Revert "[MIPS] Use hard float calling convention for managed code"

MipsMir2Lir::LockCallTemps() is broken for secondary architecture on aosp_mips64-eng.

This reverts commit a29449dcf57c57fe0876f51367985477317cc557.

Change-Id: I480ea7569d73aea7894fc0a6dd804b1135286a37
diff --git a/runtime/arch/mips/asm_support_mips.h b/runtime/arch/mips/asm_support_mips.h
index 453056d..390c606 100644
--- a/runtime/arch/mips/asm_support_mips.h
+++ b/runtime/arch/mips/asm_support_mips.h
@@ -21,6 +21,6 @@
 
 #define FRAME_SIZE_SAVE_ALL_CALLEE_SAVE 96
 #define FRAME_SIZE_REFS_ONLY_CALLEE_SAVE 48
-#define FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE 80
+#define FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE 64
 
 #endif  // ART_RUNTIME_ARCH_MIPS_ASM_SUPPORT_MIPS_H_
diff --git a/runtime/arch/mips/context_mips.cc b/runtime/arch/mips/context_mips.cc
index bc2bf68..53f2b65 100644
--- a/runtime/arch/mips/context_mips.cc
+++ b/runtime/arch/mips/context_mips.cc
@@ -76,11 +76,6 @@
   gprs_[A1] = nullptr;
   gprs_[A2] = nullptr;
   gprs_[A3] = nullptr;
-
-  fprs_[F12] = nullptr;
-  fprs_[F13] = nullptr;
-  fprs_[F14] = nullptr;
-  fprs_[F15] = nullptr;
 }
 
 extern "C" NO_RETURN void art_quick_do_long_jump(uint32_t*, uint32_t*);
diff --git a/runtime/arch/mips/jni_entrypoints_mips.S b/runtime/arch/mips/jni_entrypoints_mips.S
index 3558efd..fbc81d5 100644
--- a/runtime/arch/mips/jni_entrypoints_mips.S
+++ b/runtime/arch/mips/jni_entrypoints_mips.S
@@ -24,19 +24,17 @@
      */
     .extern artFindNativeMethod
 ENTRY art_jni_dlsym_lookup_stub
-    addiu $sp, $sp, -48         # leave room for $f12, $f13, $f14, $f15, $a0, $a1, $a2, $a3, and $ra
-    .cfi_adjust_cfa_offset 48
-    sw    $ra, 32($sp)
-    .cfi_rel_offset 31, 32
-    SDu   $f14, $f15, 24, $sp, $t0
-    SDu   $f12, $f13, 16, $sp, $t0
-    sw    $a3, 12($sp)
+    addiu $sp, $sp, -32          # leave room for $a0, $a1, $a2, $a3, and $ra
+    .cfi_adjust_cfa_offset 32
+    sw     $ra, 16($sp)
+    .cfi_rel_offset 31, 16
+    sw     $a3, 12($sp)
     .cfi_rel_offset 7, 12
-    sw    $a2, 8($sp)
+    sw     $a2, 8($sp)
     .cfi_rel_offset 6, 8
-    sw    $a1, 4($sp)
+    sw     $a1, 4($sp)
     .cfi_rel_offset 5, 4
-    sw    $a0, 0($sp)
+    sw     $a0, 0($sp)
     .cfi_rel_offset 4, 0
     jal   artFindNativeMethod   # (Thread*)
     move  $a0, $s1              # pass Thread::Current()
@@ -44,12 +42,10 @@
     lw    $a1, 4($sp)
     lw    $a2, 8($sp)
     lw    $a3, 12($sp)
-    LDu   $f12, $f13, 16, $sp, $t0
-    LDu   $f14, $f15, 24, $sp, $t0
-    lw    $ra, 32($sp)
+    lw    $ra, 16($sp)
     beq   $v0, $zero, .Lno_native_code_found
-    addiu $sp, $sp, 48          # restore the stack
-    .cfi_adjust_cfa_offset -48
+    addiu $sp, $sp, 32          # restore the stack
+    .cfi_adjust_cfa_offset -32
     move  $t9, $v0              # put method code result in $t9
     jalr  $zero, $t9            # leaf call to method's code
     nop
diff --git a/runtime/arch/mips/quick_entrypoints_mips.S b/runtime/arch/mips/quick_entrypoints_mips.S
index 8bc75e5..4d5004f 100644
--- a/runtime/arch/mips/quick_entrypoints_mips.S
+++ b/runtime/arch/mips/quick_entrypoints_mips.S
@@ -170,47 +170,45 @@
      * callee-save: $a1-$a3, $s2-$s8 + $gp + $ra, 12 total + 3 words padding + method*
      */
 .macro SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME_REGISTERS_ONLY
-    addiu  $sp, $sp, -80
-    .cfi_adjust_cfa_offset 80
+    addiu  $sp, $sp, -64
+    .cfi_adjust_cfa_offset 64
 
     // Ugly compile-time check, but we only have the preprocessor.
-#if (FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE != 80)
+#if (FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE != 64)
 #error "REFS_AND_ARGS_CALLEE_SAVE_FRAME(MIPS) size not as expected."
 #endif
 
-    sw     $ra, 76($sp)
-    .cfi_rel_offset 31, 76
-    sw     $s8, 72($sp)
-    .cfi_rel_offset 30, 72
-    sw     $gp, 68($sp)
-    .cfi_rel_offset 28, 68
-    sw     $s7, 64($sp)
-    .cfi_rel_offset 23, 64
-    sw     $s6, 60($sp)
-    .cfi_rel_offset 22, 60
-    sw     $s5, 56($sp)
-    .cfi_rel_offset 21, 56
-    sw     $s4, 52($sp)
-    .cfi_rel_offset 20, 52
-    sw     $s3, 48($sp)
-    .cfi_rel_offset 19, 48
-    sw     $s2, 44($sp)
-    .cfi_rel_offset 18, 44
-    sw     $a3, 40($sp)
-    .cfi_rel_offset 7, 40
-    sw     $a2, 36($sp)
-    .cfi_rel_offset 6, 36
-    sw     $a1, 32($sp)
-    .cfi_rel_offset 5, 32
-    SDu $f14, $f15, 24, $sp, $t0
-    SDu $f12, $f13, 16, $sp, $t0
+    sw     $ra, 60($sp)
+    .cfi_rel_offset 31, 60
+    sw     $s8, 56($sp)
+    .cfi_rel_offset 30, 56
+    sw     $gp, 52($sp)
+    .cfi_rel_offset 28, 52
+    sw     $s7, 48($sp)
+    .cfi_rel_offset 23, 48
+    sw     $s6, 44($sp)
+    .cfi_rel_offset 22, 44
+    sw     $s5, 40($sp)
+    .cfi_rel_offset 21, 40
+    sw     $s4, 36($sp)
+    .cfi_rel_offset 20, 36
+    sw     $s3, 32($sp)
+    .cfi_rel_offset 19, 32
+    sw     $s2, 28($sp)
+    .cfi_rel_offset 18, 28
+    sw     $a3, 24($sp)
+    .cfi_rel_offset 7, 24
+    sw     $a2, 20($sp)
+    .cfi_rel_offset 6, 20
+    sw     $a1, 16($sp)
+    .cfi_rel_offset 5, 16
     # bottom will hold Method*
 .endm
 
     /*
      * Macro that sets up the callee save frame to conform with
      * Runtime::CreateCalleeSaveMethod(kRefsAndArgs). Restoration assumes non-moving GC.
-     * callee-save: $a1-$a3, $f12-$f15, $s2-$s8 + $gp + $ra, 12 total + 3 words padding + method*
+     * callee-save: $a1-$a3, $s2-$s8 + $gp + $ra, 12 total + 3 words padding + method*
      * Clobbers $t0 and $sp
      * Allocates ARG_SLOT_SIZE bytes at the bottom of the stack for arg slots.
      * Reserves FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE + ARG_SLOT_SIZE bytes on the stack
@@ -229,7 +227,7 @@
     /*
      * Macro that sets up the callee save frame to conform with
      * Runtime::CreateCalleeSaveMethod(kRefsAndArgs). Restoration assumes non-moving GC.
-     * callee-save: $a1-$a3, $f12-$f15, $s2-$s8 + $gp + $ra, 12 total + 3 words padding + method*
+     * callee-save: $a1-$a3, $s2-$s8 + $gp + $ra, 12 total + 3 words padding + method*
      * Clobbers $sp
      * Use $a0 as the Method* and loads it into bottom of stack.
      * Allocates ARG_SLOT_SIZE bytes at the bottom of the stack for arg slots.
@@ -246,34 +244,32 @@
 .macro RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME
     addiu  $sp, $sp, ARG_SLOT_SIZE                # remove argument slots on the stack
     .cfi_adjust_cfa_offset -ARG_SLOT_SIZE
-    lw     $ra, 76($sp)
+    lw     $ra, 60($sp)
     .cfi_restore 31
-    lw     $s8, 72($sp)
+    lw     $s8, 56($sp)
     .cfi_restore 30
-    lw     $gp, 68($sp)
+    lw     $gp, 52($sp)
     .cfi_restore 28
-    lw     $s7, 64($sp)
+    lw     $s7, 48($sp)
     .cfi_restore 23
-    lw     $s6, 60($sp)
+    lw     $s6, 44($sp)
     .cfi_restore 22
-    lw     $s5, 56($sp)
+    lw     $s5, 40($sp)
     .cfi_restore 21
-    lw     $s4, 52($sp)
+    lw     $s4, 36($sp)
     .cfi_restore 20
-    lw     $s3, 48($sp)
+    lw     $s3, 32($sp)
     .cfi_restore 19
-    lw     $s2, 44($sp)
+    lw     $s2, 28($sp)
     .cfi_restore 18
-    lw     $a3, 40($sp)
+    lw     $a3, 24($sp)
     .cfi_restore 7
-    lw     $a2, 36($sp)
+    lw     $a2, 20($sp)
     .cfi_restore 6
-    lw     $a1, 32($sp)
+    lw     $a1, 16($sp)
     .cfi_restore 5
-    LDu $f14, $f15, 24, $sp, $t1
-    LDu $f12, $f13, 16, $sp, $t1
-    addiu  $sp, $sp, 80           # pop frame
-    .cfi_adjust_cfa_offset -80
+    addiu  $sp, $sp, 64           # pop frame
+    .cfi_adjust_cfa_offset -64
 .endm
 
