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hub / github.com/GJDuck/e9patch / sendMovFromStack16ToR64

Function sendMovFromStack16ToR64

src/e9tool/e9codegen.cpp:1344–1368  ·  view source on GitHub ↗

* Send a `movswl offset(%rsp),%r64' instruction. */

Source from the content-addressed store, hash-verified

1342 * Send a `movswl offset(%rsp),%r64' instruction.
1343 */
1344void sendMovFromStack16ToR64(FILE *out, int32_t offset, int regno)
1345{
1346 const uint8_t REX[] =
1347 {0x48, 0x48, 0x48, 0x48, 0x4c, 0x4c, 0x00,
1348 0x48, 0x4c, 0x4c, 0x48, 0x48, 0x4c, 0x4c, 0x4c, 0x4c, 0x48};
1349 const uint8_t MODRM_0[] =
1350 {0x3c, 0x34, 0x14, 0x0c, 0x04, 0x0c, 0x00,
1351 0x04, 0x14, 0x1c, 0x1c, 0x2c, 0x24, 0x2c, 0x34, 0x3c, 0x24};
1352 const uint8_t MODRM_8[] =
1353 {0x7c, 0x74, 0x54, 0x4c, 0x44, 0x4c, 0x00,
1354 0x44, 0x54, 0x5c, 0x5c, 0x6c, 0x64, 0x6c, 0x74, 0x7c, 0x64};
1355 const uint8_t MODRM_32[] =
1356 {0xbc, 0xb4, 0x94, 0x8c, 0x84, 0x8c, 0x00,
1357 0x84, 0x94, 0x9c, 0x9c, 0xac, 0xa4, 0xac, 0xb4, 0xbc, 0xa4};
1358
1359 if (offset == 0)
1360 fprintf(out, "%u,%u,%u,%u,%u,",
1361 REX[regno], 0x0f, 0xbf, MODRM_0[regno], 0x24);
1362 else if (offset >= INT8_MIN && offset <= INT8_MAX)
1363 fprintf(out, "%u,%u,%u,%u,%u,{\"int8\":%d},",
1364 REX[regno], 0x0f, 0xbf, MODRM_8[regno], 0x24, offset);
1365 else
1366 fprintf(out, "%u,%u,%u,%u,%u,{\"int32\":%d},",
1367 REX[regno], 0x0f, 0xbf, MODRM_32[regno], 0x24, offset);
1368}
1369
1370/*
1371 * Send a `movzbl offset(%rsp),%r64' instruction.

Callers 2

sendLoadRegToArgFunction · 0.85
sendLoadArgumentMetadataFunction · 0.85

Calls 1

fprintfFunction · 0.50

Tested by

no test coverage detected