// This file is generated from a similarly-named Perl script in the BoringSSL // source tree. Do not edit by hand. #if defined(__has_feature) #if __has_feature(memory_sanitizer) && !defined(OPENSSL_NO_ASM) #define OPENSSL_NO_ASM #endif #endif #if !defined(OPENSSL_NO_ASM) #if defined(BORINGSSL_PREFIX) #include #endif .syntax unified .text @ abi_test_trampoline loads callee-saved registers from |state|, calls |func| @ with |argv|, then saves the callee-saved registers into |state|. It returns @ the result of |func|. The |unwind| argument is unused. @ uint32_t abi_test_trampoline(void (*func)(...), CallerState *state, @ const uint32_t *argv, size_t argc, @ int unwind); .globl _abi_test_trampoline .private_extern _abi_test_trampoline .align 4 _abi_test_trampoline: Labi_test_trampoline_begin: @ Save parameters and all callee-saved registers. For convenience, we @ save r9 on iOS even though it's volatile. vstmdb sp!, {d8,d9,d10,d11,d12,d13,d14,d15} stmdb sp!, {r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,lr} @ Reserve stack space for six (10-4) stack parameters, plus an extra 4 @ bytes to keep it 8-byte-aligned (see AAPCS, section 5.3). sub sp, sp, #28 @ Every register in AAPCS is either non-volatile or a parameter (except @ r9 on iOS), so this code, by the actual call, loses all its scratch @ registers. First fill in stack parameters while there are registers @ to spare. cmp r3, #4 bls Lstack_args_done mov r4, sp @ r4 is the output pointer. add r5, r2, r3, lsl #2 @ Set r5 to the end of argv. add r2, r2, #16 @ Skip four arguments. Lstack_args_loop: ldr r6, [r2], #4 cmp r2, r5 str r6, [r4], #4 bne Lstack_args_loop Lstack_args_done: @ Load registers from |r1|. vldmia r1!, {d8,d9,d10,d11,d12,d13,d14,d15} #if defined(__APPLE__) @ r9 is not volatile on iOS. ldmia r1!, {r4,r5,r6,r7,r8,r10-r11} #else ldmia r1!, {r4,r5,r6,r7,r8,r9,r10,r11} #endif @ Load register parameters. This uses up our remaining registers, so we @ repurpose lr as scratch space. ldr r3, [sp, #40] @ Reload argc. ldr lr, [sp, #36] @ Load argv into lr. cmp r3, #3 bhi Larg_r3 beq Larg_r2 cmp r3, #1 bhi Larg_r1 beq Larg_r0 b Largs_done Larg_r3: ldr r3, [lr, #12] @ argv[3] Larg_r2: ldr r2, [lr, #8] @ argv[2] Larg_r1: ldr r1, [lr, #4] @ argv[1] Larg_r0: ldr r0, [lr] @ argv[0] Largs_done: @ With every other register in use, load the function pointer into lr @ and call the function. ldr lr, [sp, #28] blx lr @ r1-r3 are free for use again. The trampoline only supports @ single-return functions. Pass r4-r11 to the caller. ldr r1, [sp, #32] vstmia r1!, {d8,d9,d10,d11,d12,d13,d14,d15} #if defined(__APPLE__) @ r9 is not volatile on iOS. stmia r1!, {r4,r5,r6,r7,r8,r10-r11} #else stmia r1!, {r4,r5,r6,r7,r8,r9,r10,r11} #endif @ Unwind the stack and restore registers. add sp, sp, #44 @ 44 = 28+16 ldmia sp!, {r4,r5,r6,r7,r8,r9,r10,r11,lr} @ Skip r0-r3 (see +16 above). vldmia sp!, {d8,d9,d10,d11,d12,d13,d14,d15} bx lr .globl _abi_test_clobber_r0 .private_extern _abi_test_clobber_r0 .align 4 _abi_test_clobber_r0: mov r0, #0 bx lr .globl _abi_test_clobber_r1 .private_extern _abi_test_clobber_r1 .align 4 _abi_test_clobber_r1: mov r1, #0 bx lr .globl _abi_test_clobber_r2 .private_extern _abi_test_clobber_r2 .align 4 _abi_test_clobber_r2: mov r2, #0 bx lr .globl _abi_test_clobber_r3 .private_extern _abi_test_clobber_r3 .align 