121 lines
4.3 KiB
ArmAsm
121 lines
4.3 KiB
ArmAsm
/*
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Copyright Jiaxun Yang 2018.
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE
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*/
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/*******************************************************
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* *
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* ------------------------------------------------- *
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* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | *
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* ------------------------------------------------- *
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* | 0 | 8 | 16 | 24 | *
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* ------------------------------------------------- *
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* | F24 | F25 | F26 | F27 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | *
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* ------------------------------------------------- *
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* | 32 | 40 | 48 | 56 | *
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* ------------------------------------------------- *
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* | F28 | F29 | F30 | F31 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | *
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* ------------------------------------------------- *
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* | 64 | 72 | 80 | 88 | *
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* ------------------------------------------------- *
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* | S0 | S1 | S2 | S3 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | *
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* ------------------------------------------------- *
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* | 96 | 100 | 104 | 108 | 112 | 116 | 120 | 124 | *
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* ------------------------------------------------- *
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* | S4 | S5 | S6 | S7 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | *
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* ------------------------------------------------- *
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* | 128 | 132 | 136 | 140 | 144 | 148 | 152 | 156 | *
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* ------------------------------------------------- *
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* | FP | GP | RA | PC | *
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* ------------------------------------------------- *
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* *
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* *****************************************************/
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.file "ontop_mips64_n64_elf_gas.S"
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.text
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.globl ostd_ontop_fcontext
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.align 2
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.type ostd_ontop_fcontext,@function
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.ent ostd_ontop_fcontext
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ostd_ontop_fcontext:
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# reserve space on stack
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daddiu $sp, $sp, -160
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sd $s0, 64($sp) # save S0
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sd $s1, 72($sp) # save S1
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sd $s2, 80($sp) # save S2
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sd $s3, 88($sp) # save S3
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sd $s4, 96($sp) # save S4
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sd $s5, 104($sp) # save S5
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sd $s6, 112($sp) # save S6
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sd $s7, 120($sp) # save S7
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sd $fp, 128($sp) # save FP
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sd $ra, 144($sp) # save RA
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sd $ra, 152($sp) # save RA as PC
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s.d $f24, 0($sp) # save F24
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s.d $f25, 8($sp) # save F25
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s.d $f26, 16($sp) # save F26
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s.d $f27, 24($sp) # save F27
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s.d $f28, 32($sp) # save F28
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s.d $f29, 40($sp) # save F29
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s.d $f30, 48($sp) # save F30
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s.d $f31, 56($sp) # save F31
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# store SP (pointing to context-data) in t0
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move $t0, $sp
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# restore SP (pointing to context-data) from a0
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move $sp, $a0
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l.d $f24, 0($sp) # restore F24
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l.d $f25, 8($sp) # restore F25
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l.d $f26, 16($sp) # restore F26
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l.d $f27, 24($sp) # restore F27
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l.d $f28, 32($sp) # restore F28
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l.d $f29, 40($sp) # restore F29
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l.d $f30, 48($sp) # restore F30
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l.d $f31, 56($sp) # restore F31
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ld $s0, 64($sp) # restore S0
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ld $s1, 72($sp) # restore S1
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ld $s2, 80($sp) # restore S2
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ld $s3, 88($sp) # restore S3
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ld $s4, 96($sp) # restore S4
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ld $s5, 104($sp) # restore S5
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ld $s6, 112($sp) # restore S6
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ld $s7, 120($sp) # restore S7
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ld $fp, 128($sp) # restore FP
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ld $ra, 144($sp) # restore RA
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# load PC
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move $t9, $a2
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# adjust stack
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daddiu $sp, $sp, 160
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move $a0, $t0 # move param from t0 to a0 as param
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# jump to context
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jr $t9
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.end ostd_ontop_fcontext
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.size ostd_ontop_fcontext, .-ostd_ontop_fcontext
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/* Mark that we don't need executable stack. */
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.section .note.GNU-stack,"",%progbits
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