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0209fd511f
Enable cpu v4 tests for RV64, and the relevant tests have passed. Signed-off-by: Pu Lehui <pulehui@huawei.com> Acked-by: Yonghong Song <yonghong.song@linux.dev> Acked-by: Björn Töpel <bjorn@kernel.org> Link: https://lore.kernel.org/r/20230824095001.3408573-8-pulehui@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
133 lines
2.7 KiB
C
133 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \
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(defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64)) && __clang_major__ >= 18
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SEC("socket")
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__description("LDSX, S8")
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__success __success_unpriv __retval(-2)
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__naked void ldsx_s8(void)
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{
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asm volatile (" \
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r1 = 0x3fe; \
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*(u64 *)(r10 - 8) = r1; \
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r0 = *(s8 *)(r10 - 8); \
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exit; \
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" ::: __clobber_all);
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}
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SEC("socket")
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__description("LDSX, S16")
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__success __success_unpriv __retval(-2)
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__naked void ldsx_s16(void)
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{
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asm volatile (" \
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r1 = 0x3fffe; \
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*(u64 *)(r10 - 8) = r1; \
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r0 = *(s16 *)(r10 - 8); \
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exit; \
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" ::: __clobber_all);
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}
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SEC("socket")
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__description("LDSX, S32")
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__success __success_unpriv __retval(-1)
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__naked void ldsx_s32(void)
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{
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asm volatile (" \
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r1 = 0xfffffffe; \
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*(u64 *)(r10 - 8) = r1; \
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r0 = *(s32 *)(r10 - 8); \
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r0 >>= 1; \
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exit; \
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" ::: __clobber_all);
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}
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SEC("socket")
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__description("LDSX, S8 range checking, privileged")
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__log_level(2) __success __retval(1)
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__msg("R1_w=scalar(smin=-128,smax=127)")
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__naked void ldsx_s8_range_priv(void)
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{
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asm volatile (" \
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call %[bpf_get_prandom_u32]; \
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*(u64 *)(r10 - 8) = r0; \
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r1 = *(s8 *)(r10 - 8); \
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/* r1 with s8 range */ \
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if r1 s> 0x7f goto l0_%=; \
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if r1 s< -0x80 goto l0_%=; \
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r0 = 1; \
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l1_%=: \
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exit; \
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l0_%=: \
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r0 = 2; \
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goto l1_%=; \
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" :
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: __imm(bpf_get_prandom_u32)
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: __clobber_all);
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}
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SEC("socket")
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__description("LDSX, S16 range checking")
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__success __success_unpriv __retval(1)
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__naked void ldsx_s16_range(void)
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{
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asm volatile (" \
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call %[bpf_get_prandom_u32]; \
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*(u64 *)(r10 - 8) = r0; \
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r1 = *(s16 *)(r10 - 8); \
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/* r1 with s16 range */ \
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if r1 s> 0x7fff goto l0_%=; \
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if r1 s< -0x8000 goto l0_%=; \
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r0 = 1; \
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l1_%=: \
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exit; \
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l0_%=: \
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r0 = 2; \
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goto l1_%=; \
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" :
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: __imm(bpf_get_prandom_u32)
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: __clobber_all);
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}
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SEC("socket")
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__description("LDSX, S32 range checking")
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__success __success_unpriv __retval(1)
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__naked void ldsx_s32_range(void)
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{
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asm volatile (" \
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call %[bpf_get_prandom_u32]; \
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*(u64 *)(r10 - 8) = r0; \
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r1 = *(s32 *)(r10 - 8); \
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/* r1 with s16 range */ \
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if r1 s> 0x7fffFFFF goto l0_%=; \
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if r1 s< -0x80000000 goto l0_%=; \
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r0 = 1; \
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l1_%=: \
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exit; \
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l0_%=: \
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r0 = 2; \
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goto l1_%=; \
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" :
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: __imm(bpf_get_prandom_u32)
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: __clobber_all);
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}
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#else
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SEC("socket")
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__description("cpuv4 is not supported by compiler or jit, use a dummy test")
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__success
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int dummy_test(void)
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{
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return 0;
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}
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#endif
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char _license[] SEC("license") = "GPL";
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