,$v0,1		/* scale to 16.16 */

	addu	$v0,$v0,$t4		/* round-to-nearest */

	subu	$t2,$zero,$v0

	movn	$v0,$t2,$t0		/* if negative? */

	or	$t1,$a0,$zero		/* a0=0? */

	movz	$v0,$zero,$t1

	movz	$v0,$zero,$t3		/* t3=0 then res=0 */

	jr	$ra

0:

	lui	$t1,0x8000

	and	$v0,$a0,$t1		/* keep only the sign bit */

	li	$t1,0x7fffffff

	movz	$v0,$t1,$t0		/* positive, maximum value */

	jr	$ra

	.end	gglFloatToFixed

opengl/libagl/fp.cpp

+1 −1
Original line number Diff line number Diff line
@@ -19,7 +19,7 @@ 


// ----------------------------------------------------------------------------



#if !defined(__arm__)

#if !defined(__arm__) && !defined(__mips__)

GGLfixed gglFloatToFixed(float v) {   

    return GGLfixed(floorf(v * 65536.0f + 0.5f));

}

opengl/libagl/matrix.h

+44 −0
Original line number Diff line number Diff line
@@ -74,6 +74,30 @@ GLfixed vsquare3(GLfixed a, GLfixed b, GLfixed c) 
        ); 

    return r;



#elif defined(__mips__)



    GLfixed res;

    int32_t t1,t2,t3;

    asm(

        "mult  %[a], %[a]       \r\n"

        "li    %[res],0x8000 \r\n"

        "madd   %[b],%[b] \r\n"

        "move   %[t3],$zero \r\n"

        "madd   %[c],%[c] \r\n"

        "mflo   %[t1]\r\n"

        "mfhi   %[t2]\r\n"

        "addu   %[t1],%[res],%[t1]\r\n"          /*add 0x8000*/

        "sltu   %[t3],%[t1],%[res]\r\n"

        "addu   %[t2],%[t2],%[t3]\r\n"

        "srl    %[res],%[t1],16\r\n"

        "sll    %[t2],%[t2],16\r\n"

        "or     %[res],%[res],%[t2]\r\n"

        :   [res]"=&r"(res),[t1]"=&r"(t1),[t2]"=&r"(t2),[t3]"=&r"(t3)

        :   [a] "r" (a),[b] "r" (b),[c] "r" (c)

        : "%hi","%lo"

        );

    return res;



#else



    return ((   int64_t(a)*a +
@@ -136,6 +160,26 @@ static inline GLfixed mla3a( GLfixed a0, GLfixed b0, 
        ); 

    return r;

    

#elif defined(__mips__)



    GLfixed res;

    int32_t t1,t2;

    asm(

        "mult  %[a0],%[b0]       \r\n"

        "madd  %[a1],%[b1]       \r\n"

        "madd  %[a2],%[b2]       \r\n"

        "mflo  %[t2]\r\n"

        "mfhi  %[t1]\r\n"

        "srl    %[t2],%[t2],16\r\n"

        "sll    %[t1],%[t1],16\r\n"

        "or     %[t2],%[t2],%[t1]\r\n"

        "addu   %[res],%[t2],%[c]"

        :   [res]"=&r"(res),[t1]"=&r"(t1),[t2]"=&r"(t2)

        :   [a0] "r" (a0),[b0] "r" (b0),[a1] "r" (a1),[b1] "r" (b1),[a2] "r" (a2),[b2] "r" (b2),[c] "r" (c)

        : "%hi","%lo"

        );

    return res;



#else



    return ((   int64_t(a0)*b0 +