forked from Github_Repos/cvw
added a whole bunch of interseting test code for branches which does not work.
This commit is contained in:
Ross Thompson
parent
6a050219d4
commit
5edc90b1c2
23
testsBP/crt0/Makefile
Normal file
23
testsBP/crt0/Makefile
Normal file
@ -0,0 +1,23 @@
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TARGETDIR := bin
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TARGET := $(TARGETDIR)/start
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ROOT := ..
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LIBRARY_DIRS :=
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LIBRARY_FILES :=
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LINK_FLAGS := -nostartfiles
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AFLAGS =-march=rv64ifd -W
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CFLAGS =-march=rv64ifd -mcmodel=medany
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AS=riscv64-unknown-elf-as
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CC=riscv64-unknown-elf-gcc
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AR=riscv64-unknown-elf-ar
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all: libcrt0.a
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%.o: %.s
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${AS} ${AFLAGS} -c $< -o $@
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libcrt0.a: start.o
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${AR} -r $@ $^
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clean:
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rm -rf *.a *.o
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213
testsBP/crt0/isr.s
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213
testsBP/crt0/isr.s
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.section .text
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.global __trap_handler
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.type __trap_handler, @function
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__trap_handler:
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# save the context of the cpu to the top of the current stack
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addi sp, sp, -124
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sw x1, 0x0(sp)
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sw x2, 0x4(sp)
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sw x3, 0x8(sp)
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sw x4, 0xC(sp)
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sw x5, 0x10(sp)
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sw x6, 0x14(sp)
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sw x7, 0x18(sp)
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sw x8, 0x1C(sp)
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sw x9, 0x20(sp)
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sw x10, 0x24(sp)
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sw x11, 0x28(sp)
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sw x12, 0x2C(sp)
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sw x13, 0x30(sp)
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sw x14, 0x34(sp)
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sw x15, 0x38(sp)
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sw x16, 0x3C(sp)
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sw x17, 0x40(sp)
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sw x18, 0x44(sp)
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sw x19, 0x48(sp)
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sw x20, 0x4C(sp)
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sw x21, 0x50(sp)
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sw x22, 0x54(sp)
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sw x23, 0x58(sp)
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sw x24, 0x5C(sp)
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sw x25, 0x60(sp)
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sw x26, 0x64(sp)
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sw x27, 0x68(sp)
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sw x28, 0x6C(sp)
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sw x29, 0x70(sp)
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sw x30, 0x74(sp)
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sw x31, 0x78(sp)
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# figure out what caused the trap.
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csrrw t0, mcause, x0
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# mcause is {int, 31 bit exception code}
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# for this implementation only the lowest 4 bits are used
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srli t1, t0, 31 # interrupt flag
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andi t2, t0, 0xF # 4 bit cause
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slli t1, t1, 5 # shift int flag
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or t1, t1, t2 # combine
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slli t1, t1, 2 # multiply by 4
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la t3, exception_table
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add t4, t3, t1
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lw t5, 0(t4)
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jr t5, 0 # jump to specific ISR
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# specific ISR is expected to set epc
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restore_st:
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# restore register from stack on exit.
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lw x1, 0x0(sp)
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lw x2, 0x4(sp)
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lw x3, 0x8(sp)
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lw x4, 0xC(sp)
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lw x5, 0x10(sp)
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lw x6, 0x14(sp)
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lw x7, 0x18(sp)
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lw x8, 0x1C(sp)
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lw x9, 0x20(sp)
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lw x10, 0x24(sp)
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lw x11, 0x28(sp)
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lw x12, 0x2C(sp)
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lw x13, 0x30(sp)
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lw x14, 0x34(sp)
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lw x15, 0x38(sp)
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lw x16, 0x3C(sp)
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lw x17, 0x40(sp)
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lw x18, 0x44(sp)
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lw x19, 0x48(sp)
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lw x20, 0x4C(sp)
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lw x21, 0x50(sp)
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lw x22, 0x54(sp)
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lw x23, 0x58(sp)
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lw x24, 0x5C(sp)
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lw x25, 0x60(sp)
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lw x26, 0x64(sp)
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lw x27, 0x68(sp)
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lw x28, 0x6C(sp)
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lw x29, 0x70(sp)
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lw x30, 0x74(sp)
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lw x31, 0x78(sp)
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addi sp, sp, 124
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mret
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.section .text
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.type trap_instr_addr_misalign, @function
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trap_instr_addr_misalign:
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# fatal error, report error and halt
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addi sp, sp, 4
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sw ra, 0(sp)
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jal fail
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lw ra, 0(sp)
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la t0, restore_st
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jr t0, 0
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.section .text
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.type trap_m_ecall, @function
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trap_m_ecall:
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addi sp, sp, -4
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sw ra, 0(sp)
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# select which system call based on a7.
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# for this example we will just define the following.
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# not standard with linux or anything.