     /*
@@ -488,32 +484,6 @@
 INVOKE_TRAMPOLINE art_quick_invoke_super_trampoline_with_access_check, artInvokeSuperTrampolineWithAccessCheck
 INVOKE_TRAMPOLINE art_quick_invoke_virtual_trampoline_with_access_check, artInvokeVirtualTrampolineWithAccessCheck
 
-.macro LOAD_WORD_TO_REG reg, next_arg, index, label
-    lw    $\reg, -4($\next_arg)   # next_arg points to argument after the current one (offset is 4)
-    b     \label
-    addiu $\index, 1
-.endm
-
-.macro LOAD_LONG_TO_REG reg1, reg2, next_arg, index, label
-    lw    $\reg1, -8($\next_arg)  # next_arg points to argument after the current one (offset is 8)
-    lw    $\reg2, -4($\next_arg)
-    b     \label
-    li    $\index, 4              # long can be loaded only to a2_a3 pair so index will be always 4
-.endm
-
-.macro LOAD_FLOAT_TO_REG reg, next_arg, index, label
-    lwc1  $\reg, -4($\next_arg)   # next_arg points to argument after the current one (offset is 4)
-    b     \label
-    addiu $\index, 1
-.endm
-
-.macro LOAD_DOUBLE_TO_REG reg1, reg2, next_arg, index, tmp, label
-    LDu  $\reg1, $\reg2, -8, $\next_arg, $\tmp  # next_arg points to argument after the current one
-                                                # (offset is 8)
-    b     \label
-    addiu $\index, 1
-.endm
-
     /*
      * Invocation stub for quick code.
      * On entry:
@@ -540,76 +510,21 @@
     .cfi_def_cfa_register 30
     move  $s1, $a3              # move managed thread pointer into s1
     addiu $s0, $zero, SUSPEND_CHECK_INTERVAL  # reset s0 to suspend check interval
-    addiu $t0, $a2, 4           # create space for ArtMethod* in frame.
+    addiu $t0, $a2, 4           # create space for method pointer in frame.
     subu  $t0, $sp, $t0         # reserve & align *stack* to 16 bytes:
-    srl   $t0, $t0, 4           #   native calling convention only aligns to 8B,
-    sll   $sp, $t0, 4           #   so we have to ensure ART 16B alignment ourselves.
-    addiu $a0, $sp, 4           # pass stack pointer + ArtMethod* as dest for memcpy
+    srl   $t0, $t0, 4           # native calling convention only aligns to 8B,
+    sll   $sp, $t0, 4           # so we have to ensure ART 16B alignment ourselves.
+    addiu $a0, $sp, 4           # pass stack pointer + method ptr as dest for memcpy
     jal   memcpy                # (dest, src, bytes)
     addiu $sp, $sp, -16         # make space for argument slots for memcpy
     addiu $sp, $sp, 16          # restore stack after memcpy
-    lw    $a0, 16($fp)          # restore ArtMethod*
-    lw    $a1, 4($sp)           # a1 = this*
-    addiu $t0, $sp, 8           # t0 = pointer to the current argument (skip ArtMethod* and this*)
-    li    $t3, 2                # t3 = gpr_index = 2 (skip A0 and A1)
-    move  $t4, $zero            # t4 = fp_index = 0
-    lw    $t1, 20+16($fp)       # get shorty (20 is offset from the $sp on entry + 16 as the $fp is
-                                # 16 bytes below the $sp on entry)
-    addiu $t1, 1                # t1 = shorty + 1 (skip 1 for return type)
-loop:
-    lbu   $t2, 0($t1)           # t2 = shorty[i]
-    beqz  $t2, loopEnd          # finish getting args when shorty[i] == '\0'
-    addiu $t1, 1
-
-    li    $t9, 'J'              # put char 'J' into t9
-    beq   $t9, $t2, isLong      # branch if result type char == 'J'
-    li    $t9, 'D'              # put char 'D' into t9
-    beq   $t9, $t2, isDouble    # branch if result type char == 'D'
-    li    $t9, 'F'              # put char 'F' into t9
