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xenctx: move all globals into struct xenctx

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Move all globals used for options and libxc data into a new struct xenctx.
This is used in subsequent changes.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Committed-by: Ian Jackson <ian.jackson.citrix.com>
This commit is contained in:
Olaf Hering committed 2011-06-17 14:10:18 +02:00
1 parent 8c779c0f47
commit 79a7f14f57
1 file changed
+39 -37
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tools/xentrace/xenctx.c
+39 -37
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@@ -29,11 +29,14 @@
#include <xen/foreign/x86_64.h>
#include <xen/hvm/save.h>
xc_interface *xc_handle = 0;
int domid = 0;
int frame_ptrs = 0;
int stack_trace = 0;
int disp_all = 0;
static struct xenctx {
xc_interface *xc_handle;
int domid;
int frame_ptrs;
int stack_trace;
int disp_all;
xc_dominfo_t dominfo;
} xenctx;
#if defined (__i386__) || defined (__x86_64__)
typedef unsigned long long guest_word_t;
@@ -300,7 +303,7 @@ static void print_ctx_32(vcpu_guest_context_x86_32_t *ctx)
printf(" fs: %04x\t", regs->fs);
printf(" gs: %04x\n", regs->gs);
if (disp_all) {
if (xenctx.disp_all) {
print_special(ctx->ctrlreg, "cr", 0x1d, 4);
print_special(ctx->debugreg, "dr", 0xcf, 4);
}
@@ -329,7 +332,7 @@ static void print_ctx_32on64(vcpu_guest_context_x86_64_t *ctx)
printf(" fs: %04x\t", regs->fs);
printf(" gs: %04x\n", regs->gs);
if (disp_all) {
if (xenctx.disp_all) {
print_special(ctx->ctrlreg, "cr", 0x1d, 4);
print_special(ctx->debugreg, "dr", 0xcf, 4);
}
@@ -373,7 +376,7 @@ static void print_ctx_64(vcpu_guest_context_x86_64_t *ctx)
printf(" gs: %04x @ %016"PRIx64"/%016"PRIx64"\n", regs->gs,
ctx->gs_base_kernel, ctx->gs_base_user);
if (disp_all) {
if (xenctx.disp_all) {
print_special(ctx->ctrlreg, "cr", 0x1d, 8);
print_special(ctx->debugreg, "dr", 0xcf, 8);
}
@@ -681,7 +684,7 @@ static void *map_page(vcpu_guest_context_any_t *ctx, int vcpu, guest_word_t virt
static unsigned long previous_mfn = 0;
static void *mapped = NULL;
unsigned long mfn = xc_translate_foreign_address(xc_handle, domid, vcpu, virt);
unsigned long mfn = xc_translate_foreign_address(xenctx.xc_handle, xenctx.domid, vcpu, virt);
unsigned long offset = virt & ~XC_PAGE_MASK;
if (mapped && mfn == previous_mfn)
@@ -692,7 +695,7 @@ static void *map_page(vcpu_guest_context_any_t *ctx, int vcpu, guest_word_t virt
previous_mfn = mfn;
mapped = xc_map_foreign_range(xc_handle, domid, XC_PAGE_SIZE, PROT_READ, mfn);
mapped = xc_map_foreign_range(xenctx.xc_handle, xenctx.domid, XC_PAGE_SIZE, PROT_READ, mfn);
if (mapped == NULL) {
fprintf(stderr, "failed to map page.\n");
@@ -764,21 +767,21 @@ static void print_stack(vcpu_guest_context_any_t *ctx, int vcpu, int width)
}
printf("\n");
if(stack_trace)
if(xenctx.stack_trace)
printf("Stack Trace:\n");
else
printf("Call Trace:\n");
printf("%c [<", stack_trace ? '*' : ' ');
printf("%c [<", xenctx.stack_trace ? '*' : ' ');
print_stack_word(instr_pointer(ctx), width);
printf(">] ");
print_symbol(instr_pointer(ctx));
printf(" <--\n");
if (frame_ptrs) {
if (xenctx.frame_ptrs) {
stack = stack_pointer(ctx);
frame = frame_pointer(ctx);
while(frame && stack < stack_limit) {
if (stack_trace) {
if (xenctx.stack_trace) {
while (stack < frame) {
p = map_page(ctx, vcpu, stack);
printf("| ");
@@ -792,7 +795,7 @@ static void print_stack(vcpu_guest_context_any_t *ctx, int vcpu, int width)
p = map_page(ctx, vcpu, stack);
frame = read_stack_word(p, width);
if (stack_trace) {
if (xenctx.stack_trace) {
printf("|-- ");
print_stack_word(read_stack_word(p, width), width);
printf("\n");
@@ -802,7 +805,7 @@ static void print_stack(vcpu_guest_context_any_t *ctx, int vcpu, int width)
