add registers.h

diff --git a/libust/registers.h b/libust/registers.h
new file mode 100644 (file)
index 0000000..df51dc2
--- /dev/null
+++ b/libust/registers.h
@@ -0,0 +1,106 @@
+#ifndef UST_REGISTERS_H
+#define UST_REGISTERS_H
+
+#include <stddef.h>
+
+#ifdef X86_32
+
+struct registers {
+       long eax;
+       long ebx;
+       long ecx;
+       long edx;
+       long ebp;
+       long esp;
+       long esi;
+       long edi;
+       int  xds;
+       int  xes;
+       int  xfs;
+       int  xgs;
+       long eip;
+       int  xcs;
+       long eflags;
+       int  xss;
+};
+
+static inline save_registers(struct registers *regs)
+{
+}
+
+#else
+
+struct registers {
+       unsigned long rax;
+       unsigned long rbx;
+       unsigned long rcx;
+       unsigned long rdx;
+       unsigned long rbp;
+       unsigned long rsp;
+       unsigned long rsi;
+       unsigned long rdi;
+       unsigned long r8;
+       unsigned long r9;
+       unsigned long r10;
+       unsigned long r11;
+       unsigned long r12;
+       unsigned long r13;
+       unsigned long r14;
+       unsigned long r15;
+       unsigned long rip;
+       int cs;
+       int ss;
+};
+
+static inline save_registers(struct registers *regs)
+{
+       asm ("movq %%rax,%c[rax_off](%[regs])\n\t"
+/*          "movq %%rax,%[rax_el]\n\t"
+            "movq %%rbx,%[rbx_el]\n\t"
+            "movq %%rcx,%[rcx_el]\n\t"
+            "movq %%rdx,%[rdx_el]\n\t"
+            "movq %%rbp,%[rbp_el]\n\t"
+            "movq %%rsp,%[rsp_el]\n\t"
+            "movq %%rsi,%[rsi_el]\n\t"
+            "movq %%rdi,%[rdi_el]\n\t"
+            "movq %%r8, %[r8_el]\n\t"
+            "movq %%r9, %[r9_el]\n\t"
+            "movq %%r10,%[r10_el]\n\t"
+            "movq %%r11,%[r11_el]\n\t"
+            "movq %%r12,%[r12_el]\n\t"
+            "movq %%r13,%[r13_el]\n\t"
+            "movq %%r14,%[r14_el]\n\t"
+            "movq %%r15,%[r15_el]\n\t"
+            "movw %%cs,%[cs_el]\n\t"
+            "movw %%ss,%[ss_el]\n\t"
+            "call getip\n\t"
+            "getip:\n\t"
+            "popq %[rip_el]\n\t" */
+       : /* do output regs */
+       : [rax_off] "i" (offsetof(struct registers, rax)),
+         [regs] "r" (regs)
+/*     : [rax_el] "m" (regs->rax),
+         [rbx_el] "m" (regs->rbx),
+         [rcx_el] "m" (regs->rcx),
+         [rdx_el] "m" (regs->rdx),
+         [rbp_el] "m" (regs->rbp),
+         [rsp_el] "m" (regs->rsp),
+         [rsi_el] "m" (regs->rsi),
+         [rdi_el] "m" (regs->rdi),
+         [r8_el] "m" (regs->r8),
+         [r9_el] "m" (regs->r9),
+         [r10_el] "m" (regs->r10),
+         [r11_el] "m" (regs->r11),
+         [r12_el] "m" (regs->r12),
+         [r13_el] "m" (regs->r13),
+         [r14_el] "m" (regs->r14),
+         [r15_el] "m" (regs->r15),
+         [cs_el] "m" (regs->cs),
+         [ss_el] "m" (regs->ss),
+         [rip_el] "m" (regs->rip)*/
+       );
+}
+
+#endif
+
+#endif /* UST_REGISTERS_H */