Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\test_overflow.c Create Date:2022-07-28 06:30:49
Last Modify:2022-05-18 10:03:51 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:do_test_u32

Proto:static int __attribute__((__section__(".init.text"))) __attribute__((__cold__))do_test_u32(const struct test_u32 *p)

Type:int

Parameter:

TypeParameterName
const struct test_u32 *p
267  err = 0
267  Do
267  _of = ({
267  __a = a
267  __b = b
267  __d = _r
267  __a == __b
267  __a == __d
267  __builtin_add_overflow(__a, __b, __d)
267  })
267  If _of != s_of Then
267  printk("\0014"KBUILD_MODNAME": expected %u + %u to%s overflow (type %s)\n", a, b, s_of ? "" : " not", "u32")
267  err = 1
267  If _r != sum Then
267  printk("\0014"KBUILD_MODNAME": expected %u + %u == %u, got %u (type %s)\n", a, b, sum, _r, "u32")
267  err = 1
267  When 0 cycle
267  Do
267  _of = ({
267  __a = b
267  __b = a
267  __d = _r
267  __a == __b
267  __a == __d
267  __builtin_add_overflow(__a, __b, __d)
267  })
267  If _of != s_of Then
267  printk("\0014"KBUILD_MODNAME": expected %u + %u to%s overflow (type %s)\n", b, a, s_of ? "" : " not", "u32")
267  err = 1
267  If _r != sum Then
267  printk("\0014"KBUILD_MODNAME": expected %u + %u == %u, got %u (type %s)\n", b, a, sum, _r, "u32")
267  err = 1
267  When 0 cycle
267  Do
267  _of = ({
267  __a = a
267  __b = b
267  __d = _r
267  __a == __b
267  __a == __d
267  __builtin_sub_overflow(__a, __b, __d)
267  })
267  If _of != d_of Then
267  printk("\0014"KBUILD_MODNAME": expected %u - %u to%s overflow (type %s)\n", a, b, d_of ? "" : " not", "u32")
267  err = 1
267  If _r != diff Then
267  printk("\0014"KBUILD_MODNAME": expected %u - %u == %u, got %u (type %s)\n", a, b, diff, _r, "u32")
267  err = 1
267  When 0 cycle
267  Do
267  _of = ({
267  __a = a
267  __b = b
267  __d = _r
267  __a == __b
267  __a == __d
267  __builtin_mul_overflow(__a, __b, __d)
267  })
267  If _of != p_of Then
267  printk("\0014"KBUILD_MODNAME": expected %u * %u to%s overflow (type %s)\n", a, b, p_of ? "" : " not", "u32")
267  err = 1
267  If _r != prod Then
267  printk("\0014"KBUILD_MODNAME": expected %u * %u == %u, got %u (type %s)\n", a, b, prod, _r, "u32")
267  err = 1
267  When 0 cycle
267  Do
267  _of = ({
267  __a = b
267  __b = a
267  __d = _r
267  __a == __b
267  __a == __d
267  __builtin_mul_overflow(__a, __b, __d)
267  })
267  If _of != p_of Then
267  printk("\0014"KBUILD_MODNAME": expected %u * %u to%s overflow (type %s)\n", b, a, p_of ? "" : " not", "u32")
267  err = 1
267  If _r != prod Then
267  printk("\0014"KBUILD_MODNAME": expected %u * %u == %u, got %u (type %s)\n", b, a, prod, _r, "u32")
267  err = 1
267  When 0 cycle
267  Return err
Caller
NameDescribe
test_u32_overflow