| #include <stdio.h> |
| #include <stdlib.h> |
| #include "../../VEX/pub/libvex.h" |
| |
| Bool return_false(void*cb, Addr ad) |
| { |
| return False; |
| } |
| UInt return_0(void *cb, VexRegisterUpdates* pxControl, |
| const VexGuestExtents *vge) |
| { |
| return 0; |
| } |
| |
| __attribute__ ((noreturn)) |
| static void failure_exit() |
| { |
| fflush(stdout); |
| fprintf(stderr, "//// failure exit called by libVEX\n"); |
| exit(1); |
| } |
| |
| __attribute__ ((noreturn)) |
| static void failure_dispcalled() |
| { |
| fflush(stdout); |
| fprintf(stderr, "//// unexpected call to a disp function by libVEX\n"); |
| exit(1); |
| } |
| |
| static void log_bytes (const HChar* chars, SizeT nbytes ) |
| { |
| printf("%*s", (int)nbytes, chars); |
| } |
| |
| static VexEndness arch_endness (VexArch va) { |
| switch (va) { |
| case VexArch_INVALID: failure_exit(); |
| case VexArchX86: return VexEndnessLE; |
| case VexArchAMD64: return VexEndnessLE; |
| case VexArchARM: return VexEndnessLE; |
| case VexArchARM64: return VexEndnessLE; |
| case VexArchPPC32: return VexEndnessBE; |
| case VexArchPPC64: return VexEndnessBE; |
| case VexArchS390X: return VexEndnessBE; |
| case VexArchMIPS32: return VexEndnessBE; |
| case VexArchMIPS64: return VexEndnessBE; |
| case VexArchTILEGX: return VexEndnessLE; |
| default: failure_exit(); |
| } |
| } |
| |
| /* returns whatever kind of hwcaps needed to make |
| the host and/or guest VexArch happy. */ |
| static UInt arch_hwcaps (VexArch va) { |
| switch (va) { |
| case VexArch_INVALID: failure_exit(); |
| case VexArchX86: return 0; |
| case VexArchAMD64: return 0; |
| case VexArchARM: return 7; |
| case VexArchARM64: return 0; |
| case VexArchPPC32: return 0; |
| case VexArchPPC64: return 0; |
| case VexArchS390X: return VEX_HWCAPS_S390X_LDISP; |
| case VexArchMIPS32: return 0; |
| case VexArchMIPS64: return 0; |
| case VexArchTILEGX: return 0; |
| default: failure_exit(); |
| } |
| } |
| |
| static Bool mode64 (VexArch va) { |
| switch (va) { |
| case VexArch_INVALID: failure_exit(); |
| case VexArchX86: return False; |
| case VexArchAMD64: return True; |
| case VexArchARM: return False; |
| case VexArchARM64: return True; |
| case VexArchPPC32: return False; |
| case VexArchPPC64: return True; |
| case VexArchS390X: return True; |
| case VexArchMIPS32: return False; |
| case VexArchMIPS64: return True; |
| case VexArchTILEGX: return True; |
| default: failure_exit(); |
| } |
| } |
| |
| // noinline, as this function is also the one we decode. |
| __attribute__((noinline)) void get_guest_arch(VexArch *ga) |
| { |
| #if defined(VGA_x86) |
| *ga = VexArchX86; |
| #elif defined(VGA_amd64) |
| *ga = VexArchAMD64; |
| #elif defined(VGA_arm) |
| *ga = VexArchARM; |
| #elif defined(VGA_arm64) |
| *ga = VexArchARM64; |
| #elif defined(VGA_ppc32) |
| *ga = VexArchPPC32; |
| #elif defined(VGA_ppc64be) || defined(VGA_ppc64le) |
| *ga = VexArchPPC64; |
| #elif defined(VGA_s390x) |
| *ga = VexArchS390X; |
| #elif defined(VGA_mips32) |
| *ga = VexArchMIPS32; |
| #elif defined(VGA_mips64) |
| *ga = VexArchMIPS64; |
| #elif defined(VGA_tilegx) |
| *ga = VexArchTILEGX; |
| #else |
| missing arch; |
| #endif |
| } |
| |
| static void show_vta(char *msg, VexTranslateArgs *vta) |
| { |
| printf("//// %s translating guest %s(%d) %s %dbits to host %s(%d)" |
| " %s %dbits\n", |
| msg, |
| LibVEX_ppVexArch(vta->arch_guest), |
| vta->arch_guest, |
| LibVEX_ppVexEndness(arch_endness(vta->arch_guest)), |
| mode64(vta->arch_guest) ? 64 : 32, |
| LibVEX_ppVexArch(vta->arch_host), |
| vta->arch_host, |
| LibVEX_ppVexEndness(arch_endness(vta->arch_host)), |
| mode64(vta->arch_host) ? 64 : 32); |
| } |
| |
| |
| int main(int argc, char **argv) |
| { |
| const int multiarch = argc > 1 ? atoi(argv[1]) : 0; |
| // 0 means: do not do multiarch |
| // > 0 means: do multiarch |
| // > VexArch_INVALID means: do multiarch, only and specifically |
| // with the host arch equal to multiarch |
| // (ugly interface, but hey, that is for testing only special cases only). |
| const int endness_may_differ = argc > 2 ? atoi(argv[2]) : 0; |
| const int wordsize_may_differ = argc > 3 ? atoi(argv[3]) : 0; |
| // Note: if multiarch > VexArch_INVALID, then endness_may_differ |
| // and wordsize_may_differ are ignored. |
| |
| // So, here are examples of usage: |
| // * run only host == guest: |
| // ./libvexmultiarch_test |
| // ./libvex_test |
| // * run all combinations (this will abort very soon :): |
| // ./libvexmultiarch_test 1 1 1 |
| // * run all combinations that are supposed to work by default : |
| // ./libvexmultiarch_test 1 0 0 |
| // * run a specific host arch (e.g. 1028 i.e. VexArchARM64) |
| // ./libvexmultiarch_test 1028 |
| // * show how a single arch VEX lib reports its failure when host != guest |
| // ./libvex_test 1 0 0 |
| |
| |
| VexArch guest_arch; |
| VexEndness guest_endness; |
| |
| VexControl vcon; |
| |
| VexGuestExtents vge; |
| VexTranslateArgs vta; |
| VexTranslateResult vtr; |
| |
| UChar host_bytes[10000]; |
| Int host_bytes_used; |
| |
| LibVEX_default_VexControl(&vcon); |
| LibVEX_Init (failure_exit, log_bytes, 3, &vcon); |
| |
| get_guest_arch (&guest_arch); |
| guest_endness = arch_endness (guest_arch); |
| |
| LibVEX_default_VexArchInfo(&vta.archinfo_guest); |
| LibVEX_default_VexArchInfo(&vta.archinfo_host); |
| LibVEX_default_VexAbiInfo (&vta.abiinfo_both); |
| |
| // Use some values that makes AMD64 happy. |
| vta.abiinfo_both.guest_stack_redzone_size = 128; |
| |
| // Prepare first for a translation where guest == host |
| // We will translate the get_guest_arch function |
| vta.arch_guest = guest_arch; |
| vta.archinfo_guest.endness = guest_endness; |
| vta.archinfo_guest.hwcaps = arch_hwcaps (vta.arch_guest); |
| vta.arch_host = guest_arch; |
| vta.archinfo_host.endness = guest_endness; |
| vta.archinfo_host.hwcaps = arch_hwcaps (vta.arch_host); |
| vta.callback_opaque = NULL; |
| vta.guest_bytes = (UChar*) get_guest_arch; |
| vta.guest_bytes_addr = (Addr) get_guest_arch; |
| vta.chase_into_ok = return_false; |
| vta.guest_extents = &vge; |
| vta.host_bytes = host_bytes; |
| vta.host_bytes_size = sizeof host_bytes; |
| vta.host_bytes_used = &host_bytes_used; |
| vta.instrument1 = NULL; |
| vta.instrument2 = NULL; |
| vta.finaltidy = NULL; |
| vta.needs_self_check = return_0; |
| vta.preamble_function = NULL; |
| vta.traceflags = 0xFFFFFFFF; |
| vta.sigill_diag = False; |
| vta.addProfInc = False; |
| vta.disp_cp_chain_me_to_slowEP = failure_dispcalled; |
| vta.disp_cp_chain_me_to_fastEP = failure_dispcalled; |
| vta.disp_cp_xindir = failure_dispcalled; |
| vta.disp_cp_xassisted = failure_dispcalled; |
| |
| |
| show_vta("host == guest", &vta); |
| vtr = LibVEX_Translate ( &vta ); |
| if (vtr.status != VexTransOK) |
| return 1; |
| |
| // Now, try various combinations, if told to do so: |
| // host != guest, |
| // endness(host) != endness(guest) (not well supported) |
| // wordsize (host) != wordsize (guest) (not well supported) |
| // The not well supported combinations are not run, unless requested |
| // explicitely via command line arguments. |
| if (multiarch) { |
| VexArch va; |
| for (va = VexArchX86; va <= VexArchTILEGX; va++) { |
| vta.arch_host = va; |
| vta.archinfo_host.endness = arch_endness (vta.arch_host); |
| vta.archinfo_host.hwcaps = arch_hwcaps (vta.arch_host); |
| if (arch_endness(va) != arch_endness(guest_arch) |
| && !endness_may_differ |
| && multiarch != va) { |
| show_vta("skipped (endness differs)", &vta); |
| continue; |
| } |
| if (mode64(va) != mode64(guest_arch) |
| && !wordsize_may_differ |
| && multiarch != va) { |
| show_vta("skipped (word size differs)", &vta); |
| continue; |
| } |
| if (multiarch > VexArch_INVALID |
| && multiarch != va) { |
| show_vta("skipped (!= specific requested arch)", &vta); |
| continue; |
| } |
| show_vta ("doing", &vta); |
| vtr = LibVEX_Translate ( &vta ); |
| if (vtr.status != VexTransOK) |
| return 1; |
| } |
| } |
| |
| printf ("//// libvex testing normal exit\n"); |
| return 0; |
| } |
