Old GCC didn't let you reference variable by
number if it is listed with a specific register
constraint, on the assumption you can just
use the register name explicitly.
Build fails with errors like this:
a.c:6: error: invalid 'asm': invalid operand code 'd'
To fix, let's just use %eax %al etc.
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
---
lib/x86/pci.c | 4 ++--
x86/s3.c | 4 ++--
x86/vmexit.c | 2 +-
3 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/lib/x86/pci.c b/lib/x86/pci.c
index f95cd88..08f7ebf 100644
--- a/lib/x86/pci.c
+++ b/lib/x86/pci.c
@@ -3,13 +3,13 @@
static void outl(unsigned short port, unsigned val)
{
- asm volatile("outl %d0, %w1" : : "a"(val), "Nd"(port));
+ asm volatile("outl %%eax, %w1" : : "a"(val), "Nd"(port));
}
static unsigned inl(unsigned short port)
{
unsigned data;
- asm volatile("inl %w1, %d0" : "=a"(data) : "Nd"(port));
+ asm volatile("inl %w1, %%eax" : "=a"(data) : "Nd"(port));
return data;
}
static uint32_t pci_config_read(pcidevaddr_t dev, uint8_t reg)
diff --git a/x86/s3.c b/x86/s3.c
index 1feb452..eeffa17 100644
--- a/x86/s3.c
+++ b/x86/s3.c
@@ -149,8 +149,8 @@ static inline int rtc_in(u8 reg)
static inline void rtc_out(u8 reg, u8 val)
{
- asm volatile("outb %b1, $0x70; mov %b2, %b1; outb %b1, $0x71"
- : "+a"(reg) : "0"(reg), "ri"(val));
+ asm volatile("outb %%al, $0x70; mov %b1, %%al; outb %%al, $0x71"
+ : "+a"(reg) : "ri"(val));
}
extern char resume_start, resume_end;
diff --git a/x86/vmexit.c b/x86/vmexit.c
index 3b945de..29bc582 100644
--- a/x86/vmexit.c
+++ b/x86/vmexit.c
@@ -26,7 +26,7 @@ static void outw(unsigned short port, unsigned val)
static void outl(unsigned short port, unsigned val)
{
- asm volatile("outl %d0, %w1" : : "a"(val), "Nd"(port));
+ asm volatile("outl %%eax, %w1" : : "a"(val), "Nd"(port));
}
static unsigned int inb(unsigned short port)
--
MST
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
