[patch] Use gen purpose r8 rather than rbp on x86_64

silly-coder-rbp-is-for-stacks.patch (text/plain), 930 bytes, created by Anthony Basile on 2015-02-13 13:40:28 UTC

--- vdc.cpp.orig	2015-02-13 08:35:08.490915522 -0500
+++ vdc.cpp	2015-02-13 08:39:08.597898884 -0500
@@ -1040,7 +1040,7 @@
 {
  // rdx: bg_linebuf
  // rsi: spr_linebuf
- // rbp: vce.color_table_cache
+ // r8: vce.color_table_cache
  // rdi: target
  // rcx: count
 
@@ -1051,7 +1051,7 @@
  asm volatile(
 	"push %%rbx\n\t"
 
-	"movq %%rax, %%rbp\n\t"
+	"movq %%rax, %%r8\n\t"
 	"negq %%rcx\n\t"
 	"xorq %%rax, %%rax\n\t"
 	"xorq %%rbx, %%rbx\n\t"
@@ -1066,7 +1066,7 @@
 	"cmovbe %%ebx, %%eax\n\t"
         "andl $511, %%eax\n\t"
 
-	"movl (%%rbp, %%rax, 4), %%ebx\n\t"
+	"movl (%%r8, %%rax, 4), %%ebx\n\t"
 	"movl %%ebx, (%%rdi, %%rcx, 4)\n\t"
 
         "addq $1, %%rcx\n\t"	
@@ -1075,7 +1075,7 @@
 	"pop %%rbx\n\t"
  : "=c" (dummy), "=a" (dummy)
  : "d" (bg_linebuf + count), "S" (spr_linebuf + count), "D" (target + count), "c" (count), "a" (vce.color_table_cache)
- : "memory", "cc", "rbp"
+ : "memory", "cc", "r8"
  );
 }