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linux/tools/testing/selftests/bpf/progs/verifier_sdiv.c
Jenny Guanni Qu 4ac95c65ef selftests/bpf: Add tests for sdiv32/smod32 with INT_MIN dividend 
Add tests to verify that signed 32-bit division and modulo operations
produce correct results when the dividend is INT_MIN (0x80000000).

The bug fixed in the previous commit only affects the BPF interpreter
path. When JIT is enabled (the default on most architectures), the
native CPU division instruction produces the correct result and these
tests pass regardless. With bpf_jit_enable=0, the interpreter is used
and without the previous fix, INT_MIN / 2 incorrectly returns
0x40000000 instead of 0xC0000000 due to abs(S32_MIN) undefined
behavior, causing these tests to fail.

Test cases:
  - SDIV32 INT_MIN / 2 = -1073741824 (imm and reg divisor)
  - SMOD32 INT_MIN % 2 = 0 (positive and negative divisor)

Reviewed-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Signed-off-by: Jenny Guanni Qu <qguanni@gmail.com>
Link: https://lore.kernel.org/r/20260311011116.2108005-3-qguanni@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-03-21 13:12:17 -07:00

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// SPDX-License-Identifier: GPL-2.0
#include <linux/bpf.h>
#include <limits.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"
#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \
(defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64) || \
defined(__TARGET_ARCH_arm) || defined(__TARGET_ARCH_s390) || \
defined(__TARGET_ARCH_loongarch)) && \
__clang_major__ >= 18
SEC("socket")
__description("SDIV32, non-zero imm divisor, check 1")
__success __success_unpriv __retval(-20)
__naked void sdiv32_non_zero_imm_1(void)
{
asm volatile (" \
w0 = -41; \
w0 s/= 2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero imm divisor, check 2")
__success __success_unpriv __retval(-20)
__naked void sdiv32_non_zero_imm_2(void)
{
asm volatile (" \
w0 = 41; \
w0 s/= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero imm divisor, check 3")
__success __success_unpriv __retval(20)
__naked void sdiv32_non_zero_imm_3(void)
{
asm volatile (" \
w0 = -41; \
w0 s/= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero imm divisor, check 4")
__success __success_unpriv __retval(-21)
__naked void sdiv32_non_zero_imm_4(void)
{
asm volatile (" \
w0 = -42; \
w0 s/= 2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero imm divisor, check 5")
__success __success_unpriv __retval(-21)
__naked void sdiv32_non_zero_imm_5(void)
{
asm volatile (" \
w0 = 42; \
w0 s/= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero imm divisor, check 6")
__success __success_unpriv __retval(21)
__naked void sdiv32_non_zero_imm_6(void)
{
asm volatile (" \
w0 = -42; \
w0 s/= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero imm divisor, check 7")
__success __success_unpriv __retval(21)
__naked void sdiv32_non_zero_imm_7(void)
{
asm volatile (" \
w0 = 42; \
w0 s/= 2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero imm divisor, check 8")
__success __success_unpriv __retval(20)
__naked void sdiv32_non_zero_imm_8(void)
{
asm volatile (" \
w0 = 41; \
w0 s/= 2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero reg divisor, check 1")
__success __success_unpriv __retval(-20)
__naked void sdiv32_non_zero_reg_1(void)
{
asm volatile (" \
w0 = -41; \
w1 = 2; \