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# 0: execute a call back function
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# 1: decrease privilege by 1 (m=>s, s=>u, u=>u)
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# 2: increase privilege by 1 (m=>m, s=>m, u=>s)
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# check a7
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li t0, 1
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beq a7, t0, trap_m_decrease_privilege
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li t0, 2
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beq a7, t0, trap_m_increase_privilege
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# call call back function if not zero
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la t1, isr_m_ecall_cb_fp
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lw t0, 0(t1)
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beq t0, x0, trap_m_ecall_skip_cb
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jalr ra, t0, 0
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trap_m_ecall_skip_cb:
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# modify the mepc
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csrrw t0, mepc, x0
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addi t0, t0, 4
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csrrw x0, mepc, t0
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lw ra, 0(sp)
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addi sp, sp, 4
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la t0, restore_st
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jr t0, 0
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trap_m_decrease_privilege:
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# read the mstatus register
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csrrw t0, mstatus, x0
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# 11 => 01, and 01 => 00.
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# this is accomplished by clearing bit 12 and taking the old
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# bit 12 as the new bit 11.
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li t3, 0x00001800
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and t1, t0, t3 # isolates the bits 12 and 11.
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# shift right by 1.
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srli t2, t1, 1
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and t2, t2, t3 # this will clear bit 10.
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li t3, ~0x00001800
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and t4, t0, t3
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or t0, t2, t4
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csrrw x0, mstatus, t0
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j trap_m_ecall_skip_cb
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trap_m_increase_privilege:
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# read the mstatus register
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csrrw t0, mstatus, x0
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# 11 => 01, and 01 => 00.
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# this is accomplished by setting bit 11 and taking the old
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# bit 11 as the new bit 12.
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li t3, 0x00000800
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li t4, ~0x00000800
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and t1, t0, t3
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slli t2, t1, 1 # shift left by 1.
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or t2, t2, t3 # bit 11 is always set.
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and t1, t0, t5
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or t0, t1, t2
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csrrw x0, mstatus, t0
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j trap_m_ecall_skip_cb
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.data
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exception_table:
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.int trap_instr_addr_misalign
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.int trap_instr_addr_misalign #trap_instr_access_fault
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.int trap_instr_addr_misalign #trap_illegal_instr
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.int trap_instr_addr_misalign #trap_breakpoint
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.int trap_instr_addr_misalign #trap_load_addr_misalign
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.int trap_instr_addr_misalign #trap_load_access_fault
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.int trap_instr_addr_misalign #trap_store_addr_misalign
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.int trap_instr_addr_misalign #trap_store_access_fault
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.int trap_m_ecall
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.int trap_m_ecall
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.int restore_st
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.int trap_m_ecall
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.int trap_instr_addr_misalign #trap_instr_page_fault
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.int trap_instr_addr_misalign #trap_load_page_fault
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.int restore_st
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.int trap_instr_addr_misalign #trap_store_page_fault
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#.data
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#interrupt_table:
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.int trap_instr_addr_misalign #trap_u_software
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.int trap_instr_addr_misalign #trap_s_software
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.int restore_st
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.int trap_instr_addr_misalign #trap_m_software
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.int trap_instr_addr_misalign #trap_u_timer
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.int trap_instr_addr_misalign #trap_s_timer
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.int restore_st
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.int trap_instr_addr_misalign #trap_m_timer
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.int trap_instr_addr_misalign #trap_u_external
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.int trap_instr_addr_misalign #trap_s_external
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.int restore_st
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.int trap_instr_addr_misalign #trap_m_external
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.int restore_st
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.int restore_st
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.int restore_st
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.int restore_st
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.section .data
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.global isr_m_ecall_cb_fp
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isr_m_ecall_cb_fp:
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.int 0
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60
testsBP/crt0/start.s
Normal file
60
testsBP/crt0/start.s
Normal file
@ -0,0 +1,60 @@
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.section .init
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.global _start
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.type _start, @function
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_start:
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# Initialize global pointer
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.option push
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.option norelax
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1:auipc gp, %pcrel_hi(__global_pointer$)
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addi gp, gp, %pcrel_lo(1b)
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.option pop
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li x1, 0
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li x2, 0
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li x4, 0
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li x5, 0
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li x6, 0
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li x7, 0
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li x8, 0
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li x9, 0
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li x10, 0
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li x11, 0
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li x12, 0
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li x13, 0
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li x14, 0
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li x15, 0
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li x16, 0
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li x17, 0
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li x18, 0
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li x19, 0
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li x20, 0
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li x21, 0
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li x22, 0
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li x23, 0
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li x24, 0
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li x25, 0
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li x26, 0
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li x27, 0
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li x28, 0
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li x29, 0
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li x30, 0
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li x31, 0
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# set the stack pointer to the top of memory
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# 0x8000_0000 + 64K - 8 bytes
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li sp, 0x0000FFF8
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jal ra, main
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jal ra, _halt
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.section .text
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.global _halt
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.type _halt, @function
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_halt:
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li gp, 1
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li a0, 0
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ecall
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j _halt
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244
testsBP/linker.x
Normal file
244
testsBP/linker.x
Normal file
@ -0,0 +1,244 @@
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|
OUTPUT_FORMAT("elf64-littleriscv", "elf64-littleriscv",
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|
"elf64-littleriscv")
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|
OUTPUT_ARCH(riscv)
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|
ENTRY(_start)
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SEARCH_DIR("/opt/riscv/riscv64-unknown-elf/lib");
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|
SECTIONS
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|
{
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|
/* Read-only sections, merged into text segment: */
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|
/* init segment to ensure we get a consistent start routine*/
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|
. = 0x0000000000000000;
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. = ALIGN(0x0);
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|
.init : {
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|
*(.init)
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|
}
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|
_start_end = .;
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|
PROVIDE (__executable_start = SEGMENT_START("text-segment", 0x0)); . = SEGMENT_START("text-segment", _start_end);
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|
.interp : { *(.interp) }
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|
.note.gnu.build-id : { *(.note.gnu.build-id) }
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.hash : { *(.hash) }
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|
.gnu.hash : { *(.gnu.hash) }
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|
.dynsym : { *(.dynsym) }
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|
.dynstr : { *(.dynstr) }
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|
.gnu.version : { *(.gnu.version) }
|
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|
.gnu.version_d : { *(.gnu.version_d) }
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|
.gnu.version_r : { *(.gnu.version_r) }
|
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|
.rela.dyn :
|
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|
{
|
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|
*(.rela.init)
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|
*(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)
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|
*(.rela.fini)
|
||||||
|
*(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*)
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||||||
|
*(.rela.data .rela.data.* .rela.gnu.linkonce.d.*)
|
||||||
|
*(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)
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|
*(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*)
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|
*(.rela.ctors)
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|
*(.rela.dtors)
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|
*(.rela.got)
|
||||||
|
*(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*)
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|
*(.rela.sbss .rela.sbss.* .rela.gnu.linkonce.sb.*)
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|
*(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*)
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|
*(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*)
|
||||||
|
*(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)
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|
PROVIDE_HIDDEN (__rela_iplt_start = .);
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||||||
|
*(.rela.iplt)
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|
PROVIDE_HIDDEN (__rela_iplt_end = .);
|
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|
}
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|
.rela.plt :
|
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|
{
|
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|
*(.rela.plt)
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|
}
|
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|
.init :
|
||||||
|
{
|
||||||
|
KEEP (*(SORT_NONE(.init)))
|
||||||
|
}
|
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|
.plt : { *(.plt) }
|
||||||
|
.iplt : { *(.iplt) }
|
||||||
|
.text :
|
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|
{
|
||||||
|
*(.text.unlikely .text.*_unlikely .text.unlikely.*)
|
||||||
|
*(.text.exit .text.exit.*)
|
||||||
|
*(.text.startup .text.startup.*)
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|
*(.text.hot .text.hot.*)
|
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|
*(.text .stub .text.* .gnu.linkonce.t.*)
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|
/* .gnu.warning sections are handled specially by elf64.em. */
|
||||||
|
*(.gnu.warning)
|
||||||
|
}
|
||||||
|
.fini :
|
||||||
|
{
|
||||||
|
KEEP (*(SORT_NONE(.fini)))
|
||||||
|
}
|
||||||
|
PROVIDE (__etext = .);
|
||||||
|
PROVIDE (_etext = .);
|
||||||
|
PROVIDE (etext = .);
|
||||||
|
.rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
|
||||||
|
.rodata1 : { *(.rodata1) }
|
||||||
|
.sdata2 :
|
||||||
|
{
|
||||||
|
*(.sdata2 .sdata2.* .gnu.linkonce.s2.*)
|
||||||
|
}
|
||||||
|
.sbss2 : { *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*) }
|
||||||
|
.eh_frame_hdr : { *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) }
|
||||||
|
.eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) *(.eh_frame.*) }
|
||||||
|
.gcc_except_table : ONLY_IF_RO { *(.gcc_except_table .gcc_except_table.*) }
|
||||||
|
.gnu_extab : ONLY_IF_RO { *(.gnu_extab*) }
|
||||||
|
/* These sections are generated by the Sun/Oracle C++ compiler. */
|
||||||
|
.exception_ranges : ONLY_IF_RO { *(.exception_ranges*) }
|
||||||
|
/* Adjust the address for the data segment. We want to adjust up to
|
||||||
|
the same address within the page on the next page up. */
|
||||||
|
. = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE));
|
||||||
|
/* Exception handling */
|
||||||
|
.eh_frame : ONLY_IF_RW { KEEP (*(.eh_frame)) *(.eh_frame.*) }
|
||||||
|
.gnu_extab : ONLY_IF_RW { *(.gnu_extab) }
|
||||||
|
.gcc_except_table : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) }
|
||||||
|
.exception_ranges : ONLY_IF_RW { *(.exception_ranges*) }
|
||||||
|
/* Thread Local Storage sections */
|
||||||
|
.tdata :
|
||||||
|
{
|
||||||
|
PROVIDE_HIDDEN (__tdata_start = .);
|
||||||
|
*(.tdata .tdata.* .gnu.linkonce.td.*)
|
||||||
|
}
|
||||||
|
.tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
|
||||||
|
.preinit_array :
|
||||||
|
{
|
||||||
|
PROVIDE_HIDDEN (__preinit_array_start = .);
|
||||||
|
KEEP (*(.preinit_array))
|
||||||
|
PROVIDE_HIDDEN (__preinit_array_end = .);
|
||||||
|
}
|
||||||
|
.init_array :
|
||||||
|
{
|
||||||
|
PROVIDE_HIDDEN (__init_array_start = .);
|
||||||
|
KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
|
||||||
|
KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
|
||||||
|
PROVIDE_HIDDEN (__init_array_end = .);
|
||||||
|
}
|
||||||
|
.fini_array :
|
||||||
|
{
|
||||||
|
PROVIDE_HIDDEN (__fini_array_start = .);
|
||||||
|
KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
|
||||||
|
KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
|
||||||
|
PROVIDE_HIDDEN (__fini_array_end = .);
|
||||||
|
}
|
||||||
|
.ctors :
|
||||||
|
{
|
||||||
|
/* gcc uses crtbegin.o to find the start of
|
||||||
|
the constructors, so we make sure it is
|
||||||
|
first. Because this is a wildcard, it
|
||||||
|
doesn't matter if the user does not
|
||||||
|
actually link against crtbegin.o; the
|
||||||
|
linker won't look for a file to match a
|
||||||
|
wildcard. The wildcard also means that it
|
||||||
|
doesn't matter which directory crtbegin.o
|
||||||
|
is in. */
|
||||||
|
KEEP (*crtbegin.o(.ctors))
|
||||||
|
KEEP (*crtbegin?.o(.ctors))
|
||||||
|
/* We don't want to include the .ctor section from
|
||||||
|
the crtend.o file until after the sorted ctors.
|
||||||
|
The .ctor section from the crtend file contains the
|
||||||
|
end of ctors marker and it must be last */
|
||||||
|
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
|
||||||
|
KEEP (*(SORT(.ctors.*)))
|
||||||
|
KEEP (*(.ctors))
|
||||||
|
}
|
||||||
|
.dtors :
|
||||||
|
{
|
||||||
|
KEEP (*crtbegin.o(.dtors))
|
||||||
|
KEEP (*crtbegin?.o(.dtors))
|
||||||
|
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
|
||||||
|
KEEP (*(SORT(.dtors.*)))
|
||||||
|
KEEP (*(.dtors))
|
||||||
|
}
|
||||||
|
.jcr : { KEEP (*(.jcr)) }
|
||||||
|
.data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro .data.rel.ro.* .gnu.linkonce.d.rel.ro.*) }
|
||||||
|
.dynamic : { *(.dynamic) }
|
||||||
|
. = DATA_SEGMENT_RELRO_END (0, .);
|
||||||
|
.data :
|
||||||
|
{
|
||||||
|
__DATA_BEGIN__ = .;
|
||||||
|
*(.data .data.* .gnu.linkonce.d.*)
|
||||||
|
SORT(CONSTRUCTORS)
|
||||||
|
}
|
||||||
|
.data1 : { *(.data1) }
|
||||||
|
.got : { *(.got.plt) *(.igot.plt) *(.got) *(.igot) }
|
||||||
|
/* We want the small data sections together, so single-instruction offsets
|
||||||
|
can access them all, and initialized data all before uninitialized, so
|
||||||
|
we can shorten the on-disk segment size. */
|
||||||
|
.sdata :
|
||||||
|
{
|
||||||
|
__SDATA_BEGIN__ = .;
|
||||||
|
*(.srodata.cst16) *(.srodata.cst8) *(.srodata.cst4) *(.srodata.cst2) *(.srodata .srodata.*)
|
||||||
|
*(.sdata .sdata.* .gnu.linkonce.s.*)
|
||||||
|
}
|
||||||
|
_edata = .; PROVIDE (edata = .);
|
||||||
|
. = .;
|
||||||
|
__bss_start = .;
|
||||||
|
.sbss :
|
||||||
|
{
|
||||||
|
*(.dynsbss)
|
||||||
|
*(.sbss .sbss.* .gnu.linkonce.sb.*)
|
||||||
|
*(.scommon)
|
||||||
|
}
|
||||||
|
.bss :
|
||||||
|
{
|
||||||
|
*(.dynbss)
|
||||||
|
*(.bss .bss.* .gnu.linkonce.b.*)
|
||||||
|
*(COMMON)
|
||||||
|
/* Align here to ensure that the .bss section occupies space up to
|
||||||
|
_end. Align after .bss to ensure correct alignment even if the
|
||||||
|
.bss section disappears because there are no input sections.
|
||||||
|
FIXME: Why do we need it? When there is no .bss section, we do not
|
||||||
|
pad the .data section. */
|
||||||
|
. = ALIGN(. != 0 ? 64 / 8 : 1);
|
||||||
|
}
|
||||||
|
. = ALIGN(64 / 8);
|
||||||
|
. = SEGMENT_START("ldata-segment", .);
|
||||||
|
. = ALIGN(64 / 8);
|
||||||
|
__BSS_END__ = .;
|
||||||
|
__global_pointer$ = MIN(__SDATA_BEGIN__ + 0x800,
|
||||||
|
MAX(__DATA_BEGIN__ + 0x800, __BSS_END__ - 0x800));
|
||||||
|
_end = .; PROVIDE (end = .);
|
||||||
|
. = DATA_SEGMENT_END (.);
|
||||||
|
/* Stabs debugging sections. */
|
||||||
|
.stab 0 : { *(.stab) }
|
||||||
|
.stabstr 0 : { *(.stabstr) }
|
||||||
|
.stab.excl 0 : { *(.stab.excl) }
|
||||||
|
.stab.exclstr 0 : { *(.stab.exclstr) }
|
||||||
|
.stab.index 0 : { *(.stab.index) }
|
||||||
|
.stab.indexstr 0 : { *(.stab.indexstr) }
|
||||||
|
.comment 0 : { *(.comment) }
|
||||||
|
.gnu.build.attributes : { *(.gnu.build.attributes .gnu.build.attributes.*) }
|
||||||
|
/* DWARF debug sections.
