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diagnose.c
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/* DIAGNOSE.C (c) Copyright Roger Bowler, 2000-2012 */
/* ESA/390 Diagnose Functions */
/* */
/* Released under "The Q Public License Version 1" */
/* (http://www.hercules-390.org/herclic.html) as modifications to */
/* Hercules. */
/* z/Architecture support - (c) Copyright Jan Jaeger, 1999-2012 */
/*-------------------------------------------------------------------*/
/* This module implements miscellaneous diagnose functions */
/*-------------------------------------------------------------------*/
/*-------------------------------------------------------------------*/
/* Additional credits: */
/* Hercules-specific diagnose calls by Jay Maynard. */
/* Set/reset bad frame indicator call by Jan Jaeger. */
/*-------------------------------------------------------------------*/
#include "hstdinc.h"
#if !defined(_HENGINE_DLL_)
#define _HENGINE_DLL_
#endif
#if !defined(_DIAGNOSE_C_)
#define _DIAGNOSE_C_
#endif
#include "hercules.h"
#include "opcode.h"
#include "inline.h"
#if !defined(_DIAGNOSE_H)
#define _DIAGNOSE_H
/*-------------------------------------------------------------------*/
/* Internal macro definitions */
/*-------------------------------------------------------------------*/
/* Diagnose 308 function subcodes */
#define DIAG308_IPL_CLEAR 3 /* IPL clear */
#define DIAG308_IPL_NORMAL 4 /* IPL normal/dump */
#define DIAG308_SET_PARAM 5 /* Set IPL parameters */
#define DIAG308_STORE_PARAM 6 /* Store IPL parameters */
/* Diagnose 308 return codes */
#define DIAG308_RC_OK 1
#endif /*!defined(_DIAGNOSE_H)*/
#if defined(OPTION_DYNAMIC_LOAD) && defined(FEATURE_HERCULES_DIAGCALLS)
static void ARCH_DEP(diagf14_call)(int r1, int r3, REGS *regs)
{
char name[32+1];
char entry[64];
unsigned int i;
void (*dllcall)(int, int, REGS *);
static char *prefix[] = {
#if defined(_370)
"s370_diagf14_",
#endif
#if defined(_390)
"s390_diagf14_",
#endif
#if defined(_900)
"z900_diagf14_"
#endif
};
ARCH_DEP(vfetchc) (name,sizeof(name)-2, regs->GR(r1), USE_REAL_ADDR, regs);
for(i = 0; i < sizeof(name)-1; i++)
{
name[i] = guest_to_host(name[i]);
if(!isprint(name[i]) || isspace(name[i]))
{
name[i] = '\0';
break;
}
}
/* Ensure string terminator */
name[i] = '\0';
strlcpy(entry,prefix[regs->arch_mode],sizeof(entry));
strlcat(entry,name,sizeof(entry));
if( (dllcall = HDL_FINDSYM(entry)) )
dllcall(r1, r3, regs);
else
ARCH_DEP(program_interrupt) (regs, PGM_SPECIFICATION_EXCEPTION);
}
#endif /*defined(OPTION_DYNAMIC_LOAD)*/
#if defined(FEATURE_PROGRAM_DIRECTED_REIPL) && !defined(STOP_CPUS_AND_IPL)
#define STOP_CPUS_AND_IPL
/*---------------------------------------------------------------------------*/
/* Within diagnose 0x308 (re-ipl) a thread is started with the next code. */
/*---------------------------------------------------------------------------*/
static void *stop_cpus_and_ipl(int *ipltype)
{
int i;
char iplcmd[256];
int cpustates;
CPU_BITMAP mask;
sysblk.diag8cmd |= DIAG8CMD_RUNNING;
panel_command("stopall");
sysblk.diag8cmd &= ~DIAG8CMD_RUNNING;
WRMSG(HHC01900, "I");
sprintf(iplcmd, "%s %03X", ipltype, sysblk.ipldev);
do
{
OBTAIN_INTLOCK(NULL);
cpustates = CPUSTATE_STOPPED;
mask = sysblk.started_mask;
for(i = 0; mask; i++)
{
if(mask & 1)
{
WRMSG(HHC01901, "I", PTYPSTR(i), i);
if(IS_CPU_ONLINE(i) && sysblk.regs[i]->cpustate != CPUSTATE_STOPPED)
cpustates = sysblk.regs[i]->cpustate;
}
mask >>= 1;
}
