mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-27 06:19:42 +03:00
2ec96e508c
svn path=/trunk/netsurf/; revision=12336
391 lines
7.8 KiB
ArmAsm
391 lines
7.8 KiB
ArmAsm
#if defined(__aof__)
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AREA |ARM$$code|,CODE,READONLY
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IMPORT messages_get
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IMPORT realloc
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IMPORT strcpy
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IMPORT |__rt_stkovf_split_big|
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EXPORT awrender_init
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EXPORT awrender_render
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aw_rsz_block * 0
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aw_rsz_size * 4
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aw_fixed_block * 8
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aw_fixed_size * 12
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aw_sl * 16
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aw_fp * 20
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sizeof_aw * 24
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; os_error *awrender_init(byte **doc, size_t *doc_size, void *init_routine, void *init_workspace);
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awrender_init MOV ip,sp
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STMFD sp!,{a1,a2,v1,v2,fp,ip,lr,pc}
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SUB fp,ip,#4
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SUB ip,sp,#512
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CMP ip,sl
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BLMI |__rt_stkovf_split_big|
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LDR v2,=aw_temp
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LDR a1,[a1]
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MOV v1,a3
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LDR a3,[a2]
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MOV ip,a4
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STR a1,[v2,#aw_rsz_block]
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STR a3,[v2,#aw_rsz_size]
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MOV a2,#-1
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STR a2,[v2,#aw_fixed_block]
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STR a3,[v2,#aw_fixed_size]
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STR sl,[v2,#aw_sl]
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STR fp,[v2,#aw_fp]
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ADR a2,aw_callback
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MOV lr,pc
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MOV pc,v1
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MOVVC a1,#0
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;return updated block ptr & size to caller
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LDR a2,[fp,#-28]
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LDR a3,[fp,#-24]
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LDR ip,[v2,#aw_rsz_block]
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LDR lr,[v2,#aw_rsz_size]
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STR ip,[a2]
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STR lr,[a3]
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LDMEA fp,{v1,v2,fp,sp,pc}
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; os_error *awrender_render(const char *doc,
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; const struct awinfo_block *info,
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; const os_trfm *trans,
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; const int *vdu_vars,
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; char **rsz_block,
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; size_t *rsz_size,
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; int wysiwyg_setting,
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; int output_dest,
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; size_t doc_size,
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; void *routine,
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; void *workspace);
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awrender_render MOV ip,sp
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STMFD sp!,{v1-v4,fp,ip,lr,pc}
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SUB fp,ip,#4
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SUB ip,sp,#512
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CMP ip,sl
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BLMI |__rt_stkovf_split_big|
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LDR R12,[fp,#20]
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LDR R14,=aw_temp
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LDR R5,[fp,#4]
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LDR R6,[fp,#12]
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LDR R4,[R5] ;resizable block
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LDR R7,[fp,#16]
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STR R4,[R14,#aw_rsz_block]
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STR R0,[R14,#aw_fixed_block] ;document ptr
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STR R12,[R14,#aw_fixed_size] ;document size
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LDR R12,[fp,#8]
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STR R5,[sp,#-4]! ;ptr to receive block
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STR R12,[sp,#-4]! ;ptr to receive size
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LDR R12,[R12]
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ADR R5,aw_callback
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STR R12,[R14,#aw_rsz_size]
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STR sl,[R14,#aw_sl]
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STR fp,[R14,#aw_fp]
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LDR R12,[fp,#28]
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MOV lr,pc
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LDR pc,[fp,#24]
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MOVVC a1,#0
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;return updated block ptr & size to caller
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LDR R7,=aw_temp
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LDR R12,[sp],#4
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LDR R4,[sp],#4
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LDR R5,[R7,#aw_rsz_size]
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LDR R6,[R7,#aw_rsz_block]
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STR R5,[R12]
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STR R6,[R4]
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LDMEA fp,{v1-v4,fp,sp,pc}
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; Callback routine for block resizing
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; (passed to AWRender init and render routines)
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;
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; entry R11 = reason code
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; 0 = CallBackReason_Memory
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; 3 = CallBackReason_Interface
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; (0 => return capabilities)
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; exit R0 => base of resizable block
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; R1 = size of resizable block
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; R2 => base of fixed block (or -1 if no fixed block)
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; R3 = size of fixed block (or document in resizable block)
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; VC if resize successful, VS and R0 => error otherwise
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aw_callback TEQ R11,#3
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TEQEQ R0,#0
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MOVEQ R0,#1<<10 ;background colour supplied
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TEQ R11,#0
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LDREQ R11,=aw_temp
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MOVNE PC,R14
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CMP R0,#-1 ;read block size?
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LDRNE R2,[R11,#aw_rsz_size]
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MOVNE R1,R0 ;new block size
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LDR R0,[R11,#aw_rsz_block]
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BEQ aw_read
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; Note: because ArtworksRenderer seems to call
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; this routine for every scanline rendered
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; we never call realloc unless we have to in
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; order to expand the block. Also it calls
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; us with a size request of 0 which we must
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; safely ignore otherwise rendering will stop.
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CMP R1,R2
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BLS aw_read
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STMFD R13!,{R1,R10-R12,R14}
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LDR sl,[R11,#aw_sl]
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LDR fp,[R11,#aw_fp]
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BL realloc
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LDMFD R13!,{R1,R10-R12,R14}
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CMP R0,#0 ;did it work?
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BEQ aw_nomem
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STR R0,[R11]
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STR R1,[R11,#aw_rsz_size]
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aw_read ; return details of fixed block
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LDR R2,[R11,#aw_fixed_block]
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LDR R3,[R11,#aw_fixed_size]
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SUBS R11,R11,R11 ;clear V
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MOV PC,R14
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aw_nomem STMFD R13!,{R10,R12,R14}
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LDR sl,[R11,#aw_sl]
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LDR fp,[R11,#aw_fp]
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ADR R0,tok_nomem
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BL messages_get
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MOV a2,a1
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LDR a1,=errblk + 4
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BL strcpy
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SUB R0,R0,#4 ;error number already 0
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MOV R11,#0 ;restore reason code
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CMP PC,#1<<31 ;set V
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LDMFD R13!,{R10,R12,PC}
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tok_nomem = "NoMemory",0
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ALIGN
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AREA |ARM$$zidata|,DATA,NOINIT
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aw_temp % sizeof_aw
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errblk % 256
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END
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#elif defined(__ELF__)
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.text
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.set aw_rsz_block, 0
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.set aw_rsz_size, 4
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.set aw_fixed_block, 8
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.set aw_fixed_size, 12
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.set aw_sl, 16
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.set aw_fp, 20
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.set sizeof_aw, 24
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@ os_error *awrender_init(byte **doc, size_t *doc_size, void *init_routine, void *init_workspace);
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.global awrender_init
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awrender_init: MOV ip,sp
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STMFD sp!,{a1,a2,v1,v2,fp,ip,lr,pc}
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SUB fp,ip,#4
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SUB ip,sp,#512
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CMP ip,sl
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BLMI __rt_stkovf_split_big
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LDR v2,=aw_temp
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LDR a1,[a1]
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MOV v1,a3
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LDR a3,[a2]
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MOV ip,a4
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STR a1,[v2,#aw_rsz_block]
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STR a3,[v2,#aw_rsz_size]
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MOV a2,#-1
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STR a2,[v2,#aw_fixed_block]
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STR a3,[v2,#aw_fixed_size]
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STR sl,[v2,#aw_sl]
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STR fp,[v2,#aw_fp]
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ADR a2,aw_callback
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MOV lr,pc
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MOV pc,v1
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MOVVC a1,#0
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@ return updated block ptr & size to caller
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LDR a2,[fp,#-28]
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LDR a3,[fp,#-24]
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LDR ip,[v2,#aw_rsz_block]
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LDR lr,[v2,#aw_rsz_size]
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STR ip,[a2]
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STR lr,[a3]
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LDMEA fp,{v1,v2,fp,sp,pc}
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@ os_error *awrender_render(const char *doc,
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@ const struct awinfo_block *info,
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@ const os_trfm *trans,
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@ const int *vdu_vars,
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@ char **rsz_block,
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@ size_t *rsz_size,
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@ int wysiwyg_setting,
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@ int output_dest,
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@ size_t doc_size,
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@ void *routine,
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@ void *workspace);
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.global awrender_render
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awrender_render: MOV ip,sp
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STMFD sp!,{v1-v4,fp,ip,lr,pc}
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SUB fp,ip,#4
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SUB ip,sp,#512
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CMP ip,sl
