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--- dyld/dyld-421.2/src/threadLocalHelpers.s
+++ dyld/dyld-195.5/src/threadLocalHelpers.s
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2010-2013 Apple Inc. All rights reserved.
+ * Copyright (c) 2010 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
@@ -21,33 +21,9 @@
* @APPLE_LICENSE_HEADER_END@
*/
-#include <System/machine/cpu_capabilities.h>
-
-// bool save_xxm = (*((uint32_t*)_COMM_PAGE_CPU_CAPABILITIES) & kHasAVX1_0) != 0;
-
+
+
#if __x86_64__
-
-#define RDI_SAVE_RBP -8
-#define RSI_SAVE_RBP -16
-#define RDX_SAVE_RBP -24
-#define RCX_SAVE_RBP -32
-#define RBX_SAVE_RBP -40
-#define R8_SAVE_RBP -48
-#define R9_SAVE_RBP -56
-#define R10_SAVE_RBP -64
-#define R11_SAVE_RBP -72
-#define STATIC_STACK_SIZE 256 // extra padding to allow it to be 64-byte aligned
-
-#define XMM0_SAVE_RSP 0x00
-#define XMM1_SAVE_RSP 0x10
-#define XMM2_SAVE_RSP 0x20
-#define XMM3_SAVE_RSP 0x30
-#define XMM4_SAVE_RSP 0x40
-#define XMM5_SAVE_RSP 0x50
-#define XMM6_SAVE_RSP 0x60
-#define XMM7_SAVE_RSP 0x70
-
-
// returns address of TLV in %rax, all other registers preserved
.globl _tlv_get_addr
.private_extern _tlv_get_addr
@@ -59,127 +35,33 @@
addq 16(%rdi),%rax // add offset from descriptor
ret
LlazyAllocate:
- pushq %rbp
- movq %rsp,%rbp
- subq $STATIC_STACK_SIZE,%rsp
- movq %rdi,RDI_SAVE_RBP(%rbp) # save registers that might be used as parameters
- movq %rsi,RSI_SAVE_RBP(%rbp)
- movq %rdx,RDX_SAVE_RBP(%rbp)
- movq %rcx,RCX_SAVE_RBP(%rbp)
- movq %rbx,RBX_SAVE_RBP(%rbp)
- movq %r8, R8_SAVE_RBP(%rbp)
- movq %r9, R9_SAVE_RBP(%rbp)
- movq %r10,R10_SAVE_RBP(%rbp)
- movq %r11,R11_SAVE_RBP(%rbp)
-
- cmpl $0, _inited(%rip)
- jne Linited
- movl $0x01,%eax
- cpuid # get cpu features to check on xsave instruction support
- andl $0x08000000,%ecx # check OSXSAVE bit
- movl %ecx,_hasXSave(%rip)
- cmpl $0, %ecx
- jne LxsaveInfo
- movl $1, _inited(%rip)
- jmp Lsse
-
-LxsaveInfo:
- movl $0x0D,%eax
- movl $0x00,%ecx
- cpuid # get xsave parameter info
- movl %eax,_features_lo32(%rip)
- movl %edx,_features_hi32(%rip)
- movl %ecx,_bufferSize32(%rip)
- movl $1, _inited(%rip)
-
-Linited:
- cmpl $0, _hasXSave(%rip)
- jne Lxsave
-
-Lsse:
- subq $128, %rsp
- movdqa %xmm0, XMM0_SAVE_RSP(%rsp)
- movdqa %xmm1, XMM1_SAVE_RSP(%rsp)
- movdqa %xmm2, XMM2_SAVE_RSP(%rsp)
- movdqa %xmm3, XMM3_SAVE_RSP(%rsp)
- movdqa %xmm4, XMM4_SAVE_RSP(%rsp)
- movdqa %xmm5, XMM5_SAVE_RSP(%rsp)
- movdqa %xmm6, XMM6_SAVE_RSP(%rsp)
- movdqa %xmm7, XMM7_SAVE_RSP(%rsp)
- jmp Lalloc
-
-Lxsave:
- movl _bufferSize32(%rip),%eax
- movq %rsp, %rdi
- subq %rax, %rdi # stack alloc buffer
- andq $-64, %rdi # 64-byte align stack
- movq %rdi, %rsp
- # xsave requires buffer to be zero'ed out
- movq $0, %rcx
- movq %rdi, %r8
- movq %rdi, %r9
- addq %rax, %r9
-Lz: movq %rcx, (%r8)
- addq $8, %r8
- cmpq %r8,%r9
- ja Lz
-
- movl _features_lo32(%rip),%eax
- movl _features_hi32(%rip),%edx
- # call xsave with buffer on stack and eax:edx flag bits
- # note: do not use xsaveopt, it assumes you are using the same
- # buffer as previous xsaves, and this thread is on the same cpu.