RELEASE_INTLOCK(NULL);
if(cpustates != CPUSTATE_STOPPED)
{
WRMSG(HHC01902, "I");
SLEEP(1);
}
}
while(cpustates != CPUSTATE_STOPPED);
sysblk.diag8cmd |= DIAG8CMD_RUNNING;
panel_command(iplcmd);
sysblk.diag8cmd &= ~DIAG8CMD_RUNNING;
return NULL;
}
#endif /*defined(FEATURE_PROGRAM_DIRECTED_REIPL) && !defined(STOP_CPUS_AND_IPL)*/
/*-------------------------------------------------------------------*/
/* Diagnose instruction */
/*-------------------------------------------------------------------*/
void ARCH_DEP(diagnose_call) (VADR effective_addr2, int b2,
int r1, int r2, REGS *regs)
{
#ifdef FEATURE_HERCULES_DIAGCALLS
U32 n; /* 32-bit operand value */
#endif /*FEATURE_HERCULES_DIAGCALLS*/
U32 code;
code = effective_addr2;
switch(code) {
#if defined(FEATURE_IO_ASSIST)
case 0x002:
/*---------------------------------------------------------------*/
/* Diagnose 002: Update Interrupt Interlock Control Bit in PMCW */
/*---------------------------------------------------------------*/
ARCH_DEP(diagnose_002) (regs, r1, r2);
break;
#endif
case 0x01F:
/*---------------------------------------------------------------*/
/* Diagnose 01F: Power Off */
/*---------------------------------------------------------------*/
/* If diag8cmd is not enabled then we are not allowed
* to manipulate the real machine i.e. hercules itself
*/
if(!(sysblk.diag8cmd & DIAG8CMD_ENABLE))
ARCH_DEP(program_interrupt)(regs, PGM_SPECIFICATION_EXCEPTION);
/* The poweroff diagnose is only valid on the 9221 */
if (sysblk.cpumodel != 0x9221
/* and r1/r2 must contain C'POWEROFF' in EBCDIC */
|| regs->GR_L(r1) != 0xD7D6E6C5
|| regs->GR_L(r2) != 0xD9D6C6C6)
ARCH_DEP(program_interrupt) (regs, PGM_SPECIFICATION_EXCEPTION);
regs->cpustate = CPUSTATE_STOPPING;
ON_IC_INTERRUPT(regs);
/* Release the configuration */
do_shutdown();
/* Power Off: exit hercules */
exit(0);
#if defined(FEATURE_HYPERVISOR) || defined(FEATURE_EMULATE_VM)
case 0x044:
/*---------------------------------------------------------------*/
/* Diagnose 044: Voluntary Time Slice End */
/*---------------------------------------------------------------*/
ARCH_DEP(scpend_call) ();
break;
#endif
#ifdef FEATURE_MSSF_CALL
case 0x080:
/*---------------------------------------------------------------*/
/* Diagnose 080: MSSF Call */
/*---------------------------------------------------------------*/
regs->psw.cc = ARCH_DEP(mssf_call) (r1, r2, regs);
break;
#endif /*FEATURE_MSSF_CALL*/
#if defined(FEATURE_HYPERVISOR) || defined(FEATURE_EMULATE_VM)
case 0x09C:
/*---------------------------------------------------------------*/
/* Diagnose 09C: Voluntary Time Slice End With Target CPU */
/*---------------------------------------------------------------*/
ARCH_DEP(scpend_call) (); // (treat same as DIAG X'44')
break;
#endif
#if defined(FEATURE_HYPERVISOR)
case 0x204:
/*---------------------------------------------------------------*/
/* Diagnose 204: LPAR RMF Interface */
/*---------------------------------------------------------------*/
ARCH_DEP(diag204_call) (r1, r2, regs);
regs->psw.cc = 0;
break;
case 0x224:
/*---------------------------------------------------------------*/
/* Diagnose 224: CPU Names */
/*---------------------------------------------------------------*/
ARCH_DEP(diag224_call) (r1, r2, regs);
regs->psw.cc = 0;
break;
#endif /*defined(FEATURE_HYPERVISOR)*/
#if 0
case 0x21C:
/*---------------------------------------------------------------*/
/* Diagnose 21C: ???? */
