/* * Copyright (c) 2015 Cisco and/or its affiliates. * 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. */ /* Copyright (c) 2005 Eliot Dresselhaus Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #if defined(__APPLE__) # define cdecl(s) _##s #else # define cdecl(s) s #endif #if defined(__x86_64__) .global cdecl(clib_setjmp) .align 4 #ifndef __APPLE__ .type cdecl(clib_setjmp), @function #endif cdecl(clib_setjmp): movq %rbx, 8*0(%rdi) movq %rbp, 8*1(%rdi) movq %r12, 8*2(%rdi) movq %r13, 8*3(%rdi) movq %r14, 8*4(%rdi) movq %r15, 8*5(%rdi) /* Save SP after return. */ leaq 8(%rsp), %rdx movq %rdx, 8*6(%rdi) /* Save PC we are returning to from stack frame. */ movq 0(%rsp), %rax movq %rax, 8*7(%rdi) /* Give back user's return value. */ movq %rsi, %rax ret .global cdecl(clib_longjmp) .align 4 #ifndef __APPLE__ .type cdecl(clib_longjmp), @function #endif cdecl(clib_longjmp): /* Restore regs. */ movq 8*0(%rdi), %rbx movq 8*1(%rdi), %rbp movq 8*2(%rdi), %r12 movq 8*3(%rdi), %r13 movq 8*4(%rdi), %r14 movq 8*5(%rdi), %r15 movq 8*6(%rdi), %rsp movq 8*7(%rdi), %rdx /* Give back user's return value. */ movq %rsi, %rax /* Away we go. */ jmpq *%rdx .global cdecl(clib_calljmp) .align 4 #ifndef __APPLE__ .type cdecl(clib_calljmp), @function #endif cdecl(clib_calljmp): /* Make sure stack is 16-byte aligned. */ movq %rdx, %rax andq $0xf, %rax subq %rax, %rdx /* Get return address. */ pop %rax /* Switch to new stack. */ xchgq %rsp, %rdx /* Save return address on new stack. */ push %rax /* Save old stack pointer on new stack. */ push %rdx /* Get function. */ movq %rdi, %rdx /* Move argument into place. */ movq %rsi, %rdi /* Away we go. */ callq *%rdx /* Switch back to old stack. */ movq 8(%rsp), %rdx movq 0(%rsp), %rcx xchgq %rcx, %rsp /* Return to caller. */ jmpq *%rdx #elif defined(i386) .global cdecl(clib_setjmp) .align 4 .type cdecl(clib_setjmp), @function cdecl(clib_setjmp): movl 4(%esp), %ecx movl %ebp, 4*0(%ecx) movl %ebx, 4*1(%ecx) movl %edi, 4*2(%ecx) movl %esi, 4*3(%ecx) /* Save SP after return. */ leal 4(%esp), %edx movl %edx, 4*4(%ecx) /* Save PC we are returning to from stack frame. */ movl 0(%esp), %eax movl %eax, 4*5(%ecx) /* Give back user's return value. */ movl 8(%esp), %eax ret .global cdecl(clib_longjmp) .align 4 .type cdecl(clib_longjmp), @function cdecl(clib_longjmp): movl 4(%esp), %ecx /* Give back user's return value. */ movl 8(%esp), %eax /* Restore regs. */ movl 4*0(%ecx), %ebp movl 4*1(%ecx), %ebx movl 4*2(%ecx), %edi movl 4*3(%ecx), %esi movl 4*4(%ecx), %esp movl 4*5(%ecx), %edx /* Away we go. */ jmp *%edx .global cdecl(clib_calljmp) .align 4 .type cdecl(clib_calljmp), @function cdecl(clib_calljmp): /* Get new stack pointer. */ movl 12(%esp), %edx /* Switch stacks. */ xchgl %esp, %edx /* Save old stack pointer on new stack. */ sub $8, %esp movl %edx, 4(%esp) /* Put function argument in stack frame. */ movl 8(%edx), %eax movl %eax, 0(%esp) /* Get function. */ movl 4(%edx), %eax /* Away we go. */ call *%eax /* Switch back to old stack. */ movl 4(%esp), %edx xchgl %edx, %esp /* Return to caller. */ ret #elif defined(__SPU__) #elif defined(__powerpc64__) .text #define _prologue(n) \ .align 2 ; \ .globl n, .