kernel/linux.git/arch/powerpc/xmon/nonstdio.h, branch linux-4.4.y

powerpc/xmon: Paged output for paca display

2015-10-15T09:32:01+00:00

The paca display is already more than 24 lines, which can be problematic if you have an old school 80x24 terminal, or more likely you are on a virtual terminal which does not scroll for whatever reason. This patch adds a new command "#", which takes a single (hex) numeric argument: lines per page. It will cause the output of "dp" and "dpa" to be broken into pages, if necessary. Sample output: 0:mon> # 10 0:mon> dp1 paca for cpu 0x1 @ c00000000fdc0480: possible = yes present = yes online = yes lock_token = 0x8000 (0x8) paca_index = 0x1 (0xa) kernel_toc = 0xc000000000eb2400 (0x10) kernelbase = 0xc000000000000000 (0x18) kernel_msr = 0xb000000000001032 (0x20) emergency_sp = 0xc00000003ffe8000 (0x28) mc_emergency_sp = 0xc00000003ffe4000 (0x2e0) in_mce = 0x0 (0x2e8) data_offset = 0x7f170000 (0x30) hw_cpu_id = 0x8 (0x38) cpu_start = 0x1 (0x3a) kexec_state = 0x0 (0x3b) [Hit a key (a:all, q:truncate, any:next page)] 0:mon> __current = 0xc00000007e696620 (0x290) kstack = 0xc00000007e6ebe30 (0x298) stab_rr = 0xb (0x2a0) saved_r1 = 0xc00000007ef37860 (0x2a8) trap_save = 0x0 (0x2b8) soft_enabled = 0x0 (0x2ba) irq_happened = 0x1 (0x2bb) io_sync = 0x0 (0x2bc) irq_work_pending = 0x0 (0x2bd) nap_state_lost = 0x0 (0x2be) 0:mon> Signed-off-by: Sam Bobroff [mpe: Use bool, make some variables static] Signed-off-by: Michael Ellerman

powerpc/xmon: Merge start.c into nonstdio.c

2012-11-15T01:59:46+00:00

The routines in start.c are only ever called from nonstdio.c, so if we move them in there they can become static which is nice. I suspect the idea behind the separation was that start.c could be replaced in order to build xmon in userland. If anyone still cares about doing that we could handle that with an ifdef or two. Signed-off-by: Michael Ellerman Signed-off-by: Benjamin Herrenschmidt

powerpc/xmon: Make xmon_getchar() static

2012-11-15T01:59:43+00:00

xmon_getchar() is only called from within nonstdio.c, so make it static. Signed-off-by: Michael Ellerman Signed-off-by: Benjamin Herrenschmidt

powerpc/xmon: Remove empty xmon_map_scc()

2012-11-15T01:59:40+00:00

This has been empty since 2005, commit 51d3082 "Unify udbg (#2)". Signed-off-by: Michael Ellerman Signed-off-by: Benjamin Herrenschmidt

powerpc/xmon: Remove unused xmon_expect() & xmon_read_poll()

2012-11-15T01:59:37+00:00

It looks like xmon_expect() was used for doing xmon over a modem (!?), that code was dropped in 2005 in commit 51d3082 "Unify udbg (#2)". Once xmon_expect() is gone xmon_read_poll() is unused, drop it too. Signed-off-by: Michael Ellerman Signed-off-by: Benjamin Herrenschmidt

[POWERPC] fix showing xmon help

2007-07-22T11:30:58+00:00

In some configuration, xmon help string is larger than xmon_printf buffer. We need not to use printf. This patch adds xmon_puts and change to use it to show help string. Signed-off-by: Kou Ishizaki Signed-off-by: Paul Mackerras

[POWERPC] Make xmon_write accept a const buffer

2007-07-22T11:30:58+00:00

Because xmon_write doesn't change the buffer, we should add 'const' qualifier to the argument which points it. Signed-off-by: Kou Ishizaki Signed-off-by: Paul Mackerras

powerpc: Simplify and clean up the xmon terminal I/O

2005-11-08T11:55:08+00:00

This factors out the common bits of arch/powerpc/xmon/start_*.c into a new nonstdio.c, and removes some stuff that was supposed to make xmon's I/O routines somewhat stdio-like but was never used. It also makes the parsing of the xmon= command line option common, so that ppc32 can now use xmon={off,on,early} also. Signed-off-by: Paul Mackerras

powerpc: Merge xmon

2005-10-28T12:53:37+00:00

The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras