mpabi
254 lines
3.9 KiB
ArmAsm
254 lines
3.9 KiB
ArmAsm
.file "task10_heap4_demo.c"
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.option nopic
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.attribute arch, "rv32i2p1_zicsr2p0_zifencei2p0"
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.attribute unaligned_access, 0
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.attribute stack_align, 16
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.text
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.align 2
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.type heap_malloc_model, @function
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heap_malloc_model:
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beq a0,zero,.L1
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addi a4,a0,8
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andi a0,a0,7
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beq a0,zero,.L3
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andi a4,a4,-8
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addi a4,a4,8
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.L3:
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lw a0,start
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lw a3,end_marker
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beq a0,a3,.L10
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lla a2,start
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j .L8
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.L11:
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mv a0,a5
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.L8:
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lw a5,4(a0)
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bgeu a5,a4,.L12
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lw a5,0(a0)
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mv a2,a0
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bne a5,a3,.L11
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li a0,0
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ret
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.L12:
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sub a3,a5,a4
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li a1,16
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bleu a3,a1,.L5
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add a5,a0,a4
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sw a3,4(a5)
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lw a3,0(a0)
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sw a3,0(a5)
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sw a5,0(a2)
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sw a4,4(a0)
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.L6:
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sw zero,0(a0)
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lw a5,4(a0)
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li a3,-2147483648
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or a5,a5,a3
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sw a5,4(a0)
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lla a3,free_bytes_remaining
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lw a5,0(a3)
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sub a5,a5,a4
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sw a5,0(a3)
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lw a4,minimum_ever_free
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bgeu a5,a4,.L7
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sw a5,minimum_ever_free,a4
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.L7:
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addi a0,a0,8
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ret
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.L5:
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lw a4,0(a0)
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sw a4,0(a2)
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mv a4,a5
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j .L6
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.L10:
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li a0,0
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.L1:
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ret
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.size heap_malloc_model, .-heap_malloc_model
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.align 2
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.type heap_free_model, @function
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heap_free_model:
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beq a0,zero,.L13
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lw a5,-4(a0)
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blt a5,zero,.L19
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.L13:
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ret
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.L19:
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addi a3,a0,-8
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slli a5,a5,1
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srli a2,a5,1
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sw a2,-4(a0)
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lla a4,free_bytes_remaining
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lw a5,0(a4)
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add a5,a5,a2
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sw a5,0(a4)
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lla a5,start
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.L15:
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mv a4,a5
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lw a5,0(a5)
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bgtu a3,a5,.L15
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add a1,a3,a2
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beq a5,a1,.L20
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.L16:
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sw a5,-8(a0)
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lla a5,start
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beq a4,a5,.L17
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lw a2,4(a4)
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slli a5,a2,1
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srli a5,a5,1
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add a5,a4,a5
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beq a3,a5,.L21
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.L17:
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sw a3,0(a4)
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ret
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.L20:
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lw a5,4(a5)
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add a5,a5,a2
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sw a5,-4(a0)
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lw a5,0(a4)
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lw a5,0(a5)
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j .L16
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.L21:
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lw a5,-4(a0)
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add a5,a5,a2
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sw a5,4(a4)
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lw a5,-8(a0)
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sw a5,0(a4)
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ret
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.size heap_free_model, .-heap_free_model
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.align 2
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.globl main
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.type main, @function
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main:
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addi sp,sp,-32
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sw ra,28(sp)
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sw s0,24(sp)
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sw s1,20(sp)
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sw s2,16(sp)
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sw s3,12(sp)
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sw s4,8(sp)
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lla a4,.LANCHOR0
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andi a3,a4,7
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mv a5,a4
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beq a3,zero,.L23
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andi a4,a4,-8
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addi a5,a4,8
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.L23:
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lla s0,.LANCHOR0+256
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sub s0,s0,a5
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andi s0,s0,-8
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addi a4,a5,-8
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add s0,s0,a4
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sw s0,end_marker,a4
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sw zero,0(s0)
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sw zero,4(s0)
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sw s0,0(a5)
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sub a4,s0,a5
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sw a4,4(a5)
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lla s4,start
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sw a5,0(s4)
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sw zero,4(s4)
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sw a4,free_bytes_remaining,a5
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sw a4,minimum_ever_free,a5
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li a0,24
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call heap_malloc_model
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mv s2,a0
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li a0,40
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call heap_malloc_model
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mv s3,a0
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mv a0,s2
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call heap_free_model
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li a0,16
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call heap_malloc_model
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mv s1,a0
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mv a0,s3
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call heap_free_model
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mv a0,s1
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call heap_free_model
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snez s2,s2
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snez s3,s3
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and s2,s2,s3
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snez s1,s1
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and s1,s1,s2
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sw s1,g_allocations_ok,a5
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lw a5,0(s4)
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beq s0,a5,.L24
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mv a4,a5
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li a3,0
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.L25:
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addi a3,a3,1
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lw a4,0(a4)
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bne s0,a4,.L25
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sw a3,g_final_free_nodes,a2
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li a3,0
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.L26:
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lw a2,4(a5)
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add a3,a3,a2
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lw a5,0(a5)
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bne a5,a4,.L26
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.L27:
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sw a3,g_final_free_total,a5
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lw a5,minimum_ever_free
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sw a5,g_minimum_ever_free,a4
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li a0,0
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lw ra,28(sp)
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lw s0,24(sp)
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lw s1,20(sp)
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lw s2,16(sp)
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lw s3,12(sp)
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lw s4,8(sp)
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addi sp,sp,32
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jr ra
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.L24:
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sw zero,g_final_free_nodes,a5
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li a3,0
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j .L27
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.size main, .-main
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.globl g_minimum_ever_free
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.globl g_final_free_total
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.globl g_final_free_nodes
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.globl g_allocations_ok
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.bss
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.align 2
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.set .LANCHOR0,. + 0
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.type heap_area, @object
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.size heap_area, 264
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heap_area:
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.zero 264
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.section .sbss,"aw",@nobits
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.align 2
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.type minimum_ever_free, @object
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.size minimum_ever_free, 4
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minimum_ever_free:
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.zero 4
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.type free_bytes_remaining, @object
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.size free_bytes_remaining, 4
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free_bytes_remaining:
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.zero 4
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.type g_minimum_ever_free, @object
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.size g_minimum_ever_free, 4
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g_minimum_ever_free:
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.zero 4
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.type g_final_free_total, @object
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.size g_final_free_total, 4
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g_final_free_total:
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.zero 4
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.type g_final_free_nodes, @object
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.size g_final_free_nodes, 4
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g_final_free_nodes:
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.zero 4
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.type g_allocations_ok, @object
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.size g_allocations_ok, 4
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g_allocations_ok:
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.zero 4
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.type end_marker, @object
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.size end_marker, 4
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end_marker:
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.zero 4
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.type start, @object
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.size start, 8
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start:
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.zero 8
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.ident "GCC: (15.2.0-23) 15.2.0"
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.section .note.GNU-stack,"",@progbits
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