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revert valgrind

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This commit is contained in:
Lucy Phipps 2021-08-27 03:33:23 +01:00
parent 133eee0e01
commit 279432d4fa
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GPG Key ID: 8F688A3DB7869BFE
2 changed files with 20 additions and 203 deletions
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222
packages/valgrind/aarch64-setjmp.S
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@ -26,27 +26,21 @@
* SUCH DAMAGE.
*/
#ifdef __aarch64__
// Copied and simplified macros from bionic_asm.h.
#define ENTRY(f) \
.text; \
.globl f; \
.balign 16; \
.type f, %function; \
.type f, @function; \
f: \
.cfi_startproc;; \
.cfi_startproc \
#define END(f) \
.cfi_endproc; \
.size f, .-f; \
// Size of the shadow call stack. This must be a power of 2.
#define SCS_SIZE (8 * 1024)
#define ALIAS_SYMBOL(alias, original) \
.globl alias; \
.equ alias, original; \
// According to AARCH64 PCS document we need to save the following
// registers:
//
@ -63,14 +57,14 @@
// word name description
// 0 sigflag/cookie setjmp cookie in top 31 bits, signal mask flag in low bit
// 1 sigmask signal mask (not used with _setjmp / _longjmp)
// 2 core_base base of core registers (x18-x30, sp)
// (We only store the low bits of x18 to avoid leaking the
// shadow call stack address into memory.)
// 16 float_base base of float registers (d8-d15)
// 24 checksum checksum of core registers
// 25 reserved reserved entries (room to grow)
// 2 core_base base of core registers (x19-x30, sp)
// 15 float_base base of float registers (d8-d15)
// 23 checksum checksum of core registers
// 24 reserved reserved entries (room to grow)
// 32
// 'sigmask' and 'checksum' are not used in this simplified version for valgrind.
#define _JB_SIGFLAG 0
#define _JB_SIGMASK (_JB_SIGFLAG + 1)
#define _JB_X30_SP (_JB_SIGMASK + 1)
@ -79,110 +73,23 @@
#define _JB_X24_X25 (_JB_X26_X27 + 2)
#define _JB_X22_X23 (_JB_X24_X25 + 2)
#define _JB_X20_X21 (_JB_X22_X23 + 2)
#define _JB_SCS_X19 (_JB_X20_X21 + 2)
#define _JB_D14_D15 (_JB_SCS_X19 + 2)
#define _JB_X19 (_JB_X20_X21 + 2)
#define _JB_D14_D15 (_JB_X19 + 1)
#define _JB_D12_D13 (_JB_D14_D15 + 2)
#define _JB_D10_D11 (_JB_D12_D13 + 2)
#define _JB_D8_D9 (_JB_D10_D11 + 2)
#define _JB_CHECKSUM (_JB_D8_D9 + 2)
#define SCS_MASK (SCS_SIZE - 1)
.macro m_mangle_registers reg, sp_reg
eor x3, x3, \reg
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
.endm
.macro m_calculate_checksum dst, src, scratch
mov \dst, #0
.irp i,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23
ldr \scratch, [\src, #(\i * 8)]
eor \dst, \dst, \scratch
.endr
.endm
.macro m_unmangle_registers reg, sp_reg
m_mangle_registers \reg, sp_reg=\sp_reg
.endm
// int setjmp(jmp_buf env);
ENTRY(setjmp)
mov w1, #1
b sigsetjmp
END(setjmp)
ENTRY(_setjmp)
mov w1, #0
b sigsetjmp
END(_setjmp)
// int sigsetjmp(sigjmp_buf env, int save_signal_mask);
ENTRY(sigsetjmp)
paciasp
.cfi_negate_ra_state