##n ; \ .section ".opd", "aw" ; \ .align 3 ; \ n: .quad .##n, .TOC.@tocbase, 0 ; \ .previous ; \ .size n, 24 ; \ .type .##n, @function ; \ .##n: #define _foreach_14_31 \ _ (14, 0) _ (15, 1) _ (16, 2) _ (17, 3) _ (18, 4) _ (19, 5) \ _ (20, 6) _ (21, 7) _ (22, 8) _ (23, 9) _ (24, 10) _ (25, 11) \ _ (26, 12) _ (27, 13) _ (28, 14) _ (29, 15) _ (30, 16) _ (31, 17) #define _foreach_20_31 \ _ (20, 0) _ (21, 1) _ (22, 2) _ (23, 3) _ (24, 4) _ (25, 5) \ _ (26, 6) _ (27, 7) _ (28, 8) _ (29, 9) _ (30, 10) _ (31, 11) #ifdef __ALTIVEC__ #define CLIB_POWERPC_ALTIVEC_N_REGS 12 #else #define CLIB_POWERPC_ALTIVEC_N_REGS 0 #endif _prologue (cdecl(clib_setjmp)) mflr 0 std 0, 8*0(3) std 1, 8*1(3) std 2, 8*2(3) mfcr 0 std 0, 8*3(3) mfspr 0, 256 stw 0, 8*4(3) /* gprs 14 - 31 */ #define _(a,b) std a, 8*((b) + 4 + 18*0)(3) ; _foreach_14_31 #undef _ /* fprs 14 - 31 */ #define _(a,b) stfd a, 8*((b) + 4 + 18*1)(3) ; _foreach_14_31 #undef _ #if CLIB_POWERPC_ALTIVEC_N_REGS > 0 /* vrs 20 - 31 */ li 5, 8*(4 + 18*2) #define _(a,b) stvx a, 5, 3 ; addi 5, 5, 16 ; _foreach_20_31 #undef _ #endif /* CLIB_POWERPC_ALTIVEC_N_REGS > 0 */ /* Return value. */ mr 3, 4 blr _prologue (cdecl(clib_longjmp)) ld 0, 8*0(3) mtlr 0 ld 1, 8*1(3) ld 2, 8*2(3) ld 0, 8*3(3) mtcrf 0xff, 0 lwz 0, 8*3(3) mtspr 256, 0 /* gprs 14 - 31 */ #define _(a,b) ld a, 8*((b) + 4 + 18*0)(3) ; _foreach_14_31 #undef _ /* fprs 14 - 31 */ #define _(a,b) lfd a, 8*((b) + 4 + 18*1)(3) ; _foreach_14_31 #undef _ #if CLIB_POWERPC_ALTIVEC_N_REGS > 0 /* vrs 20 - 31 */ li 5, 8*(4 + 18*2) #define _(a,b) lvx a, 5, 3 ; addi 5, 5, 16 ; _foreach_20_31 #undef _ #endif /* CLIB_POWERPC_ALTIVEC_N_REGS > 0 */ /* Return value. */ mr 3, 4 blr .globl cdecl(clib_calljmp) .section ".opd","aw" .align 3 cdecl(clib_calljmp): .quad .L.cdecl(clib_calljmp),.TOC.@tocbase,0 .previous .type cdecl(clib_calljmp), @function .L.cdecl(clib_calljmp): mflr 0 mr 9,3 std 0,16(1) stdu 1,-112(1) #APP std 1,-8(5) addi 5,5,-256 mr 1,5 #NO_APP ld 10,0(9) std 2,40(1) mr 3,4 mtctr 10 ld 11,16(9) ld 2,8(9) bctrl ld 2,40(1) #APP addi 1,1,256 ld 1,-8(1) #NO_APP addi 1,1,112 ld 0,16(1) mtlr 0 blr .long 0 .byte 0,0,0,1,128,0,0,0 .size cdecl(clib_calljmp),.