[WOW64] Refactored host extention detection and added preliminary support for WowBox64 (#2752)

1 files changed, 0 insertions, 126 deletions

diff --git a/src/rv64detect.c b/src/rv64detect.c
deleted file mode 100644
index 3cce199e..00000000
--- a/src/rv64detect.c
+++ /dev/null
@@ -1,126 +0,0 @@
-#include <string.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <signal.h>
-#include <sys/mman.h>
-#include <setjmp.h>
-
-#include "debug.h"
-#include "dynarec/rv64/rv64_emitter.h"
-
-// Detect RV64 extensions, by executing on of the opcode with a SIGILL signal handler
-
-static sigjmp_buf sigbuf = {0};
-typedef int (*iFiip_t)(int, int, void*);
-static void detect_sigill(int sig)
-{
-    siglongjmp(sigbuf, 1);
-}
-
-static int Check(void* block)
-{
-    static uint64_t buf[2] = {0};
-    // Clear instruction cache
-    __clear_cache(block, block+box64_pagesize);
-    // Setup SIGILL signal handler
-    __sighandler_t old = signal(SIGILL, detect_sigill);
-    if(sigsetjmp(sigbuf, 1)) {
-        // didn't work, extension not present
-        signal(SIGILL, old);
-        return 0;
-    }
-    int result = ((iFiip_t)block)(0, 1, buf);
-    if (result != 42) {
-        // wrong result, extension not present
-        signal(SIGILL, old);
-        return 0;
-    }
-    // done...
-    signal(SIGILL, old);
-    return 1;
-}
-
-void RV64_Detect_Function()
-{
-    // Alloc memory to execute stuffs
-    void* my_block = mmap(NULL, box64_pagesize, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
-    if(my_block==(void*)-1) {
-        return;
-    }
-    uint32_t* block;
-    #define EMIT(A) *block = (A); ++block
-
-
-    // THead vendor extensions
-    block = (uint32_t*)my_block;
-    ADDI(A0, xZR, 40);
-    ADDI(A1, xZR, 1);
-    TH_ADDSL(A0, A0, A1, 1);
-    BR(xRA);
-    cpuext.xtheadba
-        = cpuext.xtheadbb
-        = cpuext.xtheadbs
-        = cpuext.xtheadcondmov
-        = cpuext.xtheadmemidx
-        = cpuext.xtheadmempair
-        = cpuext.xtheadfmemidx
-        = cpuext.xtheadmac
-        = cpuext.xtheadfmv = Check(my_block);
-
-    // Official extensions
-
-    if (!cpuext.xtheadba) {
-        // Test Zba with ADDUW
-        block = (uint32_t*)my_block;
-        ADDUW(A0, A0, A1);
-        ADDI(A0, xZR, 42);
-        BR(xRA);
-        cpuext.zba = Check(my_block);
-        // Test Zbb with ANDN
-        block = (uint32_t*)my_block;
-        ANDN(A0, A0, A1);
-        ADDI(A0, xZR, 42);
-        BR(xRA);
-        cpuext.zbb = Check(my_block);
-        // Test Zbc with CLMUL
-        block = (uint32_t*)my_block;
-        CLMUL(A0, A0, A1);
-        ADDI(A0, xZR, 42);
-        BR(xRA);
-        cpuext.zbc = Check(my_block);
-        // Test Zbs with BCLR
-        block = (uint32_t*)my_block;
-        BCLR(A0, A0, A1);
-        ADDI(A0, xZR, 42);
-        BR(xRA);
-        cpuext.zbs = Check(my_block);
-    }
-
-    block = (uint32_t*)my_block;
-    CSRRS(xZR, xZR, 0xc22 /* vlenb */);
-    ADDI(A0, xZR, 42);
-    BR(xRA);
-    cpuext.vector = Check(my_block);
-
-    if (cpuext.vector) {
-        block = (uint32_t*)my_block;
-        CSRRS(xZR, xZR, 0x00f /* vcsr */); // vcsr does not exists in xtheadvector
-        ADDI(A0, xZR, 42);
-        BR(xRA);
-        cpuext.xtheadvector = !Check(my_block);
-    }
-
-    if (cpuext.vector) {
-        int vlenb = 0;
-        asm volatile("csrr %0, 0xc22" : "=r"(vlenb));
-        cpuext.vlen = vlenb;
-        if (vlenb < 16) {
-            // we need vlen >= 128
-            cpuext.vector = 0;
-        }
-    }
-
-    // Finish
-    // Free the memory my_block
-    munmap(my_block, box64_pagesize);
-}