if (frame) {
p = map_page(ctx, vcpu, stack);
word = read_stack_word(p, width);
printf("%c [<", stack_trace ? '|' : ' ');
printf("%c [<", xenctx.stack_trace ? '|' : ' ');
print_stack_word(word, width);
printf(">] ");
print_symbol(word);
@@ -821,7 +824,7 @@ static void print_stack(vcpu_guest_context_any_t *ctx, int vcpu, int width)
printf(">] ");
print_symbol(word);
printf("\n");
} else if (stack_trace) {
} else if (xenctx.stack_trace) {
printf(" ");
print_stack_word(word, width);
printf("\n");
@@ -836,37 +839,36 @@ static void dump_ctx(int vcpu)
{
int ret;
vcpu_guest_context_any_t ctx;
xc_dominfo_t dominfo;
xc_handle = xc_interface_open(0,0,0); /* for accessing control interface */
xenctx.xc_handle = xc_interface_open(0,0,0); /* for accessing control interface */
ret = xc_domain_getinfo(xc_handle, domid, 1, &dominfo);
ret = xc_domain_getinfo(xenctx.xc_handle, xenctx.domid, 1, &xenctx.dominfo);
if (ret < 0) {
perror("xc_domain_getinfo");
exit(-1);
}
ret = xc_domain_pause(xc_handle, domid);
ret = xc_domain_pause(xenctx.xc_handle, xenctx.domid);
if (ret < 0) {
perror("xc_domain_pause");
exit(-1);
}
ret = xc_vcpu_getcontext(xc_handle, domid, vcpu, &ctx);
ret = xc_vcpu_getcontext(xenctx.xc_handle, xenctx.domid, vcpu, &ctx);
if (ret < 0) {
if (!dominfo.paused)
xc_domain_unpause(xc_handle, domid);
if (!xenctx.dominfo.paused)
xc_domain_unpause(xenctx.xc_handle, xenctx.domid);
perror("xc_vcpu_getcontext");
exit(-1);
}
#if defined(__i386__) || defined(__x86_64__)
{
if (dominfo.hvm) {
if (xenctx.dominfo.hvm) {
struct hvm_hw_cpu cpuctx;
xen_capabilities_info_t xen_caps = "";
if (xc_domain_hvm_getcontext_partial(
xc_handle, domid, HVM_SAVE_CODE(CPU),
xenctx.xc_handle, xenctx.domid, HVM_SAVE_CODE(CPU),
vcpu, &cpuctx, sizeof cpuctx) != 0) {
perror("xc_domain_hvm_getcontext_partial");
exit(-1);
@@ -874,7 +876,7 @@ static void dump_ctx(int vcpu)
guest_word_size = (cpuctx.msr_efer & 0x400) ? 8 : 4;
guest_protected_mode = (cpuctx.cr0 & CR0_PE);
/* HVM guest context records are always host-sized */
if (xc_version(xc_handle, XENVER_capabilities, &xen_caps) != 0) {
if (xc_version(xenctx.xc_handle, XENVER_capabilities, &xen_caps) != 0) {
perror("xc_version");
exit(-1);
}
@@ -882,9 +884,9 @@ static void dump_ctx(int vcpu)
} else {
struct xen_domctl domctl;
memset(&domctl, 0, sizeof domctl);
domctl.domain = domid;
domctl.domain = xenctx.domid;
domctl.cmd = XEN_DOMCTL_get_address_size;
if (xc_domctl(xc_handle, &domctl) == 0)
if (xc_domctl(xenctx.xc_handle, &domctl) == 0)
ctxt_word_size = guest_word_size = domctl.u.address_size.size / 8;
}
}
@@ -897,15 +899,15 @@ static void dump_ctx(int vcpu)
print_stack(&ctx, vcpu, guest_word_size);
#endif
if (!dominfo.paused) {
ret = xc_domain_unpause(xc_handle, domid);
if (!xenctx.dominfo.paused) {
ret = xc_domain_unpause(xenctx.xc_handle, xenctx.domid);
if (ret < 0) {
perror("xc_domain_unpause");
exit(-1);
}
}
ret = xc_interface_close(xc_handle);
ret = xc_interface_close(xenctx.xc_handle);
if (ret < 0) {
perror("xc_interface_close");
exit(-1);
@@ -962,13 +964,13 @@ int main(int argc, char **argv)
while ((ch = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
switch(ch) {
case 'f':
frame_ptrs = 1;
xenctx.frame_ptrs = 1;
break;
case 's':
symbol_table = optarg;
break;
case 'S':
stack_trace = 1;
xenctx.stack_trace = 1;
break;
#ifdef __ia64__
case 'r':
@@ -1004,7 +1006,7 @@ int main(int argc, char **argv)
break;
#else
case 'a':
disp_all = 1;
xenctx.disp_all = 1;
break;
#endif
case 'k':
@@ -1026,8 +1028,8 @@ int main(int argc, char **argv)
exit(-1);
}
domid = atoi(argv[0]);
if (domid==0) {
xenctx.domid = atoi(argv[0]);
if (xenctx.domid==0) {
fprintf(stderr, "cannot trace dom0\n");
exit(-1);
}
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