w0 s/= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero reg divisor, check 2")
__success __success_unpriv __retval(-20)
__naked void sdiv32_non_zero_reg_2(void)
{
asm volatile (" \
w0 = 41; \
w1 = -2; \
w0 s/= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero reg divisor, check 3")
__success __success_unpriv __retval(20)
__naked void sdiv32_non_zero_reg_3(void)
{
asm volatile (" \
w0 = -41; \
w1 = -2; \
w0 s/= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero reg divisor, check 4")
__success __success_unpriv __retval(-21)
__naked void sdiv32_non_zero_reg_4(void)
{
asm volatile (" \
w0 = -42; \
w1 = 2; \
w0 s/= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero reg divisor, check 5")
__success __success_unpriv __retval(-21)
__naked void sdiv32_non_zero_reg_5(void)
{
asm volatile (" \
w0 = 42; \
w1 = -2; \
w0 s/= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero reg divisor, check 6")
__success __success_unpriv __retval(21)
__naked void sdiv32_non_zero_reg_6(void)
{
asm volatile (" \
w0 = -42; \
w1 = -2; \
w0 s/= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero reg divisor, check 7")
__success __success_unpriv __retval(21)
__naked void sdiv32_non_zero_reg_7(void)
{
asm volatile (" \
w0 = 42; \
w1 = 2; \
w0 s/= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, non-zero reg divisor, check 8")
__success __success_unpriv __retval(20)
__naked void sdiv32_non_zero_reg_8(void)
{
asm volatile (" \
w0 = 41; \
w1 = 2; \
w0 s/= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, non-zero imm divisor, check 1")
__success __success_unpriv __retval(-20)
__naked void sdiv64_non_zero_imm_1(void)
{
asm volatile (" \
r0 = -41; \
r0 s/= 2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, non-zero imm divisor, check 2")
__success __success_unpriv __retval(-20)
__naked void sdiv64_non_zero_imm_2(void)
{
asm volatile (" \
r0 = 41; \
r0 s/= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, non-zero imm divisor, check 3")
__success __success_unpriv __retval(20)
__naked void sdiv64_non_zero_imm_3(void)
{
asm volatile (" \
r0 = -41; \
r0 s/= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, non-zero imm divisor, check 4")
__success __success_unpriv __retval(-21)
__naked void sdiv64_non_zero_imm_4(void)
{
asm volatile (" \
r0 = -42; \
r0 s/= 2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, non-zero imm divisor, check 5")
__success __success_unpriv __retval(-21)
__naked void sdiv64_non_zero_imm_5(void)
{
asm volatile (" \
r0 = 42; \
r0 s/= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, non-zero imm divisor, check 6")
__success __success_unpriv __retval(21)
__naked void sdiv64_non_zero_imm_6(void)
{
asm volatile (" \
r0 = -42; \
r0 s/= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, non-zero reg divisor, check 1")
__success __success_unpriv __retval(-20)
__naked void sdiv64_non_zero_reg_1(void)
{
asm volatile (" \
r0 = -41; \
r1 = 2; \
r0 s/= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, non-zero reg divisor, check 2")
__success __success_unpriv __retval(-20)
__naked void sdiv64_non_zero_reg_2(void)
{
asm volatile (" \
r0 = 41; \
r1 = -2; \
r0 s/= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, non-zero reg divisor, check 3")
__success __success_unpriv __retval(20)
__naked void sdiv64_non_zero_reg_3(void)
{
asm volatile (" \
r0 = -41; \
r1 = -2; \