4 _abi_test_clobber_r3: mov r3, #0 bx lr .globl _abi_test_clobber_r4 .private_extern _abi_test_clobber_r4 .align 4 _abi_test_clobber_r4: mov r4, #0 bx lr .globl _abi_test_clobber_r5 .private_extern _abi_test_clobber_r5 .align 4 _abi_test_clobber_r5: mov r5, #0 bx lr .globl _abi_test_clobber_r6 .private_extern _abi_test_clobber_r6 .align 4 _abi_test_clobber_r6: mov r6, #0 bx lr .globl _abi_test_clobber_r7 .private_extern _abi_test_clobber_r7 .align 4 _abi_test_clobber_r7: mov r7, #0 bx lr .globl _abi_test_clobber_r8 .private_extern _abi_test_clobber_r8 .align 4 _abi_test_clobber_r8: mov r8, #0 bx lr .globl _abi_test_clobber_r9 .private_extern _abi_test_clobber_r9 .align 4 _abi_test_clobber_r9: mov r9, #0 bx lr .globl _abi_test_clobber_r10 .private_extern _abi_test_clobber_r10 .align 4 _abi_test_clobber_r10: mov r10, #0 bx lr .globl _abi_test_clobber_r11 .private_extern _abi_test_clobber_r11 .align 4 _abi_test_clobber_r11: mov r11, #0 bx lr .globl _abi_test_clobber_r12 .private_extern _abi_test_clobber_r12 .align 4 _abi_test_clobber_r12: mov r12, #0 bx lr .globl _abi_test_clobber_d0 .private_extern _abi_test_clobber_d0 .align 4 _abi_test_clobber_d0: mov r0, #0 vmov s0, r0 vmov s1, r0 bx lr .globl _abi_test_clobber_d1 .private_extern _abi_test_clobber_d1 .align 4 _abi_test_clobber_d1: mov r0, #0 vmov s2, r0 vmov s3, r0 bx lr .globl _abi_test_clobber_d2 .private_extern _abi_test_clobber_d2 .align 4 _abi_test_clobber_d2: mov r0, #0 vmov s4, r0 vmov s5, r0 bx lr .globl _abi_test_clobber_d3 .private_extern _abi_test_clobber_d3 .align 4 _abi_test_clobber_d3: mov r0, #0 vmov s6, r0 vmov s7, r0 bx lr .globl _abi_test_clobber_d4 .private_extern _abi_test_clobber_d4 .align 4 _abi_test_clobber_d4: mov r0, #0 vmov s8, r0 vmov s9, r0 bx lr .globl _abi_test_clobber_d5 .private_extern _abi_test_clobber_d5 .align 4 _abi_test_clobber_d5: mov r0, #0 vmov s10, r0 vmov s11, r0 bx lr .globl _abi_test_clobber_d6 .private_extern _abi_test_clobber_d6 .align 4 _abi_test_clobber_d6: mov r0, #0 vmov s12, r0 vmov s13, r0 bx lr .globl _abi_test_clobber_d7 .private_extern _abi_test_clobber_d7 .align 4 _abi_test_clobber_d7: mov r0, #0 vmov s14, r0 vmov s15, r0 bx lr .globl _abi_test_clobber_d8 .private_extern _abi_test_clobber_d8 .align 4 _abi_test_clobber_d8: mov r0, #0 vmov s16, r0 vmov s17, r0 bx lr .globl _abi_test_clobber_d9 .private_extern _abi_test_clobber_d9 .align 4 _abi_test_clobber_d9: mov r0, #0 vmov s18, r0 vmov s19, r0 bx lr .globl _abi_test_clobber_d10 .private_extern _abi_test_clobber_d10 .align 4 _abi_test_clobber_d10: mov r0, #0 vmov s20, r0 vmov s21, r0 bx lr .globl _abi_test_clobber_d11 .private_extern _abi_test_clobber_d11 .align 4 _abi_test_clobber_d11: mov r0, #0 vmov s22, r0 vmov s23, r0 bx lr .globl _abi_test_clobber_d12 .private_extern _abi_test_clobber_d12 .align 4 _abi_test_clobber_d12: mov r0, #0 vmov s24, r0 vmov s25, r0 bx lr .globl _abi_test_clobber_d13 .private_extern _abi_test_clobber_d13 .align 4 _abi_test_clobber_d13: mov r0, #0 vmov s26, r0 vmov s27, r0 bx lr .globl _abi_test_clobber_d14 .private_extern _abi_test_clobber_d14 .align 4 _abi_test_clobber_d14: mov r0, #0 vmov s28, r0 vmov s29, r0 bx lr .globl _abi_test_clobber_d15 .private_extern _abi_test_clobber_d15 .align 4 _abi_test_clobber_d15: mov r0, #0 vmov s30, r0 vmov s31, r0 bx lr #endif // !OPENSSL_NO_ASM