|
||||||
|
Symbols in the DWARF debugging sections are relative to the beginning
|
||||||
|
of the section so we begin them at 0. */
|
||||||
|
/* DWARF 1 */
|
||||||
|
.debug 0 : { *(.debug) }
|
||||||
|
.line 0 : { *(.line) }
|
||||||
|
/* GNU DWARF 1 extensions */
|
||||||
|
.debug_srcinfo 0 : { *(.debug_srcinfo) }
|
||||||
|
.debug_sfnames 0 : { *(.debug_sfnames) }
|
||||||
|
/* DWARF 1.1 and DWARF 2 */
|
||||||
|
.debug_aranges 0 : { *(.debug_aranges) }
|
||||||
|
.debug_pubnames 0 : { *(.debug_pubnames) }
|
||||||
|
/* DWARF 2 */
|
||||||
|
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
|
||||||
|
.debug_abbrev 0 : { *(.debug_abbrev) }
|
||||||
|
.debug_line 0 : { *(.debug_line .debug_line.* .debug_line_end) }
|
||||||
|
.debug_frame 0 : { *(.debug_frame) }
|
||||||
|
.debug_str 0 : { *(.debug_str) }
|
||||||
|
.debug_loc 0 : { *(.debug_loc) }
|
||||||
|
.debug_macinfo 0 : { *(.debug_macinfo) }
|
||||||
|
/* SGI/MIPS DWARF 2 extensions */
|
||||||
|
.debug_weaknames 0 : { *(.debug_weaknames) }
|
||||||
|
.debug_funcnames 0 : { *(.debug_funcnames) }
|
||||||
|
.debug_typenames 0 : { *(.debug_typenames) }
|
||||||
|
.debug_varnames 0 : { *(.debug_varnames) }
|
||||||
|
/* DWARF 3 */
|
||||||
|
.debug_pubtypes 0 : { *(.debug_pubtypes) }
|
||||||
|
.debug_ranges 0 : { *(.debug_ranges) }
|
||||||
|
/* DWARF Extension. */
|
||||||
|
.debug_macro 0 : { *(.debug_macro) }
|
||||||
|
.debug_addr 0 : { *(.debug_addr) }
|
||||||
|
.gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
|
||||||
|
/DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) }
|
||||||
|
}
|
||||||
92
testsBP/makefile.inc
Normal file
92
testsBP/makefile.inc
Normal file
@ -0,0 +1,92 @@
|
|||||||
|
CEXT := c
|
||||||
|
CPPEXT := cpp
|
||||||
|
AEXT := s
|
||||||
|
SEXT := S
|
||||||
|
SRCEXT := \([$(CEXT)$(AEXT)$(SEXT)]\|$(CPPEXT)\)
|
||||||
|
OBJEXT := o
|
||||||
|
DEPEXT := d
|
||||||
|
SRCDIR := .
|
||||||
|
BUILDDIR := OBJ
|
||||||
|
LINKER := ${ROOT}/linker.x
|
||||||
|
|
||||||
|
SOURCES ?= $(shell find $(SRCDIR) -type f -regex ".*\.$(SRCEXT)" | sort)
|
||||||
|
OBJECTS := $(SOURCES:.$(CEXT)=.$(OBJEXT))
|
||||||
|
OBJECTS := $(OBJECTS:.$(AEXT)=.$(OBJEXT))
|
||||||
|
OBJECTS := $(OBJECTS:.$(SEXT)=.$(OBJEXT))
|
||||||
|
OBJECTS := $(OBJECTS:.$(CPPEXT)=.$(OBJEXT))
|
||||||
|
OBJECTS := $(patsubst $(SRCDIR)/%,$(BUILDDIR)/%,$(OBJECTS))
|
||||||
|
|
||||||
|
#Default Make
|
||||||
|
all: directories $(TARGET).memfile
|
||||||
|
|
||||||
|
#Remake
|
||||||
|
remake: clean all
|
||||||
|
|
||||||
|
#Make the Directories
|
||||||
|
directories:
|
||||||
|
@mkdir -p $(TARGETDIR)
|
||||||
|
@mkdir -p $(BUILDDIR)
|
||||||
|
|
||||||
|
clean:
|
||||||
|
rm -rf $(BUILDDIR) $(TARGETDIR) *.memfile *.objdump
|
||||||
|
|
||||||
|
|
||||||
|
#Needed for building additional library projects
|
||||||
|
ifdef LIBRARY_DIRS
|
||||||
|
LIBS+=${LIBRARY_DIRS:%=-L%} ${LIBRARY_FILES:%=-l%}
