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jmp.S
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jmp.S
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/* Copyright 2009-2024
* Kaz Kylheku <kaz@kylheku.com>
* Vancouver, Canada
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#if __MINGW32__ || (__CYGWIN__ && __i386__)
#define DEFUN(NAME) \
.global _ ## NAME ; \
_ ## NAME: ;
#elif __APPLE__ && __arm64__
#define DEFUN(NAME) \
.globl _ ## NAME %% \
.p2align 2 %% \
_ ## NAME: ;
#elif __APPLE__
#define DEFUN(NAME) \
.globl _ ## NAME ; \
_ ## NAME: ;
#elif (__arm__ && !__thumb__) || __aarch64__
#define DEFUN(NAME) \
.text ; \
.align 4 ; \
.global NAME ; \
.type NAME, %function ; \
NAME: ;
#elif __arm__ && __thumb__
#define DEFUN(NAME) \
.text ; \
.align 4 ; \
.global NAME ; \
.thumb ; \
.thumb_func ; \
.type NAME, %function ; \
NAME: ;
#elif __CYGWIN__ && __x86_64__
#define DEFUN(NAME) \
.globl NAME ; \
.def NAME; .scl 2; .type 32; .endef; \
NAME: ;
#elif __riscv
#define DEFUN(NAME) \
.global NAME ; \
.type NAME, %function ; \
NAME: ;
#else
#define DEFUN(NAME) \
.global NAME ; \
.type NAME, @function ; \
NAME: ;
#endif
#if __arm__
#define SIGIL() %
#else
#define SIGIL() @
#endif
#if __i386__
#define JEIP 0
#define JESP 4
#define JEBP 8
#define JEBX 12
#define JESI 16
#define JEDI 20
#define RETA 0
#define ARG1 4
#define ARG2 8
DEFUN(jmp_save)
movl RETA(%esp), %ecx
movl ARG1(%esp), %eax
movl %ecx, JEIP(%eax)
leal ARG1(%esp), %ecx
movl %ecx, JESP(%eax)
movl %ebp, JEBP(%eax)
movl %ebx, JEBX(%eax)
movl %esi, JESI(%eax)
movl %edi, JEDI(%eax)
xorl %eax, %eax
ret
DEFUN(jmp_restore)
movl ARG1(%esp), %edx
movl ARG2(%esp), %eax
mov JEDI(%edx),%edi
mov JESI(%edx),%esi
mov JEBX(%edx),%ebx
mov JEBP(%edx),%ebp
mov JESP(%edx),%ecx
mov %ecx,%esp
mov JEIP(%edx),%ecx
jmp *%ecx
#elif __x86_64__ && !__CYGWIN__
#define JRIP 0
#define JRSP 8
#define JRBP 16
#define JRBX 24
#define JR12 32
#define JR13 40
#define JR14 48
#define JR15 56
#define RETA 0
#define ARG2 8
DEFUN(jmp_save)
mov RETA(%rsp), %rdx
mov %rdx, JRIP(%rdi)
lea ARG2(%rsp), %rdx
mov %rdx, JRSP(%rdi)
mov %rbp, JRBP(%rdi)
mov %rbx, JRBX(%rdi)
mov %r12, JR12(%rdi)
mov %r13, JR13(%rdi)
mov %r14, JR14(%rdi)
