+++ /dev/null
-// Scheme of saving registers to the stack
-// +--------+----------------------+
-// | | value |
-// | offset | size | register name |
-// +--------+------+---------------+
-// | 0x00 | 8 | --- | (returnt addr)
-// | -0x08 | 8 | rax |
-// | -0x10 | 8 | r11 |
-// | -0x18 | 8 | r10 |
-// | -0x20 | 8 | r9 |
-// | -0x28 | 8 | r8 |
-// | -0x30 | 8 | rcx |
-// | -0x38 | 8 | rdx |
-// | -0x40 | 8 | rsi |
-// | -0x48 | 8 | rdi |
-// | -0x50 | 16 | xmm7 |
-// | -0x60 | 16 | xmm6 |
-// | -0x70 | 16 | xmm5 |
-// | -0x80 | 16 | xmm4 |
-// | -0x90 | 16 | xmm3 |
-// | -0xa0 | 16 | xmm2 |
-// | -0xb0 | 16 | xmm1 |
-// | -0xc0 | 16 | xmm0 |
-
-
-#define GENERAL_SAVED_REGS_COUNT 9
-#define GENERAL_SAVED_REGS_SIZE (8 * GENERAL_SAVED_REGS_COUNT)
-.macro PUSH_GENERAL_REGS
- push %rdi // 1st argument
- push %rsi // 2nd argument
- push %rdx // 3rd argument, 2nd return register
- push %rcx // 4th argument
- push %r8 // 5th argument
- push %r9 // 6th argument
- push %r10 // 1st return register
- push %r11 // temporary register
- push %rax // temporary register
-.endm
-
-.macro POP_GENERAL_REGS
- pop %rax
- pop %r11
- pop %r10
- pop %r9
- pop %r8
- pop %rcx
- pop %rdx
- pop %rsi
- pop %rdi
-.endm
-
-#define XMM_SAVED_REGS_COUNT 8
-#define XMM_SAVED_REGS_SIZE (16 * XMM_SAVED_REGS_COUNT)
-.macro PUSH_XMM_REGS
- sub $XMM_SAVED_REGS_SIZE, %rsp
- movaps %xmm0, 0x00(%rsp)
- movaps %xmm1, 0x10(%rsp)
- movaps %xmm2, 0x20(%rsp)
- movaps %xmm3, 0x30(%rsp)
- movaps %xmm4, 0x40(%rsp)
- movaps %xmm5, 0x50(%rsp)
- movaps %xmm6, 0x60(%rsp)
- movaps %xmm7, 0x70(%rsp)
-.endm
-
-.macro POP_XMM_REGS
- movaps 0x70(%rsp), %xmm7
- movaps 0x60(%rsp), %xmm6
- movaps 0x50(%rsp), %xmm5
- movaps 0x40(%rsp), %xmm4
- movaps 0x30(%rsp), %xmm3
- movaps 0x20(%rsp), %xmm2
- movaps 0x10(%rsp), %xmm1
- movaps 0x00(%rsp), %xmm0
- add $XMM_SAVED_REGS_SIZE, %rsp
-.endm
-
-#define RETADDR_OFFSET (GENERAL_SAVED_REGS_SIZE + XMM_SAVED_REGS_SIZE)
-.macro PUSH_REGS
- PUSH_GENERAL_REGS
- PUSH_XMM_REGS
-.endm
-
-.macro POP_REGS
- POP_XMM_REGS
- POP_GENERAL_REGS
-.endm
-
-
-// Export symbols
-.global tizenASanWrapper
-.global tizenASanWrapperSize
-.global tizenASanWrapperEntryOffset
-
-.text
-.code64
-
-tizenASanWrapper:
-// !!! ATTENTION !!!
-// Don't move this labels (target, pushAddr, popAddr)
-// because they mapped to AuxiliaryCalls struct from src/vm/tizenasanenv.cpp
-target: .quad 0xdeadbeef0badc0de
-pushAddr: .quad 0xdeadbeef0badc0de // void pushAddr(LPVOID addr)
-popAddr: .quad 0xdeadbeef0badc0de // LPVOID popAddr()
-
-
-entryPointer:
- // Save context
- PUSH_REGS
-
- // Save the return address and call 'pre handler'
- mov RETADDR_OFFSET(%rsp), %rdi // rdi: get return address
- call *pushAddr(%rip) // save the return address
-
- // Change the return address
- call next
-next:
- pop %rax // rax: get current rip
- add $(postLabel - next), %rax // rax: add offset to 'postLabel'
- mov %rax, RETADDR_OFFSET(%rsp) // change the return address
-
- // Restore context
- POP_REGS
-
- // Call original function
- jmp *target(%rip)
-postLabel:
- sub $8, %rsp // add space for the return addr
-
- // Save context
- PUSH_REGS
-
- // Get the return address and call 'post handler'
- call *popAddr(%rip) // rax: get the return address
- mov %rax, (RETADDR_OFFSET)(%rsp) // restore the return address
-
- // Restore context
- POP_REGS
-
- // Return
- ret
-
-tizenASanWrapperSize: .long . - tizenASanWrapper
-tizenASanWrapperEntryOffset: .long entryPointer - tizenASanWrapper