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On 7/16/14, 6:09 PM, sgundapa wrote: > I see a couple of issues here. > > If I include .S files for ARM, the –no-integrated-as path complains about > Assembler errors. > > The integrated-as path works fine though. > These are very likely just differences between the old ARM assembler syntax and the new 'Unified' syntax. Can you use an assembler that accepts UAL

...32_t *v) > +{ > + unsigned long tmp; > + int result; > + > + asm volatile("// atomic_inc\n" > +"1: ldxr %w0, [%3]\n" > +" add %w0, %w0, #1\n" > +" stxr %w1, %w0, [%3]\n" > +" cbnz %w1, 1b" > + : "=&r" (result), "=&r" (tmp), "+o" (v) > + : "r" (v) > + : "cc"); > +} > + > +static inline void atomic_dec(uint32_t *v) > +{ > + unsigned long tmp; > + int...

First off, Apologies for the massive patch series... This series boots a 32-bit dom0 kernel to a command prompt on an ARMv8 (AArch64) model. The kernel is the same one as I am currently using with the 32 bit hypervisor I haven''t yet tried starting a guest or anything super advanced like that ;-). Also there is not real support for 64-bit domains at all, although in one or two places I

This round implements all of the review comments from V2 and all patches are now acked. Unless there are any objections I intend to apply later this morning. Ian.

The current early-printk support for ARM is rather hard-coded, making it hard to add machines or tweak settings. This series slightly moves some code to gather UART settings in xen/arch/arm/Rules.mk instead of the actual .c files. Also it allows two different machines with different settings to share the same driver, which the last patch exploits to add support the Calxeda Midway hardware. This

The following patches shave some rough edges off the tools build system to allow cross compiling for at least arm32 and arm64 based on the Debian/Ubuntu multiarch infrastructure. They also add the necessary fixes to build for arm64 (which I have only tried cross, not native). I have posted some instructions on how to compile with these patches on the wiki:

...ze setjmp,.-setjmp + + .text + .balign 8 + .globl longjmp + .type longjmp, #function +longjmp: + ldp x19, x20, [x0, #0] + ldp x21, x22, [x0, #16] + ldp x23, x24, [x0, #32] + ldp x25, x26, [x0, #48] + ldp x27, x28, [x0, #64] + ldp x29, x30, [x0, #80] + ldr x2, [x0, #96] + mov sp, x2 + mov x0, x1 + cbnz x1, 1f + mov x0, #1 +1: + br x30 + .size longjmp,.-longjmp diff --git a/usr/klibc/arch/arm64/syscall.S b/usr/klibc/arch/arm64/syscall.S new file mode 100644 index 0000000..3ce91fb --- /dev/null +++ b/usr/klibc/arch/arm64/syscall.S @@ -0,0 +1,25 @@ +/* + * arch/arm64/syscall.S + * + * System call co...

...0, [x0, #0] + ldp x21, x22, [x0, #16] + ldp x23, x24, [x0, #32] + ldp x25, x26, [x0, #48] + ldp x27, x28, [x0, #64] + ldp x29, x30, [x0, #80] + ldr x2, [x0, #96] + ldp d8, d9, [x0, #104] + ldp d10, d11, [x0, #120] + ldp d12, d13, [x0, #136] + ldp d14, d15, [x0, #152] + mov sp, x2 + mov x0, x1 + cbnz x1, 1f + mov x0, #1 +1: + br x30 + .size longjmp,.-longjmp diff --git a/usr/klibc/arch/arm64/syscall.S b/usr/klibc/arch/arm64/syscall.S new file mode 100644 index 0000000..3ce91fb --- /dev/null +++ b/usr/klibc/arch/arm64/syscall.S @@ -0,0 +1,25 @@ +/* + * arch/arm64/syscall.S + * + * System call co...

...#240] mov x0, #0 // set the return value of setjmp br x30 .size setjmp,.-setjmp @@ -53,6 +55,8 @@ longjmp: ldp d10, d11, [x0, #192] ldp d12, d13, [x0, #208] ldp d14, d15, [x0, #224] + ldr x2, [x0, #240] + mov sp, x2 mov x0, x1 cbnz x1, 1f // if x1 is not zero, branch to 1: mov x0, #1 diff --git a/usr/klibc/arch/aarch64/symlink.c b/usr/klibc/arch/aarch64/symlink.c index 67d56bb..b66e8ab 100644 --- a/usr/klibc/arch/aarch64/symlink.c +++ b/usr/klibc/arch/aarch64/symlink.c @@ -3,5 +3,5 @@ int symlink (const char *oldpath,...

Hello, Here is V2 of the arm64 support for klibc patch set. Notable changes since the original series: * fp regs dropped from setjmp/longjmp * chmod, lstat and stat re-implemented with *at functions. * open64 merged into open. As with the original, this series is to be applied against the latest klibc, just after 25a66fa README.klibc: update build information V2 has been tested on x86_64

Hello, This series introduces arm64 support to klibc. I've rebased the work from Neil Williams and Anil Singhar into the following three patches. Most of the code changes are due to new syscall implementations being needed for arm64 as a only a minimal set of syscalls are defined in the arm64 kernel. This series is to be applied against the latest klibc, just after 25a66fa README.klibc: