diff options
Diffstat (limited to 'runtime/arch/mips64/quick_entrypoints_mips64.S')
| -rw-r--r-- | runtime/arch/mips64/quick_entrypoints_mips64.S | 64 |
1 files changed, 44 insertions, 20 deletions
diff --git a/runtime/arch/mips64/quick_entrypoints_mips64.S b/runtime/arch/mips64/quick_entrypoints_mips64.S index 8330d0c253..ff79b5d77c 100644 --- a/runtime/arch/mips64/quick_entrypoints_mips64.S +++ b/runtime/arch/mips64/quick_entrypoints_mips64.S @@ -27,6 +27,19 @@ .extern artDeliverPendingExceptionFromCode /* + * Macro that sets up $gp and stores the previous $gp value to $t8. + * This macro modifies v1 and t8. + */ +.macro SETUP_GP + move $v1, $ra + bal 1f + nop +1: + .cpsetup $ra, $t8, 1b + move $ra, $v1 +.endm + + /* * Macro that sets up the callee save frame to conform with * Runtime::CreateCalleeSaveMethod(kSaveAll) * callee-save: padding + $f24-$f31 + $s0-$s7 + $gp + $ra + $s8 = 19 total + 1x8 bytes padding @@ -44,8 +57,8 @@ .cfi_rel_offset 31, 152 sd $s8, 144($sp) .cfi_rel_offset 30, 144 - sd $gp, 136($sp) - .cfi_rel_offset 28, 136 + sd $t8, 136($sp) # t8 holds caller's gp, now save it to the stack. + .cfi_rel_offset 28, 136 # Value from gp is pushed, so set the cfi offset accordingly. sd $s7, 128($sp) .cfi_rel_offset 23, 128 sd $s6, 120($sp) @@ -102,8 +115,8 @@ .cfi_rel_offset 31, 72 sd $s8, 64($sp) .cfi_rel_offset 30, 64 - sd $gp, 56($sp) - .cfi_rel_offset 28, 56 + sd $t8, 56($sp) # t8 holds caller's gp, now save it to the stack. + .cfi_rel_offset 28, 56 # Value from gp is pushed, so set the cfi offset accordingly. sd $s7, 48($sp) .cfi_rel_offset 23, 48 sd $s6, 40($sp) @@ -130,7 +143,7 @@ .cfi_restore 31 ld $s8, 64($sp) .cfi_restore 30 - ld $gp, 56($sp) + ld $t8, 56($sp) # Restore gp back to it's temp storage. .cfi_restore 28 ld $s7, 48($sp) .cfi_restore 23 @@ -146,6 +159,7 @@ .cfi_restore 18 daddiu $sp, $sp, 80 .cfi_adjust_cfa_offset -80 + .cpreturn .endm .macro RESTORE_REFS_ONLY_CALLEE_SAVE_FRAME_AND_RETURN @@ -153,7 +167,7 @@ .cfi_restore 31 ld $s8, 64($sp) .cfi_restore 30 - ld $gp, 56($sp) + ld $t8, 56($sp) # Restore gp back to it's temp storage. .cfi_restore 28 ld $s7, 48($sp) .cfi_restore 23 @@ -167,6 +181,7 @@ .cfi_restore 19 ld $s2, 8($sp) .cfi_restore 18 + .cpreturn jalr $zero, $ra daddiu $sp, $sp, 80 .cfi_adjust_cfa_offset -80 @@ -188,8 +203,8 @@ .cfi_rel_offset 31, 200 sd $s8, 192($sp) .cfi_rel_offset 30, 192 - sd $gp, 184($sp) - .cfi_rel_offset 28, 184 + sd $t8, 184($sp) # t8 holds caller's gp, now save it to the stack. + .cfi_rel_offset 28, 184 # Value from gp is pushed, so set the cfi offset accordingly. sd $s7, 176($sp) .cfi_rel_offset 23, 176 sd $s6, 168($sp) @@ -257,7 +272,7 @@ .cfi_restore 31 ld $s8, 192($sp) .cfi_restore 30 - ld $gp, 184($sp) + ld $t8, 184($sp) # Restore gp back to it's temp storage. .cfi_restore 28 ld $s7, 176($sp) .cfi_restore 23 @@ -296,6 +311,7 @@ l.d $f13, 24($sp) l.d $f12, 16($sp) + .cpreturn daddiu $sp, $sp, 208 .cfi_adjust_cfa_offset -208 .endm @@ -306,6 +322,7 @@ * exception is Thread::Current()->exception_ */ .macro DELIVER_PENDING_EXCEPTION + SETUP_GP SETUP_SAVE_ALL_CALLEE_SAVE_FRAME # save callee saves for throw dla $t9, artDeliverPendingExceptionFromCode jalr $zero, $t9 # artDeliverPendingExceptionFromCode(Thread*) @@ -347,7 +364,7 @@ * On entry $a0 is uint32_t* gprs_ and $a1 is uint32_t* fprs_ * FIXME: just guessing about the shape of the jmpbuf. Where will pc be? */ -ENTRY art_quick_do_long_jump +ENTRY_NO_GP art_quick_do_long_jump l.d $f0, 0($a1) l.d $f1, 8($a1) l.d $f2, 16($a1) @@ -604,7 +621,7 @@ INVOKE_TRAMPOLINE art_quick_invoke_virtual_trampoline_with_access_check, artInvo * a4 = JValue* result * a5 = shorty */ -ENTRY art_quick_invoke_stub +ENTRY_NO_GP art_quick_invoke_stub # push a4, a5, s0(rSUSPEND), s1(rSELF), s8, ra onto the stack daddiu $sp, $sp, -48 .cfi_adjust_cfa_offset 48 @@ -706,7 +723,7 @@ END art_quick_invoke_stub * a4 = JValue* result * a5 = shorty */ -ENTRY art_quick_invoke_static_stub +ENTRY_NO_GP art_quick_invoke_static_stub # push a4, a5, s0(rSUSPEND), s1(rSELF), s8, ra, onto the stack daddiu $sp, $sp, -48 @@ -850,7 +867,8 @@ ENTRY art_quick_check_cast sd $a1, 8($sp) sd $a0, 0($sp) jal artIsAssignableFromCode - nop + .cpreturn # Restore gp from t8 in branch delay slot. + # t8 may be clobbered in artIsAssignableFromCode. beq $v0, $zero, .Lthrow_class_cast_exception ld $ra, 24($sp) jalr $zero, $ra @@ -862,6 +880,7 @@ ENTRY art_quick_check_cast ld $a0, 0($sp) daddiu $sp, $sp, 32 .cfi_adjust_cfa_offset -32 + SETUP_GP SETUP_SAVE_ALL_CALLEE_SAVE_FRAME dla $t9, artThrowClassCastException jalr $zero, $t9 # artThrowClassCastException (Class*, Class*, Thread*) @@ -907,13 +926,13 @@ ENTRY art_quick_aput_obj daddu $t1, $t1, $t0 sb $t0, ($t1) jalr $zero, $ra - nop + .cpreturn # Restore gp from t8 in branch delay slot. .Ldo_aput_null: dsll $a1, $a1, 2 daddu $t0, $a0, $a1 sw $a2, MIRROR_OBJECT_ARRAY_DATA_OFFSET($t0) jalr $zero, $ra - nop + .cpreturn # Restore gp from t8 in branch delay slot. .Lcheck_assignability: daddiu $sp, $sp, -64 .cfi_adjust_cfa_offset 64 @@ -926,7 +945,8 @@ ENTRY art_quick_aput_obj move $a1, $t1 move $a0, $t0 jal artIsAssignableFromCode # (Class*, Class*) - nop + .cpreturn # Restore gp from t8 in branch delay slot. + # t8 may be clobbered in artIsAssignableFromCode. ld $ra, 56($sp) ld $t9, 24($sp) ld $a2, 16($sp) @@ -934,6 +954,7 @@ ENTRY art_quick_aput_obj ld $a0, 0($sp) daddiu $sp, $sp, 64 .cfi_adjust_cfa_offset -64 + SETUP_GP bne $v0, $zero, .Ldo_aput nop SETUP_SAVE_ALL_CALLEE_SAVE_FRAME @@ -1311,7 +1332,7 @@ ENTRY art_quick_test_suspend bne $a0, $zero, 1f daddiu rSUSPEND, $zero, SUSPEND_CHECK_INTERVAL # reset rSUSPEND to SUSPEND_CHECK_INTERVAL jalr $zero, $ra - nop + .cpreturn # Restore gp from t8 in branch delay slot. 1: SETUP_REFS_ONLY_CALLEE_SAVE_FRAME # save callee saves for stack crawl jal artTestSuspendFromCode # (Thread*) @@ -1350,6 +1371,7 @@ ENTRY art_quick_imt_conflict_trampoline dsll $t0, 2 # convert target method offset to bytes daddu $a0, $t0 # get address of target method dla $t9, art_quick_invoke_interface_trampoline + .cpreturn jalr $zero, $t9 lwu $a0, MIRROR_OBJECT_ARRAY_DATA_OFFSET($a0) # load the target method END art_quick_imt_conflict_trampoline @@ -1478,8 +1500,7 @@ END art_quick_instrumentation_entry .global art_quick_instrumentation_exit art_quick_instrumentation_exit: .cfi_startproc - daddiu $t9, $ra, 4 # put current address into $t9 to rebuild $gp - .cpload $t9 + SETUP_GP move $ra, $zero # link register is to here, so clobber with 0 for later checks SETUP_REFS_ONLY_CALLEE_SAVE_FRAME move $t0, $sp # remember bottom of caller's frame @@ -1491,8 +1512,11 @@ art_quick_instrumentation_exit: mov.d $f15, $f0 # pass fpr result move $a2, $v0 # pass gpr result move $a1, $t0 # pass $sp - jal artInstrumentationMethodExitFromCode # (Thread*, SP, gpr_res, fpr_res) move $a0, rSELF # pass Thread::Current + jal artInstrumentationMethodExitFromCode # (Thread*, SP, gpr_res, fpr_res) + .cpreturn # Restore gp from t8 in branch delay slot. gp is not used anymore, + # and t8 may be clobbered in artInstrumentationMethodExitFromCode. + move $t9, $v0 # set aside returned link register move $ra, $v1 # set link register for deoptimization ld $v0, 0($sp) # restore return values |