-.L.cdecl(clib_calljmp) #elif defined(__powerpc__) #define _foreach_14_31 \ _ (14, 0) _ (15, 1) _ (16, 2) _ (17, 3) _ (18, 4) _ (19, 5) \ _ (20, 6) _ (21, 7) _ (22, 8) _ (23, 9) _ (24, 10) _ (25, 11) \ _ (26, 12) _ (27, 13) _ (28, 14) _ (29, 15) _ (30, 16) _ (31, 17) #define _foreach_20_31 \ _ (20, 0) _ (21, 1) _ (22, 2) _ (23, 3) _ (24, 4) _ (25, 5) \ _ (26, 6) _ (27, 7) _ (28, 8) _ (29, 9) _ (30, 10) _ (31, 11) #ifdef __ALTIVEC__ #define CLIB_POWERPC_ALTIVEC_N_REGS 12 #else #define CLIB_POWERPC_ALTIVEC_N_REGS 0 #endif .global cdecl(clib_setjmp) .align 4 .type cdecl(clib_setjmp), @function cdecl(clib_setjmp): mflr 0 stw 0, 4*0(3) stw 1, 4*1(3) mfcr 0 stw 0, 4*2(3) #if CLIB_POWERPC_ALTIVEC_N_REGS > 0 mfspr 0, 256 #endif stw 0, 4*3(3) #if CLIB_POWERPC_ALTIVEC_N_REGS > 0 li 5, 4*4 #define _(a,b) stvx a, 3, 5 ; addi 5, 5, 16 ; _foreach_20_31 #undef _ #endif /* CLIB_POWERPC_ALTIVEC_N_REGS > 0 */ /* gp 14 - 31 */ #define _(a,b) stw a, 4*(1*(b) + 4 + 4*CLIB_POWERPC_ALTIVEC_N_REGS + 0*18)(3) ; _foreach_14_31 #undef _ /* fp 14 - 31 */ #define _(a,b) stfd a, 4*(2*(b) + 4 + 4*CLIB_POWERPC_ALTIVEC_N_REGS + 1*18)(3) ; _foreach_14_31 #undef _ /* Return value. */ mr 3, 4 blr .global cdecl(clib_longjmp) .align 4 .type cdecl(clib_longjmp), @function cdecl(clib_longjmp): lwz 0, 4*0(3) mtlr 0 lwz 1, 4*1(3) lwz 0, 4*2(3) mtcr 0 lwz 0, 4*3(3) #if CLIB_POWERPC_ALTIVEC_N_REGS > 0 mtspr 256, 0 #endif #if CLIB_POWERPC_ALTIVEC_N_REGS > 0 li 5, 4*4 #define _(a,b) lvx a, 3, 5 ; addi 5, 5, 16 ; _foreach_20_31 #undef _ #endif /* CLIB_POWERPC_ALTIVEC_N_REGS > 0 */ /* gp 14 - 31 */ #define _(a,b) lwz a, 4*(1*(b) + 4 + 4*CLIB_POWERPC_ALTIVEC_N_REGS + 0*18)(3) ; _foreach_14_31 #undef _ /* fp 14 - 31 */ #define _(a,b) lfd a, 4*(2*(b) + 4 + 4*CLIB_POWERPC_ALTIVEC_N_REGS + 1*18)(3) ; _foreach_14_31 #undef _ /* Return value. */ mr 3, 4 blr .global cdecl(clib_calljmp) .align 4 .type cdecl(clib_calljmp), @function cdecl(clib_calljmp): /* Make sure stack is 16 byte aligned. */ andi. 0, 5, 0xf sub 5, 5, 0 addi 5, 5, -16 /* Save old stack/link pointer on new stack. */ stw 1, 0(5) mflr 0 stw 0, 4(5) /* account for (sp, lr) tuple, and keep aligned */ addi 5, 5, -16 /* Switch stacks. */ mr 1, 5 /* Move argument into place. */ mtctr 3 mr 3, 4 /* Away we go. */ bctrl /* back to our synthetic frame */ addi 1,1,16 /* Switch back to old stack. */ lwz 0, 4(1) mtlr 0 lwz 0, 0(1) mr 1, 0 /* Return to caller. */ blr #elif defined(__arm__) .global cdecl(clib_setjmp) .align 4 .type cdecl(clib_setjmp), %function cdecl(clib_setjmp): mov ip, r0 /* jmp buffer */ /* Save integer registers */ stmia ip!, {v1-v6, sl, fp, sp, lr} #ifdef __IWMMXT__ /* Save the call-preserved iWMMXt registers. */ wstrd wr10, [ip], #8 wstrd wr11, [ip], #8 wstrd wr12, [ip], #8 wstrd wr13, [ip], #8 wstrd wr14, [ip], #8 wstrd wr15, [ip], #8 #endif /* Give back user's return value. */ mov r0, r1 bx lr .global cdecl(clib_longjmp) .align 4 .type cdecl(clib_longjmp), %function cdecl(clib_longjmp): mov ip, r0 /* jmp buffer */ /* Restore integer registers. */ ldmia ip!, {v1-v6, sl, fp, sp, lr} #ifdef __IWMMXT__ /* Save the call-preserved iWMMXt registers. */ wldrd wr10, [ip], #8 wldrd wr11, [ip], #8 wldrd wr12, [ip], #8 wldrd wr13, [ip], #8 