mov %r15, JR15(%rdi)
xor %rax, %rax
ret
DEFUN(jmp_restore)
mov JR15(%rdi), %r15
mov JR14(%rdi), %r14
mov JR13(%rdi), %r13
mov JR12(%rdi), %r12
mov JRBX(%rdi), %rbx
mov JRBP(%rdi), %rbp
mov JRSP(%rdi), %rdx
mov %rdx, %rsp
mov JRIP(%rdi), %rdx
mov %rsi, %rax
jmp *%rdx
#elif __x86_64__ && __CYGWIN__
#define JRIP 0
#define JRSP 8
#define JRBP 16
#define JRBX 24
#define JR12 32
#define JR13 40
#define JR14 48
#define JR15 56
#define JRSI 64
#define JRDI 72
#define RETA 0
#define ARG2 8
DEFUN(jmp_save)
mov RETA(%rsp), %rax
mov %rax, JRIP(%rcx)
lea ARG2(%rsp), %rax
mov %rax, JRSP(%rcx)
mov %rbp, JRBP(%rcx)
mov %rbx, JRBX(%rcx)
mov %r12, JR12(%rcx)
mov %r13, JR13(%rcx)
mov %r14, JR14(%rcx)
mov %r15, JR15(%rcx)
mov %rsi, JRSI(%rcx)
mov %rdi, JRDI(%rcx)
xor %rax, %rax
ret
DEFUN(jmp_restore)
mov JRDI(%rcx), %rdi
mov JRSI(%rcx), %rsi
mov JR15(%rcx), %r15
mov JR14(%rcx), %r14
mov JR13(%rcx), %r13
mov JR12(%rcx), %r12
mov JRBX(%rcx), %rbx
mov JRBP(%rcx), %rbp
mov JRSP(%rcx), %rax
mov %rax, %rsp
mov JRIP(%rcx), %rcx
mov %rdx, %rax
jmp *%rcx
#elif __arm__ && !__thumb__
DEFUN(jmp_save)
stmia r0, {r4, r5, r6, r7, r8, r9, r10, fp, sp, lr}
mov r0, #0
bx lr
DEFUN(jmp_restore)
ldmia r0, {r4, r5, r6, r7, r8, r9, r10, fp, sp, lr}
mov r0, r1
bx lr
#elif __arm__ && __thumb__
DEFUN(jmp_save)
mov r2, r0
mov r3, lr
stmia r0!, {r3, r4, r5, r6, r7}
mov r3, r8
mov r4, r9
mov r5, r10
mov r6, fp
mov r7, sp
stmia r0!, {r3, r4, r5, r6, r7}
ldmia r2!, {r3, r4, r5, r6, r7}
mov r0, #0
bx lr
DEFUN(jmp_restore)
mov r2, r0
add r0, #5*4
ldmia r0!, {r3, r4, r5, r6, r7}
mov r8, r3
mov r9, r4
mov r10, r5
mov fp, r6
mov sp, r7
ldmia r2!, {r3, r4, r5, r6, r7}
mov r0, r1
bx r3
#elif __PPC64__
DEFUN(jmp_save)
mflr %r11
mfcr %r12
#if __ALTIVEC__
stvx %v31, 0, %r3
addi %r3, %r3, 32
#endif
std %r1, 0(%r3)
std %r2, 8(%r3)
std %r11, 16(%r3)
std %r12, 24(%r3)
std %r13, 32(%r3)
std %r14, 40(%r3)
std %r15, 48(%r3)
std %r16, 56(%r3)
std %r17, 64(%r3)
std %r18, 72(%r3)
std %r19, 80(%r3)
std %r20, 88(%r3)
std %r21, 96(%r3)
std %r22, 104(%r3)
std %r23, 112(%r3)
std %r24, 120(%r3)
std %r25, 128(%r3)
std %r26, 136(%r3)
std %r27, 144(%r3)
std %r28, 152(%r3)
std %r29, 160(%r3)
std %r30, 168(%r3)
std %r31, 176(%r3)
#if __ALTIVEC__
std %r11, 184(%r3) /* clobber padding */
#endif
li %r3, 0
blr
DEFUN(jmp_restore)
#if __ALTIVEC__
lvx %v31, 0, %r3
addi %r3, %r3, 32
#endif
ld %r31, 176(%r3)
ld %r30, 168(%r3)
ld %r29, 160(%r3)
ld %r28, 152(%r3)
ld %r27, 144(%r3)
ld %r26, 136(%r3)
ld %r25, 128(%r3)
ld %r24, 120(%r3)
ld %r23, 112(%r3)
ld %r22, 104(%r3)
ld %r21, 96(%r3)
ld %r20, 88(%r3)
ld %r17, 64(%r3)
ld %r19, 80(%r3)
ld %r18, 72(%r3)
ld %r16, 56(%r3)
ld %r15, 48(%r3)
ld %r14, 40(%r3)
ld %r13, 32(%r3)
ld %r12, 24(%r3)
ld %r11, 16(%r3)
ld %r2, 8(%r3)
ld %r1, 0(%r3)
mtcr %r12
mtlr %r11
mr %r3, %r4
blr
#elif __aarch64__ || __arm64__
#if __APPLE__
.section __TEXT,__text,regular,pure_instructions
#endif
DEFUN(jmp_save)
stp x19, x20, [x0, 0]
stp x21, x22, [x0, 16]
stp x23, x24, [x0, 32]
stp x25, x26, [x0, 48]
stp x27, x28, [x0, 64]
stp x29, x30, [x0, 80]
stp d8, d9, [x0, 96]
stp d10, d11, [x0, 112]
stp d12, d13, [x0, 128]
stp d14, d15, [x0, 144]
mov x16, sp
str x16, [x0, 160]
mov w0, #0
ret
DEFUN(jmp_restore)
ldp x19, x20, [x0, 0]
ldp x21, x22, [x0, 16]
ldp x23, x24, [x0, 32]
ldp x25, x26, [x0, 48]
ldp x27, x28, [x0, 64]
ldp x29, x30, [x0, 80]
ldp d8, d9, [x0, 96]
ldp d10, d11, [x0, 112]
ldp d12, d13, [x0, 128]
ldp d14, d15, [x0, 144]
ldr x16, [x0, 160]
mov sp, x16
mov w0, w1
br x30
#if __APPLE__
.subsections_via_symbols
#endif
#elif _MIPS_SZPTR == 32
.set noreorder
DEFUN(jmp_save)
sw $16, 0($4)
sw $17, 4($4)
sw $18, 8($4)
sw $19, 12($4)
sw $20, 16($4)
sw $21, 20($4)
sw $22, 24($4)
sw $23, 28($4)
sw $28, 32($4)
sw $29, 36($4)
sw $30, 40($4)
sw $ra, 44($4)
jr $ra
li $2, 0
DEFUN(jmp_restore)
lw $16, 0($4)
lw $17, 4($4)
lw $18, 8($4)
lw $19, 12($4)
lw $20, 16($4)
lw $21, 20($4)
lw $22, 24($4)
lw $23, 28($4)
lw $28, 32($4)
lw $29, 36($4)
lw $ra, 44($4)
lw $30, 40($4)
jr $ra
move $2, $5
#elif _MIPS_SZPTR == 64
.set noreorder
DEFUN(jmp_save)
sd $16, 0($4)
sd $17, 8($4)
sd $18, 16($4)
sd $19, 24($4)
sd $20, 32($4)
sd $21, 40($4)
sd $22, 48($4)
sd $23, 56($4)
sd $28, 64($4)
sd $29, 72($4)
sd $30, 80($4)
sd $ra, 88($4)
jr $ra
li $2, 0
DEFUN(jmp_restore)
ld $16, 0($4)
ld $17, 8($4)
ld $18, 16($4)
ld $19, 24($4)
ld $20, 32($4)
ld $21, 40($4)
ld $22, 48($4)
ld $23, 56($4)
ld $28, 64($4)
ld $29, 72($4)
ld $ra, 80($4)
ld $30, 88($4)
jr $ra
move $2, $5
#elif __riscv
DEFUN(jmp_save)
sd ra, 0(a0)
sd sp, 8(a0)
sd fp, 16(a0)
sd s1, 24(a0)
sd s2, 32(a0)
sd s3, 40(a0)
sd s4, 48(a0)
sd s5, 56(a0)
sd s6, 64(a0)
sd s7, 72(a0)
sd s8, 80(a0)
sd s9, 88(a0)
sd s10, 96(a0)
sd s11, 104(a0)
#if 0 && !__riscv_float_abi_soft
fsd fs0, 112(a0)
fsd fs1, 120(a0)
fsd fs2, 128(a0)
fsd fs3, 136(a0)
fsd fs4, 144(a0)
fsd fs5, 152(a0)
fsd fs6, 160(a0)
fsd fs7, 168(a0)
fsd fs8, 176(a0)
fsd fs9, 184(a0)
fsd fs10, 192(a0)
fsd fs11, 200(a0)
#endif
li a0, 0
ret
DEFUN(jmp_restore)
ld ra, 0(a0)
ld sp, 8(a0)
ld fp, 16(a0)
ld s1, 24(a0)
ld s2, 32(a0)
ld s3, 40(a0)
ld s4, 48(a0)
ld s5, 56(a0)
ld s6, 64(a0)
ld s7, 72(a0)
ld s8, 80(a0)
ld s9, 88(a0)
ld s10, 96(a0)
ld s11, 104(a0)
#if 0 && !__riscv_float_abi_soft
fld fs0, 112(a0)
fld fs1, 120(a0)
fld fs2, 128(a0)
fld fs3, 136(a0)
fld fs4, 144(a0)
fld fs5, 152(a0)
fld fs6, 160(a0)
fld fs7, 168(a0)
fld fs8, 176(a0)
fld fs9, 184(a0)
fld fs10, 192(a0)
fld fs11, 200(a0)
#endif
mv a0, a1
ret
#elif __loongarch64
DEFUN(jmp_save)
st.d $ra, $a0, 0
st.d $sp, $a0, 8
st.d $fp, $a0, 16
st.d $s0, $a0, 24
st.d $s1, $a0, 32
st.d $s2, $a0, 40
st.d $s3, $a0, 48
st.d $s4, $a0, 56
st.d $s5, $a0, 64
st.d $s6, $a0, 72
st.d $s7, $a0, 80
st.d $s8, $a0, 88
#if 0 && !__loongarch64_soft_float
fst.d $fs0, $a0, 96
fst.d $fs1, $a0, 104
fst.d $fs2, $a0, 112
fst.d $fs3, $a0, 120
fst.d $fs4, $a0, 128
fst.d $fs5, $a0, 136
fst.d $fs6, $a0, 144
fst.d $fs7, $a0, 152
#endif
xor $v0, $v0, $v0
jirl $zero, $ra, 0
DEFUN(jmp_restore)
ld.d $ra, $a0, 0
ld.d $sp, $a0, 8
ld.d $fp, $a0, 16
ld.d $s0, $a0, 24
ld.d $s1, $a0, 32
ld.d $s2, $a0, 40
ld.d $s3, $a0, 48
ld.d $s4, $a0, 56
ld.d $s5, $a0, 64
ld.d $s6, $a0, 72
ld.d $s7, $a0, 80
ld.d $s8, $a0, 88
#if 0 && !__loongarch64_soft_float
fld.d $fs0, $a0, 96
fld.d $fs1, $a0, 104
fld.d $fs2, $a0, 112
fld.d $fs3, $a0, 120
fld.d $fs4, $a0, 128
fld.d $fs5, $a0, 136
fld.d $fs6, $a0, 144
fld.d $fs7, $a0, 152
#endif
add.d $v0, $a1, $zero
jirl $zero, $ra, 0
#else
#error port me!
#endif
#if !defined(__APPLE__) && !defined(__MINGW32__) && !defined(__CYGWIN__)
/* This is needed so our assembly code doesn't cause
the program to require an executable stack! */
.section .note.GNU-stack,"",SIGIL()progbits
#endif