-    beq   $t9, $t2, isSingle    # branch if result type char == 'F'
-    addiu $t0, 4                # next_arg = curr_arg + 4 (in branch delay slot,
-                                # for both, int and single)
-
-    li    $t5, 2                                   # skip a0 and a1 (ArtMethod* and this*)
-    bne   $t5, $t3, 1f                             # if (gpr_index == 2)
-    addiu $t5, 1
-    LOAD_WORD_TO_REG a2, t0, t3, loop              #   a2 = current argument, gpr_index++
-1:  bne   $t5, $t3, loop                           # else if (gpr_index == 3)
-    nop
-    LOAD_WORD_TO_REG a3, t0, t3, loop              #   a3 = current argument, gpr_index++
-
-isLong:
-    addiu $t0, 8                                   # next_arg = curr_arg + 8
-    slti  $t5, $t3, 3
-    beqz  $t5, 2f                                  # if (gpr_index < 3)
-    nop
-    LOAD_LONG_TO_REG a2, a3, t0, t3, loop          #   a2_a3 = curr_arg, gpr_index = 4
-2:  b     loop                                     # else
-    li    $t3, 4                                   #   gpr_index = 4
-
-isDouble:
-    addiu $t0, 8                                   # next_arg = curr_arg + 8
-    li    $t5, 0
-    bne   $t5, $t4, 3f                             # if (fp_index == 0)
-    addiu $t5, 1
-    LOAD_DOUBLE_TO_REG f12, f13, t0, t4, t9, loop  #   f12_f13 = curr_arg, fp_index++
-3:  bne   $t5, $t4, loop                           # else if (fp_index == 1)
-    nop
-    LOAD_DOUBLE_TO_REG f14, f15, t0, t4, t9, loop  #   f14_f15 = curr_arg, fp_index++
-
-isSingle:
-    li    $t5, 0
-    bne   $t5, $t4, 4f                             # if (fp_index == 0)
-    addiu $t5, 1
-    LOAD_FLOAT_TO_REG f12, t0, t4, loop            #   f12 = curr_arg, fp_index++
-4:  bne   $t5, $t4, loop                           # else if (fp_index == 1)
-    nop
-    LOAD_FLOAT_TO_REG f14, t0, t4, loop            #   f14 = curr_arg, fp_index++
-
-loopEnd:
+    lw    $a0, 16($fp)          # restore method*
+    lw    $a1, 4($sp)           # copy arg value for a1
+    lw    $a2, 8($sp)           # copy arg value for a2
+    lw    $a3, 12($sp)          # copy arg value for a3
     lw    $t9, ART_METHOD_QUICK_CODE_OFFSET_32($a0)  # get pointer to the code
     jalr  $t9                   # call the method
-    sw    $zero, 0($sp)         # store null for ArtMethod* at bottom of frame
+    sw    $zero, 0($sp)         # store null for method* at bottom of frame
     move  $sp, $fp              # restore the stack
     lw    $s0, 0($sp)
     .cfi_restore 16
@@ -624,145 +539,20 @@
     lw    $t0, 16($sp)          # get result pointer
     lw    $t1, 20($sp)          # get shorty
     lb    $t1, 0($t1)           # get result type char
-    li    $t2, 'D'              # put char 'D' into t2
-    beq   $t1, $t2, 5f          # branch if result type char == 'D'
-    li    $t3, 'F'              # put char 'F' into t3
-    beq   $t1, $t3, 5f          # branch if result type char == 'F'
+    li    $t2, 68               # put char 'D' into t2
+    beq   $t1, $t2, 1f          # branch if result type char == 'D'
+    li    $t3, 70               # put char 'F' into t3
+    beq   $t1, $t3, 1f          # branch if result type char == 'F'
     sw    $v0, 0($t0)           # store the result
     jalr  $zero, $ra
     sw    $v1, 4($t0)           # store the other half of the result
-5:
+1:
     SDu   $f0, $f1, 0, $t0, $t1 # store floating point result
     jalr  $zero, $ra
     nop
 END art_quick_invoke_stub
 
