📄 malloc.asm
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;--------------------------------------------------------
; File Created by SDCC : FreeWare ANSI-C Compiler
; Version 2.3.1-pj3 Sun Jan 20 13:10:21 2002
;--------------------------------------------------------
.module malloc
;--------------------------------------------------------
; Public variables in this module
;--------------------------------------------------------
.globl _free
.globl _malloc
.globl _init_dynamic_memory
.globl _init_dynamic_memory_PARM_2
;--------------------------------------------------------
; special function registers
;--------------------------------------------------------
;--------------------------------------------------------
; special function bits
;--------------------------------------------------------
;--------------------------------------------------------
; internal ram data
;--------------------------------------------------------
.area DSEG (DATA)
;--------------------------------------------------------
; overlayable items in internal ram
;--------------------------------------------------------
.area OSEG (OVR,DATA)
_malloc_sloc0_1_0::
.ds 2
_malloc_sloc1_1_0::
.ds 2
;--------------------------------------------------------
; indirectly addressable internal ram data
;--------------------------------------------------------
.area ISEG (DATA)
;--------------------------------------------------------
; bit data
;--------------------------------------------------------
.area BSEG (BIT)
;--------------------------------------------------------
; external ram data
;--------------------------------------------------------
.area XSEG (XDATA)
_FIRST_MEMORY_HEADER_PTR:
.ds 2
_init_dynamic_memory_PARM_2::
.ds 2
_init_dynamic_memory_array_1_1::
.ds 2
_malloc_size_1_1::
.ds 2
_malloc_current_header_1_1::
.ds 2
_free_p_1_1::
.ds 2
;--------------------------------------------------------
; external initialized ram data
;--------------------------------------------------------
.area XISEG (XDATA)
;--------------------------------------------------------
; global & static initialisations
;--------------------------------------------------------
.area GSINIT (CODE)
.area GSFINAL (CODE)
.area GSINIT (CODE)
;--------------------------------------------------------
; Home
;--------------------------------------------------------
.area HOME (CODE)
.area CSEG (CODE)
;--------------------------------------------------------
; code
;--------------------------------------------------------
.area CSEG (CODE)
;------------------------------------------------------------
;Allocation info for local variables in function 'init_dynamic_memory'
;------------------------------------------------------------
;size Allocated to in memory with name '_init_dynamic_memory_PARM_2'
;array Allocated to in memory with name '_init_dynamic_memory_array_1_1'
; malloc.c 148
; -----------------------------------------
; function init_dynamic_memory
; -----------------------------------------
_init_dynamic_memory:
ar2 = 0x02
ar3 = 0x03
ar4 = 0x04
ar5 = 0x05
ar6 = 0x06
ar7 = 0x07
