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__0a98 → last_valid_address

This commit is contained in:
Juhani Krekelä 2021-08-01 16:39:06 +03:00
parent 3ecb399a46
commit 73e7beb441
1 changed files with 8 additions and 7 deletions
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15
edlin.asm
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@ -218,7 +218,7 @@ setup_file_parameters: ; 01ec
mov cx, [psp_segment_size] mov cx, [psp_segment_size]
dec cx dec cx
mov [__0a98], cx mov [last_valid_address], cx
test byte [new_file_flag], 0xff test byte [new_file_flag], 0xff
jnz initialize_editor jnz initialize_editor
@ -457,7 +457,7 @@ __0388:
mov ah, sys_set_dta mov ah, sys_set_dta
int 0x21 int 0x21
mov cx, [__0a98] mov cx, [last_valid_address]
subw r_cx, r_dx subw r_cx, r_dx
jz _trampoline_oom_1 jz _trampoline_oom_1
@ -494,7 +494,8 @@ __03ca:
std std
dec di dec di
mov cx, [__0a98] ; TODO: Why are we using last valid address as our loop counter?
mov cx, [last_valid_address]
repne scasb repne scasb
inc di inc di
inc di inc di
@ -1132,7 +1133,7 @@ __07d7:
mov ax, [__0a9a] mov ax, [__0a9a]
subw r_ax, r_dx subw r_ax, r_dx
addw r_ax, r_cx addw r_ax, r_cx
cmp ax, [__0a98] cmp ax, [last_valid_address]
jnb oom jnb oom
xchg ax, [__0a9a] xchg ax, [__0a9a]
@ -1183,7 +1184,7 @@ __082a:
movw r_si, r_cx movw r_si, r_cx
subw r_cx, r_di subw r_cx, r_di
inc cx inc cx
mov di, [__0a98] mov di, [last_valid_address]
std std
rep movsb rep movsb
@ -1240,7 +1241,7 @@ __088b:
mov di, [__0a92] mov di, [__0a92]
movw r_si, r_bp movw r_si, r_bp
inc si inc si
mov cx, [__0a98] mov cx, [last_valid_address]
subw r_cx, r_bp subw r_cx, r_bp
rep movsb rep movsb
dec di dec di
@ -1377,7 +1378,7 @@ __0a92 resw 1
__0a94 resw 1 __0a94 resw 1
__0a96 resw 1 __0a96 resw 1
__0a98 resw 1 last_valid_address resw 1 ; 0a98
__0a9a resw 1 __0a9a resw 1