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| author | James Clarke <jrtc27@jrtc27.com> | 2020-02-03 00:53:17 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-02-02 16:53:17 -0800 |
| commit | 2c4e689bc1ed4440d0d95b3b350ce872e7f75865 (patch) | |
| tree | 136e0fefebe6ec544c101b4e04bb56a85ede57f1 /configure | |
| parent | 6fa3555cc501ab1dfb034061e991e065e2e54253 (diff) | |
| download | riscv-pk-2c4e689bc1ed4440d0d95b3b350ce872e7f75865.zip riscv-pk-2c4e689bc1ed4440d0d95b3b350ce872e7f75865.tar.gz riscv-pk-2c4e689bc1ed4440d0d95b3b350ce872e7f75865.tar.bz2 | |
Support manually zeroing out BSS when booting (#188)
Some ELF loaders, in particular gdb's load command for dynamically
loading files into memory, which is often used to load binaries onto
FPGAs over JTAG, do not zero out BSS, leaving the memory in whatever
state it was previously in. Thus, introduce a new --enable-zero-bss
configure flag, which will include code to zero out BSS when booting.
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -675,6 +675,7 @@ with_arch with_abi enable_print_device_tree with_mem_start +enable_zero_bss enable_optional_subprojects enable_vm enable_logo @@ -1314,6 +1315,7 @@ Optional Features: --enable-stow Enable stow-based install --enable-print-device-tree Print DTS when booting + --enable-zero-bss Manually zero out BSS when booting --enable-optional-subprojects Enable all optional subprojects --disable-vm Disable virtual memory @@ -4122,6 +4124,19 @@ else fi +# Check whether --enable-zero-bss was given. +if test "${enable_zero_bss+set}" = set; then : + enableval=$enable_zero_bss; +fi + +if test "x$enable_zero_bss" = "xyes"; then : + + +$as_echo "#define ZERO_BSS /**/" >>confdefs.h + + +fi + #------------------------------------------------------------------------- # MCPPBS subproject list #------------------------------------------------------------------------- |