r0 s/= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, non-zero reg divisor, check 4")
__success __success_unpriv __retval(-21)
__naked void sdiv64_non_zero_reg_4(void)
{
asm volatile (" \
r0 = -42; \
r1 = 2; \
r0 s/= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, non-zero reg divisor, check 5")
__success __success_unpriv __retval(-21)
__naked void sdiv64_non_zero_reg_5(void)
{
asm volatile (" \
r0 = 42; \
r1 = -2; \
r0 s/= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, non-zero reg divisor, check 6")
__success __success_unpriv __retval(21)
__naked void sdiv64_non_zero_reg_6(void)
{
asm volatile (" \
r0 = -42; \
r1 = -2; \
r0 s/= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD32, non-zero imm divisor, check 1")
__success __success_unpriv __retval(-1)
__naked void smod32_non_zero_imm_1(void)
{
asm volatile (" \
w0 = -41; \
w0 s%%= 2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD32, non-zero imm divisor, check 2")
__success __success_unpriv __retval(1)
__naked void smod32_non_zero_imm_2(void)
{
asm volatile (" \
w0 = 41; \
w0 s%%= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD32, non-zero imm divisor, check 3")
__success __success_unpriv __retval(-1)
__naked void smod32_non_zero_imm_3(void)
{
asm volatile (" \
w0 = -41; \
w0 s%%= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD32, non-zero imm divisor, check 4")
__success __success_unpriv __retval(0)
__naked void smod32_non_zero_imm_4(void)
{
asm volatile (" \
w0 = -42; \
w0 s%%= 2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD32, non-zero imm divisor, check 5")
__success __success_unpriv __retval(0)
__naked void smod32_non_zero_imm_5(void)
{
asm volatile (" \
w0 = 42; \
w0 s%%= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD32, non-zero imm divisor, check 6")
__success __success_unpriv __retval(0)
__naked void smod32_non_zero_imm_6(void)
{
asm volatile (" \
w0 = -42; \
w0 s%%= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD32, non-zero reg divisor, check 1")
__success __success_unpriv __retval(-1)
__naked void smod32_non_zero_reg_1(void)
{
asm volatile (" \
w0 = -41; \
w1 = 2; \
w0 s%%= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD32, non-zero reg divisor, check 2")
__success __success_unpriv __retval(1)
__naked void smod32_non_zero_reg_2(void)
{
asm volatile (" \
w0 = 41; \
w1 = -2; \
w0 s%%= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD32, non-zero reg divisor, check 3")
__success __success_unpriv __retval(-1)
__naked void smod32_non_zero_reg_3(void)
{
asm volatile (" \
w0 = -41; \
w1 = -2; \
w0 s%%= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD32, non-zero reg divisor, check 4")
__success __success_unpriv __retval(0)
__naked void smod32_non_zero_reg_4(void)
{
asm volatile (" \
w0 = -42; \
w1 = 2; \
w0 s%%= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD32, non-zero reg divisor, check 5")
__success __success_unpriv __retval(0)
__naked void smod32_non_zero_reg_5(void)
{
asm volatile (" \
w0 = 42; \
w1 = -2; \
w0 s%%= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD32, non-zero reg divisor, check 6")
__success __success_unpriv __retval(0)
__naked void smod32_non_zero_reg_6(void)
{
asm volatile (" \
w0 = -42; \
w1 = -2; \
w0 s%%= w1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero imm divisor, check 1")
__success __success_unpriv __retval(-1)
__naked void smod64_non_zero_imm_1(void)
{
asm volatile (" \
r0 = -41; \
