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i#3544 RV64: Implemented dynamorio-clone #6063

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merged 7 commits into from
May 20, 2023
Merged

i#3544 RV64: Implemented dynamorio-clone #6063

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b3f1321
i#3544 RV64: Implemented dynamorio-clone
shiptux May 18, 2023
5a507d5
Add comments and restore the stack
shiptux May 18, 2023
90aff13
Fix comment
shiptux May 18, 2023
f26feb3
Fixed the alignment
shiptux May 18, 2023
985e221
Fix comment
shiptux May 19, 2023
63ded0e
Fix review
shiptux May 19, 2023
982aca9
Fix review
shiptux May 19, 2023
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23 changes: 16 additions & 7 deletions core/arch/riscv64/riscv64.asm
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Original file line number Diff line number Diff line change
Expand Up @@ -264,23 +264,32 @@ GLOBAL_LABEL(_dynamorio_runtime_resolve:)
*/
DECLARE_FUNC(dynamorio_clone)
GLOBAL_LABEL(dynamorio_clone:)
/* FIXME i#3544: Not implemented */
addi ARG2, ARG2, -16 /* Description: newsp = newsp - 16. */
sd ARG6, 0 (ARG2) /* The func is now on TOS of newsp. */
li SYSNUM_REG, SYS_clone /* All args are already in syscall registers.*/
ecall
bnez ARG1, dynamorio_clone_parent
ld ARG1, 0 (sp)
addi sp, sp, 16
jalr ARG1
jal GLOBAL_REF(unexpected_return)
dynamorio_clone_parent:
ret
END_FUNC(dynamorio_clone)

DECLARE_FUNC(dynamorio_sigreturn)
GLOBAL_LABEL(dynamorio_sigreturn:)
li SYSNUM_REG, SYS_rt_sigreturn
li SYSNUM_REG, SYS_rt_sigreturn
ecall
jal GLOBAL_REF(unexpected_return)
jal GLOBAL_REF(unexpected_return)
END_FUNC(dynamorio_sigreturn)

DECLARE_FUNC(dynamorio_sys_exit)
GLOBAL_LABEL(dynamorio_sys_exit:)
li a0, 0 /* exit code */
li SYSNUM_REG, SYS_exit /* SYS_exit number */
li a0, 0 /* exit code */
li SYSNUM_REG, SYS_exit
ecall
jal GLOBAL_REF(unexpected_return)
jal GLOBAL_REF(unexpected_return)
END_FUNC(dynamorio_sys_exit)

# ifndef NOT_DYNAMORIO_CORE_PROPER
Expand All @@ -290,7 +299,7 @@ GLOBAL_LABEL(dynamorio_sys_exit:)
# endif
DECLARE_FUNC(main_signal_handler)
GLOBAL_LABEL(main_signal_handler:)
mv ARG4, sp /* pass as extra arg */
mv ARG4, sp /* pass as extra arg */
j GLOBAL_REF(main_signal_handler_C) /* chain call */
END_FUNC(main_signal_handler)

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