     /*
-     * Invocation static stub for quick code.
-     * On entry:
-     *   a0 = method pointer
-     *   a1 = argument array or null for no argument methods
-     *   a2 = size of argument array in bytes
-     *   a3 = (managed) thread pointer
-     *   [sp + 16] = JValue* result
-     *   [sp + 20] = shorty
-     */
-ENTRY art_quick_invoke_static_stub
-    sw    $a0, 0($sp)           # save out a0
-    addiu $sp, $sp, -16         # spill s0, s1, fp, ra
-    .cfi_adjust_cfa_offset 16
-    sw    $ra, 12($sp)
-    .cfi_rel_offset 31, 12
-    sw    $fp, 8($sp)
-    .cfi_rel_offset 30, 8
-    sw    $s1, 4($sp)
-    .cfi_rel_offset 17, 4
-    sw    $s0, 0($sp)
-    .cfi_rel_offset 16, 0
-    move  $fp, $sp              # save sp in fp
-    .cfi_def_cfa_register 30
-    move  $s1, $a3              # move managed thread pointer into s1
-    addiu $s0, $zero, SUSPEND_CHECK_INTERVAL  # reset s0 to suspend check interval
-    addiu $t0, $a2, 4           # create space for ArtMethod* in frame.
-    subu  $t0, $sp, $t0         # reserve & align *stack* to 16 bytes:
-    srl   $t0, $t0, 4           #   native calling convention only aligns to 8B,
-    sll   $sp, $t0, 4           #   so we have to ensure ART 16B alignment ourselves.
-    addiu $a0, $sp, 4           # pass stack pointer + ArtMethod* as dest for memcpy
-    jal   memcpy                # (dest, src, bytes)
-    addiu $sp, $sp, -16         # make space for argument slots for memcpy
-    addiu $sp, $sp, 16          # restore stack after memcpy
-    lw    $a0, 16($fp)          # restore ArtMethod*
-    addiu $t0, $sp, 4           # t0 = pointer to the current argument (skip ArtMethod*)
-    li    $t3, 1                # t3 = gpr_index = 1 (skip A0)
-    move  $t4, $zero            # t4 = fp_index = 0
-    lw    $t1, 20+16($fp)       # get shorty (20 is offset from the $sp on entry + 16 as the $fp is
-                                # 16 bytes below the $sp on entry)
-    addiu $t1, 1                # t1 = shorty + 1 (skip 1 for return type)
-loopS:
-    lbu   $t2, 0($t1)           # t2 = shorty[i]
-    beqz  $t2, loopEndS         # finish getting args when shorty[i] == '\0'
-    addiu $t1, 1
-
-    li    $t9, 'J'              # put char 'J' into t9
-    beq   $t9, $t2, isLongS     # branch if result type char == 'J'
-    li    $t9, 'D'              # put char 'D' into t9
-    beq   $t9, $t2, isDoubleS   # branch if result type char == 'D'
-    li    $t9, 'F'              # put char 'F' into t9
-    beq   $t9, $t2, isSingleS   # branch if result type char == 'F'
-    addiu $t0, 4                # next_arg = curr_arg + 4 (in branch delay slot,
-                                # for both, int and single)
-
-    li    $t5, 1                                    # skip a0 (ArtMethod*)
-    bne   $t5, $t3, 1f                              # if (gpr_index == 1)
-    addiu $t5, 1
-    LOAD_WORD_TO_REG a1, t0, t3, loopS              #   a1 = current argument, gpr_index++
-1:  bne   $t5, $t3, 2f                              # else if (gpr_index == 2)
-    addiu $t5, 1
-    LOAD_WORD_TO_REG a2, t0, t3, loopS              #   a2 = current argument, gpr_index++
-2:  bne   $t5, $t3, loopS                           # else if (gpr_index == 3)
-    nop
-    LOAD_WORD_TO_REG a3, t0, t3, loopS              #   a3 = current argument, gpr_index++
-
-isLongS:
-    addiu $t0, 8                                    # next_arg = curr_arg + 8
-    slti  $t5, $t3, 3
-    beqz  $t5, 3f                                   # if (gpr_index < 3)
-    nop
-    LOAD_LONG_TO_REG a2, a3, t0, t3, loopS          #   a2_a3 = curr_arg, gpr_index = 4
-3:  b     loopS                                     # else
-    li    $t3, 4                                    #   gpr_index = 4
-
-isDoubleS:
-    addiu $t0, 8                                    # next_arg = curr_arg + 8
-    li    $t5, 0
-    bne   $t5, $t4, 4f                              # if (fp_index == 0)
-    addiu $t5, 1
-    LOAD_DOUBLE_TO_REG f12, f13, t0, t4, t9, loopS  #   f12_f13 = curr_arg, fp_index++
-4:  bne   $t5, $t4, loopS                           # else if (fp_index == 1)
-    nop
-    LOAD_DOUBLE_TO_REG f14, f15, t0, t4, t9, loopS  #   f14_f15 = curr_arg, fp_index++
-
-isSingleS:
-    li    $t5, 0
-    bne   $t5, $t4, 5f                              # if (fp_index == 0)
-    addiu $t5, 1
-    LOAD_FLOAT_TO_REG f12, t0, t4, loopS            #   f12 = curr_arg, fp_index++
-5:  bne   $t5, $t4, loopS                           # else if (fp_index == 1)
-    nop
-    LOAD_FLOAT_TO_REG f14, t0, t4, loopS            #   f14 = curr_arg, fp_index++
-
-loopEndS:
-    lw    $t9, ART_METHOD_QUICK_CODE_OFFSET_32($a0)  # get pointer to the code
-    jalr  $t9                   # call the method
-    sw    $zero, 0($sp)         # store null for ArtMethod* at bottom of frame
-    move  $sp, $fp              # restore the stack
-    lw    $s0, 0($sp)
-    .cfi_restore 16
-    lw    $s1, 4($sp)
-    .cfi_restore 17
-    lw    $fp, 8($sp)
-    .cfi_restore 30
-    lw    $ra, 12($sp)
-    .cfi_restore 31
-    addiu $sp, $sp, 16
-    .cfi_adjust_cfa_offset -16
-    lw    $t0, 16($sp)          # get result pointer
-    lw    $t1, 20($sp)          # get shorty
-    lb    $t1, 0($t1)           # get result type char
-    li    $t2, 'D'              # put char 'D' into t2
-    beq   $t1, $t2, 6f          # branch if result type char == 'D'
-    li    $t3, 'F'              # put char 'F' into t3
-    beq   $t1, $t3, 6f          # branch if result type char == 'F'
-    sw    $v0, 0($t0)           # store the result
-    jalr  $zero, $ra
-    sw    $v1, 4($t0)           # store the other half of the result
-6:
-    SDu   $f0, $f1, 0, $t0, $t1 # store floating point result
-    jalr  $zero, $ra
-    nop
-END art_quick_invoke_static_stub
-
-    /*
      * Entry from managed code that calls artHandleFillArrayDataFromCode and delivers exception on
      * failure.
      */
diff --git a/runtime/arch/mips/quick_method_frame_info_mips.h b/runtime/arch/mips/quick_method_frame_info_mips.h
index f5d13c2..dd5ac80 100644
--- a/runtime/arch/mips/quick_method_frame_info_mips.h
+++ b/runtime/arch/mips/quick_method_frame_info_mips.h
@@ -25,8 +25,6 @@
 namespace art {
 namespace mips {
 
-static constexpr uint32_t kMipsCalleeSaveAlwaysSpills =
-    (1 << art::mips::RA);
 static constexpr uint32_t kMipsCalleeSaveRefSpills =
     (1 << art::mips::S2) | (1 << art::mips::S3) | (1 << art::mips::S4) | (1 << art::mips::S5) |
     (1 << art::mips::S6) | (1 << art::mips::S7) | (1 << art::mips::GP) | (1 << art::mips::FP);
@@ -34,26 +32,19 @@
     (1 << art::mips::A1) | (1 << art::mips::A2) | (1 << art::mips::A3);
 static constexpr uint32_t kMipsCalleeSaveAllSpills =
     (1 << art::mips::S0) | (1 << art::mips::S1);
-
-static constexpr uint32_t kMipsCalleeSaveFpAlwaysSpills = 0;
-static constexpr uint32_t kMipsCalleeSaveFpRefSpills = 0;
-static constexpr uint32_t kMipsCalleeSaveFpArgSpills =
-    (1 << art::mips::F12) | (1 << art::mips::F13) | (1 << art::mips::F14) | (1 << art::mips::F15);
 static constexpr uint32_t kMipsCalleeSaveAllFPSpills =
     (1 << art::mips::F20) | (1 << art::mips::F21) | (1 << art::mips::F22) | (1 << art::mips::F23) |
     (1 << art::mips::F24) | (1 << art::mips::F25) | (1 << art::mips::F26) | (1 << art::mips::F27) |
     (1 << art::mips::F28) | (1 << art::mips::F29) | (1 << art::mips::F30) | (1 << art::mips::F31);
 
 constexpr uint32_t MipsCalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
-  return kMipsCalleeSaveAlwaysSpills | kMipsCalleeSaveRefSpills |
+  return kMipsCalleeSaveRefSpills |
       (type == Runtime::kRefsAndArgs ? kMipsCalleeSaveArgSpills : 0) |
-      (type == Runtime::kSaveAll ? kMipsCalleeSaveAllSpills : 0);
+      (type == Runtime::kSaveAll ? kMipsCalleeSaveAllSpills : 0) | (1 << art::mips::RA);
 }
 
 constexpr uint32_t MipsCalleeSaveFPSpills(Runtime::CalleeSaveType type) {
-  return kMipsCalleeSaveFpAlwaysSpills | kMipsCalleeSaveFpRefSpills |
-      (type == Runtime::kRefsAndArgs ? kMipsCalleeSaveFpArgSpills : 0) |
-      (type == Runtime::kSaveAll ? kMipsCalleeSaveAllFPSpills : 0);
+  return type == Runtime::kSaveAll ? kMipsCalleeSaveAllFPSpills : 0;
 }
 
