| //===------------------------ UnwindRegistersSave.S -----------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "assembly.h" |
| |
| .text |
| |
| #if __i386__ |
| |
| # |
| # extern int unw_getcontext(unw_context_t* thread_state) |
| # |
| # On entry: |
| # + + |
| # +-----------------------+ |
| # + thread_state pointer + |
| # +-----------------------+ |
| # + return address + |
| # +-----------------------+ <-- SP |
| # + + |
| # |
| DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) |
| push %eax |
| movl 8(%esp), %eax |
| movl %ebx, 4(%eax) |
| movl %ecx, 8(%eax) |
| movl %edx, 12(%eax) |
| movl %edi, 16(%eax) |
| movl %esi, 20(%eax) |
| movl %ebp, 24(%eax) |
| movl %esp, %edx |
| addl $8, %edx |
| movl %edx, 28(%eax) # store what sp was at call site as esp |
| # skip ss |
| # skip eflags |
| movl 4(%esp), %edx |
| movl %edx, 40(%eax) # store return address as eip |
| # skip cs |
| # skip ds |
| # skip es |
| # skip fs |
| # skip gs |
| movl (%esp), %edx |
| movl %edx, (%eax) # store original eax |
| popl %eax |
| xorl %eax, %eax # return UNW_ESUCCESS |
| ret |
| |
| #elif __x86_64__ |
| |
| # |
| # extern int unw_getcontext(unw_context_t* thread_state) |
| # |
| # On entry: |
| # thread_state pointer is in rdi |
| # |
| DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) |
| movq %rax, (%rdi) |
| movq %rbx, 8(%rdi) |
| movq %rcx, 16(%rdi) |
| movq %rdx, 24(%rdi) |
| movq %rdi, 32(%rdi) |
| movq %rsi, 40(%rdi) |
| movq %rbp, 48(%rdi) |
| movq %rsp, 56(%rdi) |
| addq $8, 56(%rdi) |
| movq %r8, 64(%rdi) |
| movq %r9, 72(%rdi) |
| movq %r10, 80(%rdi) |
| movq %r11, 88(%rdi) |
| movq %r12, 96(%rdi) |
| movq %r13,104(%rdi) |
| movq %r14,112(%rdi) |
| movq %r15,120(%rdi) |
| movq (%rsp),%rsi |
| movq %rsi,128(%rdi) # store return address as rip |
| # skip rflags |
| # skip cs |
| # skip fs |
| # skip gs |
| xorl %eax, %eax # return UNW_ESUCCESS |
| ret |
| |
| #elif __ppc__ |
| |
| ; |
| ; extern int unw_getcontext(unw_context_t* thread_state) |
| ; |
| ; On entry: |
| ; thread_state pointer is in r3 |
| ; |
| DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) |
| stw r0, 8(r3) |
| mflr r0 |
| stw r0, 0(r3) ; store lr as ssr0 |
| stw r1, 12(r3) |
| stw r2, 16(r3) |
| stw r3, 20(r3) |
| stw r4, 24(r3) |
| stw r5, 28(r3) |
| stw r6, 32(r3) |
| stw r7, 36(r3) |
| stw r8, 40(r3) |
| stw r9, 44(r3) |
| stw r10, 48(r3) |
| stw r11, 52(r3) |
| stw r12, 56(r3) |
| stw r13, 60(r3) |
| stw r14, 64(r3) |
| stw r15, 68(r3) |
