search for: file_sector

...x.asm +++ b/core/ldlinux.asm @@ -984,10 +984,10 @@ allocate_file: ; Assumes DS == ES == CS. ; ; If successful: -; ZF clear +; ZF set ; SI = file pointer ; If unsuccessful -; ZF set +; ZF clear ; EAX clobbered ; alloc_fill_dir: @@ -999,12 +999,14 @@ alloc_fill_dir: mov [si+file_sector],eax ; Current sector mov dword [si+file_bytesleft],0 ; Current offset mov [si+file_left],eax ; Beginning sector + xor bx,bx ; ZF <- 1 pop bx ret .alloc_failure: + xor eax,eax ; ZF <- 1 + and bx,bx ; ZF = 0; BX from allocate_file not 0 pop bx - xor eax,eax ; ZF &lt...

...ture for a directory starting in +; sector EAX. +; +; Assumes DS == ES == CS. +; +; If successful: +; ZF clear +; SI = file pointer +; If unsuccessful +; ZF set +; EAX clobbered +; +alloc_fill_dir: + push bx + call allocate_file + jnz .alloc_failure +.found: + mov si,bx + mov [si+file_sector],eax ; Current sector + mov dword [si+file_bytesleft],0 ; Current offset + mov [si+file_left],eax ; Beginning sector + pop bx + ret + +.alloc_failure: + pop bx + xor eax,eax ; ZF <- 1 + ret + +; ; search_dos_dir: ; Search a specific directory for a pre-mangled filename in ;...

...ture for a directory starting in +; sector EAX. +; +; Assumes DS == ES == CS. +; +; If successful: +; ZF clear +; SI = file pointer +; If unsuccessful +; ZF set +; EAX clobbered +; +alloc_fill_dir: + push bx + call allocate_file + jnz .alloc_failure +.found: + mov si,bx + mov [si+file_sector],eax ; Current sector + mov dword [si+file_bytesleft],0 ; Current offset + mov [si+file_left],eax ; Beginning sector + pop bx + ret + +.alloc_failure: + pop bx + xor eax,eax ; ZF <- 1 + ret + +; ; search_dos_dir: ; Search a specific directory for a pre-mangled filename in ;...

...root @@ -918,12 +918,12 @@ call searchdir_iso jz .no_isolinux_dir .found_dir: - mov [CurDir+dir_len],eax + mov [CurrentDir+dir_len],eax mov eax,[si+file_left] - mov [CurDir+dir_clust],eax + mov [CurrentDir+dir_clust],eax xor eax,eax ; Free this file pointer entry xchg eax,[si+file_sector] - mov [CurDir+dir_lba],eax + mov [CurrentDir+dir_lba],eax %ifdef DEBUG_MESSAGES push si mov si,dbg_isodir_msg @@ -1138,7 +1138,7 @@ push es push ds pop es ; ES = DS - mov si,CurDir + mov si,CurrentDir cmp byte [di],'/' ; If filename begins with slash jne .not_...

...struc, open_dir_t to house the needed data elements, or reuse the existing struc? If I should reuse open_file_t, how should I and should I allocate a new array Dirs or reuse Files? If I don't reuse open_file_t, Dirs will be a necessity. My first thoughts are that if I reuse open_file_t, that file_sector holds the current sector number, file_left holds the starting sector number and file_bytesleft holds the sector offset. I just noticed the struc dir_t in ISOLINUX but I don't think that it would be appropriate for storing the open directories. If I create open_dir_t, this is what I think firs...