ar0 = 0x00
ar1 = 0x01
; malloc.c 180
; genReceive
push dph
push dpl
mov dptr,#_init_dynamic_memory_array_1_1
pop acc
movx @dptr,a
pop acc
inc dptr
movx @dptr,a
; malloc.c 170
; genAssign
mov dptr,#_init_dynamic_memory_array_1_1
movx a,@dptr
mov r2,a
inc dptr
movx a,@dptr
; genIfx
; Peephole 135 removed redundant mov
mov r3,a
orl a,r2
; genIfxJump
; Peephole 109 removed ljmp by inverse jump logic
jnz 00102$
00106$:
; malloc.c 172
; genPlus
mov dptr,#_init_dynamic_memory_array_1_1
; genPlusIncr
mov a,#0x01
add a,r2
movx @dptr,a
; Peephole 180 changed mov to clr
clr a
addc a,r3
inc dptr
movx @dptr,a
; malloc.c 173
; genAssign
mov dptr,#_init_dynamic_memory_PARM_2
movx a,@dptr
mov r2,a
inc dptr
movx a,@dptr
mov r3,a
; genMinus
; genMinusDec
dec r2
cjne r2,#0xff,00107$
dec r3
00107$:
; genAssign
mov dptr,#_init_dynamic_memory_PARM_2
mov a,r2
movx @dptr,a
inc dptr
mov a,r3
movx @dptr,a
00102$:
; malloc.c 175
; genAssign
mov dptr,#_init_dynamic_memory_array_1_1
movx a,@dptr
mov r2,a
inc dptr
movx a,@dptr
mov r3,a
; genAssign
mov dptr,#_FIRST_MEMORY_HEADER_PTR
mov a,r2
movx @dptr,a
inc dptr
mov a,r3
movx @dptr,a
; malloc.c 177
; genAssign
mov dptr,#_init_dynamic_memory_PARM_2
movx a,@dptr
mov r4,a
inc dptr
movx a,@dptr
mov r5,a
; genPlus
mov a,r4
add a,r2
mov r4,a
mov a,r5
addc a,r3
mov r5,a
; genMinus
mov a,r4
add a,#0xfa
mov r4,a
mov a,r5
addc a,#0xff
mov r5,a
; genPointerSet
; genFarPointerSet
mov dpl,r2
mov dph,r3
mov a,r4
movx @dptr,a
inc dptr
mov a,r5
movx @dptr,a
; malloc.c 178
; genPointerSet
; genFarPointerSet
mov dpl,r4
mov dph,r5
; Peephole 101 removed redundant mov
; Peephole 180 changed mov to clr
clr a
movx @dptr,a
inc dptr
movx @dptr,a
; malloc.c 179
; genPlus
; genPlusIncr
mov a,#0x02
add a,r2
mov dpl,a
; Peephole 180 changed mov to clr
clr a
addc a,r3
mov dph,a
; genPointerSet
; genFarPointerSet
; Peephole 101 removed redundant mov
; Peephole 180 changed mov to clr
clr a
movx @dptr,a
inc dptr
movx @dptr,a
; malloc.c 180
; genPlus
; genPlusIncr
mov a,#0x04
add a,r2
mov dpl,a
; Peephole 180 changed mov to clr
clr a
addc a,r3
mov dph,a
; genPointerSet
; genFarPointerSet
; Peephole 101 removed redundant mov
; Peephole 180 changed mov to clr
clr a
movx @dptr,a
inc dptr
movx @dptr,a
00103$:
ret
;------------------------------------------------------------
;Allocation info for local variables in function 'malloc'
;------------------------------------------------------------
;size Allocated to in memory with name '_malloc_size_1_1'
;current_header Allocated to in memory with name '_malloc_current_header_1_1'
;new_header Allocated to in memory with name '_malloc_new_header_1_1'
; malloc.c 183
; -----------------------------------------
; function malloc
; -----------------------------------------
_malloc:
; malloc.c 0
; genReceive
push dph
push dpl
mov dptr,#_malloc_size_1_1
pop acc
movx @dptr,a
pop acc
inc dptr
movx @dptr,a
; malloc.c 188
; genAssign
mov dptr,#_malloc_size_1_1
movx a,@dptr
mov r2,a
inc dptr
movx a,@dptr
mov r3,a
; genCmpGt
; genCmp
clr c
mov a,#0xF9
subb a,r2
mov a,#0xFF
subb a,r3
; genIfxJump
; Peephole 108 removed ljmp by inverse jump logic
