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Diffstat (limited to 'unsqrm.s')
| -rw-r--r-- | unsqrm.s | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/unsqrm.s b/unsqrm.s new file mode 100644 index 0000000..8a2797c --- /dev/null +++ b/unsqrm.s @@ -0,0 +1,94 @@ +; This source code in this file is licensed to You by Castle Technology +; Limited ("Castle") and its licensors on contractual terms and conditions +; ("Licence") which entitle you freely to modify and/or to distribute this +; source code subject to Your compliance with the terms of the Licence. +; +; This source code has been made available to You without any warranties +; whatsoever. Consequently, Your use, modification and distribution of this +; source code is entirely at Your own risk and neither Castle, its licensors +; nor any other person who has contributed to this source code shall be +; liable to You for any loss or damage which You may suffer as a result of +; Your use, modification or distribution of this source code. +; +; Full details of Your rights and obligations are set out in the Licence. +; You should have received a copy of the Licence with this source code file. +; If You have not received a copy, the text of the Licence is available +; online at www.castle-technology.co.uk/riscosbaselicence.htm +; +r0 RN 0 +r1 RN 1 +r2 RN 2 +r3 RN 3 +r4 RN 4 +r5 RN 5 +r6 RN 6 +r12 RN 12 +lr RN 14 +pc RN 15 + +OS_GetEnv EQU &10 +OS_Exit EQU &11 +XOS_Module EQU &2001e +OS_Module EQU &1e +OS_GenerateError EQU &2b +OS_ChangeEnvironment EQU &40 +OS_ReadDefaultHandler EQU &55 + +XWimp_SlotSize EQU &600ec + +n_module_run EQU 2 +n_module_load EQU 11 + +n_upcall_h EQU 16 + +o_run_entry EQU &00 +o_title_entry EQU &10 + + EXPORT unsqueeze_base + EXPORT unsqueeze_end + EXPORT unsqueeze_limit + + AREA unsqueeze, CODE, READONLY + +unsqueeze_base MOV r0, r0 + MOV r0, #-1 + MOV r1, #-1 + SWI XWimp_SlotSize + MOV r6, #0 + MOVVC r6, r0 + ADR r0, unsqueeze_end + LDR r1, [r0], #4 + ADD r0, r0, r1 + SUB r0, r0, #&8000 + MOV r1, #-1 + SWI XWimp_SlotSize + MOV r0, #n_upcall_h + ADR r1, upcall_handler + SWI OS_ChangeEnvironment + ADR r1, unsqueeze_end + LDR r2, [r1], #4 + MOV r0, #n_module_load + SWI XOS_Module + MOV r5, r0 + MOV r0, #n_upcall_h + SWI OS_ReadDefaultHandler + SWI OS_ChangeEnvironment + MOVS r0, r6 + MOVNE r1, #-1 + SWINE XWimp_SlotSize + MOV r0, r5 + CMP r0, #n_module_load + SWINE OS_GenerateError + SWI OS_Exit + +upcall_handler SUB r12, r0, #256 + CMP r12, #1 + MOVEQ r0, #0 + MOV pc, lr + +unsqueeze_end DCD 0 + +unsqueeze_limit +module_start + + END |