diff options
Diffstat (limited to 'sim')
| -rw-r--r-- | sim/common/ChangeLog | 4 | ||||
| -rw-r--r-- | sim/common/sim-core.c | 57 |
2 files changed, 61 insertions, 0 deletions
diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog index 0898a6f..05948f2 100644 --- a/sim/common/ChangeLog +++ b/sim/common/ChangeLog @@ -1,3 +1,7 @@ +2021-01-07 Mike Frysinger <vapier@gentoo.org> + + * sim-core.c (sim_memory_map): Define. + 2021-01-04 Mike Frysinger <vapier@gentoo.org> * acinclude.m4 (ACX_BUGURL): Change http:// to https://. diff --git a/sim/common/sim-core.c b/sim/common/sim-core.c index 74369aa..5382306 100644 --- a/sim/common/sim-core.c +++ b/sim/common/sim-core.c @@ -453,6 +453,63 @@ sim_core_translate (sim_core_mapping *mapping, #if EXTERN_SIM_CORE_P +/* See include/gdb/remote-sim.h. */ +char * +sim_memory_map (SIM_DESC sd) +{ + sim_core *core = STATE_CORE (sd); + unsigned map; + char *s1, *s2, *entry; + + s1 = xstrdup ( + "<?xml version='1.0'?>\n" + "<!DOCTYPE memory-map PUBLIC '+//IDN gnu.org//DTD GDB Memory Map V1.0//EN'" + " 'http://sourceware.org/gdb/gdb-memory-map.dtd'>\n" + "<memory-map>\n"); + + for (map = 0; map < nr_maps; ++map) + { + sim_core_mapping *mapping; + + for (mapping = core->common.map[map].first; + mapping != NULL; + mapping = mapping->next) + { + /* GDB can only handle a single address space. */ + if (mapping->level != 0) + continue; + + entry = xasprintf ("<memory type='ram' start='%#x' length='%#x'/>\n", + mapping->base, mapping->nr_bytes); + /* The sim memory map is organized by access, not by addresses. + So a RWX memory map will have three independent mappings. + GDB's format cannot support overlapping regions, so we have + to filter those out. + + Further, GDB can only handle RX ("rom") or RWX ("ram") mappings. + We just emit "ram" everywhere to keep it simple. If GDB ever + gains support for more stuff, we can expand this. + + Using strstr is kind of hacky, but as long as the map is not huge + (we're talking <10K), should be fine. */ + if (strstr (s1, entry) == NULL) + { + s2 = concat (s1, entry, NULL); + free (s1); + s1 = s2; + } + free (entry); + } + } + + s2 = concat (s1, "</memory-map>", NULL); + free (s1); + return s2; +} +#endif + + +#if EXTERN_SIM_CORE_P unsigned sim_core_read_buffer (SIM_DESC sd, sim_cpu *cpu, |