jnc 00102$
00122$:
; genRet
; Peephole 181 used 16 bit load of dptr
mov dptr,#0x0000
ljmp 00114$
00102$:
; malloc.c 189
; genPlus
mov a,#0x06
add a,r2
mov r2,a
; Peephole 180 changed mov to clr
clr a
addc a,r3
mov r3,a
; genAssign
mov dptr,#_malloc_size_1_1
mov a,r2
movx @dptr,a
inc dptr
mov a,r3
movx @dptr,a
; malloc.c 190
; genAssign
mov dptr,#_FIRST_MEMORY_HEADER_PTR
movx a,@dptr
mov r4,a
inc dptr
movx a,@dptr
mov r5,a
; genAssign
mov dptr,#_malloc_current_header_1_1
mov a,r4
movx @dptr,a
inc dptr
mov a,r5
movx @dptr,a
; malloc.c 191
00108$:
; malloc.c 201
; genAssign
mov dptr,#_malloc_current_header_1_1
movx a,@dptr
mov r4,a
inc dptr
movx a,@dptr
mov r5,a
; genPointerGet
; genFarPointerGet
mov dpl,r4
mov dph,r5
movx a,@dptr
mov r6,a
inc dptr
movx a,@dptr
mov r7,a
; genCast
mov _malloc_sloc0_1_0,r6
mov (_malloc_sloc0_1_0 + 1),r7
; malloc.c 202
; genCast
mov ar0,r4
mov ar1,r5
; genMinus
clr c
mov a,_malloc_sloc0_1_0
subb a,r0
mov r0,a
mov a,(_malloc_sloc0_1_0 + 1)
subb a,r1
mov r1,a
; malloc.c 203
; genPlus
; genPlusIncr
mov a,#0x04
add a,r4
mov _malloc_sloc0_1_0,a
; Peephole 180 changed mov to clr
clr a
addc a,r5
mov (_malloc_sloc0_1_0 + 1),a
; genPointerGet
; genFarPointerGet
mov dpl,_malloc_sloc0_1_0
mov dph,(_malloc_sloc0_1_0 + 1)
movx a,@dptr
mov _malloc_sloc1_1_0,a
inc dptr
movx a,@dptr
mov (_malloc_sloc1_1_0 + 1),a
; genMinus
clr c
mov a,r0
subb a,_malloc_sloc1_1_0
mov r0,a
mov a,r1
subb a,(_malloc_sloc1_1_0 + 1)
mov r1,a
; genCmpLt
; genCmp
clr c
mov a,r0
subb a,r2
mov a,r1
subb a,r3
; genIfxJump
; Peephole 108 removed ljmp by inverse jump logic
jnc 00109$
00123$:
; malloc.c 204
; genAssign
mov dptr,#_malloc_current_header_1_1
mov a,r6
movx @dptr,a
inc dptr
mov a,r7
movx @dptr,a
; malloc.c 205
; genPointerGet
; genFarPointerGet
mov dpl,r6
mov dph,r7
movx a,@dptr
mov r0,a
inc dptr
movx a,@dptr
; genIfx
; Peephole 135 removed redundant mov
mov r1,a
orl a,r0
; genIfxJump
jz 00124$
ljmp 00108$
00124$:
; genRet
; Peephole 181 used 16 bit load of dptr
mov dptr,#0x0000
ljmp 00114$
00109$:
; malloc.c 207
; genIfx
mov a,_malloc_sloc1_1_0
orl a,(_malloc_sloc1_1_0 + 1)
; genIfxJump
; Peephole 109 removed ljmp by inverse jump logic
jnz 00111$
00125$:
; malloc.c 209
; genPointerSet
; genFarPointerSet
mov dpl,_malloc_sloc0_1_0
mov dph,(_malloc_sloc0_1_0 + 1)
mov a,r2
movx @dptr,a
inc dptr
mov a,r3
movx @dptr,a
; malloc.c 210
; genPlus
mov a,#0x06
add a,r4
mov r0,a
; Peephole 180 changed mov to clr
clr a
addc a,r5
mov r1,a
; genRet
mov dpl,r0
mov dph,r1
ljmp 00114$
00111$:
; malloc.c 212
; genPlus
mov a,_malloc_sloc1_1_0
add a,r4
mov r0,a
mov a,(_malloc_sloc1_1_0 + 1)
addc a,r5
mov r1,a
; malloc.c 213
; genPointerSet
; genFarPointerSet
mov dpl,r0
mov dph,r1
mov a,r6
movx @dptr,a
inc dptr
mov a,r7
movx @dptr,a
; malloc.c 214
; genPlus
; genPlusIncr
mov a,#0x02
add a,r0
mov dpl,a
; Peephole 180 changed mov to clr
clr a
addc a,r1
mov dph,a
; genPointerSet
; genFarPointerSet
mov a,r4
movx @dptr,a
inc dptr
mov a,r5
movx @dptr,a
; malloc.c 215
; genPointerSet
; genFarPointerSet
mov dpl,r4
mov dph,r5
mov a,r0
movx @dptr,a
inc dptr
mov a,r1