wldrd wr14, [ip], #8 wldrd wr15, [ip], #8 #endif /* Give back user's return value. */ mov r0, r1 bx lr .global cdecl(clib_calljmp) .align 4 .type cdecl(clib_calljmp), %function cdecl(clib_calljmp): /* Make sure stack is 8 byte aligned. */ bic r2, r2, #7 /* Allocate space for stack/link pointer on new stack. */ sub r2, r2, #8 /* Save old stack/link pointer on new stack. */ str sp, [r2, #0] str lr, [r2, #4] /* Switch stacks. */ mov sp, r2 /* Save function to call. */ mov ip, r0 /* Move argument into place. */ mov r0, r1 /* Away we go. */ bx ip /* Switch back to old stack. */ ldr lr, [sp, #4] ldr ip, [sp, #0] mov sp, ip /* Return to caller. */ bx lr #elif defined(__xtensa__) /* FIXME implement if needed. */ .global cdecl(clib_setjmp) .align 4 .type cdecl(clib_setjmp), %function cdecl(clib_setjmp): 1: j 1b .global cdecl(clib_longjmp) .align 4 .type cdecl(clib_longjmp), @function cdecl(clib_longjmp): 1: j 1b .global cdecl(clib_calljmp) .align 4 .type cdecl(clib_calljmp), %function cdecl(clib_calljmp): 1: j 1b #elif defined(__TMS320C6X__) /* FIXME implement if needed. */ .global cdecl(clib_setjmp) .align 4 .type cdecl(clib_setjmp), %function cdecl(clib_setjmp): 1: B .S1 1b .global cdecl(clib_longjmp) .align 4 .type cdecl(clib_longjmp), @function cdecl(clib_longjmp): 1: B .S1 1b .global cdecl(clib_calljmp) .align 4 .type cdecl(clib_calljmp), %function cdecl(clib_calljmp): 1: B .S1 1b #elif defined(_mips) && __mips == 64 .global cdecl(clib_setjmp) .align 8 .type cdecl(clib_setjmp), %function cdecl(clib_setjmp): sd $ra, 0($a0) sd $sp, 8($a0) sd $gp, 16($a0) sd $16, 24($a0) sd $17, 32($a0) sd $18, 40($a0) sd $19, 48($a0) sd $20, 56($a0) sd $21, 64($a0) sd $22, 72($a0) sd $23, 80($a0) sd $30, 88($a0) move $v0, $a1 jr $ra nop .global cdecl(clib_longjmp) .align 8 .type cdecl(clib_longjmp), @function cdecl(clib_longjmp): move $v0, $a1 bne $v0, $0, 1f nop daddu $v0, $v0, 1 1: ld $ra, 0($a0) ld $sp, 8($a0) ld $gp, 16($a0) ld $16, 24($a0) ld $17, 32($a0) ld $18, 40($a0) ld $19, 48($a0) ld $20, 56($a0) ld $21, 64($a0) ld $22, 72($a0) ld $23, 80($a0) ld $30, 88($a0) jr $ra nop .global cdecl(clib_calljmp) .align 8 .type cdecl(clib_calljmp), %function cdecl(clib_calljmp): /* Force 16 byte alignment of the new stack */ li $t1, -16 and $t0, $a2, $t1 /* Save old ra/gp/sp on new stack */ daddiu $t0, $t0, (-24) sd $ra, 0($t0) sd $gp, 8($t0) sd $sp, 16($t0) /* Switch stacks */ move $sp, $t0 /* Away we go */ move $t9, $a0 move $a0, $a1 jalr $t9 nop /* Switch back to old ra/gp/sp */ move $t0, $sp ld $ra, 0($t0) ld $gp, 8($t0) ld $sp, 16($t0) /* Return to caller */ jr $ra nop #elif defined (__aarch64__) /* Copyright (c) 2011, 2012 ARM Ltd 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. 3. The name of the company may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD 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 W