UEFI loads EFI applications to dynamic runtime addresses, so it requires
all applications to be compiled as PIC (position independent code).
The new introduced single-step #DB tests series bring some compile time
absolute address, fixed it with RIP relative address.
Fixes: 9734b4236294 ("x86/debug: Add framework for single-step #DB tests")
Fixes: 6bfb9572ec04 ("x86/debug: Test IN instead of RDMSR for single-step #DB emulation test")
Fixes: bc0dd8bdc627 ("x86/debug: Add single-step #DB + STI/MOVSS blocking tests")
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@xxxxxxxxx>
---
x86/debug.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/x86/debug.c b/x86/debug.c
index 20ff8ebacc16..13d1f9629e1d 100644
--- a/x86/debug.c
+++ b/x86/debug.c
@@ -145,7 +145,7 @@ static unsigned long singlestep_basic(void)
"and $~(1<<8),%%rax\n\t"
"1:push %%rax\n\t"
"popf\n\t"
- "lea 1b, %0\n\t"
+ "lea 1b(%%rip), %0\n\t"
: "=r" (start) : : "rax"
);
return start;
@@ -186,7 +186,7 @@ static unsigned long singlestep_emulated_instructions(void)
"movl $0x3fd, %%edx\n\t"
"inb %%dx, %%al\n\t"
"popf\n\t"
- "lea 1b,%0\n\t"
+ "lea 1b(%%rip),%0\n\t"
: "=r" (start) : : "rax", "ebx", "ecx", "edx"
);
return start;
@@ -223,7 +223,7 @@ static unsigned long singlestep_with_sti_blocking(void)
"1:and $~(1<<8),%%rax\n\t"
"push %%rax\n\t"
"popf\n\t"
- "lea 1b,%0\n\t"
+ "lea 1b(%%rip),%0\n\t"
: "=r" (start_rip) : : "rax"
);
return start_rip;
@@ -259,7 +259,7 @@ static unsigned long singlestep_with_movss_blocking(void)
"and $~(1<<8),%%rax\n\t"
"1: push %%rax\n\t"
"popf\n\t"
- "lea 1b,%0\n\t"
+ "lea 1b(%%rip),%0\n\t"
: "=r" (start_rip) : : "rax"
);
return start_rip;
@@ -302,7 +302,7 @@ static unsigned long singlestep_with_movss_blocking_and_icebp(void)
"1:and $~(1<<8),%%rax\n\t"
"push %%rax\n\t"
"popf\n\t"
- "lea 1b,%0\n\t"
+ "lea 1b(%%rip),%0\n\t"
: "=r" (start) : : "rax"
);
return start;
@@ -346,7 +346,7 @@ static unsigned long singlestep_with_movss_blocking_and_dr7_gd(void)
"and $~(1<<8),%%rax\n\t"
"push %%rax\n\t"
"popf\n\t"
- "lea 1b,%0\n\t"
+ "lea 1b(%%rip),%0\n\t"
: "=r" (start_rip) : : "rax"
);
return start_rip;
--
2.25.1