 constexpr uint32_t MipsCalleeSaveFrameSize(Runtime::CalleeSaveType type) {
diff --git a/runtime/art_method.cc b/runtime/art_method.cc
index 56f7b35..f4c6473 100644
--- a/runtime/art_method.cc
+++ b/runtime/art_method.cc
@@ -45,8 +45,10 @@
 
 extern "C" void art_quick_invoke_stub(ArtMethod*, uint32_t*, uint32_t, Thread*, JValue*,
                                       const char*);
+#if defined(__LP64__) || defined(__arm__) || defined(__i386__)
 extern "C" void art_quick_invoke_static_stub(ArtMethod*, uint32_t*, uint32_t, Thread*, JValue*,
                                              const char*);
+#endif
 
 ArtMethod* ArtMethod::FromReflectedMethod(const ScopedObjectAccessAlreadyRunnable& soa,
                                           jobject jlr_method) {
@@ -415,11 +417,15 @@
             << "Don't call compiled code when -Xint " << PrettyMethod(this);
       }
 
+#if defined(__LP64__) || defined(__arm__) || defined(__i386__)
       if (!IsStatic()) {
         (*art_quick_invoke_stub)(this, args, args_size, self, result, shorty);
       } else {
         (*art_quick_invoke_static_stub)(this, args, args_size, self, result, shorty);
       }
+#else
+      (*art_quick_invoke_stub)(this, args, args_size, self, result, shorty);
+#endif
       if (UNLIKELY(self->GetException() == Thread::GetDeoptimizationException())) {
         // Unusual case where we were running generated code and an
         // exception was thrown to force the activations to be removed from the
diff --git a/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc b/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc
index aa35ec1..da4b82c 100644
--- a/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc
@@ -65,7 +65,6 @@
   static constexpr bool kAlignPairRegister = !kArm32QuickCodeUseSoftFloat;
   static constexpr bool kQuickSoftFloatAbi = kArm32QuickCodeUseSoftFloat;
   static constexpr bool kQuickDoubleRegAlignedFloatBackFilled = !kArm32QuickCodeUseSoftFloat;
-  static constexpr bool kQuickSkipOddFpRegisters = false;
   static constexpr size_t kNumQuickGprArgs = 3;
   static constexpr size_t kNumQuickFprArgs = kArm32QuickCodeUseSoftFloat ? 0 : 16;
   static constexpr bool kGprFprLockstep = false;
@@ -103,7 +102,6 @@
   static constexpr bool kAlignPairRegister = false;
   static constexpr bool kQuickSoftFloatAbi = false;  // This is a hard float ABI.
   static constexpr bool kQuickDoubleRegAlignedFloatBackFilled = false;
-  static constexpr bool kQuickSkipOddFpRegisters = false;
   static constexpr size_t kNumQuickGprArgs = 7;  // 7 arguments passed in GPRs.
   static constexpr size_t kNumQuickFprArgs = 8;  // 8 arguments passed in FPRs.
   static constexpr bool kGprFprLockstep = false;
@@ -130,25 +128,17 @@
   // | A3         |    arg3
   // | A2         |    arg2
   // | A1         |    arg1
-  // | F15        |
-  // | F14        |    f_arg1
-  // | F13        |
-  // | F12        |    f_arg0
-  // |            |    padding
   // | A0/Method* |  <- sp
-  static constexpr bool kSplitPairAcrossRegisterAndStack = false;
-  static constexpr bool kAlignPairRegister = true;
-  static constexpr bool kQuickSoftFloatAbi = false;
+  static constexpr bool kSplitPairAcrossRegisterAndStack = true;
+  static constexpr bool kAlignPairRegister = false;
+  static constexpr bool kQuickSoftFloatAbi = true;  // This is a soft float ABI.
   static constexpr bool kQuickDoubleRegAlignedFloatBackFilled = false;
-  static constexpr bool kQuickSkipOddFpRegisters = true;
   static constexpr size_t kNumQuickGprArgs = 3;  // 3 arguments passed in GPRs.
-  static constexpr size_t kNumQuickFprArgs = 4;  // 2 arguments passed in FPRs. Floats can be passed
-                                                 // only in even numbered registers and each double
-                                                 // occupies two registers.
+  static constexpr size_t kNumQuickFprArgs = 0;  // 0 arguments passed in FPRs.
   static constexpr bool kGprFprLockstep = false;
-  static constexpr size_t kQuickCalleeSaveFrame_RefAndArgs_Fpr1Offset = 16;  // Offset of first FPR arg.
-  static constexpr size_t kQuickCalleeSaveFrame_RefAndArgs_Gpr1Offset = 32;  // Offset of first GPR arg.