r0 s%%= 2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero imm divisor, check 2")
__success __success_unpriv __retval(1)
__naked void smod64_non_zero_imm_2(void)
{
asm volatile (" \
r0 = 41; \
r0 s%%= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero imm divisor, check 3")
__success __success_unpriv __retval(-1)
__naked void smod64_non_zero_imm_3(void)
{
asm volatile (" \
r0 = -41; \
r0 s%%= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero imm divisor, check 4")
__success __success_unpriv __retval(0)
__naked void smod64_non_zero_imm_4(void)
{
asm volatile (" \
r0 = -42; \
r0 s%%= 2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero imm divisor, check 5")
__success __success_unpriv __retval(-0)
__naked void smod64_non_zero_imm_5(void)
{
asm volatile (" \
r0 = 42; \
r0 s%%= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero imm divisor, check 6")
__success __success_unpriv __retval(0)
__naked void smod64_non_zero_imm_6(void)
{
asm volatile (" \
r0 = -42; \
r0 s%%= -2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero imm divisor, check 7")
__success __success_unpriv __retval(0)
__naked void smod64_non_zero_imm_7(void)
{
asm volatile (" \
r0 = 42; \
r0 s%%= 2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero imm divisor, check 8")
__success __success_unpriv __retval(1)
__naked void smod64_non_zero_imm_8(void)
{
asm volatile (" \
r0 = 41; \
r0 s%%= 2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero reg divisor, check 1")
__success __success_unpriv __retval(-1)
__naked void smod64_non_zero_reg_1(void)
{
asm volatile (" \
r0 = -41; \
r1 = 2; \
r0 s%%= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero reg divisor, check 2")
__success __success_unpriv __retval(1)
__naked void smod64_non_zero_reg_2(void)
{
asm volatile (" \
r0 = 41; \
r1 = -2; \
r0 s%%= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero reg divisor, check 3")
__success __success_unpriv __retval(-1)
__naked void smod64_non_zero_reg_3(void)
{
asm volatile (" \
r0 = -41; \
r1 = -2; \
r0 s%%= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero reg divisor, check 4")
__success __success_unpriv __retval(0)
__naked void smod64_non_zero_reg_4(void)
{
asm volatile (" \
r0 = -42; \
r1 = 2; \
r0 s%%= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero reg divisor, check 5")
__success __success_unpriv __retval(0)
__naked void smod64_non_zero_reg_5(void)
{
asm volatile (" \
r0 = 42; \
r1 = -2; \
r0 s%%= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero reg divisor, check 6")
__success __success_unpriv __retval(0)
__naked void smod64_non_zero_reg_6(void)
{
asm volatile (" \
r0 = -42; \
r1 = -2; \
r0 s%%= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero reg divisor, check 7")
__success __success_unpriv __retval(0)
__naked void smod64_non_zero_reg_7(void)
{
asm volatile (" \
r0 = 42; \
r1 = 2; \
r0 s%%= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, non-zero reg divisor, check 8")
__success __success_unpriv __retval(1)
__naked void smod64_non_zero_reg_8(void)
{
asm volatile (" \
r0 = 41; \
r1 = 2; \
r0 s%%= r1; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV32, zero divisor")
__success __success_unpriv __retval(0)
__naked void sdiv32_zero_divisor(void)
{
asm volatile (" \
w0 = 42; \
w1 = 0; \
w2 = -1; \
w2 s/= w1; \
w0 = w2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, zero divisor")
