Memory layout: Difference between revisions

Line 18:

| 0x10000000

| ?

| IO memory

| [[IO]] memory

|-

| 0x1FF00000

Line 62:

| 0x1EC00000

|

| IO registers, the mapped IO pages which each process can access is specified in the [[NCCH#CXI|CXI]] exheader.(Applications normally don't have access to registers in this range)

| [[IO]] registers, the mapped IO pages which each process can access is specified in the [[NCCH#CXI|CXI]] exheader.(Applications normally don't have access to registers in this range)

|-

| 0x1FF80000

|

| [[Configuration Memory]], access to this is specified by the exheader as well.

|}

All executable pages are read-only, and data pages have the execute-never permission set. Normally .text from the loaded ExeFS:/.code is the only mapped executable memory. Executable [[RO Services|CROs]] can be loaded into memory, once loaded the CRO .text section memory page permissions are changed via [[SVC|ControlProcessMemory]] from RW- to R-X. The address and size of each ExeFS:/.code section is stored in the exheader, the permissions for each section is: .text R-X, .rodata R--, .data RW-, and .bss RW-. The loaded .code is mapped to the addresses specified in the exheader by the ARM11 kernel. The stack permissions is initialized by the ARM11 kernel: RW-. The heap permissions is normally RW-.

@@ Line 18: / Line 18: @@
 | 0x10000000
 | ?
-| IO memory
+| [[IO]] memory
 |-
 | 0x1FF00000
@@ Line 62: / Line 62: @@
 | 0x1EC00000
 |
-| IO registers, the mapped IO pages which each process can access is specified in the [[NCCH#CXI|CXI]] exheader.(Applications normally don't have access to registers in this range)
+| [[IO]] registers, the mapped IO pages which each process can access is specified in the [[NCCH#CXI|CXI]] exheader.(Applications normally don't have access to registers in this range)
+|-
+| 0x1FF80000
+|
+| [[Configuration Memory]], access to this is specified by the exheader as well.
 |}
 All executable pages are read-only, and data pages have the execute-never permission set. Normally .text from the loaded ExeFS:/.code is the only mapped executable memory. Executable [[RO Services|CROs]] can be loaded into memory, once loaded the CRO .text section memory page permissions are changed via [[SVC|ControlProcessMemory]] from RW- to R-X. The address and size of each ExeFS:/.code section is stored in the exheader, the permissions for each section is: .text R-X, .rodata R--, .data RW-, and .bss RW-. The loaded .code is mapped to the addresses specified in the exheader by the ARM11 kernel. The stack permissions is initialized by the ARM11 kernel: RW-. The heap permissions is normally RW-.