-  static constexpr size_t kQuickCalleeSaveFrame_RefAndArgs_LrOffset = 76;  // Offset of return address.
+  static constexpr size_t kQuickCalleeSaveFrame_RefAndArgs_Fpr1Offset = 0;  // Offset of first FPR arg.
+  static constexpr size_t kQuickCalleeSaveFrame_RefAndArgs_Gpr1Offset = 16;  // Offset of first GPR arg.
+  static constexpr size_t kQuickCalleeSaveFrame_RefAndArgs_LrOffset = 60;  // Offset of return address.
   static size_t GprIndexToGprOffset(uint32_t gpr_index) {
     return gpr_index * GetBytesPerGprSpillLocation(kRuntimeISA);
   }
@@ -163,6 +153,14 @@
   // | Method*    | ---
   // | RA         |
   // | ...        |    callee saves
+  // | F7         |    f_arg7
+  // | F6         |    f_arg6
+  // | F5         |    f_arg5
+  // | F4         |    f_arg4
+  // | F3         |    f_arg3
+  // | F2         |    f_arg2
+  // | F1         |    f_arg1
+  // | F0         |    f_arg0
   // | A7         |    arg7
   // | A6         |    arg6
   // | A5         |    arg5
@@ -170,14 +168,6 @@
   // | A3         |    arg3
   // | A2         |    arg2
   // | A1         |    arg1
-  // | F19        |    f_arg7
-  // | F18        |    f_arg6
-  // | F17        |    f_arg5
-  // | F16        |    f_arg4
-  // | F15        |    f_arg3
-  // | F14        |    f_arg2
-  // | F13        |    f_arg1
-  // | F12        |    f_arg0
   // |            |    padding
   // | A0/Method* |  <- sp
   // NOTE: for Mip64, when A0 is skipped, F0 is also skipped.
@@ -185,7 +175,9 @@
   static constexpr bool kAlignPairRegister = false;
   static constexpr bool kQuickSoftFloatAbi = false;
   static constexpr bool kQuickDoubleRegAlignedFloatBackFilled = false;
-  static constexpr bool kQuickSkipOddFpRegisters = false;
+  // These values are set to zeros because GPR and FPR register
+  // assignments for Mips64 are interleaved, which the current VisitArguments()
+  // function does not support.
   static constexpr size_t kNumQuickGprArgs = 7;  // 7 arguments passed in GPRs.
   static constexpr size_t kNumQuickFprArgs = 7;  // 7 arguments passed in FPRs.
   static constexpr bool kGprFprLockstep = true;
@@ -219,7 +211,6 @@
   static constexpr bool kAlignPairRegister = false;
   static constexpr bool kQuickSoftFloatAbi = false;  // This is a hard float ABI.
   static constexpr bool kQuickDoubleRegAlignedFloatBackFilled = false;
-  static constexpr bool kQuickSkipOddFpRegisters = false;
   static constexpr size_t kNumQuickGprArgs = 3;  // 3 arguments passed in GPRs.
   static constexpr size_t kNumQuickFprArgs = 4;  // 4 arguments passed in FPRs.
   static constexpr bool kGprFprLockstep = false;
@@ -261,7 +252,6 @@
   static constexpr bool kAlignPairRegister = false;
   static constexpr bool kQuickSoftFloatAbi = false;  // This is a hard float ABI.
   static constexpr bool kQuickDoubleRegAlignedFloatBackFilled = false;
-  static constexpr bool kQuickSkipOddFpRegisters = false;
   static constexpr size_t kNumQuickGprArgs = 5;  // 5 arguments passed in GPRs.
   static constexpr size_t kNumQuickFprArgs = 8;  // 8 arguments passed in FPRs.
   static constexpr bool kGprFprLockstep = false;
@@ -485,8 +475,6 @@
                 if (fpr_index_ % 2 == 0) {
                   fpr_index_ = std::max(fpr_double_index_, fpr_index_);
                 }
-              } else if (kQuickSkipOddFpRegisters) {
-                IncFprIndex();
               }
             }
           }
@@ -495,9 +483,8 @@
         case Primitive::kPrimLong:
           if (kQuickSoftFloatAbi || (cur_type_ == Primitive::kPrimLong)) {
             if (cur_type_ == Primitive::kPrimLong && kAlignPairRegister && gpr_index_ == 0) {
-              // Currently, this is only for ARM and MIPS, where the first available parameter
-              // register is R1 (on ARM) or A1 (on MIPS). So we skip it, and use R2 (on ARM) or
-              // A2 (on MIPS) instead.
+              // Currently, this is only for ARM, where the first available parameter register
+              // is R1. So we skip it, and use R2 instead.
               IncGprIndex();
             }
             is_split_long_or_double_ = (GetBytesPerGprSpillLocation(kRuntimeISA) == 4) &&