__success __success_unpriv __retval(0)
__naked void sdiv64_zero_divisor(void)
{
asm volatile (" \
r0 = 42; \
r1 = 0; \
r2 = -1; \
r2 s/= r1; \
r0 = r2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD32, zero divisor")
__success __success_unpriv __retval(-1)
__naked void smod32_zero_divisor(void)
{
asm volatile (" \
w0 = 42; \
w1 = 0; \
w2 = -1; \
w2 s%%= w1; \
w0 = w2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SMOD64, zero divisor")
__success __success_unpriv __retval(-1)
__naked void smod64_zero_divisor(void)
{
asm volatile (" \
r0 = 42; \
r1 = 0; \
r2 = -1; \
r2 s%%= r1; \
r0 = r2; \
exit; \
" ::: __clobber_all);
}
SEC("socket")
__description("SDIV64, overflow r/r, LLONG_MIN/-1")
__success __retval(1)
__arch_x86_64
__xlated("0: r2 = 0x8000000000000000")
__xlated("2: r3 = -1")
__xlated("3: r4 = r2")
__xlated("4: r11 = r3")
__xlated("5: r11 += 1")
__xlated("6: if r11 > 0x1 goto pc+4")
__xlated("7: if r11 == 0x0 goto pc+1")
__xlated("8: r2 = 0")
__xlated("9: r2 = -r2")
__xlated("10: goto pc+1")
__xlated("11: r2 s/= r3")
__xlated("12: r0 = 0")
__xlated("13: if r2 != r4 goto pc+1")
__xlated("14: r0 = 1")
__xlated("15: exit")
__naked void sdiv64_overflow_rr(void)
{
asm volatile (" \
r2 = %[llong_min] ll; \
r3 = -1; \
r4 = r2; \
r2 s/= r3; \
r0 = 0; \
if r2 != r4 goto +1; \
r0 = 1; \
exit; \
" :
: __imm_const(llong_min, LLONG_MIN)
: __clobber_all);
}
SEC("socket")
__description("SDIV64, r/r, small_val/-1")
__success __retval(-5)
__arch_x86_64
__xlated("0: r2 = 5")
__xlated("1: r3 = -1")
__xlated("2: r11 = r3")
__xlated("3: r11 += 1")
__xlated("4: if r11 > 0x1 goto pc+4")
__xlated("5: if r11 == 0x0 goto pc+1")
__xlated("6: r2 = 0")
__xlated("7: r2 = -r2")
__xlated("8: goto pc+1")
__xlated("9: r2 s/= r3")
__xlated("10: r0 = r2")
__xlated("11: exit")
__naked void sdiv64_rr_divisor_neg_1(void)
{
asm volatile (" \
r2 = 5; \
r3 = -1; \
r2 s/= r3; \
r0 = r2; \
exit; \
" :
:
: __clobber_all);
}
SEC("socket")
__description("SDIV64, overflow r/i, LLONG_MIN/-1")
__success __retval(1)
__arch_x86_64
__xlated("0: r2 = 0x8000000000000000")
__xlated("2: r4 = r2")
__xlated("3: r2 = -r2")
__xlated("4: r0 = 0")
__xlated("5: if r2 != r4 goto pc+1")
__xlated("6: r0 = 1")
__xlated("7: exit")
__naked void sdiv64_overflow_ri(void)
{
asm volatile (" \
r2 = %[llong_min] ll; \
r4 = r2; \
r2 s/= -1; \
r0 = 0; \
if r2 != r4 goto +1; \
r0 = 1; \
exit; \
" :
: __imm_const(llong_min, LLONG_MIN)
: __clobber_all);
}
SEC("socket")
__description("SDIV64, r/i, small_val/-1")
__success __retval(-5)
__arch_x86_64
__xlated("0: r2 = 5")
__xlated("1: r4 = r2")
__xlated("2: r2 = -r2")
__xlated("3: r0 = r2")
__xlated("4: exit")
__naked void sdiv64_ri_divisor_neg_1(void)
{
asm volatile (" \
r2 = 5; \
r4 = r2; \
r2 s/= -1; \
r0 = r2; \
exit; \
" :
:
: __clobber_all);
}
SEC("socket")
__description("SDIV32, overflow r/r, INT_MIN/-1")
__success __retval(1)
__arch_x86_64
__xlated("0: w2 = -2147483648")
__xlated("1: w3 = -1")
__xlated("2: w4 = w2")
__xlated("3: r11 = r3")
__xlated("4: w11 += 1")
__xlated("5: if w11 > 0x1 goto pc+4")
__xlated("6: if w11 == 0x0 goto pc+1")
__xlated("7: w2 = 0")
__xlated("8: w2 = -w2")
__xlated("9: goto pc+1")
__xlated("10: w2 s/= w3")
__xlated("11: r0 = 0")
__xlated("12: if w2 != w4 goto pc+1")
__xlated("13: r0 = 1")
__xlated("14: exit")
__naked void sdiv32_overflow_rr(void)
{
asm volatile (" \
w2 = %[int_min]; \
w3 = -1; \
w4 = w2; \
w2 s/= w3; \
r0 = 0; \