/*---------------------------------------------------------------*/
/*INCOMPLETE*/
regs->psw.cc = 0;
break;
#endif
#if 0
case 0x288;:
/*---------------------------------------------------------------*/
/* Diagnose 288: Control Virtual Machine Time Bomb */
/*---------------------------------------------------------------*/
regs->psw.cc = ARCH_DEP(vm_timebomb) (r1, r2, regs);
break;
#endif
#ifdef FEATURE_EMULATE_VM
case 0x000:
/*---------------------------------------------------------------*/
/* Diagnose 000: Store Extended Identification Code */
/*---------------------------------------------------------------*/
ARCH_DEP(extid_call) (r1, r2, regs);
break;
case 0x008:
/*---------------------------------------------------------------*/
/* Diagnose 008: Virtual Console Function */
/*---------------------------------------------------------------*/
/* If diag8cmd is not enabled then we are not allowed
* to manipulate the real machine i.e. hercules itself
*/
if(!(sysblk.diag8cmd & DIAG8CMD_ENABLE))
ARCH_DEP(program_interrupt)(regs, PGM_SPECIFICATION_EXCEPTION);
/* Process CP command and set condition code */
regs->psw.cc = ARCH_DEP(cpcmd_call) (r1, r2, regs);
break;
case 0x00C:
/*---------------------------------------------------------------*/
/* Diagnose 00C: Pseudo Timer */
/*---------------------------------------------------------------*/
ARCH_DEP(pseudo_timer) (code, r1, r2, regs);
break;
case 0x024:
/*---------------------------------------------------------------*/
/* Diagnose 024: Device Type and Features */
/*---------------------------------------------------------------*/
regs->psw.cc = ARCH_DEP(diag_devtype) (r1, r2, regs);
break;
case 0x05C:
/*---------------------------------------------------------------*/
/* Diagnose 05C: Error Message Editing */
/*---------------------------------------------------------------*/
/* This function is implemented as a no-operation */
regs->psw.cc = 0;
break;
case 0x060:
/*---------------------------------------------------------------*/
/* Diagnose 060: Virtual Machine Storage Size */
/*---------------------------------------------------------------*/
/* Load main storage size in bytes into R1 register */
regs->GR_L(r1) = regs->mainlim + 1;
break;
case 0x064:
/*---------------------------------------------------------------*/
/* Diagnose 064: Named Saved Segment Manipulation */
/*---------------------------------------------------------------*/
/* Return code 44 cond code 2 means segment does not exist */
regs->GR_L(r2) = 44;
regs->psw.cc = 2;
break;
case 0x0A4:
/*---------------------------------------------------------------*/
/* Diagnose 0A4: Synchronous I/O (Standard CMS Blocksize) */
/*---------------------------------------------------------------*/
regs->psw.cc = ARCH_DEP(syncblk_io) (r1, r2, regs);
// logmsg ("Diagnose X\'0A4\': CC=%d, R15=%8.8X\n", /*debug*/
// regs->psw.cc, regs->GR_L(15)); /*debug*/
break;
case 0x0A8:
/*---------------------------------------------------------------*/
/* Diagnose 0A8: Synchronous General I/O */
/*---------------------------------------------------------------*/
regs->psw.cc = ARCH_DEP(syncgen_io) (r1, r2, regs);
// logmsg ("Diagnose X\'0A8\': CC=%d, R15=%8.8X\n", /*debug*/
// regs->psw.cc, regs->GR_L(15)); /*debug*/
break;
case 0x0B0:
/*---------------------------------------------------------------*/
/* Diagnose 0B0: Access Re-IPL Data */
/*---------------------------------------------------------------*/
ARCH_DEP(access_reipl_data) (r1, r2, regs);
