akkartik
/
mu
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

grow a few buffers until shell/ loads

This commit is contained in:
Kartik K. Agaram 2021-05-15 07:49:12 -07:00
parent a577c7fcb0
commit c26aef11b7
3 changed files with 11 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
317abort.subx
View File

@ -27,10 +27,10 @@ dump-call-stack:
51/push-ecx
52/push-edx
53/push-ebx
# var labels/edx: (addr stream {start-address, label-slice} 0x1000)
# var labels/edx: (addr stream {start-address, label-slice} 0x4000)
# start addresses are in ascending order
81 5/subop/subtract %esp 0xc000/imm32
68/push 0xc000/imm32
81 5/subop/subtract %esp 0x30000/imm32 # 0x4000 labels * 12 bytes per label
68/push 0x30000/imm32
68/push 0/imm32/read
68/push 0/imm32/write
89/<- %edx 4/r32/esp
@ -81,8 +81,11 @@ load-debug-symbols: # labels: (addr stream {start-address, label-slice})
c7 0/subop/copy *ecx 0/imm32 # write index
c7 0/subop/copy *(ecx+4) 0/imm32 # read index
c7 0/subop/copy *(ecx+8) 0x01000000/imm32 # stream capacity = 16MB
# load 0x100 sectors starting from sector 10080 = 0x2760
# load 0x400 sectors starting from sector 10080 = 0x2760
(load-sectors Primary-bus-primary-drive 0x2760 0x100 %ecx)
(load-sectors Primary-bus-primary-drive 0x2860 0x100 %ecx)
(load-sectors Primary-bus-primary-drive 0x2960 0x100 %ecx)
(load-sectors Primary-bus-primary-drive 0x2a60 0x100 %ecx)
# - parse pointers to portions of this stream into labels
# var curr/ecx: (addr byte) = s->data
81 0/subop/add %ecx 0xc/imm32

4
translate_subx
View File

@ -43,13 +43,13 @@ fi
# Latter half of disk is for debug info.
dd if=labels of=code.img seek=10080 conv=notrunc # keep this sync'd with abort.subx
if [ `stat --printf="%s" labels` -ge 131072 ] # 256 sectors * 512 bytes per sector, the most an ATA drive can read in a single command
if [ `stat --printf="%s" labels` -ge 524288 ] # 4 reads * 256 sectors * 512 bytes per sector
then
echo "labels won't all be loaded on abort"
exit 1
fi
if [ `wc -l < labels` -gt 4096 ] # 0x1000 stream capacity in abort.subx
if [ `wc -l < labels` -gt 16384 ] # 0x4000 stream capacity in abort.subx
then
echo "abort will go into infinite regress"
exit 1

4
translate_subx_emulated
View File

@ -47,13 +47,13 @@ fi
# Latter half of disk is for debug info.
dd if=labels of=code.img seek=10080 conv=notrunc # keep this sync'd with abort.subx
if [ `stat --printf="%s" labels` -ge 131072 ] # 256 sectors * 512 bytes per sector, the most an ATA drive can read in a single command
if [ `stat --printf="%s" labels` -ge 524288 ] # 4 reads * 256 sectors * 512 bytes per sector
then
echo "labels won't all be loaded on abort"
exit 1
fi
if [ `wc -l < labels` -gt 4096 ] # 0x1000 stream capacity in abort.subx
if [ `wc -l < labels` -gt 16384 ] # 0x4000 stream capacity in abort.subx
then
echo "abort will go into infinite regress"
exit 1