secure bootloader linker - migrating from GCC to SES

Question

We used the secure bootloader example, and then made room in the FLASH for an LCD driver/animation. 
 SES is building fine 
 Problem - GCC is running out of space in FLASH. I would expect similar binaries from each toolchain. Seems like I might have screwed up the linker. 
 SES linker settings follow in .emproject - 
 linker_section_placement_macros="FLASH_PH_START=0x0;FLASH_PH_SIZE=0x100000;RAM_PH_START=0x20000000;RAM_PH_SIZE=0x40000;FLASH_START=0xee000;FLASH_SIZE=0x10000;RAM_START=0x20005978;RAM_SIZE=0x3a688" linker_section_placements_segments="FLASH RX 0x0 0x100000;RAM1 RWX 0x20000000 0x40000;mbr_params_page RX 0x000FE000 0x1000;bootloader_settings_page RX 0x000FF000 0x1000;uicr_bootloader_start_address RX 0x10001014 0x4;uicr_mbr_params_page RX 0x10001018 0x4" 
 I took the linker script from the secure bootloader GCC example, with the same size modifications for the LCD driver/animation. 
 MEMORY { FLASH (rx) : ORIGIN = 0xee000, LENGTH = 0x10000 RAM (rwx) : ORIGIN = 0x20005978, LENGTH = 0x3a688 uicr_bootloader_start_address (r) : ORIGIN = 0x10001014, LENGTH = 0x4 bootloader_settings_page (r) : ORIGIN = 0x000FF000, LENGTH = 0x1000 uicr_mbr_params_page (r) : ORIGIN = 0x10001018, LENGTH = 0x4 mbr_params_page (r) : ORIGIN = 0x000FE000, LENGTH = 0x1000 } 
 /usr/local/gcc-arm-none-eabi-6-2017-q2-update/bin/../lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/bin/ld: region FLASH overflowed with .data and user data /usr/local/gcc-arm-none-eabi-6-2017-q2-update/bin/../lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/bin/ld: section .mbr_params_page VMA [00000000000fe000,00000000000fefff] overlaps section .text VMA [00000000000ee000,00000000000ff3c7] /usr/local/gcc-arm-none-eabi-6-2017-q2-update/bin/../lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/bin/ld: section .crypto_data VMA [00000000000ff3c8,00000000000ff3cf] overlaps section .bootloader_settings_page VMA [00000000000ff000,00000000000fffff] /usr/local/gcc-arm-none-eabi-6-2017-q2-update/bin/../lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/bin/ld: region `FLASH' overflowed by 5340 bytes collect2: error: ld returned 1 exit status make: *** [_build/ocho.out] Error 1 
 Looking at the memory maps, I notice something different. SES throws things into a section called reserved_flash, GCC doesn't make that distinction. The Memory Config summaries show flash beginning at 0x0 for SES, then reserved flash at 0xee000.

.reserved_flash 
 0x00000000 0xee000 
 0x00000000 __reserved_flash_start__ = . 
 * ( .reserved_flash .reserved_flash.* ) 
 0x000ee000 . = MAX (((__reserved_flash_start__ + 0xee000 ) - 0x0 ), .) 
 *fill* 0x00000000 0xee000 
 0x000ee000 __reserved_flash_end__ = (__reserved_flash_start__ + SIZEOF ( .reserved_flash )) 
 0x000ee000 __reserved_flash_size__ = SIZEOF ( .reserved_flash ) 
 0x000ee000 __reserved_flash_load_end__ = __reserved_flash_end__ 
 0x00000001 . = ASSERT (((__reserved_flash_start__ == __reserved_flash_end__) || ((__reserved_flash_end__ - __FLASH_segment_start__) <= __FLASH_segment_size__)), error: .reserved_flash is too large to fit in FLASH memory segment) 
 0x00000001 . = ASSERT ((__reserved_flash_size__ <= 0xee000 ), error: .reserved_flash section is larger than specified size) 
 0x000ee000 __vectors_load_start__ = 0xee000 
 
 .vectors 0x000ee000 0x200 
 0x000ee000 __vectors_start__ = .

SES memory config summary 
 Name Origin Length Attributes 
 UNPLACED_SECTIONS 0x00000000 0x00000000 xw 
 uicr_mbr_params_page 0x10001018 0x00000004 xw 
 uicr_bootloader_start_address 0x10001014 0x00000004 xw 
 RAM1 0x20000000 0x00040000 xw 
 FLASH 0x00000000 0x00100000 xw 
 *default* 0x00000000 0xffffffff 
 GCC memory config summary 
 Memory Configuration 
 
 Name Origin Length Attributes 
 FLASH 0x00000000000ee000 0x0000000000010000 xr 
 RAM 0x0000000020005978 0x000000000003a688 xrw 
 uicr_bootloader_start_address 0x0000000010001014 0x0000000000000004 r 
 bootloader_settings_page 0x00000000000ff000 0x0000000000001000 r 
 uicr_mbr_params_page 0x0000000010001018 0x0000000000000004 r 
 mbr_params_page 0x00000000000fe000 0x0000000000001000 r 
 *default* 0x0000000000000000 0xffffffffffffffff 
 
 Full GCC linker below 
 lift_ehc_gcc_nrf52.ld