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@@ -1,162 +1,168 @@
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-/*
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+/*
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* Some macros to handle stack frames in assembly.
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- */
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+ */
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+#define R15 0
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+#define R14 8
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+#define R13 16
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+#define R12 24
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+#define RBP 32
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+#define RBX 40
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-#define R15 0
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-#define R14 8
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-#define R13 16
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-#define R12 24
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-#define RBP 32
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-#define RBX 40
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/* arguments: interrupts/non tracing syscalls only save upto here*/
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-#define R11 48
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-#define R10 56
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-#define R9 64
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-#define R8 72
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-#define RAX 80
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-#define RCX 88
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-#define RDX 96
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-#define RSI 104
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-#define RDI 112
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-#define ORIG_RAX 120 /* + error_code */
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-/* end of arguments */
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+#define R11 48
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+#define R10 56
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+#define R9 64
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+#define R8 72
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+#define RAX 80
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+#define RCX 88
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+#define RDX 96
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+#define RSI 104
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+#define RDI 112
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+#define ORIG_RAX 120 /* + error_code */
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+/* end of arguments */
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+
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/* cpu exception frame or undefined in case of fast syscall. */
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-#define RIP 128
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-#define CS 136
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-#define EFLAGS 144
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-#define RSP 152
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-#define SS 160
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-#define ARGOFFSET R11
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-#define SWFRAME ORIG_RAX
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+#define RIP 128
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+#define CS 136
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+#define EFLAGS 144
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+#define RSP 152
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+#define SS 160
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+
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+#define ARGOFFSET R11
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+#define SWFRAME ORIG_RAX
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- .macro SAVE_ARGS addskip=0,norcx=0,nor891011=0
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- subq $9*8+\addskip,%rsp
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+ .macro SAVE_ARGS addskip=0, norcx=0, nor891011=0
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+ subq $9*8+\addskip, %rsp
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CFI_ADJUST_CFA_OFFSET 9*8+\addskip
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- movq %rdi,8*8(%rsp)
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- CFI_REL_OFFSET rdi,8*8
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- movq %rsi,7*8(%rsp)
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- CFI_REL_OFFSET rsi,7*8
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- movq %rdx,6*8(%rsp)
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- CFI_REL_OFFSET rdx,6*8
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+ movq %rdi, 8*8(%rsp)
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+ CFI_REL_OFFSET rdi, 8*8
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+ movq %rsi, 7*8(%rsp)
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+ CFI_REL_OFFSET rsi, 7*8
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+ movq %rdx, 6*8(%rsp)
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+ CFI_REL_OFFSET rdx, 6*8
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.if \norcx
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.else
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- movq %rcx,5*8(%rsp)
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- CFI_REL_OFFSET rcx,5*8
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+ movq %rcx, 5*8(%rsp)
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+ CFI_REL_OFFSET rcx, 5*8
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.endif
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- movq %rax,4*8(%rsp)
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- CFI_REL_OFFSET rax,4*8
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+ movq %rax, 4*8(%rsp)
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+ CFI_REL_OFFSET rax, 4*8
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.if \nor891011
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.else
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- movq %r8,3*8(%rsp)
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- CFI_REL_OFFSET r8,3*8
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- movq %r9,2*8(%rsp)
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- CFI_REL_OFFSET r9,2*8
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- movq %r10,1*8(%rsp)
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- CFI_REL_OFFSET r10,1*8
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- movq %r11,(%rsp)
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- CFI_REL_OFFSET r11,0*8
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+ movq %r8, 3*8(%rsp)
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+ CFI_REL_OFFSET r8, 3*8
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+ movq %r9, 2*8(%rsp)
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+ CFI_REL_OFFSET r9, 2*8
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+ movq %r10, 1*8(%rsp)
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+ CFI_REL_OFFSET r10, 1*8
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+ movq %r11, (%rsp)
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+ CFI_REL_OFFSET r11, 0*8
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.endif
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.endm
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-#define ARG_SKIP 9*8
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- .macro RESTORE_ARGS skiprax=0,addskip=0,skiprcx=0,skipr11=0,skipr8910=0,skiprdx=0
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+#define ARG_SKIP 9*8
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+
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+ .macro RESTORE_ARGS skiprax=0, addskip=0, skiprcx=0, skipr11=0, \
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+ skipr8910=0, skiprdx=0
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.if \skipr11
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.else
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- movq (%rsp),%r11
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+ movq (%rsp), %r11
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CFI_RESTORE r11
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.endif
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.if \skipr8910
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.else
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- movq 1*8(%rsp),%r10
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+ movq 1*8(%rsp), %r10
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CFI_RESTORE r10
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- movq 2*8(%rsp),%r9
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+ movq 2*8(%rsp), %r9
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CFI_RESTORE r9
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- movq 3*8(%rsp),%r8
