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90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
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#include "platform_macro.h"
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#if defined(TARGET_ARCH_ARM)
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#include "dobby_internal.h"
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#include "core/modules/assembler/assembler-arm.h"
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#include "TrampolineBridge/ClosureTrampolineBridge/common-bridge-handler.h"
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using namespace zz;
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using namespace zz::arm;
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static void *closure_bridge = NULL;
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void *get_closure_bridge() {
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// if already initialized, just return.
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if (closure_bridge)
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return closure_bridge;
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// check if enable the inline-assembly closure_bridge_template
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#if ENABLE_CLOSURE_BRIDGE_TEMPLATE
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extern void closure_bridge_tempate();
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closure_bridge = closure_bridge_template;
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// otherwise, use the Assembler build the closure_bridge
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#else
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#define _ turbo_assembler_.
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TurboAssembler turbo_assembler_(0);
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_ sub(sp, sp, Operand(14 * 4));
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_ str(lr, MemOperand(sp, 13 * 4));
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_ str(r12, MemOperand(sp, 12 * 4));
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_ str(r11, MemOperand(sp, 11 * 4));
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_ str(r10, MemOperand(sp, 10 * 4));
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_ str(r9, MemOperand(sp, 9 * 4));
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_ str(r8, MemOperand(sp, 8 * 4));
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_ str(r7, MemOperand(sp, 7 * 4));
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_ str(r6, MemOperand(sp, 6 * 4));
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_ str(r5, MemOperand(sp, 5 * 4));
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_ str(r4, MemOperand(sp, 4 * 4));
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_ str(r3, MemOperand(sp, 3 * 4));
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_ str(r2, MemOperand(sp, 2 * 4));
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_ str(r1, MemOperand(sp, 1 * 4));
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_ str(r0, MemOperand(sp, 0 * 4));
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// store sp
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_ add(r0, sp, Operand(14 * 4));
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_ sub(sp, sp, Operand(8));
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_ str(r0, MemOperand(sp, 4));
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// stack align
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_ sub(sp, sp, Operand(8));
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_ mov(r0, Operand(sp));
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_ mov(r1, Operand(r12));
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_ CallFunction(ExternalReference((void *)intercept_routing_common_bridge_handler));
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// stack align
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_ add(sp, sp, Operand(8));
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// restore sp placeholder stack
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_ add(sp, sp, Operand(8));
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_ ldr(r0, MemOperand(sp, 4, PostIndex));
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_ ldr(r1, MemOperand(sp, 4, PostIndex));
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_ ldr(r2, MemOperand(sp, 4, PostIndex));
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_ ldr(r3, MemOperand(sp, 4, PostIndex));
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_ ldr(r4, MemOperand(sp, 4, PostIndex));
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_ ldr(r5, MemOperand(sp, 4, PostIndex));
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_ ldr(r6, MemOperand(sp, 4, PostIndex));
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_ ldr(r7, MemOperand(sp, 4, PostIndex));
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_ ldr(r8, MemOperand(sp, 4, PostIndex));
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_ ldr(r9, MemOperand(sp, 4, PostIndex));
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_ ldr(r10, MemOperand(sp, 4, PostIndex));
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_ ldr(r11, MemOperand(sp, 4, PostIndex));
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_ ldr(r12, MemOperand(sp, 4, PostIndex));
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_ ldr(lr, MemOperand(sp, 4, PostIndex));
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// auto switch A32 & T32 with `least significant bit`, refer `docs/A32_T32_states_switch.md`
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_ mov(pc, Operand(r12));
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AssemblyCodeChunk *code = AssemblyCodeBuilder::FinalizeFromTurboAssembler(&turbo_assembler_);
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closure_bridge = (void *)code->raw_instruction_start();
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DLOG(0, "[closure bridge] Build the closure bridge at %p", closure_bridge);
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#endif
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return (void *)closure_bridge;
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}
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#endif
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