if w2 != w4 goto +1; \
r0 = 1; \
exit; \
" :
: __imm_const(int_min, INT_MIN)
: __clobber_all);
}
SEC("socket")
__description("SDIV32, r/r, small_val/-1")
__success __retval(5)
__arch_x86_64
__xlated("0: w2 = -5")
__xlated("1: w3 = -1")
__xlated("2: w4 = w2")
__xlated("3: r11 = r3")
__xlated("4: w11 += 1")
__xlated("5: if w11 > 0x1 goto pc+4")
__xlated("6: if w11 == 0x0 goto pc+1")
__xlated("7: w2 = 0")
__xlated("8: w2 = -w2")
__xlated("9: goto pc+1")
__xlated("10: w2 s/= w3")
__xlated("11: w0 = w2")
__xlated("12: exit")
__naked void sdiv32_rr_divisor_neg_1(void)
{
asm volatile (" \
w2 = -5; \
w3 = -1; \
w4 = w2; \
w2 s/= w3; \
w0 = w2; \
exit; \
" :
:
: __clobber_all);
}
SEC("socket")
__description("SDIV32, overflow r/i, INT_MIN/-1")
__success __retval(1)
__arch_x86_64
__xlated("0: w2 = -2147483648")
__xlated("1: w4 = w2")
__xlated("2: w2 = -w2")
__xlated("3: r0 = 0")
__xlated("4: if w2 != w4 goto pc+1")
__xlated("5: r0 = 1")
__xlated("6: exit")
__naked void sdiv32_overflow_ri(void)
{
asm volatile (" \
w2 = %[int_min]; \
w4 = w2; \
w2 s/= -1; \
r0 = 0; \
if w2 != w4 goto +1; \
r0 = 1; \
exit; \
" :
: __imm_const(int_min, INT_MIN)
: __clobber_all);
}
SEC("socket")
__description("SDIV32, r/i, small_val/-1")
__success __retval(-5)
__arch_x86_64
__xlated("0: w2 = 5")
__xlated("1: w4 = w2")
__xlated("2: w2 = -w2")
__xlated("3: w0 = w2")
__xlated("4: exit")
__naked void sdiv32_ri_divisor_neg_1(void)
{
asm volatile (" \
w2 = 5; \
w4 = w2; \
w2 s/= -1; \
w0 = w2; \
exit; \
" :
:
: __clobber_all);
}
SEC("socket")
__description("SMOD64, overflow r/r, LLONG_MIN/-1")
__success __retval(0)
__arch_x86_64
__xlated("0: r2 = 0x8000000000000000")
__xlated("2: r3 = -1")
__xlated("3: r4 = r2")
__xlated("4: r11 = r3")
__xlated("5: r11 += 1")
__xlated("6: if r11 > 0x1 goto pc+3")
__xlated("7: if r11 == 0x1 goto pc+3")
__xlated("8: w2 = 0")
__xlated("9: goto pc+1")
__xlated("10: r2 s%= r3")
__xlated("11: r0 = r2")
__xlated("12: exit")
__naked void smod64_overflow_rr(void)
{
asm volatile (" \
r2 = %[llong_min] ll; \
r3 = -1; \
r4 = r2; \
r2 s%%= r3; \
r0 = r2; \
exit; \
" :
: __imm_const(llong_min, LLONG_MIN)
: __clobber_all);
}
SEC("socket")
__description("SMOD64, r/r, small_val/-1")
__success __retval(0)
__arch_x86_64
__xlated("0: r2 = 5")
__xlated("1: r3 = -1")
__xlated("2: r4 = r2")
__xlated("3: r11 = r3")
__xlated("4: r11 += 1")
__xlated("5: if r11 > 0x1 goto pc+3")
__xlated("6: if r11 == 0x1 goto pc+3")
__xlated("7: w2 = 0")
__xlated("8: goto pc+1")
__xlated("9: r2 s%= r3")
__xlated("10: r0 = r2")
__xlated("11: exit")
__naked void smod64_rr_divisor_neg_1(void)
{
asm volatile (" \
r2 = 5; \
r3 = -1; \
r4 = r2; \
r2 s%%= r3; \
r0 = r2; \
exit; \
" :
:
: __clobber_all);
}
SEC("socket")
__description("SMOD64, overflow r/i, LLONG_MIN/-1")
__success __retval(0)
__arch_x86_64
__xlated("0: r2 = 0x8000000000000000")
__xlated("2: r4 = r2")
__xlated("3: w2 = 0")
__xlated("4: r0 = r2")
__xlated("5: exit")
__naked void smod64_overflow_ri(void)
{
asm volatile (" \
r2 = %[llong_min] ll; \
r4 = r2; \
r2 s%%= -1; \
r0 = r2; \
exit; \
" :
: __imm_const(llong_min, LLONG_MIN)
: __clobber_all);
}
SEC("socket")
__description("SMOD64, r/i, small_val/-1")
__success __retval(0)
__arch_x86_64
__xlated("0: r2 = 5")
__xlated("1: r4 = r2")
__xlated("2: w2 = 0")
__xlated("3: r0 = r2")
__xlated("4: exit")
__naked void smod64_ri_divisor_neg_1(void)
{
asm volatile (" \
r2 = 5; \
r4 = r2; \
r2 s%%= -1; \
r0 = r2; \
exit; \
" :
:
: __clobber_all);
}
SEC("socket")
__description("SMOD32, overflow r/r, INT_MIN/-1")
__success __retval(0)
__arch_x86_64
__xlated("0: w2 = -2147483648")
__xlated("1: w3 = -1")
__xlated("2: w4 = w2")
__xlated("3: r11 = r3")
__xlated("4: w11 += 1")
__xlated("5: if w11 > 0x1 goto pc+3")
__xlated("6: if w11 == 0x1 goto pc+4")
__xlated("7: w2 = 0")
__xlated("8: goto pc+1")
__xlated("9: w2 s%= w3")
__xlated("10: goto pc+1")
__xlated("11: w2 = w2")
__xlated("12: r0 = r2")
__xlated("13: exit")
__naked void smod32_overflow_rr(void)
{
asm volatile (" \
w2 = %[int_min]; \
w3 = -1; \
w4 = w2; \
w2 s%%= w3; \
r0 = r2; \
exit; \
" :
: __imm_const(int_min, INT_MIN)
: __clobber_all);
}
SEC("socket")
__description("SMOD32, r/r, small_val/-1")
__success __retval(0)
__arch_x86_64
__xlated("0: w2 = -5")
__xlated("1: w3 = -1")
__xlated("2: w4 = w2")
__xlated("3: r11 = r3")
__xlated("4: w11 += 1")
__xlated("5: if w11 > 0x1 goto pc+3")
__xlated("6: if w11 == 0x1 goto pc+4")
__xlated("7: w2 = 0")
__xlated("8: goto pc+1")
__xlated("9: w2 s%= w3")
__xlated("10: goto pc+1")
__xlated("11: w2 = w2")
__xlated("12: r0 = r2")
__xlated("13: exit")
__naked void smod32_rr_divisor_neg_1(void)
{
asm volatile (" \
w2 = -5; \
w3 = -1; \
w4 = w2; \
w2 s%%= w3; \
r0 = r2; \
exit; \
" :
:
: __clobber_all);
}
SEC("socket")
__description("SMOD32, overflow r/i, INT_MIN/-1")
__success __retval(0)
__arch_x86_64
__xlated("0: w2 = -2147483648")
__xlated("1: w4 = w2")
__xlated("2: w2 = 0")
__xlated("3: r0 = r2")
__xlated("4: exit")
__naked void smod32_overflow_ri(void)
{
asm volatile (" \
w2 = %[int_min]; \
w4 = w2; \
w2 s%%= -1; \
r0 = r2; \
exit; \
" :
: __imm_const(int_min, INT_MIN)
: __clobber_all);
}
SEC("socket")
__description("SMOD32, r/i, small_val/-1")
__success __retval(0)
__arch_x86_64
__xlated("0: w2 = 5")
__xlated("1: w4 = w2")
__xlated("2: w2 = 0")
__xlated("3: w0 = w2")
__xlated("4: exit")
__naked void smod32_ri_divisor_neg_1(void)
{
asm volatile (" \
w2 = 5; \
w4 = w2; \
w2 s%%= -1; \
w0 = w2; \
exit; \
" :
:
: __clobber_all);
}
SEC("socket")
__description("SDIV32, INT_MIN divided by 2, imm")
__success __success_unpriv __retval(-1073741824)
__naked void sdiv32_int_min_div_2_imm(void)
{
asm volatile (" \
w0 = %[int_min]; \
w0 s/= 2; \
exit; \
" :
: __imm_const(int_min, INT_MIN)
: __clobber_all);
}
SEC("socket")
__description("SDIV32, INT_MIN divided by 2, reg")
__success __success_unpriv __retval(-1073741824)
__naked void sdiv32_int_min_div_2_reg(void)
{
asm volatile (" \
w0 = %[int_min]; \
w1 = 2; \
w0 s/= w1; \
exit; \
" :
: __imm_const(int_min, INT_MIN)
: __clobber_all);
}
SEC("socket")
__description("SMOD32, INT_MIN modulo 2, imm")
__success __success_unpriv __retval(0)
__naked void smod32_int_min_mod_2_imm(void)
{
asm volatile (" \
w0 = %[int_min]; \
w0 s%%= 2; \
exit; \
" :
: __imm_const(int_min, INT_MIN)
: __clobber_all);
}
SEC("socket")
__description("SMOD32, INT_MIN modulo -2, imm")
__success __success_unpriv __retval(0)
__naked void smod32_int_min_mod_neg2_imm(void)
{
asm volatile (" \
w0 = %[int_min]; \
w0 s%%= -2; \
exit; \
" :
: __imm_const(int_min, INT_MIN)
: __clobber_all);
}
#else
SEC("socket")
__description("cpuv4 is not supported by compiler or jit, use a dummy test")
__success
int dummy_test(void)
{
return 0;
}
#endif
char _license[] SEC("license") = "GPL";
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