break;
case 0x0DC:
/*---------------------------------------------------------------*/
/* Diagnose 0DC: Control Application Monitor Record Collection */
/*---------------------------------------------------------------*/
/* This function is implemented as a no-operation */
regs->GR_L(r2) = 0;
regs->psw.cc = 0;
break;
case 0x210:
/*---------------------------------------------------------------*/
/* Diagnose 210: Retrieve Device Information */
/*---------------------------------------------------------------*/
regs->psw.cc = ARCH_DEP(device_info) (r1, r2, regs);
break;
case 0x214:
/*---------------------------------------------------------------*/
/* Diagnose 214: Pending Page Release */
/*---------------------------------------------------------------*/
regs->psw.cc = ARCH_DEP(diag_ppagerel) (r1, r2, regs);
break;
case 0x220:
/*---------------------------------------------------------------*/
/* Diagnose 220: TOD Epoch */
/*---------------------------------------------------------------*/
ODD_CHECK(r2, regs);
switch(regs->GR_L(r1))
{
case 0:
/* Obtain TOD features */
regs->GR_L(r2) =0xc0000000;
regs->GR_L(r2+1)=0x00000000;
break;
case 1:
/* Obtain TOD offset to real TOD in R2, R2+1 */
regs->GR_L(r2) = (regs->tod_epoch >> 24) & 0xFFFFFFFF;
regs->GR_L(r2+1)= (regs->tod_epoch << 8) & 0xFFFFFFFF;
break;
default:
ARCH_DEP(program_interrupt)(regs, PGM_SPECIFICATION_EXCEPTION);
}
break;
case 0x23C:
/*---------------------------------------------------------------*/
/* Diagnose 23C: Address Space Services */
/*---------------------------------------------------------------*/
/* This function is implemented as a no-operation */
regs->GR_L(r2) = 0;
break;
#if defined(FEATURE_VM_BLOCKIO)
case 0x250:
/*---------------------------------------------------------------*/
/* Diagnose 250: Standardized Block I/O */
/*---------------------------------------------------------------*/
regs->psw.cc = ARCH_DEP(vm_blockio) (r1, r2, regs);
break;
#endif /*defined(FEATURE_VM_BLOCKIO)*/
case 0x260:
/*---------------------------------------------------------------*/
/* Diagnose 260: Access Certain Virtual Machine Information */
/*---------------------------------------------------------------*/
ARCH_DEP(vm_info) (r1, r2, regs);
break;
case 0x264:
/*---------------------------------------------------------------*/
/* Diagnose 264: CP Communication */
/*---------------------------------------------------------------*/
/* This function is implemented as a no-operation */
PTT_ERR("*DIAG264",regs->GR_L(r1),regs->GR_L(r2),regs->psw.IA_L);
regs->psw.cc = 0;
break;
case 0x270:
/*---------------------------------------------------------------*/
/* Diagnose 270: Pseudo Timer Extended */
/*---------------------------------------------------------------*/
ARCH_DEP(pseudo_timer) (code, r1, r2, regs);
break;
case 0x274:
/*---------------------------------------------------------------*/
/* Diagnose 274: Set Timezone Interrupt Flag */
/*---------------------------------------------------------------*/
/* This function is implemented as a no-operation */
PTT_ERR("*DIAG274",regs->GR_L(r1),regs->GR_L(r2),regs->psw.IA_L);
regs->psw.cc = 0;
break;
#endif /*FEATURE_EMULATE_VM*/
#ifdef FEATURE_PROGRAM_DIRECTED_REIPL
case 0x308:
/*---------------------------------------------------------------*/
/* Diagnose 308: IPL functions */
/*---------------------------------------------------------------*/
switch(r2)
{
TID tid; /* Thread identifier */