|
||||||
|
INC+=${LIBRARY_DIRS:%=-I%}
|
||||||
|
|
||||||
|
${LIBRARY_DIRS}:
|
||||||
|
make -C $@ -j 1
|
||||||
|
|
||||||
|
.PHONY: $(LIBRARY_DIRS) $(TARGET)
|
||||||
|
endif
|
||||||
|
|
||||||
|
|
||||||
|
#Pull in dependency info for *existing* .o files
|
||||||
|
-include $(OBJECTS:.$(OBJEXT)=.$(DEPEXT))
|
||||||
|
|
||||||
|
#Link
|
||||||
|
$(TARGET): $(OBJECTS) $(LIBRARY_DIRS)
|
||||||
|
$(CC) $(LINK_FLAGS) -g -o $(TARGET) $(OBJECTS) ${LIBS} -T ${LINKER}
|
||||||
|
|
||||||
|
|
||||||
|
#Compile
|
||||||
|
$(BUILDDIR)/%.$(OBJEXT): $(SRCDIR)/%.$(CEXT)
|
||||||
|
@mkdir -p $(dir $@)
|
||||||
|
$(CC) $(CFLAGS) $(INC) -c -o $@ $< > $(BUILDDIR)/$*.list
|
||||||
|
@$(CC) $(CFLAGS) $(INC) -MM $(SRCDIR)/$*.$(CEXT) > $(BUILDDIR)/$*.$(DEPEXT)
|
||||||
|
@cp -f $(BUILDDIR)/$*.$(DEPEXT) $(BUILDDIR)/$*.$(DEPEXT).tmp
|
||||||
|
@sed -e 's|.*:|$(BUILDDIR)/$*.$(OBJEXT):|' < $(BUILDDIR)/$*.$(DEPEXT).tmp > $(BUILDDIR)/$*.$(DEPEXT)
|
||||||
|
@sed -e 's/.*://' -e 's/\\$$//' < $(BUILDDIR)/$*.$(DEPEXT).tmp | fmt -1 | sed -e 's/^ *//' -e 's/$$/:/' >> $(BUILDDIR)/$*.$(DEPEXT)
|
||||||
|
@rm -f $(BUILDDIR)/$*.$(DEPEXT).tmp
|
||||||
|
|
||||||
|
# gcc won't output dependencies for assembly files for some reason
|
||||||
|
# most asm files don't have dependencies so the echo will work for now.
|
||||||
|
$(BUILDDIR)/%.$(OBJEXT): $(SRCDIR)/%.$(AEXT)
|
||||||
|
@mkdir -p $(dir $@)
|
||||||
|
$(CC) $(CFLAGS) -c -o $@ $< > $(BUILDDIR)/$*.list
|
||||||
|
@echo $@: $< > $(BUILDDIR)/$*.$(DEPEXT)
|
||||||
|
|
||||||
|
$(BUILDDIR)/%.$(OBJEXT): $(SRCDIR)/%.$(SEXT)
|
||||||
|
@mkdir -p $(dir $@)
|
||||||
|
$(CC) $(CFLAGS) $(INC) -c -o $@ $< > $(BUILDDIR)/$*.list
|
||||||
|
@echo $@: $< > $(BUILDDIR)/$*.$(DEPEXT)
|
||||||
|
|
||||||
|
# C++
|
||||||
|
$(BUILDDIR)/%.$(OBJEXT): $(SRCDIR)/%.$(CPPEXT)
|
||||||
|
@mkdir -p $(dir $@)
|
||||||
|
$(CC) $(CFLAGS) $(INC) -c -o $@ $< > $(BUILDDIR)/$*.list
|
||||||
|
@$(CC) $(CFLAGS) $(INC) -MM $(SRCDIR)/$*.$(CPPEXT) > $(BUILDDIR)/$*.$(DEPEXT)
|
||||||
|
@cp -f $(BUILDDIR)/$*.$(DEPEXT) $(BUILDDIR)/$*.$(DEPEXT).tmp
|
||||||
|
@sed -e 's|.*:|$(BUILDDIR)/$*.$(OBJEXT):|' < $(BUILDDIR)/$*.$(DEPEXT).tmp > $(BUILDDIR)/$*.$(DEPEXT)
|
||||||
|
@sed -e 's/.*://' -e 's/\\$$//' < $(BUILDDIR)/$*.$(DEPEXT).tmp | fmt -1 | sed -e 's/^ *//' -e 's/$$/:/' >> $(BUILDDIR)/$*.$(DEPEXT)
|
||||||
|
@rm -f $(BUILDDIR)/$*.$(DEPEXT).tmp
|
||||||
|
|
||||||
|
# convert to hex
|
||||||
|
$(TARGET).memfile: $(TARGET)
|
||||||
|
@echo 'Making object dump file.'
|
||||||
|
@riscv64-unknown-elf-objdump -D $< > $<.objdump
|
||||||
|
@echo 'Making memory file'
|
||||||
|
exe2memfile0.pl $<
|
||||||
|
extractFunctionRadix.sh $<.objdump
|
||||||
15
testsBP/sieve/Makefile
Normal file
15
testsBP/sieve/Makefile
Normal file
@ -0,0 +1,15 @@
|
|||||||
|
TARGETDIR := sieve
|
||||||
|
TARGET := $(TARGETDIR)/$(TARGETDIR).elf
|
||||||
|
ROOT := ..
