5379ef2a60
The basic TM vs syscall test code hard codes an sc instruction for the system call, which fails to cover scv even when the userspace libc has support for it. Duplicate the tests with hard coded scv variants so both are tested when possible. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Fix build on old toolchains by using .long for scv] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210903125707.1601269-2-npiggin@gmail.com
63 lines
754 B
ArmAsm
63 lines
754 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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#include <basic_asm.h>
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#include <asm/unistd.h>
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.text
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FUNC_START(getppid_tm_active)
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tbegin.
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beq 1f
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li r0, __NR_getppid
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sc
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tend.
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blr
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1:
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li r3, -1
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blr
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FUNC_START(getppid_tm_suspended)
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tbegin.
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beq 1f
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li r0, __NR_getppid
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tsuspend.
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sc
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tresume.
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tend.
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blr
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1:
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li r3, -1
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blr
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.macro scv level
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.long (0x44000001 | (\level) << 5)
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.endm
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FUNC_START(getppid_scv_tm_active)
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PUSH_BASIC_STACK(0)
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tbegin.
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beq 1f
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li r0, __NR_getppid
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scv 0
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tend.
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POP_BASIC_STACK(0)
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blr
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1:
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li r3, -1
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POP_BASIC_STACK(0)
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blr
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FUNC_START(getppid_scv_tm_suspended)
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PUSH_BASIC_STACK(0)
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tbegin.
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beq 1f
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li r0, __NR_getppid
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tsuspend.
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scv 0
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tresume.
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tend.
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POP_BASIC_STACK(0)
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blr
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1:
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li r3, -1
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POP_BASIC_STACK(0)
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blr
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