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+ movq 3*8(%rsp), %r8
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CFI_RESTORE r8
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.endif
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.if \skiprax
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.else
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- movq 4*8(%rsp),%rax
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+ movq 4*8(%rsp), %rax
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CFI_RESTORE rax
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.endif
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.if \skiprcx
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.else
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- movq 5*8(%rsp),%rcx
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+ movq 5*8(%rsp), %rcx
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CFI_RESTORE rcx
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.endif
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.if \skiprdx
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.else
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- movq 6*8(%rsp),%rdx
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+ movq 6*8(%rsp), %rdx
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CFI_RESTORE rdx
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.endif
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- movq 7*8(%rsp),%rsi
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+ movq 7*8(%rsp), %rsi
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CFI_RESTORE rsi
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- movq 8*8(%rsp),%rdi
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+ movq 8*8(%rsp), %rdi
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CFI_RESTORE rdi
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.if ARG_SKIP+\addskip > 0
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- addq $ARG_SKIP+\addskip,%rsp
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+ addq $ARG_SKIP+\addskip, %rsp
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CFI_ADJUST_CFA_OFFSET -(ARG_SKIP+\addskip)
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.endif
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- .endm
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+ .endm
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.macro LOAD_ARGS offset
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- movq \offset(%rsp),%r11
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- movq \offset+8(%rsp),%r10
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- movq \offset+16(%rsp),%r9
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- movq \offset+24(%rsp),%r8
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- movq \offset+40(%rsp),%rcx
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- movq \offset+48(%rsp),%rdx
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- movq \offset+56(%rsp),%rsi
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- movq \offset+64(%rsp),%rdi
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- movq \offset+72(%rsp),%rax
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+ movq \offset(%rsp), %r11
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+ movq \offset+8(%rsp), %r10
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+ movq \offset+16(%rsp), %r9
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+ movq \offset+24(%rsp), %r8
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+ movq \offset+40(%rsp), %rcx
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+ movq \offset+48(%rsp), %rdx
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+ movq \offset+56(%rsp), %rsi
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+ movq \offset+64(%rsp), %rdi
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+ movq \offset+72(%rsp), %rax
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.endm
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-
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-#define REST_SKIP 6*8
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+
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+#define REST_SKIP 6*8
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+
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.macro SAVE_REST
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- subq $REST_SKIP,%rsp
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+ subq $REST_SKIP, %rsp
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CFI_ADJUST_CFA_OFFSET REST_SKIP
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- movq %rbx,5*8(%rsp)
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- CFI_REL_OFFSET rbx,5*8
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- movq %rbp,4*8(%rsp)
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- CFI_REL_OFFSET rbp,4*8
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- movq %r12,3*8(%rsp)
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- CFI_REL_OFFSET r12,3*8
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- movq %r13,2*8(%rsp)
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- CFI_REL_OFFSET r13,2*8
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- movq %r14,1*8(%rsp)
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- CFI_REL_OFFSET r14,1*8
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- movq %r15,(%rsp)
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- CFI_REL_OFFSET r15,0*8
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- .endm
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+ movq %rbx, 5*8(%rsp)
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+ CFI_REL_OFFSET rbx, 5*8
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+ movq %rbp, 4*8(%rsp)
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+ CFI_REL_OFFSET rbp, 4*8
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+ movq %r12, 3*8(%rsp)
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+ CFI_REL_OFFSET r12, 3*8
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+ movq %r13, 2*8(%rsp)
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+ CFI_REL_OFFSET r13, 2*8
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+ movq %r14, 1*8(%rsp)
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+ CFI_REL_OFFSET r14, 1*8
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+ movq %r15, (%rsp)
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+ CFI_REL_OFFSET r15, 0*8
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+ .endm
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.macro RESTORE_REST
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- movq (%rsp),%r15
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+ movq (%rsp), %r15
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CFI_RESTORE r15
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- movq 1*8(%rsp),%r14
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+ movq 1*8(%rsp), %r14
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CFI_RESTORE r14
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- movq 2*8(%rsp),%r13
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+ movq 2*8(%rsp), %r13
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CFI_RESTORE r13
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- movq 3*8(%rsp),%r12
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+ movq 3*8(%rsp), %r12
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CFI_RESTORE r12
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- movq 4*8(%rsp),%rbp
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+ movq 4*8(%rsp), %rbp
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CFI_RESTORE rbp
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- movq 5*8(%rsp),%rbx
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+ movq 5*8(%rsp), %rbx
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CFI_RESTORE rbx
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- addq $REST_SKIP,%rsp
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+ addq $REST_SKIP, %rsp
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CFI_ADJUST_CFA_OFFSET -(REST_SKIP)
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.endm
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-
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+
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.macro SAVE_ALL
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SAVE_ARGS
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SAVE_REST
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.endm
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-
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+
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.macro RESTORE_ALL addskip=0
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RESTORE_REST
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- RESTORE_ARGS 0,\addskip
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+ RESTORE_ARGS 0, \addskip
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.endm
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.macro icebp
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.byte 0xf1
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.endm
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+
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