diff options
| author | Jan Tuomi <jan@jantuomi.fi> | 2024-04-14 17:20:34 +0300 |
|---|---|---|
| committer | Jan Tuomi <jan@jantuomi.fi> | 2024-04-14 17:20:34 +0300 |
| commit | 367813568d723e598a38a7327fc2bb4abcfc598c (patch) | |
| tree | f4c72a5e3f3992d8b43ed0a5e695c8e9aa790ecf /atk16_asm/builtin_asm | |
| parent | 2f69a9ac8c2de9d37248baa5c774c2813f070ba0 (diff) | |
Add data_segment feature, refactor
Diffstat (limited to 'atk16_asm/builtin_asm')
| -rw-r--r-- | atk16_asm/builtin_asm/bootstrap.atk16 | 18 | ||||
| -rw-r--r-- | atk16_asm/builtin_asm/std_bump_alloc.atk16 | 6 | ||||
| -rw-r--r-- | atk16_asm/builtin_asm/std_math.atk16 | 6 |
3 files changed, 15 insertions, 15 deletions
diff --git a/atk16_asm/builtin_asm/bootstrap.atk16 b/atk16_asm/builtin_asm/bootstrap.atk16 index 28d8aa1..b3b4254 100644 --- a/atk16_asm/builtin_asm/bootstrap.atk16 +++ b/atk16_asm/builtin_asm/bootstrap.atk16 @@ -31,10 +31,10 @@ @let vt_text_mem 0x19 ; Text memory buffer address @address vector_table - hlt_isr ; 0x10 - hlt_isr ; 0x11 - hlt_isr ; 0x12 - hlt_isr ; 0x13 + no_op_isr ; 0x10 + no_op_isr ; 0x11 + no_op_isr ; 0x12 + no_op_isr ; 0x13 stack_segment ; 0x14 terminal_addr ; 0x15 keyboard_addr ; 0x16 @@ -42,9 +42,13 @@ sprite_mem ; 0x18 text_mem ; 0x19 -@label hlt_isr - ldi 0x55 RE - hlt +@label no_op_isr + rti + +; Define data segment location to this address +; Programs can use `@data label value` to inject data here +@label data_segment +@data_segment ; Example ISR for keyboard to terminal ; @label keyboard_to_terminal_isr diff --git a/atk16_asm/builtin_asm/std_bump_alloc.atk16 b/atk16_asm/builtin_asm/std_bump_alloc.atk16 index 1d87435..32516bc 100644 --- a/atk16_asm/builtin_asm/std_bump_alloc.atk16 +++ b/atk16_asm/builtin_asm/std_bump_alloc.atk16 @@ -21,10 +21,8 @@ ; The alloc_next value is a pointer to the next free word in the heap. ; It is stored in the first word of the heap. -@label bump_next_p - heap_segment -@label bump_arena_start - ${heap_segment - 1} +@data bump_next_p heap_segment +@data bump_arena_start ${heap_segment - 1} @label bump_reset ; reset the heap to its initial state (zero allocated blocks) diff --git a/atk16_asm/builtin_asm/std_math.atk16 b/atk16_asm/builtin_asm/std_math.atk16 index 58b9cdb..6544b32 100644 --- a/atk16_asm/builtin_asm/std_math.atk16 +++ b/atk16_asm/builtin_asm/std_math.atk16 @@ -1,7 +1,5 @@ -@label mul_sign_mask - ${2 ** 15} -@label mul_not_mask - 0xFFFF +@data mul_sign_mask ${2 ** 15} +@data mul_not_mask 0xFFFF @label mul ; multiply a signed (a) and a signed (b) |