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?
tbz w1, #0, 1f
// Save the cookie for later.
stp x1, xzr, [sp, #-16]!
.cfi_adjust_cfa_offset 16
// Save current signal mask.
// 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 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
// Mask off the high bits of the shadow call stack pointer.
and x3, x18, #SCS_MASK
// 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 x24, x25, [x0, #(_JB_X24_X25 * 8)]
stp x22, x23, [x0, #(_JB_X22_X23 * 8)]
stp x20, x21, [x0, #(_JB_X20_X21 * 8)]
stp x3, x19, [x0, #(_JB_SCS_X19 * 8)]
m_unmangle_registers x1, sp_reg=x10
str x19, [x0, #(_JB_X19 * 8)]
// Save floating point registers.
stp d14, d15, [x0, #(_JB_D14_D15 * 8)]
@ -190,108 +97,22 @@ ENTRY(sigsetjmp)
stp d10, d11, [x0, #(_JB_D10_D11 * 8)]
stp d8, d9, [x0, #(_JB_D8_D9 * 8)]
// Calculate the checksum.
m_calculate_checksum x12, x0, x2
str x12, [x0, #(_JB_CHECKSUM * 8)]
mov w0, #0
autiasp
.cfi_negate_ra_state
ret
END(sigsetjmp)
END(setjmp)
// void siglongjmp(sigjmp_buf env, int value);
ENTRY(siglongjmp)
// Check the checksum before doing anything.
m_calculate_checksum x12, x0, x2
ldr x2, [x0, #(_JB_CHECKSUM * 8)]
cmp x2, x12
bne __bionic_setjmp_checksum_mismatch
#if __has_feature(hwaddress_sanitizer)
stp x0, x30, [sp, #-16]!
.cfi_adjust_cfa_offset 16
.cfi_rel_offset x0, 0
.cfi_rel_offset x30, 8
mov x19, x1 // Save 'value'.
// load and unmangle destination SP
ldr x2, [x0, #(_JB_SIGFLAG * 8)]
bic x2, x2, #1
ldr x0, [x0, #(_JB_X30_SP * 8 + 8)]
eor x0, x0, x2
bl __hwasan_handle_longjmp
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
#endif
// Do we need to restore the signal mask?
ldr x2, [x0, #(_JB_SIGFLAG * 8)]
tbz w2, #0, 1f
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:
// void longjmp(jmp_buf env, int value);
ENTRY(longjmp)
// Restore core registers.
bic x2, x2, #1
// x30 was saved with PAC to jmp_buf in sigsetjmp().
ldp x30, x10, [x0, #(_JB_X30_SP * 8)]
.cfi_negate_ra_state
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)]
ldp x3, x19, [x0, #(_JB_SCS_X19 * 8)]
m_unmangle_registers x2, sp_reg=x10
ldr x19, [x0, #(_JB_X19 * 8)]
mov sp, x10
// Restore the low bits of the shadow call stack pointer.
and x18, x18, #~SCS_MASK
orr x18, x3, x18
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 d12, d13, [x0, #(_JB_D12_D13 * 8)]
@ -301,10 +122,7 @@ ENTRY(siglongjmp)
// Set return value.
cmp w1, wzr
csinc w0, w1, wzr, ne
autiasp
.cfi_negate_ra_state
ret
END(siglongjmp)
END(longjmp)
ALIAS_SYMBOL(longjmp, siglongjmp)
ALIAS_SYMBOL(_longjmp, siglongjmp)
#endif // __aarch64__

1
packages/valgrind/build.sh
View File

@ -3,7 +3,6 @@ TERMUX_PKG_DESCRIPTION="Instrumentation framework for building dynamic analysis
TERMUX_PKG_LICENSE="GPL-2.0"
TERMUX_PKG_MAINTAINER="@termux"
TERMUX_PKG_VERSION=3.17.0
TERMUX_PKG_REVISION=1
TERMUX_PKG_SRCURL=ftp://sourceware.org/pub/valgrind/valgrind-${TERMUX_PKG_VERSION}.tar.bz2
TERMUX_PKG_SHA256=ad3aec668e813e40f238995f60796d9590eee64a16dff88421430630e69285a2
TERMUX_PKG_BREAKS="valgrind-dev"