char *ipltype; /* "ipl" or "iplc" */
int rc;
case DIAG308_IPL_CLEAR:
ipltype = "iplc";
goto diag308_cthread;
case DIAG308_IPL_NORMAL:
ipltype = "ipl";
diag308_cthread:
rc = create_thread(&tid, DETACHED, stop_cpus_and_ipl, ipltype, "Stop cpus and ipl");
if(rc)
WRMSG(HHC00102, "E", strerror(rc));
regs->cpustate = CPUSTATE_STOPPING;
ON_IC_INTERRUPT(regs);
break;
case DIAG308_SET_PARAM:
/* INCOMPLETE */
regs->GR(1) = DIAG308_RC_OK;
break;
case DIAG308_STORE_PARAM:
/* INCOMPLETE */
regs->GR(1) = DIAG308_RC_OK;
break;
default:
ARCH_DEP(program_interrupt)(regs, PGM_SPECIFICATION_EXCEPTION);
} /* end switch(r2) */
break;
#endif /*FEATURE_PROGRAM_DIRECTED_REIPL*/
#ifdef FEATURE_HERCULES_DIAGCALLS
case 0xF00:
/*---------------------------------------------------------------*/
/* Diagnose F00: Hercules normal mode */
/*---------------------------------------------------------------*/
/* If diag8cmd is not enabled then we are not allowed
* to manipulate the real machine i.e. hercules itself
*/
if(!(sysblk.diag8cmd & DIAG8CMD_ENABLE))
ARCH_DEP(program_interrupt)(regs, PGM_SPECIFICATION_EXCEPTION);
sysblk.inststep = 0;
SET_IC_TRACE;
break;
case 0xF04:
/*---------------------------------------------------------------*/
/* Diagnose F04: Hercules single step mode */
/*---------------------------------------------------------------*/
/* If diag8cmd is not enabled then we are not allowed
* to manipulate the real machine i.e. hercules itself
*/
if(!(sysblk.diag8cmd & DIAG8CMD_ENABLE))
ARCH_DEP(program_interrupt)(regs, PGM_SPECIFICATION_EXCEPTION);
sysblk.inststep = 1;
SET_IC_TRACE;
break;
case 0xF08:
/*---------------------------------------------------------------*/
/* Diagnose F08: Hercules get instruction counter */
/*---------------------------------------------------------------*/
regs->GR_L(r1) = (U32)INSTCOUNT(regs);
break;
case 0xF0C:
/*---------------------------------------------------------------*/
/* Diagnose F0C: Set/reset bad frame indicator */
/*---------------------------------------------------------------*/
/* If diag8cmd is not enabled then we are not allowed
* to manipulate the real machine i.e. hercules itself
*/
if(!(sysblk.diag8cmd & DIAG8CMD_ENABLE))
ARCH_DEP(program_interrupt)(regs, PGM_SPECIFICATION_EXCEPTION);
/* Load 4K block address from R2 register */
n = regs->GR_L(r2) & ADDRESS_MAXWRAP(regs);
/* Convert real address to absolute address */
n = APPLY_PREFIXING (n, regs->PX);
/* Addressing exception if block is outside main storage */
if ( n > regs->mainlim )
{
ARCH_DEP(program_interrupt) (regs, PGM_ADDRESSING_EXCEPTION);
break;
}
/* Update the storage key from R1 register bit 31 */
STORAGE_KEY(n, regs) &= ~(STORKEY_BADFRM);
STORAGE_KEY(n, regs) |= regs->GR_L(r1) & STORKEY_BADFRM;
break;
case 0xF10:
/*---------------------------------------------------------------*/
/* Diagnose F10: Hercules CPU stop */
/*---------------------------------------------------------------*/
/* If diag8cmd is not enabled then we are not allowed
* to manipulate the real machine i.e. hercules itself
*/
if(!(sysblk.diag8cmd & DIAG8CMD_ENABLE))
ARCH_DEP(program_interrupt)(regs, PGM_SPECIFICATION_EXCEPTION);
regs->cpustate = CPUSTATE_STOPPING;
ON_IC_INTERRUPT(regs);
break;
#if defined(OPTION_DYNAMIC_LOAD)
case 0xF14:
/*---------------------------------------------------------------*/
/* Diagnose F14: Hercules DLL interface */
/*---------------------------------------------------------------*/
ARCH_DEP(diagf14_call) (r1, r2, regs);