|
||||||
|
LIBRARY_DIRS := ${ROOT}/crt0
|
||||||
|
LIBRARY_FILES := crt0
|
||||||
|
LINK_FLAGS := -nostartfiles -Wl,-Map=$(TARGET).map
|
||||||
|
|
||||||
|
CFLAGS =-march=rv64ifd -Wa,-alhs -Wa,-L -mcmodel=medany -mstrict-align
|
||||||
|
CC=riscv64-unknown-elf-gcc
|
||||||
|
DA=riscv64-unknown-elf-objdump -d
|
||||||
|
|
||||||
|
|
||||||
|
include $(ROOT)/makefile.inc
|
||||||
|
|
||||||
|
|
||||||
101
testsBP/sieve/sieve.c
Normal file
101
testsBP/sieve/sieve.c
Normal file
@ -0,0 +1,101 @@
|
|||||||
|
/*
|
||||||
|
* Filename:
|
||||||
|
*
|
||||||
|
* sieve.c
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
*
|
||||||
|
* The Sieve of Eratosthenes benchmark, from Byte Magazine
|
||||||
|
* early 1980s, when a PC would do well to run this in 10
|
||||||
|
* seconds. This version really does count prime numbers
|
||||||
|
* but omits the numbers 1, 3 and all even numbers. The
|
||||||
|
* expected count is 1899.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <sys/time.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
#define SIZE 8190
|
||||||
|
|
||||||
|
//#define SIZE 8388608
|
||||||
|
double time_diff(struct timeval x , struct timeval y);
|
||||||
|
|
||||||
|
int sieve () {
|
||||||
|
|
||||||
|
unsigned char flags [SIZE + 1];
|
||||||
|
int iter;
|
||||||
|
int count;
|
||||||
|
|
||||||
|
for (iter = 1; iter <= 10; iter++)
|
||||||
|
{
|
||||||
|
int i, prime, k;
|
||||||
|
|
||||||
|
count = 0;
|
||||||
|
|
||||||
|
for (i = 0; i <= SIZE; i++)
|
||||||
|
flags [i] = 1;
|
||||||
|
|
||||||
|
for (i = 0; i <= SIZE; i++)
|
||||||
|
{
|
||||||
|
if (flags [i])
|
||||||
|
{
|
||||||
|
prime = i + i + 3;
|
||||||
|
k = i + prime;
|
||||||
|
|
||||||
|
while (k <= SIZE)
|
||||||
|
{
|
||||||
|
flags [k] = 0;
|
||||||
|
k += prime;
|
||||||
|
}
|
||||||
|
|
||||||
|
count++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return count;
|
||||||
|
}
|
||||||
|
|
||||||
|
int main () {
|
||||||
|
|
||||||
|
int ans;
|
||||||
|
|
||||||
|
struct timeval before , after;
|
||||||
|
gettimeofday(&before , NULL);
|
||||||
|
|
||||||
|
ans = sieve ();
|
||||||
|
gettimeofday(&after , NULL);
|
||||||
|
if (ans != 1899)
|
||||||
|
printf ("Sieve result wrong, ans = %d, expected 1899", ans);
|
||||||
|
|
||||||
|
printf("Total time elapsed : %.0lf us\n" , time_diff(before , after) );
|
||||||
|
|
||||||
|
|
||||||
|
printf("Round 2\n");
|
||||||
|
gettimeofday(&before , NULL);
|
||||||
|
|
||||||
|
ans = sieve ();
|
||||||
|
gettimeofday(&after , NULL);
|
||||||
|
if (ans != 1899)
|
||||||
|
printf ("Sieve result wrong, ans = %d, expected 1899", ans);
|
||||||
|
|
||||||
|
printf("Total time elapsed : %.0lf us\n" , time_diff(before , after) );
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
double time_diff(struct timeval x , struct timeval y)
|
||||||
|
{
|
||||||
|
double x_ms , y_ms , diff;
|
||||||
|
|
||||||
|
x_ms = (double)x.tv_sec*1000000 + (double)x.tv_usec;
|
||||||
|
y_ms = (double)y.tv_sec*1000000 + (double)y.tv_usec;
|
||||||
|
|
||||||
|
diff = (double)y_ms - (double)x_ms;
|
||||||
|
|
||||||
|
return diff;
|
||||||
|
}
|
||||||
|
|
||||||
15
testsBP/simple/Makefile
Normal file
15
testsBP/simple/Makefile
Normal file
@ -0,0 +1,15 @@
|
|||||||
|
TARGETDIR := simple
|
||||||
|
TARGET := $(TARGETDIR)/$(TARGETDIR).elf
|
||||||
|
ROOT := ..
