first commit

no_deps_version/Makefile

@@ -0,0 +1,11 @@
+all:
+	gcc -c gddr6_asm.s -o gddr6_asm.o
+	gcc gddr6_asm.o -o gddr6_asm
+	gcc -c gddr6.c -o gddr6.o
+	gcc gddr6.o -o gddr6
+
+clean:
+	rm -f *.o
+	rm -f gddr6_asm gddr6
+
+

no_deps_version/gddr6.c

@@ -0,0 +1,56 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+
+int main(int argc, char **argv) 
+{
+    int fd;
+    int map_size = 4096UL;
+    void *map_base, *virt_addr;
+    uint32_t read_result, base_offset, temp;
+    uint32_t bar = 0xFB000000;
+    uint32_t offset = bar + 0x0000E2A8; // GA102
+    //uint32_t offset = bar + 0x0000EE50; // GA104
+
+    char *MEM_RES = "\x2f\x64\x65\x76\x2f\x6d\x65\x6d";
+
+    while (1) 
+    {
+        if ((fd = open(MEM_RES, O_RDWR | O_SYNC)) == -1) 
+        {
+          printf("Can't read memory. Are you r00t?\n");
+          exit(-1);
+        }
+
+        base_offset = offset & ~(sysconf(_SC_PAGE_SIZE)-1);
+        map_base = mmap(0, map_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, base_offset);
+
+        if (!map_base) 
+        {
+          printf("Can't map memory. Are you r00t?\n");
+          exit(-1);
+        }
+
+        virt_addr = map_base + offset - base_offset;
+        read_result = *((uint32_t *) virt_addr);
+        temp = (read_result & 0x00000fff) / 0x20;
+        printf("\rGDDR6X VRAM Temp: %d°c", temp);
+        fflush(stdout);
+
+        if (munmap(map_base, map_size) == -1) 
+        {
+          printf("Can't unmap memory!\n");
+          exit(-1);
+        }
+
+        close(fd);
+        sleep(1);
+    }
+
+    return 0;
+} 

no_deps_version/gddr6_asm.s

@@ -0,0 +1,127 @@
+	.file	"gddr6.s"
+	.text
+	.section	.rodata
+.LC0:
+	.string	"/dev/mem"
+.LC1:
+	.string	"\rGDDR6 VRAM Temp: %d\302\260c"
+	.text
+	.globl	main
+	.type	main, @function
+main:
+.LFB6:
+	.cfi_startproc
+	endbr64
+	pushq	%rbp
+	.cfi_def_cfa_offset 16
+	.cfi_offset 6, -16
+	movq	%rsp, %rbp
+	.cfi_def_cfa_register 6
+	subq	$80, %rsp
+	movl	%edi, -68(%rbp)
+	movq	%rsi, -80(%rbp)
+	movl	$4096, -56(%rbp)
+	movl	$-83886080, -52(%rbp)
+	movl	-52(%rbp), %eax
+	addl	$58024, %eax
+	movl	%eax, -48(%rbp)
+	leaq	.LC0(%rip), %rax
+	movq	%rax, -24(%rbp)
+.L5:
+	movq	-24(%rbp), %rax
+	movl	$1052674, %esi
+	movq	%rax, %rdi
+	movl	$0, %eax
+	call	open@PLT
+	movl	%eax, -44(%rbp)
+	cmpl	$-1, -44(%rbp)
+	jne	.L2
+	movl	$-1, %edi
+	call	exit@PLT
+.L2:
+	movl	$30, %edi
+	call	sysconf@PLT
+	subl	$1, %eax
+	notl	%eax
+	movl	%eax, %edx
+	movl	-48(%rbp), %eax
+	andl	%edx, %eax
+	movl	%eax, -40(%rbp)
+	movl	-40(%rbp), %ecx
+	movl	-56(%rbp), %eax
+	cltq
+	movl	-44(%rbp), %edx
+	movq	%rcx, %r9
+	movl	%edx, %r8d
+	movl	$1, %ecx
+	movl	$3, %edx
+	movq	%rax, %rsi
+	movl	$0, %edi
+	call	mmap@PLT
+	movq	%rax, -16(%rbp)
+	cmpq	$0, -16(%rbp)
+	jne	.L3
+	movl	$-1, %edi
+	call	exit@PLT
+.L3:
+	movl	-48(%rbp), %edx
+	movl	-40(%rbp), %eax
+	subq	%rax, %rdx
+	movq	-16(%rbp), %rax
+	addq	%rdx, %rax
+	movq	%rax, -8(%rbp)
+	movq	-8(%rbp), %rax
+	movl	(%rax), %eax
+	movl	%eax, -36(%rbp)
+	movl	-36(%rbp), %eax
+	andl	$4095, %eax
+	movl	%eax, -32(%rbp)
+	movl	-32(%rbp), %eax
+	shrl	$5, %eax
+	movl	%eax, -28(%rbp)
+	movl	-28(%rbp), %eax
+	movl	%eax, %esi
+	leaq	.LC1(%rip), %rdi
+	movl	$0, %eax
+	call	printf@PLT
+	movq	stdout(%rip), %rax
+	movq	%rax, %rdi
+	call	fflush@PLT
+	movl	-56(%rbp), %eax
+	movslq	%eax, %rdx
+	movq	-16(%rbp), %rax
+	movq	%rdx, %rsi
+	movq	%rax, %rdi
+	call	munmap@PLT
+	cmpl	$-1, %eax
+	jne	.L4
+	movl	$-1, %edi
+	call	exit@PLT
+.L4:
+	movl	-44(%rbp), %eax
+	movl	%eax, %edi
+	call	close@PLT
+	movl	$1, %edi
+	call	sleep@PLT
+	jmp	.L5
+	.cfi_endproc
+.LFE6:
+	.size	main, .-main
+	.ident	"GCC: (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0"
+	.section	.note.GNU-stack,"",@progbits
+	.section	.note.gnu.property,"a"
+	.align 8
+	.long	 1f - 0f
+	.long	 4f - 1f
+	.long	 5
+0:
+	.string	 "GNU"
+1:
+	.align 8
+	.long	 0xc0000002
+	.long	 3f - 2f
+2:
+	.long	 0x3
+3:
+	.align 8
+4: