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Proper PIE for RPL.
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parent
5e69878ea7
commit
c2c9f05328
@ -15,7 +15,7 @@ endif
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include $(WUT_ROOT)/rules/ppc.mk
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LD := $(PREFIX)ld
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RPLCFLAGS := -Wno-unused-variable -fPIC -fpic -fno-builtin
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RPLCFLAGS := -Wno-unused-variable -fno-builtin
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CFLAGS += -O2 -Wall -std=c11 $(RPLCFLAGS)
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ODEPS := stub.o lib.o
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@ -5,8 +5,8 @@
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.section ".rplTramp.text","ax"; \
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.global name; \
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name: \
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li %r0, 0; \
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oris %r0, %r0, 0; \
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li %r0, name##_stub@l; \
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oris %r0, %r0, name##_stub@ha; \
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mtctr %r0; \
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bctr; \
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@ -1,7 +1,7 @@
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LIBPATHS := -L$(WUT_ROOT)/lib
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CFLAGS := -I$(WUT_ROOT)/include -fno-builtin -ffreestanding
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CXXFLAGS := $(CFLAGS)
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LDFLAGS := -nostdlib -nostartfiles -T $(WUT_ROOT)/rules/rpl.ld
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LDFLAGS := -nostdlib -nostartfiles
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include $(WUT_ROOT)/rules/base.mk
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71
rules/rpl.ld
71
rules/rpl.ld
@ -4,19 +4,24 @@ OUTPUT_ARCH(powerpc:common)
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ENTRY(_start)
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MEMORY {
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system (rw) : ORIGIN = 0x01000000, LENGTH = 32M
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system (rwx) : ORIGIN = 0x01000000, LENGTH = 32M
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code (rwx) : ORIGIN = 0x02000000, LENGTH = 224M
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data (rw) : ORIGIN = 0x10000000, LENGTH = 800M
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load (rwx) : ORIGIN = 0xC0000000, LENGTH = 128M
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}
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PHDRS {
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hdr_text PT_LOAD FILEHDR PHDRS FLAGS(0x01 | 0x04);
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hdr_data PT_LOAD FLAGS(0x02 | 0x04);
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hdr_srodata PT_LOAD FLAGS(0x04);
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hdr_sdata PT_LOAD FLAGS(0x02 | 0x04);
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}
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SECTIONS {
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. = ORIGIN(code);
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/* Standard code section */
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.text ALIGN(32) : { *(.text .stub .text.*) }
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.text ALIGN(32) : { *(.text .stub .text.*) } : hdr_text
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/*
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* Trampolines for each RPL function, have the same symbol name of
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@ -42,7 +47,7 @@ SECTIONS {
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/*
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* Contains the name of RPLs, referenced by .lib.rplLibs
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*/
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.rodata.rplNames ALIGN(32) : { KEEP (*(.rodata.rplNames)) }
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.rodata.rplNames ALIGN(32) : { KEEP (*(.rodata.rplNames)) } : hdr_data
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/*
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* List of RPL libraries to import, in format:
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@ -57,10 +62,64 @@ SECTIONS {
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*/
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.data.rplFuncStubs ALIGN(32) : { KEEP (*(.data.rplFuncStubs)) }
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.interp ALIGN(32) : { *(.interp) }
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.hash ALIGN(32) : { *(.hash) }
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.dynsym ALIGN(32) : { *(.dynsym) }
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.dynstr ALIGN(32) : { *(.dynstr) }
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.rela.dyn ALIGN(32) : { *(.rela.dyn) }
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.rela.text ALIGN(32) : { *(.rela.text) }
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.eh_frame ALIGN(32) : { *(.eh_frame) }
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.dynamic ALIGN(32) : { *(.dynamic) }
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.got ALIGN(32) : { *(.got) }
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.comment ALIGN(32) : { *(.comment) }
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.shstrtab ALIGN(32) : { *(.shstrtab) }
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.symtab ALIGN(32) : { *(.symtab) }
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.strtab ALIGN(32) : { *(.strtab) }
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.rel.dyn :
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{
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*(.rel.init)
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*(.rel.text .rel.text.* .rel.gnu.linkonce.t.*)
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*(.rel.fini)
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*(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*)
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*(.rel.data.rel.ro*)
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*(.rel.data .rel.data.* .rel.gnu.linkonce.d.*)
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*(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*)
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*(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*)
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*(.rel.ctors)
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*(.rel.dtors)
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*(.rel.got)
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*(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*)
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*(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*)
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*(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*)
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*(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*)
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*(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*)
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}
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.rela.dyn :
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{
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*(.rela.init)
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*(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)
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*(.rela.fini)
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*(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*)
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*(.rela.data .rela.data.* .rela.gnu.linkonce.d.*)
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*(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)
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*(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*)
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*(.rela.ctors)
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*(.rela.dtors)
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*(.rela.got)
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*(.rela.toc)
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*(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*)
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*(.rela.sbss .rela.sbss.* .rela.gnu.linkonce.sb.*)
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*(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*)
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*(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*)
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*(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)
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}
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/* Standard data sections */
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. = ORIGIN(data);
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.rodata ALIGN(256) : { *(.rodata .rodata.*) }
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.data ALIGN(256) : { *(.data) }
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.bss ALIGN(256) : { *(.bss) }
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.rodata ALIGN(256) : { *(.rodata .rodata.*) } : hdr_srodata
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.data ALIGN(256) : { *(.data) } : hdr_sdata
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.bss ALIGN(256) : { *(.sbss) *(.bss) }
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}
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@ -1,7 +1,7 @@
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LIBPATHS := -L$(WUT_ROOT)/lib
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CFLAGS := -I$(WUT_ROOT)/include -fno-builtin -ffreestanding
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CXXFLAGS := $(CFLAGS)
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LDFLAGS := -nostdlib -nostartfiles $(WUT_ROOT)/lib/crt0.o -T $(WUT_ROOT)/rules/rpl.ld
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LDFLAGS := -nostdlib -nostartfiles $(WUT_ROOT)/lib/crt0.o -T $(WUT_ROOT)/rules/rpl.ld -pie -fPIE
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include $(WUT_ROOT)/rules/base.mk
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