movx @dptr,a
; malloc.c 216
; genIfx
mov a,r6
orl a,r7
; genIfxJump
; Peephole 110 removed ljmp by inverse jump logic
jz 00113$
00126$:
; genPointerGet
; genFarPointerGet
mov dpl,r0
mov dph,r1
movx a,@dptr
mov r4,a
inc dptr
movx a,@dptr
mov r5,a
; genPlus
; genPlusIncr
mov a,#0x02
add a,r4
mov dpl,a
; Peephole 180 changed mov to clr
clr a
addc a,r5
mov dph,a
; genPointerSet
; genFarPointerSet
mov a,r0
movx @dptr,a
inc dptr
mov a,r1
movx @dptr,a
00113$:
; malloc.c 217
; genPlus
; genPlusIncr
mov a,#0x04
add a,r0
mov dpl,a
; Peephole 180 changed mov to clr
clr a
addc a,r1
mov dph,a
; genPointerSet
; genFarPointerSet
mov a,r2
movx @dptr,a
inc dptr
mov a,r3
movx @dptr,a
; malloc.c 218
; genPlus
mov a,#0x06
add a,r0
mov r0,a
; Peephole 180 changed mov to clr
clr a
addc a,r1
mov r1,a
; genRet
mov dpl,r0
mov dph,r1
00114$:
ret
;------------------------------------------------------------
;Allocation info for local variables in function 'free'
;------------------------------------------------------------
;p Allocated to in memory with name '_free_p_1_1'
;prev_header Allocated to in memory with name '_free_prev_header_1_1'
; malloc.c 221
; -----------------------------------------
; function free
; -----------------------------------------
_free:
; malloc.c 0
; genReceive
push dph
push dpl
mov dptr,#_free_p_1_1
pop acc
movx @dptr,a
pop acc
inc dptr
movx @dptr,a
; malloc.c 224
; genAssign
mov dptr,#_free_p_1_1
movx a,@dptr
mov r2,a
inc dptr
movx a,@dptr
; genIfx
; Peephole 135 removed redundant mov
mov r3,a
orl a,r2
; genIfxJump
jnz 00113$
ljmp 00108$
00113$:
; malloc.c 226
; genMinus
mov a,r2
add a,#0xfa
mov r2,a
mov a,r3
addc a,#0xff
mov r3,a
; genAssign
mov dptr,#_free_p_1_1
mov a,r2
movx @dptr,a
inc dptr
mov a,r3
movx @dptr,a
; malloc.c 227
; genPlus
; genPlusIncr
mov a,#0x02
add a,r2
mov dpl,a
; Peephole 180 changed mov to clr
clr a
addc a,r3
mov dph,a
; genPointerGet
; genFarPointerGet
movx a,@dptr
mov r4,a
inc dptr
movx a,@dptr
; genIfx
; Peephole 135 removed redundant mov
mov r5,a
orl a,r4
; genIfxJump
; Peephole 110 removed ljmp by inverse jump logic
jz 00104$
00114$:
; malloc.c 230
; genPointerGet
; genFarPointerGet
mov dpl,r2
mov dph,r3
movx a,@dptr
mov r6,a
inc dptr
movx a,@dptr
mov r7,a
; genPointerSet
; genFarPointerSet
mov dpl,r4
mov dph,r5
mov a,r6
movx @dptr,a
inc dptr
mov a,r7
movx @dptr,a
; malloc.c 231
; genIfx
mov a,r6
orl a,r7
; genIfxJump
; Peephole 110 removed ljmp by inverse jump logic
jz 00108$
00115$:
; genPlus
; genPlusIncr
mov a,#0x02
add a,r6
mov dpl,a
; Peephole 180 changed mov to clr
clr a
addc a,r7
mov dph,a
; genPointerSet
; genFarPointerSet
mov a,r4
movx @dptr,a
inc dptr
mov a,r5
movx @dptr,a
; Peephole 132 changed ljmp to sjmp
sjmp 00108$
00104$:
; malloc.c 233
; genPlus
; genPlusIncr
mov a,#0x04
add a,r2
mov dpl,a
; Peephole 180 changed mov to clr
clr a
addc a,r3
mov dph,a
; genPointerSet
; genFarPointerSet
; Peephole 101 removed redundant mov
; Peephole 180 changed mov to clr
clr a
movx @dptr,a
inc dptr
movx @dptr,a
00108$:
ret
.area CSEG (CODE)
.area XINIT (CODE)
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