| stw r16, 72(r3) |
| stw r17, 76(r3) |
| stw r18, 80(r3) |
| stw r19, 84(r3) |
| stw r20, 88(r3) |
| stw r21, 92(r3) |
| stw r22, 96(r3) |
| stw r23,100(r3) |
| stw r24,104(r3) |
| stw r25,108(r3) |
| stw r26,112(r3) |
| stw r27,116(r3) |
| stw r28,120(r3) |
| stw r29,124(r3) |
| stw r30,128(r3) |
| stw r31,132(r3) |
| |
| ; save VRSave register |
| mfspr r0,256 |
| stw r0,156(r3) |
| ; save CR registers |
| mfcr r0 |
| stw r0,136(r3) |
| ; save CTR register |
| mfctr r0 |
| stw r0,148(r3) |
| |
| ; save float registers |
| stfd f0, 160(r3) |
| stfd f1, 168(r3) |
| stfd f2, 176(r3) |
| stfd f3, 184(r3) |
| stfd f4, 192(r3) |
| stfd f5, 200(r3) |
| stfd f6, 208(r3) |
| stfd f7, 216(r3) |
| stfd f8, 224(r3) |
| stfd f9, 232(r3) |
| stfd f10,240(r3) |
| stfd f11,248(r3) |
| stfd f12,256(r3) |
| stfd f13,264(r3) |
| stfd f14,272(r3) |
| stfd f15,280(r3) |
| stfd f16,288(r3) |
| stfd f17,296(r3) |
| stfd f18,304(r3) |
| stfd f19,312(r3) |
| stfd f20,320(r3) |
| stfd f21,328(r3) |
| stfd f22,336(r3) |
| stfd f23,344(r3) |
| stfd f24,352(r3) |
| stfd f25,360(r3) |
| stfd f26,368(r3) |
| stfd f27,376(r3) |
| stfd f28,384(r3) |
| stfd f29,392(r3) |
| stfd f30,400(r3) |
| stfd f31,408(r3) |
| |
| |
| ; save vector registers |
| |
| subi r4,r1,16 |
| rlwinm r4,r4,0,0,27 ; mask low 4-bits |
| ; r4 is now a 16-byte aligned pointer into the red zone |
| |
| #define SAVE_VECTOR_UNALIGNED(_vec, _offset) \ |
| stvx _vec,0,r4 @\ |
| lwz r5, 0(r4) @\ |
| stw r5, _offset(r3) @\ |
| lwz r5, 4(r4) @\ |
| stw r5, _offset+4(r3) @\ |
| lwz r5, 8(r4) @\ |
| stw r5, _offset+8(r3) @\ |
| lwz r5, 12(r4) @\ |
| stw r5, _offset+12(r3) |
| |
| SAVE_VECTOR_UNALIGNED( v0, 424+0x000) |
| SAVE_VECTOR_UNALIGNED( v1, 424+0x010) |
| SAVE_VECTOR_UNALIGNED( v2, 424+0x020) |
| SAVE_VECTOR_UNALIGNED( v3, 424+0x030) |
| SAVE_VECTOR_UNALIGNED( v4, 424+0x040) |
| SAVE_VECTOR_UNALIGNED( v5, 424+0x050) |
| SAVE_VECTOR_UNALIGNED( v6, 424+0x060) |
| SAVE_VECTOR_UNALIGNED( v7, 424+0x070) |
| SAVE_VECTOR_UNALIGNED( v8, 424+0x080) |
| SAVE_VECTOR_UNALIGNED( v9, 424+0x090) |
| SAVE_VECTOR_UNALIGNED(v10, 424+0x0A0) |
| SAVE_VECTOR_UNALIGNED(v11, 424+0x0B0) |
| SAVE_VECTOR_UNALIGNED(v12, 424+0x0C0) |
| SAVE_VECTOR_UNALIGNED(v13, 424+0x0D0) |
| SAVE_VECTOR_UNALIGNED(v14, 424+0x0E0) |
| SAVE_VECTOR_UNALIGNED(v15, 424+0x0F0) |
| SAVE_VECTOR_UNALIGNED(v16, 424+0x100) |
| SAVE_VECTOR_UNALIGNED(v17, 424+0x110) |
| SAVE_VECTOR_UNALIGNED(v18, 424+0x120) |
| SAVE_VECTOR_UNALIGNED(v19, 424+0x130) |
