Laurent Vivier 6a0e8bb495 target/m68k: implement fmove.l #<data>,FPCR ... The immediate value mode was ignored and instruction execution ends to an invalid access mode. This was found running 'R' that set FPSR to 0 at startup with a 'fmove.l #0,FPSR' in qemu-system-m68k emulation and triggers a kernel crash: [ 56.640000] *** ADDRESS ERROR *** FORMAT=2 [ 56.640000] Current process id is 728 [ 56.640000] BAD KERNEL TRAP: 00000000 [ 56.640000] Modules linked in: sg evdev mac_hid ip_tables x_tables sha1_generic hmac ipv6 nf_defrag_ipv6 autofs4 ext4 crc16 mbcache jbd2 crc32c_generic sd_mod t10_pi crc_t10dif crct10dif_generic crct10dif_common sr_mod cdrom mac_esp macsonic esp_scsi [ 56.640000] PC: [<00016a2c>] X_UNSUPP+0x2c/0x3c [ 56.640000] SR: 2004 SP: 3eb5e68c a2: c02e239a [ 56.640000] d0: 00000040 d1: 00000002 d2: 8002adec d3: 8002ad50 [ 56.640000] d4: 8002c768 d5: 0000000d a0: ffffffc2 a1: ffffffc1 [ 56.640000] Process R (pid: 728, task=a3dfda5d) [ 56.640000] Frame format=2 instr addr=00000000 [ 56.650000] Stack from 3a4d9f30: [ 56.650000] 41000000 00000002 00000002 ffffffc2 ffffffc1 1fff0000 80000000 00000000 [ 56.650000] 3fbf0000 80000000 00000000 00000000 20000000 00000000 7fff0000 ffffffff [ 56.650000] ffffffff 00000000 00050008 00000000 8000067c c02c2000 efffee20 000002d8 [ 56.650000] 00002a28 3a4d9f98 00000002 00000014 fffffffe 8002c768 00000002 00000041 [ 56.650000] 00000002 c041fc58 c0743758 ffffffff 00000000 0008c075 00002b24 00000012 [ 56.650000] 000007d0 00000024 00000002 c05bef04 c05bef04 0000005e 00000077 c28aca70 [ 56.650000] Call Trace: [<00050008>] copy_overflow+0x10/0x28 [ 56.650000] [<00002a28>] buserr+0x20/0x28 [ 56.650000] [<0008c075>] bpf_check+0x57f/0x1cfa [ 56.650000] [<00002b24>] syscall+0x8/0xc [ 56.650000] [<0000c019>] dn_sched_init+0x75/0x88 [ 56.650000] Code: 1017 0200 00f0 0c00 0040 66ff 0000 05ac <f23c> 8800 0000 0000 f23c 9000 0000 0000 222e ff84 082e 0005 ff1c 6600 000a 0281 [ 56.650000] Disabling lock debugging due to kernel taint ... Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200531110231.620711-1-laurent@vivier.eu> Signed-off-by: Laurent Vivier <laurent@vivier.eu>		2020-06-02 13:59:01 +02:00
..
cpu-param.h	tcg: Split out target/arch/cpu-param.h	2019-06-10 07:03:34 -07:00
cpu-qom.h	cpu: Use DeviceClass reset instead of a special CPUClass reset	2020-03-17 19:48:10 -04:00
cpu.c	target/m68k: fix gdb for m68xxx	2020-05-06 09:29:26 +01:00
cpu.h	gdbstub: extend GByteArray to read register helpers	2020-03-17 17:38:38 +00:00
fpu_helper.c	softfloat: Name rounding mode enum	2020-05-19 08:41:26 -07:00
gdbstub.c	gdbstub: extend GByteArray to read register helpers	2020-03-17 17:38:38 +00:00
helper.c	gdbstub: Introduce gdb_get_float64() to get 64-bit float registers	2020-05-06 09:29:26 +01:00
helper.h	target/m68k: implement fcosh	2018-03-13 16:35:05 +01:00
m68k-semi.c	Clean up inclusion of sysemu/sysemu.h	2019-08-16 13:31:53 +02:00
Makefile.objs	target/m68k: add fmod/frem	2018-03-04 17:27:06 +01:00
monitor.c	target: Clean up how the dump_mmu() print	2019-04-18 22:18:59 +02:00
op_helper.c	target/m68k: Use cpu_*_mmuidx_ra instead of MMU_MODE{0,1}_SUFFIX	2020-01-15 15:13:10 -10:00
qregs.def	target-m68k: use floatx80 internally	2017-06-21 22:10:29 +02:00
softfloat.c	softfloat: Replace flag with bool	2020-05-19 08:40:50 -07:00
softfloat.h	m68k comments break patch submission due to being incorrectly formatted	2019-06-26 17:14:39 +02:00
softfloat_fpsp_tables.h	m68k comments break patch submission due to being incorrectly formatted	2019-06-26 17:14:39 +02:00
translate.c	target/m68k: implement fmove.l #<data>,FPCR	2020-06-02 13:59:01 +02:00