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BLMI __rt_stkovf_split_big
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LDR R12,[fp,#20]
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LDR R14,=aw_temp
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LDR R5,[fp,#4]
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LDR R6,[fp,#12]
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LDR R4,[R5] @ resizable block
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LDR R7,[fp,#16]
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STR R4,[R14,#aw_rsz_block]
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STR R0,[R14,#aw_fixed_block] @ document ptr
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STR R12,[R14,#aw_fixed_size] @ document size
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LDR R12,[fp,#8]
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STR R5,[sp,#-4]! @ ptr to receive block
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STR R12,[sp,#-4]! @ ptr to receive size
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LDR R12,[R12]
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ADR R5,aw_callback
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STR R12,[R14,#aw_rsz_size]
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STR sl,[R14,#aw_sl]
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STR fp,[R14,#aw_fp]
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LDR R12,[fp,#28]
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MOV lr,pc
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LDR pc,[fp,#24]
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MOVVC a1,#0
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@ return updated block ptr & size to caller
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LDR R7,=aw_temp
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LDR R12,[sp],#4
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LDR R4,[sp],#4
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LDR R5,[R7,#aw_rsz_size]
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LDR R6,[R7,#aw_rsz_block]
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STR R5,[R12]
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STR R6,[R4]
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LDMEA fp,{v1-v4,fp,sp,pc}
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@ Callback routine for block resizing
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@ (passed to AWRender init and render routines)
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@
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@ entry R11 = reason code
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@ 0 = CallBackReason_Memory
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@ 3 = CallBackReason_Interface
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@ (0 => return capabilities)
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@ exit R0 => base of resizable block
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@ R1 = size of resizable block
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@ R2 => base of fixed block (or -1 if no fixed block)
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@ R3 = size of fixed block (or document in resizable block)
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@ VC if resize successful, VS and R0 => error otherwise
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aw_callback: TEQ R11,#3
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TEQEQ R0,#0
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MOVEQ R0,#1<<10 @ background colour supplied
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TEQ R11,#0
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LDREQ R11,=aw_temp
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MOVNE PC,R14
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CMP R0,#-1 @ read block size?
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LDRNE R2,[R11,#aw_rsz_size]
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MOVNE R1,R0 @ new block size
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LDR R0,[R11,#aw_rsz_block]
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BEQ aw_read
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@ Note: because ArtworksRenderer seems to call
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@ this routine for every scanline rendered
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@ we never call realloc unless we have to in
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@ order to expand the block. Also it calls
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@ us with a size request of 0 which we must
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@ safely ignore otherwise rendering will stop.
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CMP R1,R2
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BLS aw_read
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STMFD R13!,{R1,R10-R12,R14}
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LDR sl,[R11,#aw_sl]
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LDR fp,[R11,#aw_fp]
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BL realloc
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LDMFD R13!,{R1,R10-R12,R14}
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CMP R0,#0 @ did it work?
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BEQ aw_nomem
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STR R0,[R11]
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STR R1,[R11,#aw_rsz_size]
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aw_read: @ return details of fixed block
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LDR R2,[R11,#aw_fixed_block]
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LDR R3,[R11,#aw_fixed_size]
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SUBS R11,R11,R11 @ clear V
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MOV PC,R14
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aw_nomem: STMFD R13!,{R10,R12,R14}
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LDR sl,[R11,#aw_sl]
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LDR fp,[R11,#aw_fp]
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ADR R0,tok_nomem
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BL messages_get
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MOV a2,a1
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LDR a1,=errblk + 4
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BL strcpy
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SUB R0,R0,#4 @ error number already 0
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MOV R11,#0 @ restore reason code
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CMP PC,#1<<31 @ set V
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LDMFD R13!,{R10,R12,PC}
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tok_nomem: .asciz "NoMemory"
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.align
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.bss
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aw_temp: .space sizeof_aw
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.type aw_temp, %object
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.size aw_temp, . - aw_temp
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errblk: .space 256
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.type errblk, %object
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.size errblk, . - errblk
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.end
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#endif
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