break;
#endif /*defined(OPTION_DYNAMIC_LOAD)*/
#if defined(_FEATURE_HOST_RESOURCE_ACCESS_FACILITY)
case 0xF18:
/*---------------------------------------------------------------*/
/* Diagnose F18: Hercules Access Host Resource */
/*---------------------------------------------------------------*/
ARCH_DEP(diagf18_call) (r1, r2, regs);
break;
#endif /* defined(_FEATURE_HOST_RESOURCE_ACCESS_FACILITY) */
#if !defined(NO_SIGABEND_HANDLER)
/* The following diagnose calls cause a exigent (non-repressible)
machine check, and are used for test purposes only *JJ */
case 0xFE8:
/*---------------------------------------------------------------*/
/* Diagnose FE8: Simulate Illegal Instruction */
/*---------------------------------------------------------------*/
raise(SIGILL);
break;
case 0xFEC:
/*---------------------------------------------------------------*/
/* Diagnose FEC: Simulate Floating Point Exception */
/*---------------------------------------------------------------*/
raise(SIGFPE);
break;
case 0xFF0:
/*---------------------------------------------------------------*/
/* Diagnose FF0: Simulate Segment Violation */
/*---------------------------------------------------------------*/
CRASH();
break;
case 0xFF4:
/*---------------------------------------------------------------*/
/* Diagnose FF4: Simulate BUS Error */
/*---------------------------------------------------------------*/
raise(SIGBUS);
break;
case 0xFF8:
/*---------------------------------------------------------------*/
/* Diagnose FF8: Simulate Loop */
/*---------------------------------------------------------------*/
while(1);
/* (never reached) */
case 0xFFC:
/*---------------------------------------------------------------*/
/* Diagnose FFC: Simulate Wait */
/*---------------------------------------------------------------*/
SLEEP(300);
break;
#endif /*!defined(NO_SIGABEND_HANDLER)*/
#endif /*FEATURE_HERCULES_DIAGCALLS*/
default:
/*---------------------------------------------------------------*/
/* Diagnose xxx: Invalid function code */
/*---------------------------------------------------------------*/
if( HDC4(debug_diagnose, code, r1, r2, regs) )
return;
/* Power Off diagnose on 4361, 9371, 9373, 9375, 9377, 9221: */
/* */
/* DS 0H */
/* DC X'8302',S(SHUTDATA) MUST BE R0 AND R2 */
/* ... */
/* DS 0H */
/* SHUTDATA DC X'0000FFFF' MUST BE X'0000FFFF' */
if (0 == r1 && 2 == r2
&& sysblk.cpuversion != 0xFF
&& (sysblk.cpumodel == 0x4361
|| (sysblk.cpumodel & 0xFFF9) == 0x9371 /* (937X) */
|| sysblk.cpumodel == 0x9221)
)
{
if (0x0000FFFF == ARCH_DEP(vfetch4)(effective_addr2, b2, regs))
{
/* If diag8cmd is not enabled then we are not allowed
* to manipulate the real machine i.e. hercules itself
*/
if(!(sysblk.diag8cmd & DIAG8CMD_ENABLE))
ARCH_DEP(program_interrupt)(regs, PGM_SPECIFICATION_EXCEPTION);
regs->cpustate = CPUSTATE_STOPPING;
ON_IC_INTERRUPT(regs);
/* Release the configuration */
do_shutdown();
/* Power Off: exit hercules */
exit(0);
}
}
#if defined(FEATURE_S370_CHANNEL) && defined(OPTION_NOP_MODEL158_DIAGNOSE)
if (regs->cpumodel != 0x0158)
#endif
ARCH_DEP(program_interrupt)(regs, PGM_SPECIFICATION_EXCEPTION);
return;
} /* end switch(code) */
return;
} /* end function diagnose_call */
#if !defined(_GEN_ARCH)
#if defined(_ARCHMODE2)
#define _GEN_ARCH _ARCHMODE2
#include "diagnose.c"
#endif
#if defined(_ARCHMODE3)
#undef _GEN_ARCH
#define _GEN_ARCH _ARCHMODE3
#include "diagnose.c"
#endif
#endif /*!defined(_GEN_ARCH)*/