|
||||||
|
LIBRARY_DIRS := ${ROOT}/crt0
|
||||||
|
LIBRARY_FILES := crt0
|
||||||
|
LINK_FLAGS := -nostartfiles -Wl,-Map=$(TARGET).map
|
||||||
|
|
||||||
|
CFLAGS =-march=rv64ifd -Wa,-alhs -Wa,-L -mcmodel=medany -mstrict-align
|
||||||
|
CC=riscv64-unknown-elf-gcc
|
||||||
|
DA=riscv64-unknown-elf-objdump -d
|
||||||
|
|
||||||
|
|
||||||
|
include $(ROOT)/makefile.inc
|
||||||
|
|
||||||
|
|
||||||
11
testsBP/simple/fail.s
Normal file
11
testsBP/simple/fail.s
Normal file
@ -0,0 +1,11 @@
|
|||||||
|
# Ross Thompson
|
||||||
|
# March 17, 2021
|
||||||
|
# Oklahoma State University
|
||||||
|
|
||||||
|
.section .text
|
||||||
|
.global fail
|
||||||
|
.type fail, @function
|
||||||
|
fail:
|
||||||
|
li gp, 1
|
||||||
|
li a0, -1
|
||||||
|
ecall
|
||||||
6
testsBP/simple/header.h
Normal file
6
testsBP/simple/header.h
Normal file
@ -0,0 +1,6 @@
|
|||||||
|
#ifndef __header
|
||||||
|
#define __header
|
||||||
|
|
||||||
|
int fail();
|
||||||
|
int simple_csrbr_test();
|
||||||
|
#endif
|
||||||
10
testsBP/simple/main.c
Normal file
10
testsBP/simple/main.c
Normal file
@ -0,0 +1,10 @@
|
|||||||
|
#include "header.h"
|
||||||
|
|
||||||
|
int main(){
|
||||||
|
int res = simple_csrbr_test();
|
||||||
|
if (res < 0) {
|
||||||
|
fail();
|
||||||
|
return 0;
|
||||||
|
}else
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
52
testsBP/simple/sample.s
Normal file
52
testsBP/simple/sample.s
Normal file
@ -0,0 +1,52 @@
|
|||||||
|
.section .text
|
||||||
|
.global simple_csrbr_test
|
||||||
|
.type simple_csrbr_test, @function
|
||||||
|
|
||||||
|
simple_csrbr_test:
|
||||||
|
|
||||||
|
# step 1 enable the performance counters
|
||||||
|
# by default the hardware enables all performance counters
|
||||||
|
# however we will eventually want to manually enable incase
|
||||||
|
# some other code disables thems
|
||||||
|
|
||||||
|
# step 2 read performance counters into general purpose registers
|
||||||
|
|
||||||
|
csrrw t2, 0xB05, x0 # t2 = BR COUNT (perf count 5)
|
||||||
|
csrrw t3, 0xB04, x0 # t3 = BRMP COUNT (perf count 4)
|
||||||
|
|
||||||
|
# step 3 simple loop to show the counters are updated.
|
||||||
|
li t0, 0 # this is the loop counter
|
||||||
|
li t1, 100 # this is the loop end condition
|
||||||
|
|
||||||
|
# for(t1 = 0; t1 < t0; t1++);
|
||||||
|
|
||||||
|
loop:
|
||||||
|
addi t0, t0, 1
|
||||||
|
blt t0, t1, loop
|
||||||
|
|
||||||
|
loop_done:
|
||||||
|
|
||||||
|
# step 2 read performance counters into general purpose registers
|
||||||
|
|
||||||
|
csrrw t4, 0xB05, x0 # t4 = BR COUNT (perf count 5)
|
||||||
|
csrrw t5, 0xB04, x0 # t5 = BRMP COUNT (perf count 4)
|
||||||
|
|
||||||
|
sub t2, t4, t2 # this is the number of branch instructions committed.
|
||||||
|
sub t3, t5, t3 # this is the number of branch mispredictions committed.
|
||||||
|
|
||||||
|
# now check if the branch count equals 100 and if the branch
|
||||||
|
bne t4, t2, fail
|
||||||
|
# *** come back to t3
|
||||||
|
|
||||||
|
|
||||||
|
pass:
|
||||||
|
li a0, 0
|
||||||
|
ret
|
||||||
|
|
||||||
|
fail:
|
||||||
|
li a0, -1
|
||||||
|
ret
|
||||||
|
|
||||||
|
.data
|
||||||
|
sample_data:
|
||||||
|
.int 0
|
||||||
@ -49,6 +49,7 @@ for(my $i=0; $i<=$#ARGV; $i++) {
|
|||||||
}
|
}
|
||||||
|
|
||||||
while(<FILE>) {
|
while(<FILE>) {
|
||||||
|
# *** this mode stuff does not work if a section is missing or reordered.
|
||||||
if ($mode == 0) { # Parse code
|
if ($mode == 0) { # Parse code
|
||||||
# print("Examining $_\n");
|
# print("Examining $_\n");
|
||||||
if (/^\s*(\S{1,16}):\s+(\S+)\s+/) {
|
if (/^\s*(\S{1,16}):\s+(\S+)\s+/) {
|
||||||
|
|||||||
@ -316,7 +316,7 @@ string tests32i[] = {
|
|||||||
};
|
};
|
||||||
|
|
||||||
string testsBP64[] = '{
|
string testsBP64[] = '{
|
||||||
"rv64BP/reg-test", "10000",
|
"rv64BP/simple", "10000",
|
||||||
"rv64BP/sieve", "1000000"
|
"rv64BP/sieve", "1000000"
|
||||||
};
|
};
|
||||||
string tests[];
|
string tests[];
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user