- xsave (%rsp)
-
-Lalloc:
- movq RDI_SAVE_RBP(%rbp),%rdi
- movq 8(%rdi),%rdi // get key from descriptor
- call _tlv_allocate_and_initialize_for_key
-
- cmpl $0, _hasXSave(%rip)
- jne Lxrstror
-
- movdqa XMM0_SAVE_RSP(%rsp),%xmm0
- movdqa XMM1_SAVE_RSP(%rsp),%xmm1
- movdqa XMM2_SAVE_RSP(%rsp),%xmm2
- movdqa XMM3_SAVE_RSP(%rsp),%xmm3
- movdqa XMM4_SAVE_RSP(%rsp),%xmm4
- movdqa XMM5_SAVE_RSP(%rsp),%xmm5
- movdqa XMM6_SAVE_RSP(%rsp),%xmm6
- movdqa XMM7_SAVE_RSP(%rsp),%xmm7
- jmp Ldone
-
-Lxrstror:
- movq %rax,%r11
- movl _features_lo32(%rip),%eax
- movl _features_hi32(%rip),%edx
- # call xsave with buffer on stack and eax:edx flag bits
- xrstor (%rsp)
- movq %r11,%rax
-
-Ldone:
- movq RDI_SAVE_RBP(%rbp),%rdi
- movq RSI_SAVE_RBP(%rbp),%rsi
- movq RDX_SAVE_RBP(%rbp),%rdx
- movq RCX_SAVE_RBP(%rbp),%rcx
- movq RBX_SAVE_RBP(%rbp),%rbx
- movq R8_SAVE_RBP(%rbp),%r8
- movq R9_SAVE_RBP(%rbp),%r9
- movq R10_SAVE_RBP(%rbp),%r10
- movq R11_SAVE_RBP(%rbp),%r11
- movq %rbp,%rsp
- popq %rbp
- addq 16(%rdi),%rax // result = buffer + offset
+ pushq %rbp
+ movq %rsp, %rbp
+ subq $592,%rsp
+ movq %rdi,-8(%rbp)
+ movq %rsi,-16(%rbp)
+ movq %rdx,-24(%rbp)
+ movq %rcx,-32(%rbp)
+ movq %r8,-40(%rbp)
+ movq %r9,-48(%rbp)
+ movq %r10,-56(%rbp)
+ movq %r11,-64(%rbp)
+ fxsave -592(%rbp)
+ movq 8(%rdi),%rdi // get key from descriptor
+ call _tlv_allocate_and_initialize_for_key
+ fxrstor -592(%rbp)
+ movq -64(%rbp),%r11
+ movq -56(%rbp),%r10
+ movq -48(%rbp),%r9
+ movq -40(%rbp),%r8
+ movq -32(%rbp),%rcx
+ movq -24(%rbp),%rdx
+ movq -16(%rbp),%rsi
+ movq -8(%rbp),%rdi
+ addq 16(%rdi),%rax // result = buffer + offset
+ addq $592,%rsp
+ popq %rbp
ret
-
- .data
-# Cached info from cpuid.
-_inited: .long 0
-_features_lo32: .long 0
-_features_hi32: .long 0
-_bufferSize32: .long 0
-_hasXSave: .long 0
-
#endif
@@ -220,97 +102,25 @@
ret
#endif
-#if __arm64__
- // Parameters: X0 = descriptor
- // Result: X0 = address of TLV
- // Note: all registers except X0, x16, and x17 are preserved
- .align 2
+
+#if 0
+#if __arm__
+ // returns address of TLV in r0, all other registers preserved
.globl _tlv_get_addr
.private_extern _tlv_get_addr
_tlv_get_addr:
- ldr x16, [x0, #8] // get key from descriptor
- mrs x17, TPIDRRO_EL0
- and x17, x17, #-8 // clear low 3 bits???
- ldr x17, [x17, x16, lsl #3] // get thread allocation address for this key
- cbz x17, LlazyAllocate // if NULL, lazily allocate
- ldr x16, [x0, #16] // get offset from descriptor
- add x0, x17, x16 // return allocation+offset
- ret lr
-
-LlazyAllocate:
- stp fp, lr, [sp, #-16]!
- mov fp, sp
- sub sp, sp, #288
- stp x1, x2, [sp, #-16]! // save all registers that C function might trash
- stp x3, x4, [sp, #-16]!
- stp x5, x6, [sp, #-16]!
- stp x7, x8, [sp, #-16]!
- stp x9, x10, [sp, #-16]!
- stp x11, x12, [sp, #-16]!
- stp x13, x14, [sp, #-16]!
- stp x15, x16, [sp, #-16]!
- stp q0, q1, [sp, #-32]!
- stp q2, q3, [sp, #-32]!
- stp q4, q5, [sp, #-32]!
- stp q6, q7, [sp, #-32]!
- stp x0, x17, [sp, #-16]! // save descriptor
-
- mov x0, x16 // use key from descriptor as parameter
- bl _tlv_allocate_and_initialize_for_key
- ldp x16, x17, [sp], #16 // pop descriptor
- ldr x16, [x16, #16] // get offset from descriptor
- add x0, x0, x16 // return allocation+offset
-
- ldp q6, q7, [sp], #32
- ldp q4, q5, [sp], #32
- ldp q2, q3, [sp], #32
- ldp q0, q1, [sp], #32
- ldp x15, x16, [sp], #16
- ldp x13, x14, [sp], #16
- ldp x11, x12, [sp], #16
- ldp x9, x10, [sp], #16
- ldp x7, x8, [sp], #16
- ldp x5, x6, [sp], #16
- ldp x3, x4, [sp], #16
- ldp x1, x2, [sp], #16
-
- mov sp, fp
- ldp fp, lr, [sp], #16
- ret lr
-
-#endif
-
-#if __arm__
- // returns address of TLV in r0, all other registers preserved
- .align 2
- .globl _tlv_get_addr
- .private_extern _tlv_get_addr
-_tlv_get_addr:
- push {r1,r2,r3,r7,lr}
-#if __ARM_ARCH_7K__
- sub sp, sp, #12 // align stack to 16 bytes
-#endif
- mov r7, r0 // save descriptor in r7
+ push {r1,r2,r3,r7,lr}
+ mov r7,r0 // save descriptor in r7
ldr r0, [r7, #4] // get key from descriptor
bl _pthread_getspecific // get thread value
cmp r0, #0
bne L2 // if NULL, lazily allocate
-#if __ARM_ARCH_7K__
- vpush {d0, d1, d2, d3, d4, d5, d6, d7}
-#endif
ldr r0, [r7, #4] // get key from descriptor
bl _tlv_allocate_and_initialize_for_key
-#if __ARM_ARCH_7K__
- vpop {d0, d1, d2, d3, d4, d5, d6, d7}
-#endif
L2: ldr r1, [r7, #8] // get offset from descriptor
add r0, r1, r0 // add offset into allocation block
-#if __ARM_ARCH_7K__
- add sp, sp, #12
-#endif
pop {r1,r2,r3,r7,pc}
#endif
+#endif
- .subsections_via_symbols
-