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https://github.com/geode-sdk/geode.git
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88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
#include "platform_macro.h"
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#if defined(TARGET_ARCH_ARM)
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#include <string.h>
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#include "MemoryAllocator/CodeBuffer/code-buffer-arm.h"
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arm_inst_t CodeBuffer::LoadARMInst(int offset) {
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return *reinterpret_cast<arm_inst_t *>(buffer + offset);
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}
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thumb1_inst_t CodeBuffer::LoadThumb1Inst(int offset) {
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return *reinterpret_cast<thumb1_inst_t *>(buffer + offset);
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};
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thumb2_inst_t CodeBuffer::LoadThumb2Inst(int offset) {
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return *reinterpret_cast<thumb2_inst_t *>(buffer + offset);
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};
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void CodeBuffer::RewriteAddr(int offset, addr32_t addr) {
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memcpy(buffer + offset, &addr, sizeof(addr));
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#if 0
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// SIGBUS (signal SIGBUS: illegal alignment)
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*reinterpret_cast<addr32_t *>(buffer + offset) = addr;
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#endif
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return;
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}
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void CodeBuffer::RewriteARMInst(int offset, arm_inst_t instr) {
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*reinterpret_cast<arm_inst_t *>(buffer + offset) = instr;
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return;
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}
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void CodeBuffer::RewriteThumb1Inst(int offset, thumb1_inst_t instr) {
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*reinterpret_cast<thumb1_inst_t *>(buffer + offset) = instr;
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return;
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}
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void CodeBuffer::RewriteThumb2Inst(int offset, thumb2_inst_t instr) {
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memcpy(buffer + offset, &instr, sizeof(instr));
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#if 0
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// SIGBUS (signal SIGBUS: illegal alignment)
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*reinterpret_cast<thumb2_inst_t *>(buffer + offset) = instr;
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#endif
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return;
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}
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void CodeBuffer::EmitARMInst(arm_inst_t instr) {
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DLOG(0, "[code buffer] EmitARMInst from arm32 with %x, cursor %x", instr, buffer_cursor);
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ensureCapacity(getSize() + sizeof(arm_inst_t));
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*reinterpret_cast<arm_inst_t *>(buffer_cursor) = instr;
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buffer_cursor += sizeof(arm_inst_t);
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return;
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}
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void CodeBuffer::EmitThumb1Inst(thumb1_inst_t instr) {
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DLOG(0, "[code buffer] EmitThumb1Inst from arm32 with %x, cursor %x", instr, buffer_cursor);
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ensureCapacity(getSize() + sizeof(thumb1_inst_t));
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*reinterpret_cast<thumb1_inst_t *>(buffer_cursor) = instr;
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buffer_cursor += sizeof(thumb1_inst_t);
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return;
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}
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void CodeBuffer::EmitThumb2Inst(thumb2_inst_t instr) {
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DLOG(0, "[code buffer] EmitThumb2Inst from arm32 with %x, cursor %x", instr, buffer_cursor);
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ensureCapacity(getSize() + sizeof(thumb2_inst_t));
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memcpy(buffer_cursor, &instr, sizeof(instr));
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#if 0
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// SIGBUS (signal SIGBUS: illegal alignment)
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*reinterpret_cast<thumb2_inst_t *>(buffer_cursor) = instr;
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#endif
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buffer_cursor += sizeof(thumb2_inst_t);
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return;
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}
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void CodeBuffer::Emit32(int32_t data) {
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DLOG(0, "[code buffer] Emit32 from arm32 with %x, cursor %x", data, buffer_cursor);
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ensureCapacity(getSize() + sizeof(int32_t));
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memcpy(buffer_cursor, &data, sizeof(data));
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#if 0
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// SIGBUS (signal SIGBUS: illegal alignment)
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*reinterpret_cast<int32_t *>(buffer_cursor) = data;
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#endif
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buffer_cursor += sizeof(int32_t);
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return;
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}
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#endif
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