| SAVE_VECTOR_UNALIGNED(v20, 424+0x140) |
| SAVE_VECTOR_UNALIGNED(v21, 424+0x150) |
| SAVE_VECTOR_UNALIGNED(v22, 424+0x160) |
| SAVE_VECTOR_UNALIGNED(v23, 424+0x170) |
| SAVE_VECTOR_UNALIGNED(v24, 424+0x180) |
| SAVE_VECTOR_UNALIGNED(v25, 424+0x190) |
| SAVE_VECTOR_UNALIGNED(v26, 424+0x1A0) |
| SAVE_VECTOR_UNALIGNED(v27, 424+0x1B0) |
| SAVE_VECTOR_UNALIGNED(v28, 424+0x1C0) |
| SAVE_VECTOR_UNALIGNED(v29, 424+0x1D0) |
| SAVE_VECTOR_UNALIGNED(v30, 424+0x1E0) |
| SAVE_VECTOR_UNALIGNED(v31, 424+0x1F0) |
| |
| li r3, 0 ; return UNW_ESUCCESS |
| blr |
| |
| |
| #elif __arm64__ |
| |
| ; |
| ; extern int unw_getcontext(unw_context_t* thread_state) |
| ; |
| ; On entry: |
| ; thread_state pointer is in x0 |
| ; |
| .align 2 |
| DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) |
| stp x0, x1, [x0, #0x000] |
| stp x2, x3, [x0, #0x010] |
| stp x4, x5, [x0, #0x020] |
| stp x6, x7, [x0, #0x030] |
| stp x8, x9, [x0, #0x040] |
| stp x10,x11, [x0, #0x050] |
| stp x12,x13, [x0, #0x060] |
| stp x14,x15, [x0, #0x070] |
| stp x16,x17, [x0, #0x080] |
| stp x18,x19, [x0, #0x090] |
| stp x20,x21, [x0, #0x0A0] |
| stp x22,x23, [x0, #0x0B0] |
| stp x24,x25, [x0, #0x0C0] |
| stp x26,x27, [x0, #0x0D0] |
| stp x28,fp, [x0, #0x0E0] |
| str lr, [x0, #0x0F0] |
| mov x1,sp |
| str x1, [x0, #0x0F8] |
| str lr, [x0, #0x100] ; store return address as pc |
| ; skip cpsr |
| stp d0, d1, [x0, #0x110] |
| stp d2, d3, [x0, #0x120] |
| stp d4, d5, [x0, #0x130] |
| stp d6, d7, [x0, #0x140] |
| stp d8, d9, [x0, #0x150] |
| stp d10,d11, [x0, #0x160] |
| stp d12,d13, [x0, #0x170] |
| stp d14,d15, [x0, #0x180] |
| stp d16,d17, [x0, #0x190] |
| stp d18,d19, [x0, #0x1A0] |
| stp d20,d21, [x0, #0x1B0] |
| stp d22,d23, [x0, #0x1C0] |
| stp d24,d25, [x0, #0x1D0] |
| stp d26,d27, [x0, #0x1E0] |
| stp d28,d29, [x0, #0x1F0] |
| str d30, [x0, #0x200] |
| str d31, [x0, #0x208] |
| ldr x0, #0 ; return UNW_ESUCCESS |
| ret |
| |
| #elif __arm__ && !__APPLE__ |
| |
| @ |
| @ extern int unw_getcontext(unw_context_t* thread_state) |
| @ |
| @ On entry: |
| @ thread_state pointer is in r0 |
| @ |
| .align 2 |
| DEFINE_LIBUNWIND_FUNCTION(unw_getcontext) |
| @ 32bit thumb-2 restrictions for stm: |
| @ . the sp (r13) cannot be in the list |
| @ . the pc (r15) cannot be in the list in an STM instruction |
| stm r0, {r0-r12} |
| str sp, [r0, #52] |
| str lr, [r0, #56] |
| str lr, [r0, #60] @ store return address as pc |
| mov r0, #0 @ return UNW_ESUCCESS |
| mov pc, lr |
| |
| #endif |
