#define _JB_D10_D11 (_JB_D12_D13 + 2)
#define _JB_D8_D9 (_JB_D10_D11 + 2)
+#define MANGLE_REGISTERS 1
+.macro m_mangle_registers reg, sp_reg
+#if MANGLE_REGISTERS
+ eor x19, x19, \reg
+ eor x20, x20, \reg
+ eor x21, x21, \reg
+ eor x22, x22, \reg
+ eor x23, x23, \reg
+ eor x24, x24, \reg
+ eor x25, x25, \reg
+ eor x26, x26, \reg
+ eor x27, x27, \reg
+ eor x28, x28, \reg
+ eor x29, x29, \reg
+ eor x30, x30, \reg
+ eor \sp_reg, \sp_reg, \reg
+#endif
+.endm
+
+.macro m_unmangle_registers reg, sp_reg
+ m_mangle_registers \reg, sp_reg=\sp_reg
+.endm
+
ENTRY(setjmp)
mov w1, #1
b sigsetjmp
// int sigsetjmp(sigjmp_buf env, int save_signal_mask);
ENTRY(sigsetjmp)
- // Record whether or not we're saving the signal mask.
- str w1, [x0, #(_JB_SIGFLAG * 8)]
+ stp x0, x30, [sp, #-16]!
+ .cfi_def_cfa_offset 16
+ .cfi_rel_offset x0, 0
+ .cfi_rel_offset x30, 8
+
+ // Get the cookie and store it along with the signal flag.
+ mov x0, x1
+ bl __bionic_setjmp_cookie_get
+ mov x1, x0
+ ldr x0, [sp, #0]
+ str x1, [x0, #(_JB_SIGFLAG * 8)]
// Do we need to save the signal mask?
- cbz w1, 1f
+ tbz w1, #0, 1f
+
+ // Save the cookie for later.
+ stp x1, xzr, [sp, #-16]!
+ .cfi_adjust_cfa_offset 16
// Save current signal mask.
- stp x0, x30, [sp, #-16]!
// The 'how' argument is ignored if new_mask is NULL.
mov x1, #0 // NULL.
add x2, x0, #(_JB_SIGMASK * 8) // old_mask.
bl sigprocmask
- ldp x0, x30, [sp], #16
+
+ ldp x1, xzr, [sp], #16
+ .cfi_adjust_cfa_offset -16
1:
+ // Restore original x0 and lr.
+ ldp x0, x30, [sp], #16
+ .cfi_adjust_cfa_offset -16
+ .cfi_restore x0
+ .cfi_restore x30
+
+ // Mask off the signal flag bit.
+ bic x1, x1, #1
+
// Save core registers.
mov x10, sp
+ m_mangle_registers x1, sp_reg=x10
stp x30, x10, [x0, #(_JB_X30_SP * 8)]
stp x28, x29, [x0, #(_JB_X28_X29 * 8)]
stp x26, x27, [x0, #(_JB_X26_X27 * 8)]
stp x22, x23, [x0, #(_JB_X22_X23 * 8)]
stp x20, x21, [x0, #(_JB_X20_X21 * 8)]
str x19, [x0, #(_JB_X19 * 8)]
+ m_unmangle_registers x1, sp_reg=x10
// Save floating point registers.
stp d14, d15, [x0, #(_JB_D14_D15 * 8)]
// void siglongjmp(sigjmp_buf env, int value);
ENTRY(siglongjmp)
// Do we need to restore the signal mask?
- ldr w9, [x0, #(_JB_SIGFLAG * 8)]
- cbz w9, 1f
+ ldr x2, [x0, #(_JB_SIGFLAG * 8)]
+ tbz w2, #0, 1f
- // Restore signal mask.
stp x0, x30, [sp, #-16]!
+ .cfi_adjust_cfa_offset 16
+ .cfi_rel_offset x0, 0
+ .cfi_rel_offset x30, 8
+
+ // Restore signal mask.
mov x19, x1 // Save 'value'.
+
mov x2, x0
mov x0, #2 // SIG_SETMASK
add x1, x2, #(_JB_SIGMASK * 8) // new_mask.
mov x2, #0 // NULL.
bl sigprocmask
mov x1, x19 // Restore 'value'.
+
+ // Restore original x0 and lr.
ldp x0, x30, [sp], #16
+ .cfi_adjust_cfa_offset -16
+ .cfi_restore x0
+ .cfi_restore x30
+ ldr x2, [x0, #(_JB_SIGFLAG * 8)]
1:
// Restore core registers.
+ bic x2, x2, #1
ldp x30, x10, [x0, #(_JB_X30_SP * 8)]
- mov sp, x10
ldp x28, x29, [x0, #(_JB_X28_X29 * 8)]
ldp x26, x27, [x0, #(_JB_X26_X27 * 8)]
ldp x24, x25, [x0, #(_JB_X24_X25 * 8)]
ldp x22, x23, [x0, #(_JB_X22_X23 * 8)]
ldp x20, x21, [x0, #(_JB_X20_X21 * 8)]
ldr x19, [x0, #(_JB_X19 * 8)]
+ m_unmangle_registers x2, sp_reg=x10
+ mov sp, x10
+
+ stp x0, x1, [sp, #-16]!
+ .cfi_adjust_cfa_offset 16
+ .cfi_rel_offset x0, 0
+ .cfi_rel_offset x1, 8
+ stp x30, xzr, [sp, #-16]!
+ .cfi_adjust_cfa_offset 16
+ .cfi_rel_offset x30, 0
+ ldr x0, [x0, #(_JB_SIGFLAG * 8)]
+ bl __bionic_setjmp_cookie_check
+ ldp x30, xzr, [sp], #16
+ .cfi_adjust_cfa_offset -16
+ .cfi_restore x30
+ ldp x0, x1, [sp], #16
+ .cfi_adjust_cfa_offset -16
+ .cfi_restore x0
+ .cfi_restore x1
// Restore floating point registers.
ldp d14, d15, [x0, #(_JB_D14_D15 * 8)]
ldp d10, d11, [x0, #(_JB_D10_D11 * 8)]
ldp d8, d9, [x0, #(_JB_D8_D9 * 8)]
- // Validate sp (sp mod 16 = 0) and lr (lr mod 4 = 0).
- tst x30, #3
- b.ne longjmperror
- mov x10, sp
- tst x10, #15
- b.ne longjmperror
-
// Set return value.
cmp w1, wzr
csinc w0, w1, wzr, ne
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