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comparison m68k_core_x86.c @ 2420:1fba97414ba6

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Properly handle stack alignment in m68k breakpoint implementation
author Michael Pavone <pavone@retrodev.com>
date Fri, 19 Jan 2024 22:30:25 -0800
parents bf4f1a8d1d48
children 4aef84fbe2e2
comparison
equal deleted inserted replaced
2419:0871f555eff6 2420:1fba97414ba6
2579 native.stack_off = 0; 2579 native.stack_off = 0;
2580 code_ptr start_native = native.cur; 2580 code_ptr start_native = native.cur;
2581 mov_ir(&native, address, opts->gen.scratch1, SZ_D); 2581 mov_ir(&native, address, opts->gen.scratch1, SZ_D);
2582 2582
2583 2583
2584 call(&native, opts->bp_stub); 2584 call_noalign(&native, opts->bp_stub);
2585 } 2585 }
2586 2586
2587 void init_m68k_opts(m68k_options * opts, memmap_chunk * memmap, uint32_t num_chunks, uint32_t clock_divider, sync_fun sync_components, int_ack_fun int_ack) 2587 void init_m68k_opts(m68k_options * opts, memmap_chunk * memmap, uint32_t num_chunks, uint32_t clock_divider, sync_fun sync_components, int_ack_fun int_ack)
2588 { 2588 {
2589 memset(opts, 0, sizeof(*opts)); 2589 memset(opts, 0, sizeof(*opts));
3275 code->cur = opts->bp_stub; 3275 code->cur = opts->bp_stub;
3276 code->stack_off = tmp_stack_off; 3276 code->stack_off = tmp_stack_off;
3277 opts->prologue_start = *opts->bp_stub; 3277 opts->prologue_start = *opts->bp_stub;
3278 //Calculate length of patch 3278 //Calculate length of patch
3279 mov_ir(code, 0x1234, opts->gen.scratch1, SZ_D); 3279 mov_ir(code, 0x1234, opts->gen.scratch1, SZ_D);
3280 call(code, opts->bp_stub); 3280 call_noalign(code, opts->bp_stub);
3281 int patch_size = code->cur - opts->bp_stub; 3281 int patch_size = code->cur - opts->bp_stub;
3282 code->cur = opts->bp_stub; 3282 code->cur = opts->bp_stub;
3283 code->stack_off = tmp_stack_off; 3283 code->stack_off = tmp_stack_off + sizeof(void*);
3284 3284
3285 //Save context and call breakpoint handler 3285 //Save context and call breakpoint handler
3286 call(code, opts->gen.save_context); 3286 call(code, opts->gen.save_context);
3287 push_r(code, opts->gen.scratch1); 3287 push_r(code, opts->gen.scratch1);
3288 call_args_abi(code, (code_ptr)m68k_bp_dispatcher, 2, opts->gen.context_reg, opts->gen.scratch1); 3288 call_args_abi(code, (code_ptr)m68k_bp_dispatcher, 2, opts->gen.context_reg, opts->gen.scratch1);